From glowbugs-owner@piobaire.mines.uidaho.edu Sat May 2 10:53:45 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.8.8) with ESMTP id KAA12992 for ; Sat, 2 May 1998 10:53:45 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA04840 for glowbugs-outgoing; Sat, 2 May 1998 07:23:01 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from admin.aurora.edu (admin.aurora.edu [192.203.224.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id HAA04831 for ; Sat, 2 May 1998 07:22:58 -0700 (PDT) Received: from localhost (broehrig@localhost) by admin.aurora.edu (8.8.8/8.8.8) with SMTP id JAA19131; Sat, 2 May 1998 09:14:39 -0500 Date: Sat, 2 May 1998 09:14:38 -0500 (CDT) From: Bob Roehrig To: Ken Gordon cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Glowbugs and QSK... In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On Fri, 1 May 1998, Ken Gordon wrote: > Indeed! Has anyone here remembered how to "hotrod" a relay? > > I tried it several times: the idea is to use something on the order of a > 350 VDC powersupply for a 12 VDC relay, with a series dropping resistor so > that when the key is down, the current through the relay is no more than > the rated current. Supposedly...what this does is make the relay close > much faster. That's how a TTY loop circuit works. Typically use around a 120VDC supply and a 2K resistor, even though the polar relays or selector magnets will pull in at less than 28V. Using a diode across the coil directly will slow down the release. best way is to put the diode across the combination of the relay coil and its dropping resistor. (This was not done in TTY circuits - they usually used series RC "networks" across contacts rather than anything across the coils). "Nostalgia is a thing of the past" E-mail broehrig@admin.aurora.edu 73 de Bob, K9EUI CIS: Data / Telecom Aurora University, Aurora, IL 630-844-4898 Fax 630-844-5530 From glowbugs-owner@piobaire.mines.uidaho.edu Sat May 2 13:01:51 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.8.8) with ESMTP id NAA27884 for ; Sat, 2 May 1998 13:01:51 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA06360 for glowbugs-outgoing; Sat, 2 May 1998 09:35:07 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from alyssa.iaxs.net (root@alyssa.iaxs.net [205.164.100.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA06355 for ; Sat, 2 May 1998 09:35:04 -0700 (PDT) Received: from citrus.iaxs.net (bill@citrus.iaxs.net [206.43.66.3]) by alyssa.iaxs.net (8.8.8/iaxs-19971103) with ESMTP id LAA16378; Sat, 2 May 1998 11:34:26 -0500 (CDT) Received: (from bill@localhost) by citrus.iaxs.net (8.8.8/iaxs-citrus-19971103) id LAA08029; Sat, 2 May 1998 11:34:23 -0500 (CDT) Date: Sat, 2 May 1998 11:34:23 -0500 (CDT) From: Bill Hawkins Message-Id: <199805021634.LAA08029@citrus.iaxs.net> To: broehrig@admin.aurora.edu, keng@uidaho.edu Subject: Re: GB> Glowbugs and QSK... Cc: glowbugs@piobaire.mines.uidaho.edu Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Well, lessee, the thing that makes the relay move is the magnetic field. That's proportional to current. The coil has inductance (that varies as the armature moves). The fastest way to establish current is to use a current source, approximated by a large resistor and relatively high voltage. Then you'd want to reduce the armature travel distance (and time) by adjusting/bending things to get a small magnetic gap and a small contact gap. Low spring force would be nice, but you'll need it for the release. On the release, you need to dump the current quickly and use the spring force to pull the armature back to the open position. If the circuit is just opened, the inductor tries to maintain current flow and the voltage rises until something arcs. Using a back diode will stop the arc, but it maintains the current flow and holds the armature closed. Bob says TTY used RC across contacts. So did IBM in the old 700 series VT computer gear. R was about the DC coil resistance, and C about 0.1 microfarad. Don't know how the values are picked, but there's only two of them. A resistance box and a cap box and a scope across the contacts would let you tune the RC values for fast release - if you are really serious about fast QSK, that is. The original RC values were probably chosen to minimize arcing and maximize contact life. Just speculation, but the use of RC to let the circuit oscillate in a damped wave probably reduces the magnetic field holding the armature faster than using a back diode and a resistor, for LR decay. Then again, maybe not. Caps were cheaper than diodes in those days. Regards, Bill Hawkins From glowbugs-owner@piobaire.mines.uidaho.edu Sat May 2 16:22:56 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.8.8) with ESMTP id QAA13141 for ; Sat, 2 May 1998 16:22:56 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA07977 for glowbugs-outgoing; Sat, 2 May 1998 12:59:11 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mtigwc04.worldnet.att.net (mtigwc04.worldnet.att.net [204.127.131.33]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id MAA07972 for ; Sat, 2 May 1998 12:59:07 -0700 (PDT) Received: from LOCALNAME ([12.65.146.46]) by mtigwc04.worldnet.att.net (post.office MTA v2.0 0613 ) with SMTP id AAB22149; Sat, 2 May 1998 19:58:11 +0000 X-Sender: ebjr@postoffice.worldnet.att.net X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: boatanchors@theporch.com, glowbugs@piobaire.mines.uidaho.edu From: Sandy W5TVW Subject: GB> Baton Rouge, LA hamfest Date: Sat, 2 May 1998 19:58:11 +0000 Message-ID: <19980502195806.AAB22149@LOCALNAME> Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Went to Baton Rouge today with Joe, K5HLR. Ran into a few Glowbuggers- Boatanchor people there. The pickin's were very slim! Saw an R-392 (It followed Keith KK5FE home!) There was a very scruffy NC-98 there overpriced at $110. A Hallicrafters S-120 (didn't ask price!) Not much else except some craft stuff, and lots of computer odds-n-ends. Many, many empty tables! I'd say it was about as poor a flea market showing as I've seen there. I came home with nearly all my money! 73, E. V. Sandy Blaize, W5TVW "Boat Anchors collected, restored, repaired, traded and used!" 417 Ridgewood Drive Metairie, LA., 70001 ***Again looking for a Hallicrafters SR-75 **** **860 Hartley 'ECO' construction "on hold"**** *** Looking for a TRC-10 transceiver ****** *** Looking for an RAL receiver *********** From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 3 00:16:54 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.8.8) with ESMTP id AAA24736 for ; Sun, 3 May 1998 00:16:54 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id UAA11224 for glowbugs-outgoing; Sat, 2 May 1998 20:49:47 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id UAA11214; Sat, 2 May 1998 20:49:33 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Sat, 2 May 1998 20:49:32 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: Doug cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Glowbugs and QSK... In-Reply-To: <354BC990.4EBC01B9@alpinet.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO My sincere thanks to everyone who responded to my original post on "hotrodding" a relay. Your suggestions were VERY practical and all of them work. Thanks again!!!!! Ken W7EKB On Sat, 2 May 1998, Doug wrote: > Hi Ken.....try it the way the Phone company did it back when we had > relays in about everything for the business. Use a separate source, fed > through a diode to the coil. Include sufficient series resistance to allow > some current to flow in the coil at all times, just not quite enough to cause > the contacts to become light in the released position. This current is called > the "soak" current, and is designed to bring the relay near to the operating > point, reducing the R/L time constant in the core and causing it to switch > to the opposite state much more quickly. Just dont use too much current > that'd keep the relay from releasing quickly. > > I've tried this in a QSK configuration and it really rocks.....good clean > switching and falloff time. > > Have fun > > Doug, K7YD > > > Ken Gordon wrote: > > > On Fri, 1 May 1998, DEVCOM wrote: > > > > > I used to run QSK with relays with a homebrew 6C4/6DQ6 transmitter with a > > > radio shack SW receiver and, like you say, it was great! Works even better > > > than VOX (which is also good for hearing someone trying to break) and full > > > duplex on VHF, because between each character you can hear the slightest bit > > > of interference, breakers, the other station doubling with you, etc. > > > Amazing how many thousands of "cycles" a mechanical device like that can > > > survive.. > > > > Indeed! Has anyone here remembered how to "hotrod" a relay? > > > > I tried it several times: the idea is to use something on the order of a > > 350 VDC powersupply for a 12 VDC relay, with a series dropping resistor so > > that when the key is down, the current through the relay is no more than > > the rated current. Supposedly...what this does is make the relay close > > much faster. > > > > However, all I ever accomplished by doing this was burn up relays. They > > surely keyed fast....for a while. I tried a clamping-diode but that > > didn't help either. I abandoned the idea since I had run out of time to > > devote to it. > > > > Now, I wonder... > > > > Ken W7EKB > > > > > > From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 3 11:46:08 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.8.8) with ESMTP id LAA07394 for ; Sun, 3 May 1998 11:46:07 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA18600 for glowbugs-outgoing; Sun, 3 May 1998 08:21:29 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from admin.aurora.edu (admin.aurora.edu [192.203.224.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id IAA18591 for ; Sun, 3 May 1998 08:21:25 -0700 (PDT) Received: from localhost (broehrig@localhost) by admin.aurora.edu (8.8.8/8.8.8) with SMTP id KAA28601; Sun, 3 May 1998 10:12:33 -0500 Date: Sun, 3 May 1998 10:12:33 -0500 (CDT) From: Bob Roehrig To: Bill Hawkins cc: keng@uidaho.edu, glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Glowbugs and QSK... In-Reply-To: <199805021634.LAA08029@citrus.iaxs.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On Sat, 2 May 1998, Bill Hawkins wrote: > Bob says TTY used RC across contacts. So did IBM in the old 700 series > VT computer gear. R was about the DC coil resistance, and C about 0.1 > microfarad. Don't know how the values are picked, but there's only two > of them. That's about right I think. The TTY (and other Western Electric) circuits used a couple different "networks". The most popular one was a 185A, if I remember correctly, and as I recall it had a resistor of 470 to 560 ohms and a cap of .1 to .15uf. "Nostalgia is a thing of the past" E-mail broehrig@admin.aurora.edu 73 de Bob, K9EUI CIS: Data / Telecom Aurora University, Aurora, IL 630-844-4898 Fax 630-844-5530 From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 3 22:07:26 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.8.8) with ESMTP id WAA13851 for ; Sun, 3 May 1998 22:07:25 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id SAA24010 for glowbugs-outgoing; Sun, 3 May 1998 18:41:58 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id SAA24005 for ; Sun, 3 May 1998 18:41:55 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Sun, 3 May 1998 18:41:55 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> A keying relay... Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Well, I found a "Keying Relay M-7470182, Struthers-Dunn, Inc., Type 78CCA101, 28VDC" I think it is the one which goes in the ART-13. Looks nearly new. Dunno where I got it. Every contact set inside is adjustable as is the armature tension and spacing. Seems too big and stiff to key very fast. It has an external vacumn relay which was probably used to key the antenna. Does anyone have a wiring diagram for this thing ? I mean the Cinch-Jones looking thing on the bottom? Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Mon May 4 00:06:16 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.8.8) with ESMTP id AAA17886 for ; Mon, 4 May 1998 00:06:15 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id UAA24985 for glowbugs-outgoing; Sun, 3 May 1998 20:45:30 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from camel7.mindspring.com (camel7.mindspring.com [207.69.200.57]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id UAA24980 for ; Sun, 3 May 1998 20:45:26 -0700 (PDT) Received: from sorcery-2 (user-38lc2rt.dialup.mindspring.com [209.86.11.125]) by camel7.mindspring.com (8.8.5/8.8.5) with SMTP id XAA07143 for ; Sun, 3 May 1998 23:44:45 -0400 (EDT) Message-Id: <3.0.5.32.19980503225824.00813440@pop.pipeline.com> X-Sender: lrware@pop.pipeline.com X-Mailer: QUALCOMM Windows Eudora Pro Version 3.0.5 (32) Date: Sun, 03 May 1998 22:58:24 +0000 To: glowbugs@piobaire.mines.uidaho.edu From: "Lawrence R. Ware" Subject: GB> Box of glowbug type parts Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Good evening folks! Been a while since I posted here, but since I have this box of NOS Bud and Johnson variable caps sitting around I thought I'd see if any of the glowbuggers needed some for home-brew projects. I have: 4 ea. BUD LC-1847 3 gang tinymite 25 pf/section variables. 6 ea. Johnson 149-2 ? variables. 4 ea. Johnson 160-311 2.9 - 19.6 pf variables. 4 ea. Johnson 160-203 1.5 - 3.1 pf variables. 20 total all NOS, 19 NIB. One of you homebrewers want to take the whole lot for $20 + $4 for priority mail? If I get a lot of requests, winner will be picked based on best idea for using them.... :-) -Larry # Larry Ware # Admirer, Collector, Restorer of National Radio Company # receivers and other artifacts. # Orlando, Florida # lrware@pipeline.com From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 12:43:04 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id MAA14967 for ; Tue, 5 May 1998 12:43:04 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA27485 for glowbugs-outgoing; Tue, 5 May 1998 09:07:11 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from relay.mnsinc.com (relay1.mnsinc.com [206.55.3.25]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA27476 for ; Tue, 5 May 1998 09:07:06 -0700 (PDT) Received: from COMPUTER (bry.mnsinc.com [206.239.150.65]) by relay.mnsinc.com (8.8.5/8.7.3) with SMTP id MAA23608; Tue, 5 May 1998 12:05:05 -0400 (EDT) Message-Id: <199805051605.MAA23608@relay.mnsinc.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: raylarue@gte.net, Boatanchors-qth , glowbugs@piobaire.mines.uidaho.edu Date: Tue, 5 May 1998 12:04:27 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? Reply-to: bry@mnsinc.com Priority: normal In-reply-to: <354BDCAD.53E4F180@gte.net> X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Now folks here is an idea that may have some validity! I don't like to sign as AF4K/BA because it sounds like I am in some foreign country!! HOW ABOUT instead of calling CQ we call QBA QBA QBA de AF4K AF4K AF4K Meaning: CQ CQ CQ (I am using a BA and would like to work others with old tube gear!) and how about insetad of a QRZ? we would send QBA? QBA? QBA? Meaning: 'Who is calling me with a Boatanchor?" I think this has some merit! What do YOU folks think??? On 2 May 98 at 22:55, Ray wrote: > During field day, members of AReU (East Tampa), are planning on > firing up a couple classic and antique rigs. It will be a great > opportunity for new hams to see a little of our "roots" in operation > and for old hams to be reminded of some of the enjoyable times in > the past. One of our rigs is a compact one tube, WW 2 spy rig. It > is xtal controlled and runs only about 10 watts. > > Is there a "Q" signal which could be transmitted along with ones > call, to indicate the use of an classic/antique? I was thinking > like QBA or QAT? I think if I heard such an ID among all the other > QRM, I would try harder to make the contact. If not, anyone game > for coining one? 73, Ray, W4BYG > > > --- > Submissions boatanchors@qth.net > **************************************************** *** 73 from Radio AF4K/G3XLQ Gaithersburg, MD USA * ** E-mail to: bry@mnsinc.com * *** ICQ 6124470 *** ** http://www.mnsinc.com/bry/ * **************************************************** AM International #1024, TENTEN #13582. GRID FM19. Rigs: Valiant, DX-60/HG-10, FT-840, TM-261A, Harvey Wells Bandmaster, Drake 2 C. TEN-TEN #13582, DXCC #17763, Bicentennial WAS From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 13:26:15 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id NAA27520 for ; Tue, 5 May 1998 13:26:14 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA28408 for glowbugs-outgoing; Tue, 5 May 1998 09:54:02 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id JAA28387; Tue, 5 May 1998 09:53:15 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Tue, 5 May 1998 09:53:15 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: Brian Carling cc: raylarue@gte.net, Boatanchors-qth , glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? In-Reply-To: <199805051605.MAA23608@relay.mnsinc.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Excellent idea, but what are the REAL meanings for QBA and QBA? They DO exist, you know. Probably have not been used in dogs years, but they are someone's list somewhere. Say, Bry, I worked W7ZFB last night on 7051 or so. He was 599 into Moscow despite a) QRN (a storm building up), and b) his 40 watts from the Elmac pair. This about 0300. He had much worse QRN than myself. Even so, he didn't have a LOT of trouble hearing my 50 watts until just before we signed. Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 14:22:23 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id OAA16254 for ; Tue, 5 May 1998 14:22:22 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA29922 for glowbugs-outgoing; Tue, 5 May 1998 10:48:36 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.xmission.com (mail.xmission.com [198.60.22.22]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id KAA29917 for ; Tue, 5 May 1998 10:48:32 -0700 (PDT) Received: from slc282h.modem.xmission.com (xmission.com) [166.70.2.28] by mail.xmission.com with esmtp (Exim 1.82 #2) id 0yWlp6-0004tQ-00; Tue, 5 May 1998 11:48:12 -0600 Message-ID: <354F51FB.F4BAD285@xmission.com> Date: Tue, 05 May 1998 11:53:03 -0600 From: Dexter Francis Reply-To: cwest@xmission.com Organization: CWest Tube Sales X-Mailer: Mozilla 4.05 (Macintosh; I; PPC) MIME-Version: 1.0 To: Ken Gordon , glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? References: Content-Type: text/plain; charset=us-ascii; x-mac-type="54455854"; x-mac-creator="4D4F5353" Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I have a copy of "Electronic Communication" by Shrader, that has a five page list of Q Signals in it, that goes from QRA to QUU. There are no Q signals listed that start with anything before QR. Here are a few that I find particularly fun: QRD - Is my keying defective? These two "Ferrengi" Q signals from a bygone era... QSJ - What is the charge to be collected per word to_______, including internal telegraph charges? QSP - Will your relay to_______free of charge? QUA - Have you news of (station ID)? QUI - Are your navigation lights working? [Lights on - No one home?!...;-)] And this one, for pure power of compaction... QUQ - Shall I train my searchlight nearly vertical on a cloud, occulting if possible and, if your aircraft is seen, deflect the beam up-wind on on the water or land, to facilitate your landing? -df *** CWest - P.O. Box 22443 Salt Lake City, Utah 84122 *** *Visit our Web Page @ http://www.xmission.com/~cwest* From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 16:13:35 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id QAA13607 for ; Tue, 5 May 1998 16:13:34 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA02294 for glowbugs-outgoing; Tue, 5 May 1998 12:38:56 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id MAA02284 for ; Tue, 5 May 1998 12:38:51 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.7/8.8.7) id PAA12126; Tue, 5 May 1998 15:34:29 -0400 (EDT) From: "Robert D. Keys" Message-Id: <199805051934.PAA12126@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? In-Reply-To: <354F51FB.F4BAD285@xmission.com> from Dexter Francis at "May 5, 98 11:53:03 am" To: cwest@xmission.com Date: Tue, 5 May 1998 15:34:29 -0400 (EDT) Cc: keng@uidaho.edu, glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL32 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > I have a copy of "Electronic Communication" by Shrader, that has a five > page list of Q Signals in it, that goes from QRA to QUU. There are no Q > signals listed that start with anything before QR. That is a good study book. Not as good as Noll, but generally lots of good info, if you get a 3rd edition. The latest one get scarce on CW stuff, if memory serves me correctly. There are reserved sections that are in the ITU designations. I think the ACM Army pub details what is open. That is the definitive list other than the ITU pubs. Someone had it transcribed in, at one time, and I have transcribed about half of it in.... someday to finish. > Here are a few that I find particularly fun: > > QRD - Is my keying defective? > > These two "Ferrengi" Q signals from a bygone era... > > QSJ - What is the charge to be collected per word to_______, including > internal telegraph charges? That might still apply, but not in ham circuits. > QSP - Will your relay to_______free of charge? That definitely still applies in traffic handling. I use that quite often. It is also used in conversational mode, where you want to just relay indirectly something to a buddy. In round tables, where someone is not around, yet, it is useful, if you have to leave for a while and you expect the buddy to show up. > QUA - Have you news of (station ID)? That is used occasionally, especially among friends. > QUI - Are your navigation lights working? [Lights on - No one > home?!...;-)] The air sigs are not used much anymore..... > And this one, for pure power of compaction... > > QUQ - Shall I train my searchlight nearly vertical on a cloud, occulting > if possible and, if your aircraft is seen, > deflect the beam up-wind on on the water or land, to > facilitate your landing? There are several of somewhat dense compaction, depending upon what your particular originating or replying use is. 73/Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 16:33:02 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id QAA10476 for ; Tue, 5 May 1998 16:33:01 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id NAA02575 for glowbugs-outgoing; Tue, 5 May 1998 13:01:16 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from getnet.com (gn2.getnet.com [207.254.1.12]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id NAA02570 for ; Tue, 5 May 1998 13:01:11 -0700 (PDT) Received: from localhost (jackmead@localhost) by getnet.com (8.8.8/8.8.7) with SMTP id NAA08324; Tue, 5 May 1998 13:00:07 -0700 (MST) Date: Tue, 5 May 1998 13:00:07 -0700 (MST) From: Jack Meadows To: Brian Carling cc: raylarue@gte.net, Boatanchors-qth , glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? In-Reply-To: <199805051605.MAA23608@relay.mnsinc.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I like QBA, it has a nice rhythm! Let's do it! Best regards, Jack W7QQQ 813 xtal osc. 6dq6 xtal osc. SB220 QRG cleaner On Tue, 5 May 1998, Brian Carling wrote: > Now folks here is an idea that may have some validity! > > I don't like to sign as AF4K/BA > because it sounds like I am in some foreign country!! > > HOW ABOUT instead of calling CQ we call > QBA QBA QBA de AF4K AF4K AF4K > > Meaning: CQ CQ CQ (I am using a BA and would like to work others with > old tube gear!) > > and how about insetad of a QRZ? we would send QBA? QBA? QBA? > > Meaning: 'Who is calling me with a Boatanchor?" > > I think this has some merit! What do YOU folks think??? > > > **************************************************** > *** 73 from Radio AF4K/G3XLQ Gaithersburg, MD USA * > ** E-mail to: bry@mnsinc.com * > *** ICQ 6124470 *** > ** http://www.mnsinc.com/bry/ * > **************************************************** > AM International #1024, TENTEN #13582. GRID FM19. Rigs: Valiant, DX-60/HG-10, FT-840, TM-261A, Harvey Wells Bandmaster, Drake 2 > C. > TEN-TEN #13582, DXCC #17763, Bicentennial WAS > From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 16:58:02 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id QAA30551 for ; Tue, 5 May 1998 16:58:01 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id NAA03328 for glowbugs-outgoing; Tue, 5 May 1998 13:26:10 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from relay1.Hawaii.edu (root@relay1.hawaii.edu [128.171.3.53]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id NAA03323 for ; Tue, 5 May 1998 13:26:04 -0700 (PDT) Received: from uhunix5.its.Hawaii.Edu ([128.171.44.55]) by relay1.Hawaii.Edu with SMTP id <148634(10)>; Tue, 5 May 1998 10:25:33 -1000 Received: from localhost by uhunix5.its.Hawaii.Edu with SMTP id <188932(6)>; Tue, 5 May 1998 10:25:25 -1000 Date: Tue, 5 May 1998 10:25:20 -1000 From: Jeffrey Herman X-Sender: jeffreyh@uhunix5 To: Ken Gordon cc: Brian Carling , raylarue@gte.net, Boatanchors-qth , glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Hey Gang, why don't we all meet on one BA list instead of two of 'em; I see in the header some of you are residing on the ba@qth.net list. I believe the list boatanchors@listserve.tempe.gov, with its 460 subscribers, might be the place to hang out. It would be nice to have all the BA people in one location so we don't miss any gossup, err, good stuff. 73, Jeff KH2PZ From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 17:33:52 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id RAA16352 for ; Tue, 5 May 1998 17:33:52 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id NAA03964 for glowbugs-outgoing; Tue, 5 May 1998 13:57:22 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mtigwc05.worldnet.att.net (mtigwc05.worldnet.att.net [204.127.131.35]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id NAA03959 for ; Tue, 5 May 1998 13:57:19 -0700 (PDT) Received: from LOCALNAME ([12.65.147.100]) by mtigwc05.worldnet.att.net (post.office MTA v2.0 0613 ) with SMTP id AAB23093; Tue, 5 May 1998 20:56:15 +0000 X-Sender: ebjr@postoffice.worldnet.att.net X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: Jack Meadows , glowbugs@piobaire.mines.uidaho.edu From: Sandy W5TVW Subject: Re: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? Date: Tue, 5 May 1998 20:56:15 +0000 Message-ID: <19980505205610.AAB23093@LOCALNAME> Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO At 01:00 PM 5/5/98 -0700, you wrote: >I like QBA, it has a nice rhythm! >Let's do it! > >Best regards, >Jack W7QQQ >813 xtal osc. >6dq6 xtal osc. >SB220 QRG cleaner > According to my old ACP131, "QBA" means: What is the horizontal visibility at........? (place) Answer: The horizontal visibility at....(place) at.....hours is......(distance). Now QGA and QGB has no entry. That is it is in the book, but the meaning/definition is blank. My ACP131 is dated July 1953. 73, E. V. Sandy Blaize, W5TVW "Boat Anchors collected, restored, repaired, traded and used!" 417 Ridgewood Drive Metairie, LA., 70001 ***Again looking for a Hallicrafters SR-75 **** **860 Hartley 'ECO' construction "on hold"**** *** Looking for a TRC-10 transceiver ****** *** Looking for an RAL receiver *********** From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 17:57:03 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id RAA09751 for ; Tue, 5 May 1998 17:57:01 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id OAA04252 for glowbugs-outgoing; Tue, 5 May 1998 14:19:12 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from radiate.indy.net (radiate.indy.net [199.3.65.253]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id OAA04247 for ; Tue, 5 May 1998 14:19:08 -0700 (PDT) Received: from indy3.indy.net (root@indy3.indy.net [199.3.65.14]) by radiate.indy.net (8.8.7/8.8.7) with ESMTP id PAA04976; Tue, 5 May 1998 15:44:22 -0500 (EST) Received: from localhost (rbarmore@localhost [127.0.0.1]) by indy3.indy.net (8.8.7/8.8.7) with SMTP id PAA12594; Tue, 5 May 1998 15:44:20 -0500 (EST) Date: Tue, 5 May 1998 15:44:19 -0500 (EST) From: "Roberta J. Barmore" X-Sender: rbarmore@indy3 To: Brian Carling cc: raylarue@gte.net, Boatanchors-qth , glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? In-Reply-To: <199805051605.MAA23608@relay.mnsinc.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Hi! The only problem I have with "QBA" is that it tends to restrict one's preaching to the choir! Folks like me, who run low power and aren't on the air very often, tend to want to work anybody we can find--and for that, CQ (called or, more often, answered) works just fine. Most of 'em get a kick out of hearing "rig hr one 6L6!" --And the ones that don't usually ask what it is. (One fellow in TX even wrote for the schematic!) (BTW, the mil Z-sig ZBA means "cause of delay is _____." It sort of applies, if we take QBA to be similar. Stick with the Q-sig--lest you receive a reply from a South African comm'l station! My favorite Z-sig is ZAO: "Can't understand voice. Use telegraphy." H'mmm, wonder if W9ZAO is taken? And ZAB could be useful: "Your speed key improperly adjusted." Not that we ever hear *that* on the bands). 73, --Bobbi KB9GKX "RJ" rbarmore@indy.net Roberta J. (Bobbi) Barmore FISTS #3388 * G-QRP #10001 * ARRL * RSGB * WIA Appreciator Of Vacuum-Tube Ham Gear and Vintage Keys From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 18:18:13 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id SAA08933 for ; Tue, 5 May 1998 18:18:12 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id OAA04620 for glowbugs-outgoing; Tue, 5 May 1998 14:44:01 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from pacs01.infoave.net (20C00D02@pacs01.InfoAve.Net [165.166.0.11]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id OAA04613 for ; Tue, 5 May 1998 14:43:54 -0700 (PDT) Received: from tetrode ("port 3472"@[149.149.42.10]) by InfoAve.Net (PMDF V5.1-10 #23426) with SMTP id <01IWOLF1ZTZG8ZE3FS@InfoAve.Net> for glowbugs@piobaire.mines.uidaho.edu; Tue, 5 May 1998 17:43:20 EDT Date: Tue, 05 May 1998 16:47:23 -0500 From: Conard Murray WS4S Subject: Re: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? To: Sandy W5TVW , Jack Meadows , glowbugs@piobaire.mines.uidaho.edu Message-id: <001401bd786f$64b79de0$0a2a9595@tetrode.ece.tntech.edu> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 4.72.2106.4 Content-type: text/plain; charset="iso-8859-1" Content-transfer-encoding: 7bit X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V4.72.2106.4 X-Priority: 3 Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Sandy said: ---> According to my old ACP131, "QBA" means: What is the horizontal >visibility >at........? (place) > Answer: The horizontal visibility at....(place) at.....hours >is......(distance). So, can we reinterpret this to mean : QBA?: Can you see across the room for all the old radio junk piled up in your shack? answered by: QBA1: stacked up one foot, visibility ok. QBA2: stacked up 2 feet, where are the wall outlets? and so on until: QBA8: I can't get out of the shack. Call the rescue squad caving and extrication team. ZUT! de Conard, WS4S From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 18:51:52 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id SAA25934 for ; Tue, 5 May 1998 18:51:51 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id PAA05071 for glowbugs-outgoing; Tue, 5 May 1998 15:12:57 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from dfw-ix5.ix.netcom.com (dfw-ix5.ix.netcom.com [206.214.98.5]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id PAA05066 for ; Tue, 5 May 1998 15:12:54 -0700 (PDT) Received: (from smap@localhost) by dfw-ix5.ix.netcom.com (8.8.4/8.8.4) id RAA06622; Tue, 5 May 1998 17:11:50 -0500 (CDT) Date: Tue, 5 May 1998 17:11:50 -0500 (CDT) Message-Id: <199805052211.RAA06622@dfw-ix5.ix.netcom.com> Received: from val-ca3-04.ix.netcom.com(206.217.130.68) by dfw-ix5.ix.netcom.com via smap (V1.3) id rma006583; Tue May 5 17:11:14 1998 From: mjsilva@ix.netcom.com (michael silva) Subject: Re: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? To: glowbugs@piobaire.mines.uidaho.edu To: boatanchors@listserve.tempe.gov Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Brian wrote: > >Now folks here is an idea that may have some validity! > >I don't like to sign as AF4K/BA >because it sounds like I am in some foreign country!! > >HOW ABOUT instead of calling CQ we call >QBA QBA QBA de AF4K AF4K AF4K I've wanted to convey the same information myself. Since it's been pointed out that QBA is already defined, how about QVT? Not defined AFAIK; covers commercial, military and homebrew, big and small, as long as it glows; and has a fabulous rhythm. Plus people will answer Bobbi's CQs just to find out what it means! 73, Mike, KK6GM From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 20:18:54 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id UAA22743 for ; Tue, 5 May 1998 20:18:53 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id QAA06004 for glowbugs-outgoing; Tue, 5 May 1998 16:52:00 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id QAA05999 for ; Tue, 5 May 1998 16:51:54 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Tue, 5 May 1998 16:51:54 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? In-Reply-To: <199805052211.RAA06622@dfw-ix5.ix.netcom.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I thought I once had a list of "Q" and "Z" signals which ran from QAA/ZAA through QZZ/ZZZ. Have they all gone away, like CW in the Coast Guard!?!?!?!?!?! Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 20:18:57 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id UAA16720 for ; Tue, 5 May 1998 20:18:56 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id QAA06016 for glowbugs-outgoing; Tue, 5 May 1998 16:52:37 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id QAA06011 for ; Tue, 5 May 1998 16:52:34 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Tue, 5 May 1998 16:52:33 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> RE: Q and Z sigs... Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I have a scanner, if that would help. Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 20:43:04 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id UAA26158 for ; Tue, 5 May 1998 20:43:03 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id RAA06369 for glowbugs-outgoing; Tue, 5 May 1998 17:15:30 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mead.wanet.net (mead.wanet.net [205.229.176.135]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id RAA06364 for ; Tue, 5 May 1998 17:15:26 -0700 (PDT) Received: from LOCALNAME (d205229186048.socal.wanet.com [205.229.186.48]) by mead.wanet.net (8.8.7/8.8.7) with SMTP id RAA12094 for ; Tue, 5 May 1998 17:14:48 -0700 (PDT) Date: Tue, 5 May 1998 17:14:48 -0700 (PDT) Message-Id: <3.0.16.19980505171033.69377b82@SOCAL.WANet.com> X-Sender: k6qq@SOCAL.WANet.com X-Mailer: Windows Eudora Pro Version 3.0 (16) To: glowbugs@piobaire.mines.uidaho.edu From: John Moriarity Subject: Re: GB> Re: [BoatAnchors] "Q" signals Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Be careful when making up Q signals. According to an article I read by Kenneth Brown, G0PSW, there are Q signals before QR that (were?) used by the British Army. For example, QAU meant "I am waterlogged". My special favorite is QGG, meaning "send the pony by the next train". 73, John, K6QQ From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 22:55:25 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id WAA09732 for ; Tue, 5 May 1998 22:55:25 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id TAA07715 for glowbugs-outgoing; Tue, 5 May 1998 19:23:52 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from main.aeneas.net (root@main.aeneas.net [207.203.176.23]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id TAA07710 for ; Tue, 5 May 1998 19:23:48 -0700 (PDT) Received: from [207.203.177.35] (pmj320.aeneas.net [207.203.177.35]) by main.aeneas.net (8.6.12/8.6.9) with SMTP id VAA12895; Tue, 5 May 1998 21:24:37 -0500 X-Sender: w5hvv@mail.aeneas.net Message-Id: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Tue, 5 May 1998 21:23:18 +0600 To: "Roberta J. Barmore" , glowbugs@piobaire.mines.uidaho.edu, BOATANCHORS@LISTSERV.TEMPE.GOV From: w5hvv@aeneas.net (Roderick M. Fitz-Randolph) Subject: Re: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > (BTW, the mil Z-sig ZBA means "cause of delay is _____." It sort of >applies, if we take QBA to be similar. Stick with the Q-sig--lest you >receive a reply from a South African comm'l station! My favorite >Z-sig is ZAO: "Can't understand voice. Use telegraphy." H'mmm, wonder if >W9ZAO is taken? And ZAB could be useful: "Your speed key improperly >adjusted." Not that we ever hear *that* on the bands). > > 73, > --Bobbi __________________________________________________________________________ Bobbi, when I was handling CW traffic from Ascension Island as AFE83 back up to Patrick AFB (AFE70) and was also bringing the old obsolete DC-4s over from Recife, Brazil back in 1956-57, we used to use Z-codes. I've got a few good stories to tell about the use of the one that stands for, "Place a competent operator on the circuit". If my ancient memory cells work anymore, I recall it was ZBJ.... not sure tho. Do you (or anyone else) know where we can get a complete set of the Z-codes? Rod, N5HV w5hvv@aeneas.net From glowbugs-owner@piobaire.mines.uidaho.edu Wed May 6 01:06:08 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id BAA01056 for ; Wed, 6 May 1998 01:06:06 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id VAA09184 for glowbugs-outgoing; Tue, 5 May 1998 21:35:33 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from koto.qnet.com (mta@koto.qnet.com [207.155.37.7]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id VAA09179 for ; Tue, 5 May 1998 21:35:30 -0700 (PDT) Date: Tue, 5 May 1998 21:35:30 -0700 (PDT) Message-Id: <199805060435.VAA09179@piobaire.mines.uidaho.edu> Received: from k56-palm-02-06.ca.qnet.com ([207.155.33.158]) by koto.qnet.com (Post.Office MTA v3.1.2 release (PO203-101c) ID# 3-41930U500L2S100) with SMTP id AAA13411 for ; Tue, 5 May 1998 21:34:42 -0700 X-Sender: jmc@pop3.av.qnet.com X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: glowbugs@piobaire.mines.uidaho.edu From: JMcAulay Subject: GB> Q-Signals Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO When it comes to "Service Abbreviations" (AKA Q-Signals), one I'm rather surprised no one has mentioned recently is the ever-popular QLF? This, some may recall, is used when one wishes to enquire, "Are you sending with your left foot?" As an affirmative response, the abbreviation is, of course, simply followed by a period. 73 John WA6QPL From glowbugs-owner@piobaire.mines.uidaho.edu Wed May 6 08:29:23 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id IAA24481 for ; Wed, 6 May 1998 08:29:22 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id FAA15139 for glowbugs-outgoing; Wed, 6 May 1998 05:03:33 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.xmission.com (mail.xmission.com [198.60.22.22]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id FAA15132 for ; Wed, 6 May 1998 05:03:29 -0700 (PDT) Received: from slc22h.modem.xmission.com (xmission.com) [166.70.9.22] by mail.xmission.com with esmtp (Exim 1.82 #2) id 0yX2uv-0003OS-00; Wed, 6 May 1998 06:03:22 -0600 Message-ID: <355052A7.3F5B58D0@xmission.com> Date: Wed, 06 May 1998 06:08:10 -0600 From: Dexter Francis Reply-To: cwest@xmission.com Organization: CWest Tube Sales X-Mailer: Mozilla 4.05 (Macintosh; I; PPC) MIME-Version: 1.0 To: michael silva , glowbugs@piobaire.mines.uidaho.edu Subject: GB> Re: --.- ...- . References: <199805052211.RAA06622@dfw-ix5.ix.netcom.com> Content-Type: text/plain; charset=us-ascii; x-mac-type="54455854"; x-mac-creator="4D4F5353" Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Gosh, I could even ID that one! (Therefore, I like it!) -df *** CWest - P.O. Box 22443 Salt Lake City, Utah 84122 *** *Visit our Web Page @ http://www.xmission.com/~cwest* From glowbugs-owner@piobaire.mines.uidaho.edu Wed May 6 10:21:40 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id KAA31376 for ; Wed, 6 May 1998 10:21:39 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id GAA17103 for glowbugs-outgoing; Wed, 6 May 1998 06:52:40 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from getnet.com (gn2.getnet.com [207.254.1.12]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id GAA17091 for ; Wed, 6 May 1998 06:52:35 -0700 (PDT) Received: from localhost (jackmead@localhost) by getnet.com (8.8.8/8.8.7) with SMTP id GAA16152; Wed, 6 May 1998 06:52:22 -0700 (MST) Date: Wed, 6 May 1998 06:52:22 -0700 (MST) From: Jack Meadows To: John Moriarity cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Re: [BoatAnchors] "Q" signals In-Reply-To: <3.0.16.19980505171033.69377b82@SOCAL.WANet.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO What is the signal for QQQ? de, W7QQQ Jack p.s. maybe I shouldn't ask. On Tue, 5 May 1998, John Moriarity wrote: > Be careful when making up Q signals. According to an article > I read by Kenneth Brown, G0PSW, there are Q signals before QR > that (were?) used by the British Army. For example, QAU meant > "I am waterlogged". > > My special favorite is QGG, meaning "send the pony by the > next train". > > 73, > > John, K6QQ > > > From glowbugs-owner@piobaire.mines.uidaho.edu Wed May 6 12:55:33 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id MAA12486 for ; Wed, 6 May 1998 12:55:31 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA19939 for glowbugs-outgoing; Wed, 6 May 1998 09:20:57 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from tntech.edu (SYSTEM@gemini.tntech.edu [149.149.11.7]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA19929 for ; Wed, 6 May 1998 09:20:51 -0700 (PDT) Received: from [149.149.25.17] ("port 2048"@fh303.chem.tntech.edu) by tntech.edu (PMDF V5.1-10 #24187) with ESMTP id <01IWPMC7SBQ48WXTS9@tntech.edu> for glowbugs@piobaire.mines.uidaho.edu; Wed, 6 May 1998 11:20:04 CDT Date: Wed, 06 May 1998 11:22:01 -0500 From: "Dr. Dan Swartling" Subject: GB> Q signals To: glowbugs@piobaire.mines.uidaho.edu Message-id: MIME-version: 1.0 Content-type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO According to the Allied Communications Publication 131 (B), amended: QBA - What is the horizontal visibility at (place)? The horizontal visibility at (place) at ..... hours is (distance figures and units). There is no listing for QAT. There is QAR - May I stop listening on the watch frequency for ... minutes? and QAU - I am about to jettison fuel. and QAQ - Am I near a prohibited area? and QAP - Shall I listen for you on .... kHz (MHz)? and QAZ - Are you experiencing communications difficulties through flying in a storm? QOA to QQZ are reserved for the Maritime Services; however, no meanings have been assigned to date. This is why I occaisonally use QPP, as in "Have to go QPP AS K" which I am sure is a non-sanctioned usage. I rather like QBA but would hesitate to use it. I would use QAT without hesitating for a second. Any other comments? (Please forward this to the BA and GB lists for me. TNX) Dan ************************************************************************ * Dan Swartling DSwart@tntech.edu * * Assistant Professor of Chemistry djsx@woodlawn.uchicago.edu * * Tennessee Tech University DSwart@aol.com * * Cookeville, TN 38505 http://gemini.tntech.edu/~DSwart/ * * * * When life give you lemons, build a battery * ************************************************************************ From glowbugs-owner@piobaire.mines.uidaho.edu Wed May 6 14:39:08 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id OAA18897 for ; Wed, 6 May 1998 14:39:07 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA21828 for glowbugs-outgoing; Wed, 6 May 1998 10:58:00 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id KAA21819; Wed, 6 May 1998 10:57:43 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Wed, 6 May 1998 10:57:43 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: Conard Murray WS4S cc: Dr Dan Swartling , glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Q signals In-Reply-To: <022701bd7910$e5e268e0$0a2a9595@tetrode.ece.tntech.edu> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > Hi Dan, > Congrats on the callsign ..... do you have a copy of the ACP 131(B)? > I think a bunch of guys would like to see that scanned and put on the web. > Conard I have a scanner. Sandy is sending me the ACP. Where do you guys want it and in what format? Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Wed May 6 15:44:49 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id PAA04504 for ; Wed, 6 May 1998 15:44:49 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA22730 for glowbugs-outgoing; Wed, 6 May 1998 12:11:30 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from dfw-ix8.ix.netcom.com (dfw-ix8.ix.netcom.com [206.214.98.8]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id MAA22725 for ; Wed, 6 May 1998 12:11:25 -0700 (PDT) Received: (from smap@localhost) by dfw-ix8.ix.netcom.com (8.8.4/8.8.4) id OAA19939; Wed, 6 May 1998 14:10:22 -0500 (CDT) Date: Wed, 6 May 1998 14:10:22 -0500 (CDT) Message-Id: <199805061910.OAA19939@dfw-ix8.ix.netcom.com> Received: from val-ca3-46.ix.netcom.com(206.217.130.110) by dfw-ix8.ix.netcom.com via smap (V1.3) id rma019915; Wed May 6 14:10:09 1998 From: mjsilva@ix.netcom.com (michael silva) Subject: GB> Looking for info on beam-deflection tube mixers To: glowbugs@piobaire.mines.uidaho.edu To: boatanchors@listserv.tempe.gov Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Hi all, I'm thinking out my next project, a portable CW transceiver, and I'd like to know what you all know about using beam-deflection tubes (not the 7360 due to its cost, but I've got some 6ME8s floating around) as mixers and detectors. What exactly are the advantages in both mixer and detector service? I gather that they are fairly quiet -- true? Any other reason to use or not use them in either circuit application? 73, Mike, KK6GM From glowbugs-owner@piobaire.mines.uidaho.edu Wed May 6 16:15:36 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id QAA30574 for ; Wed, 6 May 1998 16:15:35 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA23110 for glowbugs-outgoing; Wed, 6 May 1998 12:41:54 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from smtp03.primenet.com (daemon@smtp03.primenet.com [206.165.6.133]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id MAA23105 for ; Wed, 6 May 1998 12:41:49 -0700 (PDT) Received: (from daemon@localhost) by smtp03.primenet.com (8.8.8/8.8.8) id MAA11153; Wed, 6 May 1998 12:40:58 -0700 (MST) Received: from usr04.primenet.com(206.165.6.204) via SMTP by smtp03.primenet.com, id smtpd011126; Wed May 6 12:40:53 1998 Date: Wed, 6 May 1998 12:40:51 -0700 (MST) From: Chris Trask To: michael silva cc: glowbugs@piobaire.mines.uidaho.edu, boatanchors@listserv.tempe.gov Subject: Re: GB> Looking for info on beam-deflection tube mixers In-Reply-To: <199805061910.OAA19939@dfw-ix8.ix.netcom.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On Wed, 6 May 1998, michael silva wrote: > Hi all, > > I'm thinking out my next project, a portable CW transceiver, and I'd > like to know what you all know about using beam-deflection tubes (not > the 7360 due to its cost, but I've got some 6ME8s floating around) as > mixers and detectors. What exactly are the advantages in both mixer > and detector service? I gather that they are fairly quiet -- true? > Any other reason to use or not use them in either circuit application? > Another envelope is the 6AR8. These tubes were very susceptible to magnetice fields (just like a CRT) and were usually shielded. For all intents and purposes, they are very much like a long-tailed pair, which is a differential pair of triodes having a common cathode which is then connected to the plate of a third tube used as a current source. For mixers, modulators, and synchronous detectors they're great. ,----------------------. Circuit Design for the / What's all this \ RF Impaired / extinct stuff, anyhow? / \ _______,--------------' Chris Trask / N7ZWY _ |/ Principal Engineer oo\ ATG Design Services (__)\ _ P.O. Box 25240 \ \ .' `. Tempe, Arizona 85285-5240 \ \ / \ \ '" \ Technical Editor, . ( ) \ QRP Quarterly '-| )__| :. \ QRP ARCI 9464 | | | | \ '. c__; c__; '-..'>.__ Email: ctrask@primenet.com http://www.primenet.com/~ctrask Graphics by Loek Frederiks From glowbugs-owner@piobaire.mines.uidaho.edu Thu May 7 00:54:30 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id AAA23920 for ; Thu, 7 May 1998 00:54:28 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id VAA29756 for glowbugs-outgoing; Wed, 6 May 1998 21:18:44 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from relay1.Hawaii.edu (root@relay1.hawaii.edu [128.171.3.53]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id VAA29751 for ; Wed, 6 May 1998 21:18:41 -0700 (PDT) Received: from uhunix4.its.Hawaii.Edu ([128.171.44.54]) by relay1.Hawaii.Edu with SMTP id <148513(7)>; Wed, 6 May 1998 18:17:54 -1000 Received: from localhost by uhunix4.its.Hawaii.Edu with SMTP id <216703(9)>; Wed, 6 May 1998 18:17:48 -1000 Date: Wed, 6 May 1998 18:17:44 -1000 From: Jeffrey Herman X-Sender: jeffreyh@uhunix4 To: Bill Hawkins cc: broehrig@admin.aurora.edu, keng@uidaho.edu, glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Glowbugs and QSK... In-Reply-To: <199805021634.LAA08029@citrus.iaxs.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Why not just add an extra set of contacts to your handkey? You can also use the key's gap adjusting screw (to the rear) as a NC contact point - great for muting your rcvr's speaker during key-down. Jeff KH2PZ (who has an antenna lead-in wires and speaker wires running to and from his key!) From glowbugs-owner@piobaire.mines.uidaho.edu Thu May 7 09:31:53 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id JAA14666 for ; Thu, 7 May 1998 09:31:52 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id FAA04874 for glowbugs-outgoing; Thu, 7 May 1998 05:57:01 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from tntech.edu (SYSTEM@gemini.tntech.edu [149.149.11.7]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id FAA04869 for ; Thu, 7 May 1998 05:56:57 -0700 (PDT) Received: from [149.149.25.17] ("port 2054"@fh303.chem.tntech.edu) by tntech.edu (PMDF V5.1-10 #24187) with ESMTP id <01IWQTHAI1588WY1ST@tntech.edu> for glowbugs@piobaire.mines.uidaho.edu; Thu, 7 May 1998 07:55:46 CDT Date: Thu, 07 May 1998 07:57:49 -0500 From: "Dr. Dan Swartling" Subject: GB> Q codes To: glowbugs@piobaire.mines.uidaho.edu Message-id: MIME-version: 1.0 Content-type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO The ACP131(B) list can be found at: http://www.ac6v.com/pagel.html Lots of good stuff at this sight. Dan ************************************************************************ * Dan Swartling DSwart@tntech.edu * * Assistant Professor of Chemistry djsx@woodlawn.uchicago.edu * * Tennessee Tech University DSwart@aol.com * * Cookeville, TN 38505 http://gemini.tntech.edu/~DSwart/ * * * * When life give you lemons, build a battery * ************************************************************************ From glowbugs-owner@piobaire.mines.uidaho.edu Fri May 8 14:44:19 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id OAA18052 for ; Fri, 8 May 1998 14:44:18 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id LAA25645 for glowbugs-outgoing; Fri, 8 May 1998 11:09:41 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from hotmail.com (f27.hotmail.com [207.82.250.38]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id LAA25640 for ; Fri, 8 May 1998 11:09:36 -0700 (PDT) Received: (qmail 19197 invoked by uid 0); 8 May 1998 18:08:46 -0000 Message-ID: <19980508180846.19196.qmail@hotmail.com> Received: from 147.49.3.25 by www.hotmail.com with HTTP; Fri, 08 May 1998 11:08:46 PDT X-Originating-IP: [147.49.3.25] From: "Brad Hernlem" To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> RAL Schematic Content-Type: text/plain Date: Fri, 08 May 1998 11:08:46 PDT Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I have tried to download the ral7schematic.ps.gz from the following site but it seems to be munged or something. Anyone know where I can get a copy that is readable (I get PS errors in GhostScript and can't print it out on a PS printer either)? http://www.mines.uidaho.edu/ftp/pub/Glowbugs/Military/ Thanks, Brad ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com From glowbugs-owner@piobaire.mines.uidaho.edu Sat May 9 01:20:38 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id BAA00424 for ; Sat, 9 May 1998 01:20:38 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id VAA07641 for glowbugs-outgoing; Fri, 8 May 1998 21:57:16 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from radiate.indy.net (radiate.indy.net [199.3.65.253]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id VAA07636 for ; Fri, 8 May 1998 21:57:12 -0700 (PDT) Received: from indy3.indy.net (root@indy3.indy.net [199.3.65.14]) by radiate.indy.net (8.8.7/8.8.7) with ESMTP id XAA11728; Fri, 8 May 1998 23:57:42 -0500 (EST) Received: from localhost (rbarmore@localhost [127.0.0.1] (may be forged)) by indy3.indy.net (8.8.7/8.8.7) with SMTP id XAA04264; Fri, 8 May 1998 23:57:39 -0500 (EST) Date: Fri, 8 May 1998 23:57:37 -0500 (EST) From: "Roberta J. Barmore" X-Sender: rbarmore@indy3 To: BA , glowbugs@piobaire.mines.uidaho.edu Subject: GB> Dayton.... Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Hi, Gang! I have been hoping to get to Dayton (the Hamvention, that is) again this year, and have been keeping track of the other listfolks who will be there, especially those with Actual Spaces, as one usually has a 50-50 chance of meetin' 'em. But as of now, it's looking iffy, thanks to a long dull story which I will not tell, as it involves solid-state and some detail design work of which my opinions might be actionable if expressed in print. (In many ways, the usual drill for my line of work). There's an off chance I might be able to work out going there *Friday* and that leads to a question for the More Experienced Tube-slingers: how's the flea market at Dayton on Friday, typically? 73, --Bobbi (Pounding my head against the wall? Why no, I'm not pounding my head against the wall. Besides, it feels so good when I stop). KB9GKX "RJ" rbarmore@indy.net Roberta J. (Bobbi) Barmore FISTS #3388 * G-QRP #10001 * ARRL * RSGB * WIA Appreciator Of Vacuum-Tube Ham Gear and Vintage Keys From glowbugs-owner@piobaire.mines.uidaho.edu Sat May 9 01:58:44 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id BAA32634 for ; Sat, 9 May 1998 01:58:43 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id WAA08149 for glowbugs-outgoing; Fri, 8 May 1998 22:29:25 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from enterprise.powerup.com.au (enterprise.powerup.com.au [203.32.8.37]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id WAA08144 for ; Fri, 8 May 1998 22:29:19 -0700 (PDT) Received: (qmail 4704 invoked from network); 9 May 1998 05:28:32 -0000 Received: from ts5802.powerup.com.au (HELO mkelly) (202.139.238.194) by enterprise.powerup.com.au with SMTP; 9 May 1998 05:28:32 -0000 Message-ID: <3553E979.2CA1@powerup.com.au> Date: Sat, 09 May 1998 15:28:25 +1000 From: Murray Kelly Reply-To: mkelly@powerup.com.au Organization: M P Kelly (Med) P/L X-Mailer: Mozilla 3.01C-NSCP (Win95; I) MIME-Version: 1.0 To: "Roberta J. Barmore" CC: BA , glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Dayton.... References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Roberta J. Barmore wrote: > how's the flea market at Dayton on Friday, typically? > > 73, > --Bobbi If it's not raining it's OK. I had to jump 6" deep 'puddles' on the Fri I was there. :-( ****************************************************************** * Murray Kelly vk4aok mkelly@powerup.com.au * * 29 Molonga Ter. / Graceville/ QLD. 4075/ Australia * * ph/fax Intl+ 61 7 3379 3307 * ****************************************************************** From glowbugs-owner@piobaire.mines.uidaho.edu Sat May 9 04:06:57 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id EAA17431 for ; Sat, 9 May 1998 04:06:55 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id AAA09650 for glowbugs-outgoing; Sat, 9 May 1998 00:42:33 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from sw2031.ki.icl.se (sw2031.ki.icl.se [140.150.92.61]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id AAA09644 for ; Sat, 9 May 1998 00:42:29 -0700 (PDT) Received: from winnie (winnie.pc.fujitsu.se [140.150.83.170] (may be forged)) by sw2031.ki.icl.se (8.8.8/980217PRO) with SMTP id HAA02349; Sat, 9 May 1998 07:40:55 GMT Message-ID: <355407B2.1553@algonet.se> Date: Sat, 09 May 1998 09:37:22 +0200 From: Jan Axing Reply-To: janax@algonet.se Organization: Messy X-Mailer: Mozilla 3.0Gold (Win95; I) MIME-Version: 1.0 To: Ken Gordon CC: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> The Alexanderson alternator, more info. References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Ken Gordon wrote: > > > The Alexanderson alternator in Grimeton, Sweden will be on air May 28 > > at 0930 UTC and 1530 UTC on 17.2 kHz. > > Jan: > > How much power is this thing going to run, and what sort of antennas does > it have? I assume the mode will be CW. What sort of identifier are they > going to send? All 200 kW it can give but much of it will be consumed by the antenna losses. The call sign is SAQ and the mode is A1 (CW). The antenna is the original newly refurbished 1924 vintage system, a vertical with a giant radial system in the ground. Radiation resistance 2 ohms. There are six towers, all 127 meters tall spaced 380 meters. The tower carries the feeder to the six vertical radiators. In it's heyday, regular transmissions were done over the pool to the US east coast. Once upon the time there was a receiving antenna located close to Gothenburg but unfortunately it's gone. It was sort of a Beverage, very long. I think the receiver station building is preserved, thoo. There is a picture of the transmitting antenna on the web pages. > I am wondering if, by modifying my regennie to hear that far down, if I > could even hear that station over here? I used to listen to a lot of the > VLF stations from all over the world, but they were usually running a lot > of power and really big antennas, and I was using RAKs, an RBL, an R-389, > and the VLF version of the SRR-11 at the time. The standard approach over here is a wire, a diode, an audio oscillator and a hifi using the turntable input and keeping the dog outside :-) A little more is called for over there. On the east coast, a resonant loop antenna or even a ferrite rod perhaps coupled to existing ham antennas will do. You will need some luck in the 7 land. Propagation is ground wave so there will be a lot of losses over Canada. I would go backpacking far away from urban noise with a regenerator and a frame antenna in your place, maybe with a roll of wire to string up the trees, beverage style. Boy. I would like to key this beast once, just once... Jan, SM5GNN From glowbugs-owner@piobaire.mines.uidaho.edu Sat May 9 11:58:23 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id LAA02229 for ; Sat, 9 May 1998 11:58:22 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA14406 for glowbugs-outgoing; Sat, 9 May 1998 08:35:47 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from imo16.mx.aol.com (imo16.mx.aol.com [198.81.17.38]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id IAA14400 for ; Sat, 9 May 1998 08:35:38 -0700 (PDT) Received: from MNHopkins@aol.com by imo16.mx.aol.com (IMOv14.1) id FEXIa00148 for ; Sat, 9 May 1998 11:34:21 -0400 (EDT) From: MNHopkins Message-ID: Date: Sat, 9 May 1998 11:34:21 EDT To: glowbugs@piobaire.mines.uidaho.edu Mime-Version: 1.0 Subject: GB> Dayton FM as existential experience Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit X-Mailer: AOL 3.0 16-bit for Windows sub 61 Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO The flea market at Dayton is an existential experience. Spreading out from the HARA Arena, the first rank is taken by two types of folks: Hardcore capitalists and opportunists who have figured out that it is cheaper and easier to take a space or two than try to park. (TIP: park at Salem Mall, no witches, and ride the bus -- BAs welcome on the bus). The variety of things offered is remarkable. A 6X20 trailer of hardline conductor was half enpty, or full, by late Saturday. Prices are also remarkable by Texas standards. When last I was there I was asked to find a HW-16 "if it is not too expensive." That is like meeting some one in Israel who is not a Jew -- they are there and they stand out. The only one even close was a rusty "as is" for $35 which my son, the 11-year-old KC5FDL and I left knowing that by Texas standards such a price would not wash. In fact, I bought just two receive converters on the trip, which was in '95 but second son is up this year so we will be there with the pet ferrets and all. Lore has it that prices fall Sunday, but I did not see that. This is the once a year opportunity for many and lots of things go at remarkable markup. WA5VJB, the CQ VHF columnist and Dayton habitue, says he reads the Dayton prices to be about 150% of the Arlington (Dallas) Hamcom. All that said, the bottomfeeding is OK. Lots of boxes under tables and still in trucks yield useful stuff at live with prices. In fact, that is where I have to shop as an Ameco CN-50 6M converter still on the table at $35 Sunday at is out of my reach. I cannot get $20 here. 73 de ab5L, michael in dallas, student of Tecraft and International (ICM) ham products and mementoes of Six Meters' Golden Age: 1957-58 Michael Hopkins Box 226841 Dallas, TX 75222 MNHopkins@AOL.com From glowbugs-owner@piobaire.mines.uidaho.edu Sat May 9 12:11:36 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id MAA04059 for ; Sat, 9 May 1998 12:11:36 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA14717 for glowbugs-outgoing; Sat, 9 May 1998 08:49:26 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id IAA14711; Sat, 9 May 1998 08:49:20 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Sat, 9 May 1998 08:49:20 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: Jan Axing cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> The Alexanderson alternator, more info. In-Reply-To: <355407B2.1553@algonet.se> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Thanks very much for the info, Jan. It is much appreciated. > > Boy. I would like to key this beast once, just once... > Boy......your are not the Alone Stranger in those sentiments!!!!!!!!! Ken From glowbugs-owner@piobaire.mines.uidaho.edu Sat May 9 22:14:45 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id WAA09683 for ; Sat, 9 May 1998 22:14:44 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id SAA21564 for glowbugs-outgoing; Sat, 9 May 1998 18:49:50 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from main.aeneas.net (root@main.aeneas.net [207.203.176.23]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id SAA21559 for ; Sat, 9 May 1998 18:49:46 -0700 (PDT) Received: from [207.203.177.59] (pmj344.aeneas.net [207.203.177.59]) by main.aeneas.net (8.6.12/8.6.9) with SMTP id UAA14235; Sat, 9 May 1998 20:51:10 -0500 X-Sender: w5hvv@mail.aeneas.net Message-Id: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Sat, 9 May 1998 20:49:21 +0600 To: BOATANCHORS@LISTSERV.TEMPE.GOV, glowbugs@piobaire.mines.uidaho.edu From: w5hvv@aeneas.net (Roderick M. Fitz-Randolph) Subject: GB> Thoughts of Yesteryear Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO In 1955-56 I was on Grand Turk Island, working for RCA Service Co. as a Timing Technician, and was operating as VP5RR with an NC-173, a Harvey- Wells TBS-50C and a 700 foot long wire, 10 feet off the ground. Got my first DXCC from there in less than a year... can you imagine? One day, while working on the modulator on the TBS-50, Two RCA Range Managers (Bill Coulter and another) walked in to the Hamshack. I hurriedly twisted some wire ends together, cranked up the gear and called CQ. I had a pipeline to Europe from Grand Turk back in those days and a CT1 answered my call. He was 40 over 9. Remember, this was the days of AM and carriers and things like that.... and it was the days of one of the highest sunspot cycles in history. Bill Coulter and the other Range Manager were totally impressed..... and so, when I told them I wanted to be the first RCA personnel to hit Ascension Island (even if I had to sweep the floors, there), it got favorable notice. Soon thereafter, I was summoned to Patrick AFB and was prepped to become the first permanent change of station (PCS) personnel to go to Ascension. As I got on the ancient DC4 and was about to head for Ascension, via Trinidade and Recife, Brazil, I was asked by Bill Coulter to reassure him that I could indeed copy code. That was news to me. I had really gotten with the microphone after passing my test as W5HVV and I could and did work some CW from Grand Turk but I was nobody's CW traffic handler..... I was soon to learn, though. As we passed through Trinidade, I ventured into town and tried to purchase 2,000 rounds of .22 ammo for my 9-shot nickol plated H&R .22 pistol. That is grist for another tale! I almost got arrested for starting a revolution but got on the plane with 3,000, not 2,000, rounds of ammo. Boy, was the Resident Magistrate on Ascension surprised when I showed up with a pistol and 3,000 rounds of .22 ammo!! Amazingly enough, he (having an excellent command of the U.S. Constitution) granted me a license to "Keep and Bear Arms"!!!! I still have that priceless piece of paper somewhere! I had to create a firing range at the base of one of the very high hills of volcanic ash and fly a red flag made of a tea towel soaked in red food die but it worked. I sported my shiny pistol (in a leather holster I made) as I walked from the Comm Van to the firing range wearing nothing but the belt, holster, swimming trunks, and shoes. The St. Helenian natives gawked.... and gawked! Then, as any young (I was 25 at the time) ham would do, I applied to Mr. Williams, the Resident Magistrate, for an amateur radio license so that I could operate from Ascension. I had sold my TBS-50 and NC-173 to another ham on Grand Turk and had purchased a 75A3 and 32V3 for the trip to Ascension. I used the 75A3 in place of the somewhat shaky NC-183Ds that RCA supplied me with and I found that I could drive the BC-610 with the 32V3 just beautifully. I was quite pleased that, with some discerning care, I could interpolate to the nearest 100 cycles on the dial of the 75A3 and 32V3 when the 75A3 was calibrated with the crystal oscillator that I calibrated against WWV by a wire brought from the crystal oscillator on the 75A3 to close proximity to the NC-183D. Jury-rigged, but it worked well. So it was with some surprise that Mr. Williams, the Resident Magistrate, read to me the requirements for becoming licensed as an amateur on Ascension Is in 1956. He informed me, in a very nice way, that I needed to have an absorbtion type wavemeter to tell what frequency on which my transmitter was transmitting. I couldn't believe my ears. I tried my best to explainto him that my 32V3 put out only a very pure signal with virtually no harmonic content, etc., etc., but to no avail. As I spoke to him, I felt the flush in my cheeks and the hair beginning to rise on the back of my neck. How in the name of Christ could the man responsible for the British Cable and Wireless, Ltd. on Ascension Island expect someone to use an absorbtion type wavemeter to check the frequency of the famous Collins 32V3?????? The conversation came to a faltering halt when I could not bring myself to lower my principles..... and thus, I never did get that much coveted ZD8 call! Talk about cutting off one's nose to spite his face. Nevertheless, I continued to use the 32V3 to drive the BC-610 on 7525 KHz and handle 5 letter code groups from the Navy AROIC to Patrick AFB and vice versa. I slept in the Comm Van, next to the runway on Ascension, behind the two BC-610s on an army cot. Communications with Patrick AFB took place in the late evening and soon after dawn. I built a 6 element wire beam for 7525 KHz that was suspended from four telephone poles with a wire suspension system on both sides. It worked quite well, considering that all I had to feed it with was EE8 twisted pair that laid on the ground! The beam never got more than 4 feet off the ground but worked as well as the high dipole I usually used. I went exploring a lot, while on Ascension in the 50's. I found a Browning air-cooled .50 caliber machine gun that had been in a wing of a plane that had augered into a hill at the end of the runway and, after soaking it in diesel fuel for four days, got it to where the bolt would go back and forth. I mounted it on a concrete pedestal in front of the quonset huts close to the rhombic antennas that were near one end of the runway. However, the British took a dim view of it (even tho the firing pin was sheared off and I had no ammo for it) and they confiscated it. Some people have little sense of humor. I have many, many tales of Ascension I could tell.... such as the ZBM code I was sent once from the radioman on an incoming DC4.... and how I handled that one..... pretty cool. Also, how I managed to survive with only a scant 10 wpm capability when I first hit Ascension and the AFE70 ops at Patrick AFB in Florida were used to sending 30 wpm or better. Another story, another time. Hope I haven't caused any harsh feelings about relating my Ascension Island tales on the Reflector..... Just had to do it. All the talk about boat anchors and glowbugs just got my nostalgia juices flowing at top speed. Rod, N5HV w5Hvv@aeneas.net From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 10 03:08:19 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id DAA16654 for ; Sun, 10 May 1998 03:08:18 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id XAA24214 for glowbugs-outgoing; Sat, 9 May 1998 23:42:44 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from uhura.concentric.net (uhura.concentric.net [206.173.119.93]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id XAA24209 for ; Sat, 9 May 1998 23:42:40 -0700 (PDT) Received: from marconi.concentric.net (marconi [206.173.119.71]) by uhura.concentric.net (8.8.8/(98/04/23 5.10)) id CAA03574; Sun, 10 May 1998 02:41:54 -0400 (EDT) [1-800-745-2747 The Concentric Network] Received: from ts005d08.alq-nm.concentric.net (ts005d08.alq-nm.concentric.net [206.173.164.116]) by marconi.concentric.net (8.8.8) id CAA13087; Sun, 10 May 1998 02:41:50 -0400 (EDT) Message-Id: <1.5.4.32.19980510063944.006ba71c@pop3.concentric.net> X-Sender: jdport@pop3.concentric.net X-Mailer: Windows Eudora Light Version 1.5.4 (32) Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Sun, 10 May 1998 00:39:44 -0600 To: w5hvv@aeneas.net, glowbugs@piobaire.mines.uidaho.edu From: DEVCOM Subject: Re: GB> Thoughts of Yesteryear Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Oh, but I LIKE these tall tales..... I think the .50 cal Browning was an especially nice touch. Those few I saw in VietNam were wicked looking, very "businesslike" looking machinery. I think the only ones I saw were mounted on pedestals overlooking the cabs on "Duece 'N Half" trucks for defense while motoring along the picturesque Ho Chi Minh trail and vicinities. I carried the PRC-25 manpack radio and a M-60 "... You're a radio expert, right? Here, you get to carry this one!" My MOS was 35M40, avionics electronics repair, later to make ssgt E6 as 35P40, so of course in true Army tradition our guys pulled KP and guard duty while our vans full of test equipment and service gear gathered dust. Repairs beyond replacing fuses and swapping "black boxes" were handed off to the next echelon. Bah. I made quite a few extra bucks repairing stereos and tape decks and other consumer electronics for my fellow GI's in Camp Eagle, just outside Hue and Phu Bai, without which I'd have put my expensive Army electronics repair training to precious little use. The 7.62 (.30 cal) machine gun was MUCH more fun to operate than the radio, even for a ham fanatick like me. We heard stories about some chopper pilots of the big Chinook birds who would take up their people to several thousand feet heights and "call home" on their HF rigs, via the funny looking zig-zag wire antennas mounted on the sides of the fuselage... but we never found one willing to take US for such a "ride". We DID have a good MARS station at Camp Eagle ("The All American Eagle" was a partial phonetic of their call) where we could walk only a mile or so across camp at about 2:00 AM when it would hopefully be daytime back home and we could call up our wives or families via friendly phone patches back in the USA. "I love you too, OVER OVER...." Bootlegging was a big thing over there. We had Armed Forces AM and FM stations playing music and news but much time, especially after hours, was spent using the comm radios such as the PRC-25 hooked to unauthorized homebrew antennas up high in the air over the comm repair van as CB-style chitchat, music, argument, etc stations. We'd hook up tape decks to special mike jumpers and adapters jury rigged so that we could play music and requests for a while and then chat for a while and log up a list of requests from the troops in listening mode without tape decks of their own. Occasionally late at night we'd hear a weak signal whispering very faintly, "LURPS" (Long Range Reconnaissance Patrols) thanking us for the music and making whispered requests, holed up somewhere on a remote Viet Cong trail waiting to ambush the bad guys, and making surreptitious calls back to camp to request "Inna Godda Da Vida" one more time. The "secret channel" was obtained by turning both channel selector knobs all the way to the extreme limit to the last channel, which never seemed to be used by anyone other than the "GI bootleg network". We always hoped we'd eventually make it back to "The World" and visit with each other legally, via the ham bands, CB, or some legal means. I've never heard from any of those other nuts since. Anyone ever talk to "Froggy" in the "Nam"? Another thing I always thought was highly stupid of the Army was their parts stock system. We had thousands of parts of all types, but they were all sealed inside foil lined green O.D. paper packets with ONLY a FEDERAL STOCK NUMBER on the outside of the pack, never anything indicating what the cat hair was actually inside the pack. Trying to look up FSN's for things like 1K ohm resistors in those pre-computer days was absolutely underwhelming. We wound up ripping dozens and dozens of packs partly open so we could see what was inside, often to no avail, especially since the stock numbers had no relation to the insides AND they were not sequential. That may be one of the worst fates we inflicted on the Viet Cong.... when we abandoned 'Nam in disgrace they had to sort through all that stuff trying to figure it out. Must have set their technology back 20 years or more. Jim W5AOX At 08:49 PM 5/9/98 +0600, you wrote: >In 1955-56 I was on Grand Turk Island, working for RCA Service Co. as a >Timing Technician, and was operating as VP5RR with an NC-173, a Harvey- >Wells TBS-50C and a 700 foot long wire, 10 feet off the ground. From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 10 10:28:00 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id KAA31960 for ; Sun, 10 May 1998 10:28:00 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA27925 for glowbugs-outgoing; Sun, 10 May 1998 07:06:40 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from imo14.mx.aol.com (imo14.mx.aol.com [198.81.17.36]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id HAA27920 for ; Sun, 10 May 1998 07:06:36 -0700 (PDT) Received: from MNHopkins@aol.com by imo14.mx.aol.com (IMOv14.1) id CJCDa15187; Sun, 10 May 1998 10:05:09 -0400 (EDT) From: MNHopkins Message-ID: <31ff5c30.3555b416@aol.com> Date: Sun, 10 May 1998 10:05:09 EDT To: jdport@concentric.net Cc: glowbugs@piobaire.mines.uidaho.edu Mime-Version: 1.0 Subject: GB> M-60 + Manpack = testosterone Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit X-Mailer: AOL 3.0 16-bit for Windows sub 61 Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Jim Don't know how much a Manpack '25 radio weighed, but a M-60 is 29 pounds dry and about 6 feet long -- it was some of those the Feds were using as the excuse to get a warrant to raid David Koeresh's Mt. Carmel. Affidavit said there was danger they would "destroy the evidence." Cannot think how. Maybe a tank? Anyway, we salute you. We were all tougher back then but to carry a M-60 and something else was tough indeed. 73 de ab5L who had dangerous duty too...college campus. From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 10 14:32:54 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id OAA25260 for ; Sun, 10 May 1998 14:32:54 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id LAA29721 for glowbugs-outgoing; Sun, 10 May 1998 11:09:27 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id LAA29716 for ; Sun, 10 May 1998 11:09:24 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Sun, 10 May 1998 11:09:24 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Receivers... Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I have been studying my 1956 ARRL Handbook the last few days. I do this just for the pure enjoyment of it. The receiver section is kind of fun. There is a "one" tube regennie, a 3 tube 2 bander, and a 5 tube double-conversion 2 bander (80 and 40). The 3 tube 2 bander is a repackaged Jones Super Gainer. Interesting. The 5 tube job uses a regen detector and provides single-signal reception on CW with a final IF of 100 kHz. Neat. Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 10 22:33:04 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id WAA26416 for ; Sun, 10 May 1998 22:33:03 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id SAA03462 for glowbugs-outgoing; Sun, 10 May 1998 18:55:04 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from relay.mnsinc.com (relay1.mnsinc.com [206.55.3.25]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id SAA03448 for ; Sun, 10 May 1998 18:54:57 -0700 (PDT) Received: from COMPUTER (bry.mnsinc.com [206.239.150.65]) by relay.mnsinc.com (8.8.5/8.7.3) with SMTP id VAA07521; Sun, 10 May 1998 21:54:18 -0400 (EDT) Message-Id: <199805110154.VAA07521@relay.mnsinc.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: raylarue@gte.net, Boatanchors-qth , glowbugs@piobaire.mines.uidaho.edu Date: Sun, 10 May 1998 21:51:25 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: Re: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? Reply-to: bry@mnsinc.com Priority: normal References: <199805051605.MAA23608@relay.mnsinc.com> In-reply-to: X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On 5 May 98 at 9:53, Ken wrote: > Say, Bry, I worked W7ZFB last night on 7051 or so. He was 599 into > Moscow despite a) QRN (a storm building up), and b) his 40 watts > from the Elmac pair. This about 0300. Well done, Ken - I am listening on 3579 and it is QUIET, except fopr some QRN crashes! No sigs at all! I QNI'd to a net earlier on about 3583 or so.They were in Western PA and heard me fine of course. **************************************************** *** 73 from Radio AF4K/G3XLQ Gaithersburg, MD USA * ** E-mail to: bry@mnsinc.com * *** ICQ 6124470 *** ** http://www.mnsinc.com/bry/ * **************************************************** AM International #1024, TENTEN #13582. GRID FM19. Rigs: Valiant, DX-60/HG-10, FT-840, TM-261A, Harvey Wells Bandmaster, Drake 2 C. TEN-TEN #13582, DXCC #17763, Bicentennial WAS From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 10 22:34:04 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id WAA19904 for ; Sun, 10 May 1998 22:34:03 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id SAA03454 for glowbugs-outgoing; Sun, 10 May 1998 18:55:00 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from relay.mnsinc.com (relay1.mnsinc.com [206.55.3.25]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id SAA03441 for ; Sun, 10 May 1998 18:54:54 -0700 (PDT) Received: from COMPUTER (bry.mnsinc.com [206.239.150.65]) by relay.mnsinc.com (8.8.5/8.7.3) with SMTP id VAA07518 for ; Sun, 10 May 1998 21:54:16 -0400 (EDT) Message-Id: <199805110154.VAA07518@relay.mnsinc.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: glowbugs@piobaire.mines.uidaho.edu Date: Sun, 10 May 1998 21:51:24 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: GB> Re: "Q" signals for use of antique rigs? Reply-to: bry@mnsinc.com Priority: normal In-reply-to: <354F51FB.F4BAD285@xmission.com> X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On 5 May 98 at 11:53, Dexter wrote: > QUQ - Shall I train my searchlight nearly vertical on a cloud, > occulting if possible and, if your aircraft is seen, > deflect the beam up-wind on on the water or land, to > facilitate your landing? Roll on the floor laughing VERY loudly! That is the BEST Q-signal ever!!! They should have added a few more details! ZUT es ZAO!! Bry, AF4K **************************************************** *** 73 from Radio AF4K/G3XLQ Gaithersburg, MD USA * ** E-mail to: bry@mnsinc.com * *** ICQ 6124470 *** ** http://www.mnsinc.com/bry/ * **************************************************** AM International #1024, TENTEN #13582. GRID FM19. Rigs: Valiant, DX-60/HG-10, FT-840, TM-261A, Harvey Wells Bandmaster, Drake 2 C. TEN-TEN #13582, DXCC #17763, Bicentennial WAS From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 10 22:34:49 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id WAA24812 for ; Sun, 10 May 1998 22:34:48 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id SAA03463 for glowbugs-outgoing; Sun, 10 May 1998 18:55:05 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from relay.mnsinc.com (relay1.mnsinc.com [206.55.3.25]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id SAA03451 for ; Sun, 10 May 1998 18:54:58 -0700 (PDT) Received: from COMPUTER (bry.mnsinc.com [206.239.150.65]) by relay.mnsinc.com (8.8.5/8.7.3) with SMTP id VAA07526; Sun, 10 May 1998 21:54:19 -0400 (EDT) Message-Id: <199805110154.VAA07526@relay.mnsinc.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: Boatanchors-qth , glowbugs@piobaire.mines.uidaho.edu Date: Sun, 10 May 1998 21:51:26 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? Reply-to: bry@mnsinc.com Priority: normal In-reply-to: <354BDCAD.53E4F180@gte.net> X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO BY the way guys - does anyone plan on being on the air for the VINTAGE FIELD DAY activity that is being publicized by ELECTRIC RADIO? We are trying to get a group together to fire up some rigs portable on AM and CW over at NIST in Gaithersburg that weekend, but need to borrow a Genny! ZUT es ZAO! Bry, AF4K On 2 May 98 at 22:55, Ray wrote: > During field day, members of AReU (East Tampa), are planning on > firing up a couple classic and antique rigs. It will be a great > opportunity for new hams to see a little of our "roots" in operation > and for old hams to be reminded of some of the enjoyable times in > the past. One of our rigs is a compact one tube, WW 2 spy rig. It > is xtal controlled and runs only about 10 watts. > > Is there a "Q" signal which could be transmitted along with ones > call, to indicate the use of an classic/antique? I was thinking > like QBA or QAT? I think if I heard such an ID among all the other > QRM, I would try harder to make the contact. If not, anyone game > for coining one? 73, Ray, W4BYG > > > --- > Submissions boatanchors@qth.net > **************************************************** *** 73 from Radio AF4K/G3XLQ Gaithersburg, MD USA * ** E-mail to: bry@mnsinc.com * *** ICQ 6124470 *** ** http://www.mnsinc.com/bry/ * **************************************************** AM International #1024, TENTEN #13582. GRID FM19. Rigs: Valiant, DX-60/HG-10, FT-840, TM-261A, Harvey Wells Bandmaster, Drake 2 C. TEN-TEN #13582, DXCC #17763, Bicentennial WAS From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 10 22:35:47 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id WAA28055 for ; Sun, 10 May 1998 22:35:46 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id SAA03532 for glowbugs-outgoing; Sun, 10 May 1998 18:57:41 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from relay.mnsinc.com (relay1.mnsinc.com [206.55.3.25]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id SAA03527 for ; Sun, 10 May 1998 18:57:37 -0700 (PDT) Received: from COMPUTER (bry.mnsinc.com [206.239.150.65]) by relay.mnsinc.com (8.8.5/8.7.3) with SMTP id VAA07605; Sun, 10 May 1998 21:57:00 -0400 (EDT) Message-Id: <199805110157.VAA07605@relay.mnsinc.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: glowbugs@piobaire.mines.uidaho.edu, boatanchors@listserve.tempe.gov Date: Sun, 10 May 1998 21:54:11 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: GB> "Q" signals for use of antique rigs? Reply-to: bry@mnsinc.com Priority: normal In-reply-to: <199805052211.RAA06622@dfw-ix5.ix.netcom.com> X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On 5 May 98 at 17:11, michael wrote: > I've wanted to convey the same information myself. Since it's been > pointed out that QBA is already defined, how about QVT? Not defined > AFAIK; covers commercial, military and homebrew, big and small, as > long as it glows; and has a fabulous rhythm. Yes, Mike, I think in retrospect that QVT would be fine. I would have preferred QBA, but really QVT conveys it just as well, and if it is undefined then there is no confusion for those SWLs in Tanzania or on the banks of the Ganges, listening in to our BA/GB QSOs!!! ZUT es ZAO Bry, AF4K **************************************************** *** 73 from Radio AF4K/G3XLQ Gaithersburg, MD USA * ** E-mail to: bry@mnsinc.com * *** ICQ 6124470 *** ** http://www.mnsinc.com/bry/ * **************************************************** AM International #1024, TENTEN #13582. GRID FM19. Rigs: Valiant, DX-60/HG-10, FT-840, TM-261A, Harvey Wells Bandmaster, Drake 2 C. TEN-TEN #13582, DXCC #17763, Bicentennial WAS From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 10 22:37:57 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id WAA20901 for ; Sun, 10 May 1998 22:37:56 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id TAA03832 for glowbugs-outgoing; Sun, 10 May 1998 19:08:31 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from relay.mnsinc.com (relay1.mnsinc.com [206.55.3.25]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id TAA03820 for ; Sun, 10 May 1998 19:08:20 -0700 (PDT) Received: from COMPUTER (bry.mnsinc.com [206.239.150.65]) by relay.mnsinc.com (8.8.5/8.7.3) with SMTP id WAA07981; Sun, 10 May 1998 22:07:39 -0400 (EDT) Message-Id: <199805110207.WAA07981@relay.mnsinc.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: Dexter Francis Date: Sun, 10 May 1998 22:04:47 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: GB> Re: --.- ...- . Reply-to: bry@mnsinc.com CC: glowbugs@piobaire.mines.uidaho.edu Priority: normal In-reply-to: <355052A7.3F5B58D0@xmission.com> X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On 6 May 98 at 6:08, Dexter wrote: > Gosh, I could even ID that one! > (Therefore, I like it!) > > -df QVE? I guess that must mean, "Are you taking an amateur exam later today?" **************************************************** *** 73 from Radio AF4K/G3XLQ Gaithersburg, MD USA * ** E-mail to: bry@mnsinc.com * *** ICQ 6124470 *** ** http://www.mnsinc.com/bry/ * **************************************************** AM International #1024, TENTEN #13582. GRID FM19. Rigs: Valiant, DX-60/HG-10, FT-840, TM-261A, Harvey Wells Bandmaster, Drake 2 C. TEN-TEN #13582, DXCC #17763, Bicentennial WAS From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 10 22:39:26 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id WAA32354 for ; Sun, 10 May 1998 22:39:26 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id TAA03825 for glowbugs-outgoing; Sun, 10 May 1998 19:08:26 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from relay.mnsinc.com (relay1.mnsinc.com [206.55.3.25]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id TAA03819 for ; Sun, 10 May 1998 19:08:19 -0700 (PDT) Received: from COMPUTER (bry.mnsinc.com [206.239.150.65]) by relay.mnsinc.com (8.8.5/8.7.3) with SMTP id WAA07978 for ; Sun, 10 May 1998 22:07:37 -0400 (EDT) Message-Id: <199805110207.WAA07978@relay.mnsinc.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: glowbugs@piobaire.mines.uidaho.edu Date: Sun, 10 May 1998 22:04:47 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: GB> "Q" signals Reply-to: bry@mnsinc.com Priority: normal In-reply-to: <3.0.16.19980505171033.69377b82@SOCAL.WANet.com> X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I haven't had this much fun in ages! These Q-signals could get really dangerous if we have a QSO on the amateur bands with a British army unit (very unlikely I know!) On 5 May 98 at 17:14, John wrote: > Be careful when making up Q signals. According to an article > I read by Kenneth Brown, G0PSW, there are Q signals before QR > that (were?) used by the British Army. For example, QAU meant > "I am waterlogged". > My special favorite is QGG, meaning "send the pony by the > next train". Ah but John - what about these: QCD? - "Can you please send your next transmission via the CD player?" QIK? - "Am I sending too fast?" QIT - "Please end all transmissions immediately!" QAK? - "Is that a duck I hear in the background?" QAX? - "Are there SEVERAL ducks in the background?" QID? - "Have you got any money we can borrow?" QAB - "Please hail a taxi for us." QAT - "Please check for a feline laying across your key contacts" QAV? - "Are you transmitting from underground?" QIL - "Please take notes with pen and ink." QIN? - "Are you transmitting from Eskimo country?" QIP - "Please send more jokes." QIR? - "Are you a member of the Lambda Club?" QIV? - "Is the operator's sending-hand shaking too much?" and my favourite one: QVC? - "Are you wearing any nice inexpensive jewelry that you paid too much for without first having seen it?" - sorry, couldn't resist! **************************************************** *** 73 from Radio AF4K/G3XLQ Gaithersburg, MD USA * ** E-mail to: bry@mnsinc.com * *** ICQ 6124470 *** ** http://www.mnsinc.com/bry/ * **************************************************** AM International #1024, TENTEN #13582. GRID FM19. Rigs: Valiant, DX-60/HG-10, FT-840, TM-261A, Harvey Wells Bandmaster, Drake 2 C. TEN-TEN #13582, DXCC #17763, Bicentennial WAS From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 10 22:39:29 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id WAA04922 for ; Sun, 10 May 1998 22:39:28 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id TAA03929 for glowbugs-outgoing; Sun, 10 May 1998 19:09:46 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from relay.mnsinc.com (relay1.mnsinc.com [206.55.3.25]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id TAA03923 for ; Sun, 10 May 1998 19:09:41 -0700 (PDT) Received: from COMPUTER (bry.mnsinc.com [206.239.150.65]) by relay.mnsinc.com (8.8.5/8.7.3) with SMTP id WAA08010; Sun, 10 May 1998 22:08:53 -0400 (EDT) Message-Id: <199805110208.WAA08010@relay.mnsinc.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: Jack Meadows , glowbugs@piobaire.mines.uidaho.edu Date: Sun, 10 May 1998 22:06:05 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: Re: GB> Re: [BoatAnchors] "Q" signals Reply-to: bry@mnsinc.com Priority: normal References: <3.0.16.19980505171033.69377b82@SOCAL.WANet.com> In-reply-to: X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On 6 May 98 at 6:52, Jack wrote: > What is the signal for QQQ? It means, "Do you have difficulty with stammering?" :-) **************************************************** *** 73 from Radio AF4K/G3XLQ Gaithersburg, MD USA * ** E-mail to: bry@mnsinc.com * *** ICQ 6124470 *** ** http://www.mnsinc.com/bry/ * **************************************************** AM International #1024, TENTEN #13582. GRID FM19. Rigs: Valiant, DX-60/HG-10, FT-840, TM-261A, Harvey Wells Bandmaster, Drake 2 C. TEN-TEN #13582, DXCC #17763, Bicentennial WAS From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 10 22:42:50 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id WAA27050 for ; Sun, 10 May 1998 22:42:49 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id TAA04196 for glowbugs-outgoing; Sun, 10 May 1998 19:17:07 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from relay.mnsinc.com (relay1.mnsinc.com [206.55.3.25]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id TAA04188 for ; Sun, 10 May 1998 19:17:03 -0700 (PDT) Received: from COMPUTER (bry.mnsinc.com [206.239.150.65]) by relay.mnsinc.com (8.8.5/8.7.3) with SMTP id WAA08259 for ; Sun, 10 May 1998 22:16:25 -0400 (EDT) Message-Id: <199805110216.WAA08259@relay.mnsinc.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: glowbugs@piobaire.mines.uidaho.edu Date: Sun, 10 May 1998 22:13:36 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: Re: GB> Q signals Reply-to: bry@mnsinc.com Priority: normal In-reply-to: X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On 6 May 98 at 11:22, Dr. Dan wrote: > According to the Allied Communications Publication 131 (B), amended: > There is QAR - May I stop listening on the watch frequency for ... > minutes? Gosh and I though that one was "Can you arrange ground transportation?" **************************************************** *** 73 from Radio AF4K/G3XLQ Gaithersburg, MD USA * ** E-mail to: bry@mnsinc.com * *** ICQ 6124470 *** ** http://www.mnsinc.com/bry/ * **************************************************** AM International #1024, TENTEN #13582. GRID FM19. Rigs: Valiant, DX-60/HG-10, FT-840, TM-261A, Harvey Wells Bandmaster, Drake 2 C. TEN-TEN #13582, DXCC #17763, Bicentennial WAS From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 10 22:51:02 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id WAA21676 for ; Sun, 10 May 1998 22:51:01 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id TAA04236 for glowbugs-outgoing; Sun, 10 May 1998 19:17:34 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from relay.mnsinc.com (relay1.mnsinc.com [206.55.3.25]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id TAA04229 for ; Sun, 10 May 1998 19:17:30 -0700 (PDT) Received: from COMPUTER (bry.mnsinc.com [206.239.150.65]) by relay.mnsinc.com (8.8.5/8.7.3) with SMTP id WAA08283; Sun, 10 May 1998 22:16:48 -0400 (EDT) Message-Id: <199805110216.WAA08283@relay.mnsinc.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: Ken Gordon , ws4s@INFOAVE.NET Date: Sun, 10 May 1998 22:13:36 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: Re: GB> Q signals Reply-to: bry@mnsinc.com CC: glowbugs@piobaire.mines.uidaho.edu Priority: normal References: <022701bd7910$e5e268e0$0a2a9595@tetrode.ece.tntech.edu> In-reply-to: X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On 6 May 98 at 10:57, Ken wrote: > > Hi Dan, > > Congrats on the callsign ..... do you have a copy of the ACP 131(B)? > > I think a bunch of guys would like to see that scanned and put on the web. > > Conard > > I have a scanner. Sandy is sending me the ACP. Where do you guys > want it and in what format? > > Ken W7EKB How about a plain text file or an html file... it could go straight onto the web that way and folks can retrieve it and use whatever format they wish... **************************************************** *** 73 from Radio AF4K/G3XLQ Gaithersburg, MD USA * ** E-mail to: bry@mnsinc.com * *** ICQ 6124470 *** ** http://www.mnsinc.com/bry/ * **************************************************** AM International #1024, TENTEN #13582. GRID FM19. Rigs: Valiant, DX-60/HG-10, FT-840, TM-261A, Harvey Wells Bandmaster, Drake 2 C. TEN-TEN #13582, DXCC #17763, Bicentennial WAS From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 10 22:52:31 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id WAA09878 for ; Sun, 10 May 1998 22:52:30 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id TAA04263 for glowbugs-outgoing; Sun, 10 May 1998 19:17:43 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from relay.mnsinc.com (relay1.mnsinc.com [206.55.3.25]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id TAA04238 for ; Sun, 10 May 1998 19:17:34 -0700 (PDT) Received: from COMPUTER (bry.mnsinc.com [206.239.150.65]) by relay.mnsinc.com (8.8.5/8.7.3) with SMTP id WAA08263; Sun, 10 May 1998 22:16:27 -0400 (EDT) Message-Id: <199805110216.WAA08263@relay.mnsinc.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: glowbugs@piobaire.mines.uidaho.edu Date: Sun, 10 May 1998 22:13:38 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: GB> Glowbugs and QSK... Reply-to: bry@mnsinc.com CC: Jeffrey Herman , broehrig@admin.aurora.edu, keng@uidaho.edu, glowbugs@piobaire.mines.uidaho.edu, bill@iaxs.net Priority: normal References: <199805021634.LAA08029@citrus.iaxs.net> In-reply-to: X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO A small favor: Can we ask everyone to use the regular GLOWBUGS address in their TO line, instad of in the CC: line? It would make it a lot easier to reply, rather than have to dig out the address from a string of them. On 6 May 98 at 18:17, Jeffrey wrote: > Why not just add an extra set of contacts to your handkey? You can > also use the key's gap adjusting screw (to the rear) as a NC contact > point - great for muting your rcvr's speaker during key-down. > Jeff KH2PZ (who has an antenna lead-in wires and speaker wires > running to and from his key!) This is fine for those that love glass arm and send for hours on end with a straight key! For the rest who use automatic keyers we need ideas! I am not comfortable with noisy relays and the contacts on most of the Radio Shark junk will not key the cathode current on a Valiant for long before they weld! **************************************************** *** 73 from Radio AF4K/G3XLQ Gaithersburg, MD USA * ** E-mail to: bry@mnsinc.com * *** ICQ 6124470 *** ** http://www.mnsinc.com/bry/ * **************************************************** AM International #1024, TENTEN #13582. GRID FM19. Rigs: Valiant, DX-60/HG-10, FT-840, TM-261A, Harvey Wells Bandmaster, Drake 2 C. TEN-TEN #13582, DXCC #17763, Bicentennial WAS From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 10 23:07:53 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id XAA29863 for ; Sun, 10 May 1998 23:07:52 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id TAA04992 for glowbugs-outgoing; Sun, 10 May 1998 19:39:15 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from relay.mnsinc.com (relay1.mnsinc.com [206.55.3.25]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id TAA04974 for ; Sun, 10 May 1998 19:39:10 -0700 (PDT) Received: from COMPUTER (bry.mnsinc.com [206.239.150.65]) by relay.mnsinc.com (8.8.5/8.7.3) with SMTP id WAA08735 for ; Sun, 10 May 1998 22:38:31 -0400 (EDT) Message-Id: <199805110238.WAA08735@relay.mnsinc.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: glowbugs@piobaire.mines.uidaho.edu Date: Sun, 10 May 1998 22:35:43 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: GB> 'Way back when Reply-to: bry@mnsinc.com Priority: normal In-reply-to: <199804290036.RAA27323@piobaire.mines.uidaho.edu> X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO But... television was invented by the Scotsman, John Logie-Baird! From glowbugs-owner@piobaire.mines.uidaho.edu Mon May 11 02:24:25 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id CAA08670 for ; Mon, 11 May 1998 02:24:25 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id WAA06876 for glowbugs-outgoing; Sun, 10 May 1998 22:57:54 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id WAA06868; Sun, 10 May 1998 22:57:46 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Sun, 10 May 1998 22:57:46 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: Brian Carling cc: ws4s@INFOAVE.NET, glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Q signals In-Reply-To: <199805110216.WAA08283@relay.mnsinc.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > > How about a plain text file or an html file... it could go straight > onto the web that way and folks can retrieve it and use whatever > format they wish... Zounds....good to me. Ken From glowbugs-owner@piobaire.mines.uidaho.edu Mon May 11 02:57:18 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id CAA06855 for ; Mon, 11 May 1998 02:57:17 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id XAA07216 for glowbugs-outgoing; Sun, 10 May 1998 23:30:51 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from uhura.concentric.net (uhura.concentric.net [206.173.119.93]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id XAA07211 for ; Sun, 10 May 1998 23:30:45 -0700 (PDT) Received: from cliff.concentric.net (cliff [206.173.119.90]) by uhura.concentric.net (8.8.8/(98/04/23 5.10)) id CAA22847; Mon, 11 May 1998 02:29:58 -0400 (EDT) [1-800-745-2747 The Concentric Network] Received: from ts003d22.alq-nm.concentric.net (ts003d22.alq-nm.concentric.net [206.173.164.82]) by cliff.concentric.net (8.8.8) id CAA09690; Mon, 11 May 1998 02:29:56 -0400 (EDT) Message-Id: <1.5.4.32.19980511062735.0068a8bc@pop3.concentric.net> X-Sender: jdport@pop3.concentric.net (Unverified) X-Mailer: Windows Eudora Light Version 1.5.4 (32) Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Mon, 11 May 1998 00:27:35 -0600 To: glowbugs@piobaire.mines.uidaho.edu From: DEVCOM Subject: Re: GB> 'Way back when Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO At 10:35 PM 5/10/98 -0400, you wrote: >But... television was invented by the Scotsman, John Logie-Baird! > Well...... wouldja care to include any docs or data on this heresy?? First I've heard of it, unless of course you refer to RCA's attempts to claim it was invented "in-house". Jim W5AOX ... ardent admirer of the small guys like Philo Pharnsworth and Edwin Armstrong ... From glowbugs-owner@piobaire.mines.uidaho.edu Mon May 11 11:45:42 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id LAA06501 for ; Mon, 11 May 1998 11:45:41 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA12285 for glowbugs-outgoing; Mon, 11 May 1998 08:12:25 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from zeus.maxtor.com (zeus.maxtor.com [134.6.32.3]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id IAA12280 for ; Mon, 11 May 1998 08:12:22 -0700 (PDT) Received: from Longmont64.Maxtor.COM (longmont64.mlm.maxtor.com [134.6.79.210]) by zeus.maxtor.com (8.6.9/8.6.9) with SMTP id JAA06372 for ; Mon, 11 May 1998 09:11:19 -0600 Received: by Longmont64.Maxtor.COM with VINES-ISMTP; Mon, 11 May 98 9:11:26 MDT Date: Mon, 11 May 98 9:11:25 MDT Message-ID: X-Priority: 3 (Normal) To: From: "Mark Dittmar" Reply-To: Subject: GB> QSK for glowbugs X-Incognito-SN: 368 X-Incognito-Version: 4.11.23 MIME-Version: 1.0 Content-type: text/plain; charset=us-ascii Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Hello- I'm not sure if anyone has mentioned this one yet, but there is a simple circuit in "Understanding Amateur Radio" ( 1977, I think ) that uses a single 6AH6 as a switch tube and a minimum of components to implement full QSK. It's quite slick- I think I will build one. I think the same circuit may even be in the 1992 ARRL handbook. 73, Mark Dittmar AB0CW From glowbugs-owner@piobaire.mines.uidaho.edu Mon May 11 12:38:20 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id MAA21296 for ; Mon, 11 May 1998 12:38:19 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA13085 for glowbugs-outgoing; Mon, 11 May 1998 09:08:36 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id JAA13080; Mon, 11 May 1998 09:08:31 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Mon, 11 May 1998 09:08:31 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: Mark Dittmar cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> QSK for glowbugs In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > Hello- > > I'm not sure if anyone has mentioned this one yet, but there is a > simple circuit in "Understanding Amateur Radio" ( 1977, I think ) that > uses a single 6AH6 as a switch tube and a minimum of components to > implement full QSK. It's quite slick- I think I will build one. I think > the same circuit may even be in the 1992 ARRL handbook. > > 73, > > Mark Dittmar > AB0CW Could you, by any chance, mail me a copy of that article so I can put it on my web page for all here to access? Ken Gordon W7EKB 226 N. Washington St. Moscow, Idaho 83843 (208)-882-8745 From glowbugs-owner@piobaire.mines.uidaho.edu Mon May 11 12:58:09 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id MAA14468 for ; Mon, 11 May 1998 12:58:07 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA13193 for glowbugs-outgoing; Mon, 11 May 1998 09:12:59 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from tigris.netnet.net (tigris.netnet.net [198.70.64.210]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA13188 for ; Mon, 11 May 1998 09:12:56 -0700 (PDT) Received: from netnet.net (grayct-1-3.netnet.net [206.40.107.6]) by tigris.netnet.net (8.8.8/8.8.8) with ESMTP id LAA00075 for ; Mon, 11 May 1998 11:11:45 -0500 (CDT) Message-ID: <35571EB4.EA70D785@netnet.net> Date: Mon, 11 May 1998 10:52:20 -0500 From: Dwight W9YQ Reply-To: dgbcms@netnet.net Organization: Oconto Machine & Tool X-Mailer: Mozilla 4.04 [en] (Win95; I) MIME-Version: 1.0 To: glowbugs Subject: GB> Wanted to swap for HF Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I've just acquired a several pieces of ham equipment from an estate. I'm interested in making a simple swap for a HF transceiver and/or HF amplifier in good condition. No money nor dollars need be involved, I'm willing to meet 1/2-way, within a day or so of travel from Northeastern Wisconsin (near Green Bay), depending on the offer. Make me an offer! What have you got? Will take the first reasonable offer received for the lot, cash or rig! Swan HF-700S SS-16B 3.5-28Mhz, 1979 vintage, tube type transceiver with PSU-3A power supply and manual, cosmetically mint, receives great, output is low on transmit. Heathkit HR-10B receiver with manual, cosmetically mint, seems to work Heathkit SB-300 receiver, has the (3) filters, cosmetically mint, seems work, with manual, no power cord Heathkit SB-400 transmitter, with manual, cosmetically mint, lights up, haven't tested transmit as it don't have the cables needed for inter-connection to the SB-300 for tranceiving, also no power cord Heathkit HD-1416 Code Practice Oscillator, no manual, works Ramsey E-Z Key CMOS CW Keyer Model no. CW-7 with manual and matching case, works Ramsey FHT-1 Fox-Hunt, 2 Meter, 5W Transmitter, no case, 80% assembled, no manual Ramsey AA-7 All Band HF, VHF, UHF Active Antenna, assembled, manual, no case Ramsey 40 meter QRP, HR-40, all mode receiver, assembled, manual, matching Case and Knob Set, works Ramsey 40 meter, QRP-40, 1 watt, CW Transmitter, assembled, with manual and Matching Case and Knob Set Swan SWR-1A SWR/Watt meter 100W,3.5 to 150 Mhz at 1000 watts Radio Shack Digital SWR/Power Meter, rated at 2000 watts, Cat. 21-257 Radio Shack SWR/Power Meter, rated at 2000 watts, Cat. 21-524 Zoom 28K Internal Fax Modem and a 14.4 Fax/Voice Internal Modem June 1992 Sam Amateur Data base on 3-1/2 disks Several QRZ CD-ROM's, Jan 1996 vol. 6, QRZ CD-ROM Dec 1996 vol. 8, QRZ CD-ROM Apr 1997, vol. 9 call sign database Hustler Mobile Ant System includes MO-1 fold over mast, standard resonators for 80, 40, 15, and 10 meters, SSM-3 Stainless Spring, VP-1 Tri-band Adapter, working condition Carolina Bug Katcher 10 through 40 meters with IM-1 Inducti-Match with docs, working condition Butternut HF6V vertical 80, 40, 30, 20, 15, 10m with docs, in working condition Pro-Am HF Mobile antenna for 40 meters PHF-40 (similar to a Hamstick) Either e-mail me or call at 906-826-7422. -- 73 ... Dwight ... de W9YQ From glowbugs-owner@piobaire.mines.uidaho.edu Mon May 11 13:36:13 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id NAA12698 for ; Mon, 11 May 1998 13:36:13 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA13865 for glowbugs-outgoing; Mon, 11 May 1998 09:51:56 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from dogbert.xroads.com (dogbert.xroads.com [206.222.124.36]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA13860 for ; Mon, 11 May 1998 09:51:52 -0700 (PDT) Received: from wturansk-mobl (slip51.xroads.com [206.222.125.85]) by dogbert.xroads.com (8.8.5/8.8.5) with SMTP id JAA04541; Mon, 11 May 1998 09:51:24 -0700 (MST) Message-Id: <3.0.5.32.19980511095049.01190430@mail.xroads.com> X-Sender: turansky@mail.xroads.com X-Mailer: QUALCOMM Windows Eudora Light Version 3.0.5 (32) Date: Mon, 11 May 1998 09:50:49 -0700 To: boatanchors@theporch.com, glowbugs@piobaire.mines.uidaho.edu, BOATANCHORS@LISTSERV.TEMPE.GOV From: Walt Turansky Subject: GB> WTB: 1L10 Spectrum Analyzer Plug-in Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Jose's posting reminded me that I've been looking for a Tek 1L10 Spectrum Analyzer (1 to 36 MHz) Plug-in for quite a while. If anyone has one in working condition that they would like to part with please send me an email. 73 de KW7WT, Walt From glowbugs-owner@piobaire.mines.uidaho.edu Mon May 11 14:44:01 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id OAA10740 for ; Mon, 11 May 1998 14:43:57 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id LAA15747 for glowbugs-outgoing; Mon, 11 May 1998 11:05:02 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from dewdrop2.mindspring.com (dewdrop2.mindspring.com [207.69.200.82]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id LAA15739 for ; Mon, 11 May 1998 11:04:59 -0700 (PDT) Received: from default (user-37kb6jf.dialup.mindspring.com [207.69.154.111]) by dewdrop2.mindspring.com (8.8.5/8.8.5) with SMTP id OAA20474 for ; Mon, 11 May 1998 14:04:38 -0400 (EDT) Message-Id: <3.0.1.32.19980511140414.00695424@pop.mindspring.com> X-Sender: k4oah@pop.mindspring.com X-Mailer: Windows Eudora Light Version 3.0.1 (32) Date: Mon, 11 May 1998 14:04:14 -0400 To: glowbugs@piobaire.mines.uidaho.edu From: Garey Barrell Subject: Re: GB> QSK for glowbugs Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Mark - You might want to look at the June 1957 article titled "A Novel Electronic TR Switch". The switch described in that article was available as a manufactured unit in 1957, and I used one for a while with a Globe Chief 90 transmitter. The unit was mounted inside the transmitter, and coupled to the Hi-Z side of the transmitter tank coil. I worked quite well, and the only "proprietary" component was a toroidal (very rare in those days!) output transformer. The transformer was even sold separately for those who wished to build their own. The article in the 1992 Handbook has a description of the transformer. Needless to say, the original did NOT have the SS switching circuitry in it! Anyway, just a bit of "first-hand" experience with the product.. 73, Garey - K4OAH At 09:11 AM 5/11/98 MDT, you wrote: > > Hello- > > I'm not sure if anyone has mentioned this one yet, but there is a >simple circuit in "Understanding Amateur Radio" ( 1977, I think ) that >uses a single 6AH6 as a switch tube and a minimum of components to >implement full QSK. It's quite slick- I think I will build one. I think >the same circuit may even be in the 1992 ARRL handbook. > > 73, > > Mark Dittmar > AB0CW > > From glowbugs-owner@piobaire.mines.uidaho.edu Mon May 11 15:12:23 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id PAA27175 for ; Mon, 11 May 1998 15:12:22 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id LAA16591 for glowbugs-outgoing; Mon, 11 May 1998 11:37:08 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id LAA16586; Mon, 11 May 1998 11:37:00 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Mon, 11 May 1998 11:36:59 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: Garey Barrell cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> QSK for glowbugs In-Reply-To: <3.0.1.32.19980511140414.00695424@pop.mindspring.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > You might want to look at the June 1957 article titled "A Novel Electronic > TR Switch". In which magazine, book, etc.? Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Mon May 11 17:13:26 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id RAA11651 for ; Mon, 11 May 1998 17:13:25 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id NAA18290 for glowbugs-outgoing; Mon, 11 May 1998 13:28:04 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from relay1.Hawaii.edu (root@relay1.hawaii.edu [128.171.3.53]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id NAA18267 for ; Mon, 11 May 1998 13:27:58 -0700 (PDT) Received: from uhunix5.its.Hawaii.Edu ([128.171.44.55]) by relay1.Hawaii.Edu with SMTP id <148528(4)>; Mon, 11 May 1998 10:27:31 -1000 Received: from localhost by uhunix5.its.Hawaii.Edu with SMTP id <188963(10)>; Mon, 11 May 1998 10:27:10 -1000 Date: Mon, 11 May 1998 10:27:02 -1000 From: Jeffrey Herman X-Sender: jeffreyh@uhunix5 To: Ken Gordon cc: Garey Barrell , glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> QSK for glowbugs In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO You guys using QSK for your stand-alone xmtrs - do you leave the xmtr's rotary panel switch on "transmit" during your entire QSO? For manual operation with my DX-60 xmtr, I have to go from "standby" to "transmit" on the rotary switch. I've never felt comfortable leaving the switch in the "transmit" position while receiving, but for QSK operation, I guess that's what I'd have to do. Jeff KH2PZ From glowbugs-owner@piobaire.mines.uidaho.edu Mon May 11 17:53:02 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id RAA18636 for ; Mon, 11 May 1998 17:53:02 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id OAA19457 for glowbugs-outgoing; Mon, 11 May 1998 14:17:14 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id OAA19448; Mon, 11 May 1998 14:16:55 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Mon, 11 May 1998 14:16:54 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: Jeffrey Herman cc: Garey Barrell , glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> QSK for glowbugs In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > You guys using QSK for your stand-alone xmtrs - do you leave the xmtr's > rotary panel switch on "transmit" during your entire QSO? Yup. > > For manual operation with my DX-60 xmtr, I have to go from "standby" to > "transmit" on the rotary switch. I've never felt comfortable leaving the > switch in the "transmit" position while receiving, but for QSK operation, > I guess that's what I'd have to do. > Yup. :-) Shouldn't bother it... Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Mon May 11 20:16:37 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id UAA17803 for ; Mon, 11 May 1998 20:16:37 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id QAA22191 for glowbugs-outgoing; Mon, 11 May 1998 16:36:40 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id QAA22184 for ; Mon, 11 May 1998 16:36:37 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Mon, 11 May 1998 16:36:35 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> A big 45 ?... Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I was just given a 4 pin, ceramic based tube, with the name Sylvania F7 on the base, but no other markings. It looks to me like a taller version of the 45 triode, complete with the "springs" on the top ceramic spacer inside which hold the filament wires. The base also has a locating pin sticking out of its side. Am I all wet, or is this a heavy-duty 45? It looks like it would make a good period looking Hartley. Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Mon May 11 23:36:24 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id XAA27314 for ; Mon, 11 May 1998 23:36:23 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id UAA25834 for glowbugs-outgoing; Mon, 11 May 1998 20:08:25 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from uhura.concentric.net (uhura.concentric.net [206.173.119.93]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id UAA25829 for ; Mon, 11 May 1998 20:08:21 -0700 (PDT) Received: from cliff.concentric.net (cliff [206.173.119.90]) by uhura.concentric.net (8.8.8/(98/04/23 5.10)) id XAA16455; Mon, 11 May 1998 23:07:42 -0400 (EDT) [1-800-745-2747 The Concentric Network] Received: from ts001d24.alq-nm.concentric.net (ts001d24.alq-nm.concentric.net [206.173.164.36]) by cliff.concentric.net (8.8.8) id XAA18833; Mon, 11 May 1998 23:06:37 -0400 (EDT) Message-Id: <1.5.4.32.19980512030416.006a76e8@pop3.concentric.net> X-Sender: jdport@pop3.concentric.net (Unverified) X-Mailer: Windows Eudora Light Version 1.5.4 (32) Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Mon, 11 May 1998 21:04:16 -0600 To: glowbugs@piobaire.mines.uidaho.edu From: DEVCOM Subject: Re: GB> Thoughts of Yesteryear Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO At 11:10 PM 5/10/98 +0600, you wrote: >Jim, I enjoyed your dissertation, very much!!! I never got to Nam but >I was all over Thailand, traveling sometimes in a C-131 to the birthplace >of Ho Chi Minh (Nakhon Phenom). It was exciting and lots of fun. > >It had its weird moments, too, like trying to apply Air Force Failure Codes >to the complex digital equipment with which we were monitoring the Sensor >Intrusion Devices (SIDs) that we had sown along the Ho Chi Minh Trail. One >of the AF Failure Codes I remember was "Bird Strike Damage". > >I'll likely relate another happening (no tall tales.... these all happened >just as I relate it.) in a week or two. Are you going to be at Dayton? No, I have no plans for Dayton, though I hope to make the pilgrimage someday soon at least ONCE before I die. But I'm certainly looking forward to YOUR story, along with [hopefully] more details on (?) SIDS etc. Never heard of such things before! I'm continually amazed at the "techie-whizzy" ideas and gadgets and concepts brought into play in this ill-fated war. All we lacked was sensible national leadership. I recently read a very disturbing book about the history of US armaments and firepower and the effects our military blunderings in implementing weapons ideas and systems has had on our history, from the Revolution, including Custer's demise due to the Army's reluctance to equip soldiers with Spencer repeating rifles, and Custer's haste to make a name for himself and "get into action" so fast he ordered his Gatling guns left behind, through the Vietnam conflict and on to today where our soldiers are expected to save us with "single shot" rifles that automatically spit 2 or 3 bullets and then force the user to activate the trigger again in a long-standing US military attempt to "conserve ammunition" instead of "nail the enemy". I was absolutely SHOCKED to read his assertions that the Colt Armalite AR-15 was an AMAZINGLY accurate and DEADLY and RELIABLE weapon before the US Armory system got hold of it and "improved" it into the unliked M-16 and ordered millions of rounds of ammo with poor quality propellant that not only resulted in less-deadly slower muzzle velocities but caused fouling and jamming in a weapon that was issued withOUT a cleaning kit. According to this book (which now I gotta go look up again so I can post the title) the M-16, or more properly it's deadly efficient predecessor the Armalite AR-15, was much more accurate, deadly, and reliable than the Kalashnikov AK-47 which we Vietnam GI's learned to fear. Thanks to the Armory system and politics we got a gun that we feared to fire on full auto because of its problems, and had to face stuttering AK-47's that seemingly would fire full auto all day, after being drug through streams, mud, and rice paddies. I recommend the book and will shortly post its title, though if you're anything like me it will definitely make you angry to read it. To inject SOMETHING glowbuggy into the thread, I'm regaining a desire to see some tubes glowing in the dark again but I certainly was glad to get rid of them in the Army. I've already mentioned the weight and short battery life of the PRC-25 but things were worse (IMHO) in the choppers. Our aircraft FM transceivers had solid state receivers and (faint memory) only one or 2 tubes in the transmitter. Pilots were trained to power up the radios early in the warmup process and wait the prescribed 2 or 3 FULL minutes before transmitting so the tube(s) could be warmed up to prevent "stripping" of the cathodes and resulting loss of output power. Invariably the pilots were in a hurry and "knew it all" anyway and had nasty habits of just turning on the radios just before takeoff, immediately transmitting to ask for tower permission to take off, and not realizing they were killing the finals in their transmitters by doing so. They got their permission since they were so close to the tower they didn't need their lost transmit power to get through, and then wondered why they couldn't be heard when they got out over the "boonies" several miles away. No amount of explaining from us lowly radio techs could convince them that THEY were killing their own radios. About halfway through my tour, about the fall of 1969 I think, someone developed decent VHF power transistors and built them into bolt-in all solid state radios for the army. How wonderful to take the "tuber" out and slide in an all-transistor version that a pilot couldn't ruin! That was a transition in technology we certainly benefited from. Military Chopper radios covered a VERY wide frequency range of maybe 90 to 170 or so MHZ, I don't remember exactly, but the whip antennas were of course not broad enough to efficiently accept and radiate power over the entire range, so motorized antenna matching boxes were used out on the fuselage close to the antenna. Being so close to the tail rotors these were high failure items, with vibration beating the relays and connections to metal flakes and chips. Replaced lots of those.... Also interesting to me was the LOH-6 ("LOACH") observation chopper that used the vertical aluminum nose bracket between the plexiglass windshield bubbles as the VHF antenna, again through a matching network. The entire tiny craft was made mostly of fiberglass so the antenna worked, though I never tried field strength or pattern measurements with them. Now, these things truly involved testosterone... the strategy was for these small lightly armed observation birds to buzz along barely above ground level trying to draw fire from concealed enemy forces, thence to "call down" the firepower lurking a mile or so away from a Huey or Cobra gunship. I've watched these, buzzing around a hot concentration of bad guys, wondering how the devil any of them ever survived. Being Army flyboys they rarely "boogied" to leave the "fun" to their better-armed compatriots in the big gunships; they hung around, "dropped Willy Peter" (White Phosphorous) grenades, and had their own hapless door gunners hammering away with the venerable M-60's. I can't say if it was testosterone or stupidity, but those guys had it in spades. I found myself repeatedly happy that the North Vietnamese lacked helicopters and were very short on MIGs. Now, don't get all over me, Rod N5HV started it!!! He shoulda never mentioned that Browning .50 caliber on Ascension. I'd recommend migrating to an old.geezer.war.stories newsgroup but I'd probably never show up there, preferring to take the occasional scolding for getting too windy here on Glowbugs.... sorry. Jim W5AOX From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 12 09:52:02 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id JAA31167 for ; Tue, 12 May 1998 09:52:01 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id GAA01256 for glowbugs-outgoing; Tue, 12 May 1998 06:12:13 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from radiate.indy.net (radiate.indy.net [199.3.65.253]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id GAA01250 for ; Tue, 12 May 1998 06:12:06 -0700 (PDT) Received: from indy2.indy.net (root@indy2.indy.net [199.3.65.7]) by radiate.indy.net (8.8.7/8.8.7) with ESMTP id IAA24614; Tue, 12 May 1998 08:13:07 -0500 (EST) Received: from localhost (rbarmore@localhost [127.0.0.1]) by indy2.indy.net (8.8.7/8.8.7) with SMTP id IAA09385; Tue, 12 May 1998 08:13:04 -0500 (EST) Date: Tue, 12 May 1998 08:13:02 -0500 (EST) From: "Roberta J. Barmore" X-Sender: rbarmore@indy2 To: BA , glowbugs@piobaire.mines.uidaho.edu Subject: GB> 6L6 to Havana?! Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Hi! Woke up early this morning and decided it must be a hint from the Radio Spirits--so I fired up the Jones 6L6 job and the ol' Drake and went hunting. No CQs anywhere I had a crystal close to, so I set up shop on 7045kc/s and called. And called. And called! Tch, the band was a-buzzin'. Must not be getting out. Tried one more call. ...And back comes a signal drifting down the dial: "KB9GKX (etc.) de CO3RP (etc.) _KN_!" I was so got I QRZ'ed him, and back he comes, same downward drift of a handful of cycles per minute during sending and calling me clear as next door. We managed a very short QSO--the sun was rising and about six minutes after his second call, pfft, gone. (And my shaky Morse didn't help any--it may only be 90 miles off Florida but my sigs don't make it off the continent very often!) His drift wasn't too bad, just enough to add some character and give me something to do while copying--typical HB tube VFO-type driftage. So there--one little ol' 6L6 can do okay, if the wind is from the right direction! (And how does a person go about QSLing a Cuban station? I'm guessing IRCs have a better chance of getting through than green stamps). 73, --Bobbi KB9GKX "RJ" rbarmore@indy.net Roberta J. (Bobbi) Barmore FISTS #3388 * G-QRP #10001 * SOWP 5598-TA * ARRL * RSGB * WIA Appreciator Of Vacuum-Tube Ham Gear and Vintage Keys From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 12 10:44:48 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id KAA02989 for ; Tue, 12 May 1998 10:44:47 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA02112 for glowbugs-outgoing; Tue, 12 May 1998 07:10:33 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from uhura.concentric.net (uhura.concentric.net [206.173.119.93]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id HAA02107 for ; Tue, 12 May 1998 07:10:30 -0700 (PDT) Received: from cliff.concentric.net (cliff [206.173.119.90]) by uhura.concentric.net (8.8.8/(98/04/23 5.10)) id KAA08408; Tue, 12 May 1998 10:10:17 -0400 (EDT) [1-800-745-2747 The Concentric Network] Received: from ts002d24.alq-nm.concentric.net (ts002d24.alq-nm.concentric.net [206.173.164.60]) by cliff.concentric.net (8.8.8) id KAA21104; Tue, 12 May 1998 10:10:15 -0400 (EDT) Message-Id: <1.5.4.32.19980512140741.0066a2b0@pop3.concentric.net> X-Sender: jdport@pop3.concentric.net X-Mailer: Windows Eudora Light Version 1.5.4 (32) Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Tue, 12 May 1998 08:07:41 -0600 To: glowbugs@piobaire.mines.uidaho.edu From: DEVCOM Subject: Re: GB> 6L6 to Havana?! Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Bobbi, I daresay "green stamps" will be more than welcome there but IRC's should work too. I've worked maybe a couple of Cuban stations in my ham 'career' but never tried to QSL them. I'm pleased to read your story. Back when I was active in CW I learned to listen for the weak, raspy, drifty signals, as invariably they were DX stations on low budgets. The rich guys who could afford stable hi-power rigs no doubt were up in the SSB bands working pileups of other wealthier folk. I'm glad, according to your story, that there must be still a few "little guys" left out there! And, thus inferring that hopefully someone is left to answer MY drifty weak signal from my reconstituted homegrew station... Jim W5AOX At 08:13 AM 5/12/98 -0500, you wrote: > >Hi! > > Woke up early this morning and decided it must be a hint from the Radio >Spirits--so I fired up the Jones 6L6 job and the ol' Drake and went >hunting. No CQs anywhere I had a crystal close to, so I set up shop on >7045kc/s and called. > And called. > And called! > Tch, the band was a-buzzin'. Must not be getting out. Tried one more >call. > ...And back comes a signal drifting down the dial: "KB9GKX (etc.) de >CO3RP (etc.) _KN_!" I was so got I QRZ'ed him, and back he comes, same >downward drift of a handful of cycles per minute during sending and >calling me clear as next door. From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 12 11:12:29 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id LAA06685 for ; Tue, 12 May 1998 11:12:28 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA02440 for glowbugs-outgoing; Tue, 12 May 1998 07:34:24 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from echo.sound.net (echo.sound.net [205.242.192.21]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id HAA02435 for ; Tue, 12 May 1998 07:34:20 -0700 (PDT) From: wbfim@sound.net Received: (qmail 2833 invoked from network); 12 May 1998 14:15:30 -0000 Received: from tnt0-080006.kc.sound.net (HELO dd) (209.153.80.6) by echo.sound.net with SMTP; 12 May 1998 14:15:30 -0000 Message-Id: <3.0.3.32.19980512091553.00684fb4@sound.net> X-Sender: wbfim@sound.net X-Mailer: QUALCOMM Windows Eudora Light Version 3.0.3 (32) Date: Tue, 12 May 1998 09:15:53 -1200 To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Mackay Receiver Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Yes, the Mackay 128-AZ uses a seperate 6J5 as the regenerator and a 6SJ7 as a detector. I am using this a Non Directional Beacon receiver and other low frequency work. It works nice. Dennis KE0QM From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 12 12:11:48 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id MAA21382 for ; Tue, 12 May 1998 12:11:47 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA03606 for glowbugs-outgoing; Tue, 12 May 1998 08:33:54 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from radiate.indy.net (radiate.indy.net [199.3.65.253]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id IAA03598 for ; Tue, 12 May 1998 08:33:50 -0700 (PDT) Received: from indy2.indy.net (root@indy2.indy.net [199.3.65.7]) by radiate.indy.net (8.8.7/8.8.7) with ESMTP id KAA29162; Tue, 12 May 1998 10:34:47 -0500 (EST) Received: from localhost (rbarmore@localhost [127.0.0.1]) by indy2.indy.net (8.8.7/8.8.7) with SMTP id KAA15463; Tue, 12 May 1998 10:34:44 -0500 (EST) Date: Tue, 12 May 1998 10:34:42 -0500 (EST) From: "Roberta J. Barmore" X-Sender: rbarmore@indy2 To: DEVCOM cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> 6L6 to Havana?! In-Reply-To: <1.5.4.32.19980512140741.0066a2b0@pop3.concentric.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Hi, Jim (and the glowbuggies)! Oh, my--there's *lots* of "little guys" out there; 40 is rife with riff-raff such as us. One of my best QSOs was with Frank, K0IYE in Boulder, CO. He was running a Collins R-388 rcvr and a HB ex-mobile tube transmitter, which sounded good but tended to take a little walk in the first 30 seconds of each transmission. We had a nice chat, and his photograph QSL shows the setup: the (spotless, btw) R-388 sans cabinet on a card-size table, with the little transmitter next to it set at an angle to clear his Hi-Mound bug and some heavy leads running to a couple of big storage batteries on the floor! Now *there's* genuine glowbugging, IMO--each end of the QSO a little clip-lead-y, perhaps, but hey, it all worked, and not a new piece of gear in sight. Many of my QSOs are with folks running low power and/or homebrew gear, which may say something about the character of the signals the 6L6 job puts out (at least one of the crystals is a little chirpy and there's a tad bit of drift on long key-down). Or maybe it's just from working the 7035-7060 window. You bump into a lot of QRPer's at the low end of that and likes of us GB/BA types at the top. (Get much lower than 7035 and those lads'll sling lightning at you--not a problem for the ex-mil/ex-commerical ops among us but wow, I'm shaking teeny little 40 wpm dits outta the headphones for *days* afterwards!) Whatever, homebrew tube QRP does work; it's not a for-sure thing like pushin' a kW but it gets out of the back yard all the same. 73, --Bobbi KB9GKX "RJ" rbarmore@indy.net Roberta J. (Bobbi) Barmore FISTS #3388 * G-QRP #10001 * ARRL * RSGB * WIA Appreciator Of Vacuum-Tube Ham Gear and Vintage Keys From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 12 15:00:30 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id PAA28034 for ; Tue, 12 May 1998 15:00:29 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id LAA06863 for glowbugs-outgoing; Tue, 12 May 1998 11:17:34 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from atl.org ([199.184.215.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id LAA06858 for ; Tue, 12 May 1998 11:17:31 -0700 (PDT) Received: from office (office.atl.org [199.184.215.100]) by atl.org (8.8.0/8.8.0) with SMTP id NAA22809 for ; Tue, 12 May 1998 13:50:46 -0400 (EDT) Message-ID: <35585788.4DE0@atl.org> Date: Tue, 12 May 1998 15:07:04 +0100 From: BOB DUCKWORTH Reply-To: bob@atl.org Organization: Atlanta Technology Library and Museum X-Mailer: Mozilla 3.01Gold (WinNT; I) MIME-Version: 1.0 To: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> 6L6 to Havana?! References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO A couple of weird radios. http://www.atl.org/radios If anyone knows anything about the Manson or about the conversion of Hallicrafters HT37 TX into a transceiver I'd love to hear about it. -bob wb4mnf From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 12 15:23:42 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id PAA01601 for ; Tue, 12 May 1998 15:23:42 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id LAA07255 for glowbugs-outgoing; Tue, 12 May 1998 11:43:40 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from radiate.indy.net (radiate.indy.net [199.3.65.253]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id LAA07249 for ; Tue, 12 May 1998 11:43:35 -0700 (PDT) Received: from indy3.indy.net (root@indy3.indy.net [199.3.65.14]) by radiate.indy.net (8.8.7/8.8.7) with ESMTP id NAA04107; Tue, 12 May 1998 13:44:22 -0500 (EST) Received: from localhost (rbarmore@localhost [127.0.0.1] (may be forged)) by indy3.indy.net (8.8.7/8.8.7) with SMTP id NAA07131; Tue, 12 May 1998 13:44:16 -0500 (EST) Date: Tue, 12 May 1998 13:44:13 -0500 (EST) From: "Roberta J. Barmore" X-Sender: rbarmore@indy3 To: BA , glowbugs@piobaire.mines.uidaho.edu Subject: GB> More 6L6 results Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Hi, Gang! Y'know, 40m still does have its virtues, and so does my habit of sending along a snapshot of the slop--er, shack--and a short note on repro RCA radiogram paper with QSLs. Back on 22 April, I worked a call that at first I took to be a hoax: W2LID. But the callbook came up with a valid name and address, so off went a card, photo, note and SASE (always a help--most folks never have a stamp handy when the card arrives so this saves 'em the trouble). In today's mail, his *cards* arrived; one for our contact and the other'n, well let's see: "WRXN M/V Sea Spray (W2LID)!" With a nice pic of said motor vessel (34' of nifty ship) and of the radio shack therein, complete with a 1942 RCA Liberty Ship receiver and matching transmitter (AR-8510 and ET-8043 respectively, for those who can put a faceplate with the numbers). And a note on a Mackay radiogram form! Beseems '2LID was a genuine Liberty Ship radioman. (And QSLs the marine stns he works from WRXN--who knew?) (Att'n Jeff Herman: it sez here "505-535 kHz A2!" Looks like you're not alone in enjoying the sonorous tonalities of that mode). He goes on to identify all the gear in the photo I sent, with his fond recollections of the stuff when it was new. Now howzabout *that?* (That call still gets me; but based on our QSO and his mail, it's kind of like nicknaming a tall guy "shorty!) ...Anyway, 'tis just more evidence that baiting your hook with a 6L6 does all right. (Want more proof? I worked a retired WW II WAVE radio op the other week. It must be that tube! ) 73, --Bobbi KB9GKX "RJ" rbarmore@indy.net Roberta J. (Bobbi) Barmore FISTS #3388 * G-QRP #10001 * ARRL * RSGB * WIA Appreciator Of Vacuum-Tube Ham Gear and Vintage Keys From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 12 15:41:42 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id PAA16887 for ; Tue, 12 May 1998 15:41:42 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA07721 for glowbugs-outgoing; Tue, 12 May 1998 12:04:15 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from hotmail.com (f53.hotmail.com [207.82.251.40]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id MAA07715 for ; Tue, 12 May 1998 12:04:11 -0700 (PDT) Received: (qmail 2548 invoked by uid 0); 12 May 1998 19:03:19 -0000 Message-ID: <19980512190319.2547.qmail@hotmail.com> Received: from 147.49.3.25 by www.hotmail.com with HTTP; Tue, 12 May 1998 12:03:19 PDT X-Originating-IP: [147.49.3.25] From: "Brad Hernlem" To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> 9003 Characteristics Content-Type: text/plain Date: Tue, 12 May 1998 12:03:19 PDT Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Anyone have the characteristics on the 9003 tube? The data base at http://hereford.ampr.org/cgi-bin/tube gives the following data for the interelectrode capacitances: Cin 3.4 Cout 3 Cgp 0.1 This is also the information listed in my 1968 ARRL handbook. However, that Cgp value sounds very high and I am wondering whether it is incorrect. I am told that the 9003 (7-pin mini) is a repackaged 956 (acorn tube), which has identical specs as the 9003 except that the Cgp is listed as 0.007 pF. Is the 0.1 value a typo? Can anyone confirm this? Thanks, Brad Hernlem ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 12 20:57:24 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id UAA08315 for ; Tue, 12 May 1998 20:57:20 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id RAA11953 for glowbugs-outgoing; Tue, 12 May 1998 17:18:45 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id RAA11945; Tue, 12 May 1998 17:18:34 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Tue, 12 May 1998 17:18:33 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: "Roberta J. Barmore" cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> 6L6 to Havana?! In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > So there--one little ol' 6L6 can do okay, if the wind is from the right > direction! (And how does a person go about QSLing a Cuban station? I'm > guessing IRCs have a better chance of getting through than green stamps). Well, if you can get to Cuba from Indy, your sure as heck ought to be able to get to AHdeeho. I will listen on 7045 anytime you say. Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 12 21:12:21 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id VAA31597 for ; Tue, 12 May 1998 21:12:18 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id RAA12159 for glowbugs-outgoing; Tue, 12 May 1998 17:36:50 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from dfw-ix8.ix.netcom.com (dfw-ix8.ix.netcom.com [206.214.98.8]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id RAA12154 for ; Tue, 12 May 1998 17:36:44 -0700 (PDT) From: mjsilva@ix.netcom.com Received: (from smap@localhost) by dfw-ix8.ix.netcom.com (8.8.4/8.8.4) id TAA17541; Tue, 12 May 1998 19:35:35 -0500 (CDT) Date: Tue, 12 May 1998 19:35:35 -0500 (CDT) Received: from val-ca3-25.ix.netcom.com(206.217.130.89) by dfw-ix8.ix.netcom.com via smap (V1.3) id rma017516; Tue May 12 19:35:22 1998 To: glowbugs@piobaire.mines.uidaho.edu To: alihernlem@hotmail.com Message-Id: <1998512173521341@ix.netcom.com> Subject: Re: GB> 9003 Characteristics X-Mailer: NETCOMplete v3.20, from NETCOM On-Line Communications, Inc. MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On 05/12/98 12:03:19 you wrote: > >Anyone have the characteristics on the 9003 tube? The data base at >http://hereford.ampr.org/cgi-bin/tube gives the following data for the >interelectrode capacitances: > >Cin 3.4 >Cout 3 >Cgp 0.1 > >This is also the information listed in my 1968 ARRL handbook. However, >that Cgp value sounds very high and I am wondering whether it is >incorrect. I am told that the 9003 (7-pin mini) is a repackaged 956 >(acorn tube), which has identical specs as the 9003 except that the Cgp >is listed as 0.007 pF. Is the 0.1 value a typo? Can anyone confirm this? In the Radiation Laboratory volume "Components Handbook" the 9003 Cgp is listed as 0.010 pF, vs. 0.009 pF for the 956. You're correct that the 9003 is a repackaged 956. 73, Mike, KK6GM From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 12 23:28:21 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id XAA15564 for ; Tue, 12 May 1998 23:28:20 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id UAA13442 for glowbugs-outgoing; Tue, 12 May 1998 20:01:51 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from sstar.com (sstar.com [204.27.72.1]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id UAA13437 for ; Tue, 12 May 1998 20:01:46 -0700 (PDT) Received: by emachine.com (wcGATE v4) id 39827W Wed, 13 May 1998 03:59:37 GMT From: ralph.hartwell@emachine.com (Ralph Hartwell) Subject: GB> Radlab books Date: Wed, 13 May 1998 02:58:00 GMT Message-Id: <9805122159373489@emachine.com> Organization: The Energy Machine Information System 504-733-3462 To: glowbugs@piobaire.mines.uidaho.edu Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO M>In the Radiation Laboratory volume "Components Handbook" the 9003 Cgp is Well, I see that I'm not the only one with a set of the MIT Rad Lab books. Great reference source! Ralph W5JGV --- þ QMPro 1.53 þ IF STONE (ROTATION) > 1 THEN MOSS (PROPOGATION) = 0 From glowbugs-owner@piobaire.mines.uidaho.edu Wed May 13 01:43:37 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id BAA24616 for ; Wed, 13 May 1998 01:43:36 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id WAA15295 for glowbugs-outgoing; Tue, 12 May 1998 22:09:21 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mtigwc04.worldnet.att.net (mtigwc04.worldnet.att.net [204.127.131.33]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id WAA15290 for ; Tue, 12 May 1998 22:09:16 -0700 (PDT) Received: from LOCALNAME ([12.65.208.132]) by mtigwc04.worldnet.att.net (post.office MTA v2.0 0613 ) with SMTP id AAC253; Wed, 13 May 1998 05:07:38 +0000 X-Sender: ebjr@postoffice.worldnet.att.net X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: boatanchors@theporch.com, glowbugs@piobaire.mines.uidaho.edu From: Sandy W5TVW Subject: GB> RE: National NC-183D book Date: Wed, 13 May 1998 05:07:38 +0000 Message-ID: <19980513050731.AAC253@LOCALNAME> Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Someone requested a copy of the NC-183D manual. I had a disk crash and lost who needed it. I have copy in hand. Sorry for the All points bulletin! 73 Sandy W5TVW From glowbugs-owner@piobaire.mines.uidaho.edu Wed May 13 04:21:23 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id EAA25114 for ; Wed, 13 May 1998 04:21:22 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id AAA17217 for glowbugs-outgoing; Wed, 13 May 1998 00:52:07 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail1.teleport.com (mail1.teleport.com [192.108.254.26]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id AAA17212 for ; Wed, 13 May 1998 00:52:02 -0700 (PDT) Received: from [204.202.160.179] (pdx02-pm2-16.teleport.com [204.202.160.48]) by mail1.teleport.com (8.8.7/8.7.3) with SMTP id AAA18688 for ; Wed, 13 May 1998 00:51:12 -0700 (PDT) X-Sender: talljazz@mail.teleport.com Message-Id: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Wed, 13 May 1998 00:58:14 +0100 To: glowbugs@piobaire.mines.uidaho.edu From: talljazz@teleport.com (Dan Presley) Subject: GB> Cuba Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On QSL'ing Cuban stations, check with Arnie,CO2KK, who is also the engineer at Radio Havana. His e-mail is: , and may be able to help you with info. Also, they use a lot of 'hollow-state' still down Havana-way. Dan N7CQR From glowbugs-owner@piobaire.mines.uidaho.edu Wed May 13 06:06:14 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id GAA07697 for ; Wed, 13 May 1998 06:06:14 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id CAA18211 for glowbugs-outgoing; Wed, 13 May 1998 02:32:17 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mtigwc04.worldnet.att.net (mtigwc04.worldnet.att.net [204.127.131.33]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id CAA18206 for ; Wed, 13 May 1998 02:32:13 -0700 (PDT) Received: from LOCALNAME ([12.65.208.132]) by mtigwc04.worldnet.att.net (post.office MTA v2.0 0613 ) with SMTP id AAA253; Wed, 13 May 1998 05:07:33 +0000 X-Sender: ebjr@postoffice.worldnet.att.net X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: glowbugs@piobaire.mines.uidaho.edu, heath@listserv.tempe.gov, boatanchors@theporch.com From: Sandy W5TVW Subject: GB> IB-1100 Info Date: Wed, 13 May 1998 05:07:33 +0000 Message-ID: <19980513050731.AAA253@LOCALNAME> Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Who asked me for some info on the IB-100 Frequency Counter? I have it copied now and the message requesting it disappeared! POOF! Whoever it was had one that needed fixing and wanted just the service info and schematics. 73, Sandy W5TVW From glowbugs-owner@piobaire.mines.uidaho.edu Fri May 15 03:15:40 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id DAA05060 for ; Fri, 15 May 1998 03:15:39 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id XAA21811 for glowbugs-outgoing; Thu, 14 May 1998 23:44:46 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from denmark.it.earthlink.net (denmark-c.it.earthlink.net [204.119.177.22]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id XAA21805 for ; Thu, 14 May 1998 23:44:42 -0700 (PDT) Received: from default (pool001-max1.ds13-ca-us.dialup.earthlink.net [209.178.15.151]) by denmark.it.earthlink.net (8.8.7/8.8.5) with SMTP id XAA06987; Thu, 14 May 1998 23:44:06 -0700 (PDT) Message-Id: <3.0.5.32.19980514234320.00aaa2d0@earthlink.net> X-Sender: jshillw6ivw@earthlink.net X-Mailer: QUALCOMM Windows Eudora Pro Version 3.0.5 (32) Date: Thu, 14 May 1998 23:43:20 -0700 To: Ken Gordon From: Jim Hill Subject: Re: GB> Taylor tubes... Cc: glowbugs@piobaire.mines.uidaho.edu In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Ken: I went to Purdue University from 1948 to 1952. Robert Hajek (sp??), was a friend of mine, and the son of the president of Taylor Tubes. He was a ham, but I lost track of him after graduation. I remember him saying Taylor Tubes was in big trouble. He brought down a nice 10 meter AM rig, bristling with Taylor Tubes, and used it at one of the club stations, W9CLY. We didn't use it very long, because it was heard in most of the nearby student's radios. No doubt, the rig and radios would be collectable now. 73's Jim At 05:05 PM 5/14/98 -0700, you wrote: >Does anyone happen to know when this company stopped making tube? snip... > >Ken W7EKB > > > From glowbugs-owner@piobaire.mines.uidaho.edu Fri May 15 11:51:25 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id LAA26253 for ; Fri, 15 May 1998 11:51:25 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA27755 for glowbugs-outgoing; Fri, 15 May 1998 08:19:20 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from hotmail.com (f144.hotmail.com [207.82.251.23]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id IAA27750 for ; Fri, 15 May 1998 08:19:17 -0700 (PDT) Received: (qmail 3175 invoked by uid 0); 15 May 1998 15:18:33 -0000 Message-ID: <19980515151833.3174.qmail@hotmail.com> Received: from 147.49.3.25 by www.hotmail.com with HTTP; Fri, 15 May 1998 08:18:31 PDT X-Originating-IP: [147.49.3.25] From: "Brad Hernlem" To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Low Voltage Characteristics Content-Type: text/plain Date: Fri, 15 May 1998 08:18:31 PDT Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO There have been past discussions on this list about using tubes with low plate supplies. I have been surveying my tubes according to their characteristics under these conditions and thought that I would share some of the results with you in case that you find them useful. The following data may not be representative but it is what I found for single random NOS tubes. Note that I used a string of 5 9V batteries as a variable plate and screen supply. The suppressor grid was tied to the cathode in all cases. The control grid potential was varied by using a 10K pot across a single 9V battery (wiper attached to G1, +ve end of battery attached to cathode). In the case of the 1N5GT tube I noticed that the Ip seemed to surge often and was quite variable under "constant" conditions. I recall reading in the GB archives that someone (I believe it was Bob/NA4G) also noted this type of behavior in filament tubes. However, in all the cases of miniature filament tubes that I have checked (data not shown in this e-mail), none have behaved this way. I only have 2 1N5GT tubes and the other one seems to have an intermittent filament (maybe bad internal pin connection). Are there specific filament tubes that are prone to this behavior? Any opinions about the 1N5GT in general? Also, note that even at 45 V on the 1N5GT the Ip was very weak although it was close to specs (1.2mA) when a 100V source was used. The heated cathode tubes which I have checked generally give appreciable Ip even with only 1 or 2 9V batteries on the plate (or screen). The 1N5GT was dead under those conditions. Brad --------------------------------------------------------------------- Tube: 9003 Remote Cutoff Pentode Base: 7BD Heater: 6.3V 0.15A Pin Connection ---------------- 1 G1 2 K, IS 3 H 4 H 5 P 6 G2 7 K, G3, IS With P and G2 at 5 9V batteries With G1=0V and P at 5 batt G1 Ip G2 Ip -------------- ---------------- -0.03V 3.920mA 5 batt 4.027mA -0.50 3.048 4 batt 3.027 -1.00 2.286 3 batt 2.032 -1.50 1.703 2 batt 1.149 -1.99 1.338 1 batt 0.402 -2.50 1.109 -3.02 0.962 -3.51 0.868 With G1=0V and G2 at 5 batt -4.00 0.790 -5.02 0.658 P Ip -6.00 0.560 ---------------- -7.00 0.479 5 batt 4.052 -8.02 0.409 4 batt 3.962 -8.72 0.368 3 batt 3.827 2 batt 3.523 1 batt 2.956 ------------------------------------------------------------------- Tube: 6AK6 Power Pentode Base: 7BK Heater: 6.3V 0.15A Pin Connection ---------------- 1 G1 2 G3 3 H 4 H 5 P 6 G2 7 K With P and G2 at 5 9V batteries With G1=-1.01V and P=46.9V (5 batt) G1 Ip G2 Ip IG2 -------------- -------------------------- -8.72V 0.026mA 5 batt 5.039mA 0.872mA -7.99 0.050 4 batt 3.567 0.597 -6.99 0.119 3 batt 2.208 0.341 -6.52 0.176 2 batt 1.094 0.127 -6.02 0.262 1 batt 0.275 0.029 -5.51 0.386 -5.00 0.561 -4.49 0.798 With G1=-1.01V and G2 at 5 batt -4.00 1.096 -3.48 1.504 P Ip IG2 -3.03 1.946 ------------------------------- -2.50 2.602 5 batt(46.9V) 5.003mA 0.874mA -2.00 3.330 4 batt(38.0V) 4.956 0.882 -1.50 4.146 3 batt(28.7V) 4.881 0.913 -0.99 5.074 2 batt(19.5V) 4.648 1.048 -0.51 6.032 1 batt(10.2V) 4.391 1.167 -1.01 5.032 --------------------------------------------------------------------- Tube: 1N5GT RF Pentode Base: 5Y Heater: 1.4V 0.05A Pin Connection ---------------- 1 NC 2 F+ 3 P 4 G2 5 NC 6 NC 7 F-, G3 8 NC cap G1 With P and G2 at 5 9V batteries With G1=0V and P at 5 batt G1(vs pin7) Ip G2 Ip ------------------ ---------------- -0.0V 0.271mA 5 batt 0.261mA -0.5 0.115 4 batt 0.138 -1.0 0.033 3 batt 0.054 -1.5 0.004 2 batt 0.012 -0.75 0.062 1 batt 0.000 -0.25 0.188 With G1=0V and G2 at 5 batt P Ip ---------------- 5 batt 0.264mA 4 batt 0.258 3 batt 0.254 2 batt 0.235 1 batt 0.183 with 100V on G2 and P and 0V on G1, Ip was 1.44mA ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com From glowbugs-owner@piobaire.mines.uidaho.edu Fri May 15 12:49:44 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id MAA27905 for ; Fri, 15 May 1998 12:49:43 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA29122 for glowbugs-outgoing; Fri, 15 May 1998 09:22:34 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA29117 for ; Fri, 15 May 1998 09:22:29 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.7/8.8.7) id MAA13413; Fri, 15 May 1998 12:18:35 -0400 (EDT) From: "Robert D. Keys" Message-Id: <199805151618.MAA13413@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> Low Voltage Characteristics In-Reply-To: <19980515151833.3174.qmail@hotmail.com> from Brad Hernlem at "May 15, 98 08:18:31 am" To: alihernlem@hotmail.com (Brad Hernlem) Date: Fri, 15 May 1998 12:18:35 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL32 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO NICE Work! > In the case of the 1N5GT tube I noticed that the Ip seemed to surge > often and was quite variable under "constant" conditions. I recall > reading in the GB archives that someone (I believe it was Bob/NA4G) also > noted this type of behavior in filament tubes. However, in all the cases > of miniature filament tubes that I have checked (data not shown in this > e-mail), none have behaved this way. I only have 2 1N5GT tubes and the > other one seems to have an intermittent filament (maybe bad internal pin > connection). Are there specific filament tubes that are prone to this > behavior? Any opinions about the 1N5GT in general? Newer filment design tends to be better than the older tube designs. Also, indirectly heated cathodes usually have a large reserve of emission, more than is necessary for detector service. When the filament spurts a lot, it probably could use reconditioning. You might try running it at standard voltage + 5-10 percent for an hour or so and compare it before and after. Don't go over 10%, or you can blow the filament. Take it a few minutes at a time, and then check it in your test setup. If that perks it up after some time, a few minutes to an hour, then it just needed some rejuvenation. If it did not make any difference, it is probably weak or at the end of its life. On the intermittent tube, set it up on the test jig and give it full normal voltage. Then tap on it with a pencil to see if you can shake loose the place where it may be touching something else. I once recovered a 10Y that way, although it only works vertically, now, and will short out if you look at it crosseyed. If the filament on the 1N5 is bad, the intermittent will probably break. If it is shorting, then it will probably shake loose. You can check to see if it is shorting, by heating the filament and looking for any off colored spots. Where it gets off colored or less bright, it may be touching something internally. On something like the 1N5 and other low voltage filament tubes, even a very slight change in filament voltage can make a rather significant difference in emission. In something like low voltage regen detector service, you play a game with getting enough emission stably to give good regeneration response. Normally, in detector service, very little plate current is actually drawn, due to the rather high grid bias. That is why something like an 833 even can be used as a detector. One of our early brethren did that and it worked fairly well. That is why the filament current can be backed off well below spec, and still work fine. In detector service, only sufficient current to pass the weak electron stream is required. In audio or other service, the requirements are more stringent. > Also, note that even at 45 V on the 1N5GT the Ip was very weak although > it was close to specs (1.2mA) when a 100V source was used. The heated > cathode tubes which I have checked generally give appreciable Ip even > with only 1 or 2 9V batteries on the plate (or screen). The 1N5GT was > dead under those conditions. You might try boosting the filament voltage a few percent and see if that does anything. If it does, the tube is probably approaching the end of its useful life, although it may be good as a detector still. I would expect that a minimum of 18 or so volts would be required to get any reasonable detector service out of the 1N5. A 6L6, on the other hand can walk along at 12V plate and break your ear drums in a detector and one step. A pair of 6V6's also makes a good detector and one step at low voltage (12-24v plate). > Brad Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Fri May 15 13:35:21 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id NAA02709 for ; Fri, 15 May 1998 13:35:20 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA00571 for glowbugs-outgoing; Fri, 15 May 1998 10:04:45 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from hotmail.com (f117.hotmail.com [207.82.251.45]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id KAA00566 for ; Fri, 15 May 1998 10:04:40 -0700 (PDT) Received: (qmail 3251 invoked by uid 0); 15 May 1998 17:03:52 -0000 Message-ID: <19980515170352.3250.qmail@hotmail.com> Received: from 147.49.3.25 by www.hotmail.com with HTTP; Fri, 15 May 1998 10:03:52 PDT X-Originating-IP: [147.49.3.25] From: "Brad Hernlem" To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Low B+ Characteristics(cont.): 1L4 Content-Type: text/plain Date: Fri, 15 May 1998 10:03:52 PDT Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Here are some more low voltage characteristics. These are for several 1L4 tubes from different manufacturers. Again, a string of 5 9V batteries were used as a variable plate and screen supply. Control grid voltage was obtained from a 10K pot across another 9V battery. Filament supply was a 1.5V "D" cell. Brad ------------------------------------------------------------ Tube: 1L4 Sharp Cutoff Pentode Base: 6AR Filament: 1.4V, 0.05A Pin Connection ---------------- 1 F-, G3 2 P 3 G2 4 NC 5 F-, G3 6 G1 7 F+ With P and G2 at 5 9V batt and G3 at 0V Tube 1 2 3 4 5 6 CMC RCA CMC CMC Tungsol Tungsol ----------------------------------------------------- G1 Ip ------------------------------------------------------------- -0.0V 1.830mA 1.756 1.621 1.595 1.371 1.691 -0.5V 1.493 1.445 1.293 1.291 1.069 1.352 -1.0V 1.150 1.118 0.983 0.984 0.762 1.027 -1.5V 0.833 0.820 0.709 0.698 0.513 0.722 -2.0V 0.555 0.554 0.455 0.460 0.306 0.477 -2.5V 0.321 0.337 0.253 0.264 0.156 0.280 -3.0V 0.129 0.166 0.112 0.126 0.060 0.132 -3.5V 0.043 0.064 0.042 0.046 0.016 0.049 -4.0V 0.013 0.020 0.014 0.013 0.003 0.010 With P at 5 batt and G1 at 0V Tube 1 2 5 6 ----------------------------- G2 Ip ------------------------------------- 5 batt 1.81mA 1.54 1.60 1.79 4 batt 1.29 1.03 1.08 1.26 3 batt 0.81 0.59 0.64 0.80 2 batt 0.40 0.24 0.26 0.39 1 batt 0.12 0.04 0.04 0.11 With G2 at 5 batt amd G1 at 0V Tube 1 2 5 6 ----------------------------- P Ip ------------------------------------- 5 batt 1.81mA 1.53 1.60 1.79 4 batt 1.79 1.52 1.59 1.76 3 batt 1.76 1.49 1.56 1.72 2 batt 1.67 1.42 1.49 1.61 1 batt 1.44 1.22 1.30 1.38 ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com From glowbugs-owner@piobaire.mines.uidaho.edu Fri May 15 13:36:51 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id NAA04048 for ; Fri, 15 May 1998 13:36:50 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA00680 for glowbugs-outgoing; Fri, 15 May 1998 10:11:12 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id KAA00675 for ; Fri, 15 May 1998 10:11:07 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Fri, 15 May 1998 10:11:06 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Oven elements... Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Does anyone know if the characteristics of nichrome wire, as found in replacement oven elements, would be suitable for use as high-wattage grid leaks? It seems to me that they are rather low resistance though. What I need is about 200 Watts worth of about 50 k Ohms, but I have to be able to adjust the resistance to balance the tubes (Push Pull). Ideas? Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Fri May 15 13:44:50 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id NAA15135 for ; Fri, 15 May 1998 13:44:49 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA00890 for glowbugs-outgoing; Fri, 15 May 1998 10:18:33 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from hotmail.com (f108.hotmail.com [207.82.250.227]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id KAA00884 for ; Fri, 15 May 1998 10:18:29 -0700 (PDT) Received: (qmail 26932 invoked by uid 0); 15 May 1998 17:17:39 -0000 Message-ID: <19980515171739.26931.qmail@hotmail.com> Received: from 147.49.3.25 by www.hotmail.com with HTTP; Fri, 15 May 1998 10:17:39 PDT X-Originating-IP: [147.49.3.25] From: "Brad Hernlem" To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Low B+ Characteristics(cont.): 3A4 Content-Type: text/plain Date: Fri, 15 May 1998 10:17:39 PDT Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Here are characteristics which I measured for an RCA 3A4 tube. The setup was as before. Filament supply was via a single "D" cell. Brad ---------------------------------------------------------------- Tube: 3A4 Power Pentode Base: 7BB Filament: 1.4V, 0.2A or 2.8V, 0.1A Pin Connection ---------------- 1 F 2 P 3 G2 4 G1 5 F(center tap), G3 6 P 7 F With P and G2 at 5 9V batt G1 Ip ------------ -0.0V 11.89mA -0.5 10.97 -1.0 10.01 -1.5 9.14 -2.0 8.17 -2.5 7.25 -3.0 6.47 -3.5 5.55 -4.0 4.80 -4.5 4.12 -5.0 3.40 -8.0 0.83 With P at 5 batt and G1 at 0V G2 Ip --------------- 5 batt 11.91mA 4 batt 8.62 3 batt 5.53 2 batt 2.84 1 batt 0.73 With G2 at 5 batt amd G1 at 0V P Ip --------------- 5 batt 11.77mA 4 batt 11.48 3 batt 11.03 2 batt 9.32 1 batt 2.88 ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com From glowbugs-owner@piobaire.mines.uidaho.edu Fri May 15 14:06:42 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id OAA26564 for ; Fri, 15 May 1998 14:06:41 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA01432 for glowbugs-outgoing; Fri, 15 May 1998 10:40:45 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id KAA01427; Fri, 15 May 1998 10:40:24 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Fri, 15 May 1998 10:40:21 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: Brad Hernlem cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Low B+ Characteristics(cont.): 3A4 In-Reply-To: <19980515171739.26931.qmail@hotmail.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO This is neat info! Thanks Brad. Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Fri May 15 14:07:08 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id OAA26061 for ; Fri, 15 May 1998 14:07:07 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA01218 for glowbugs-outgoing; Fri, 15 May 1998 10:30:59 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from hotmail.com (f141.hotmail.com [207.82.251.20]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id KAA01213 for ; Fri, 15 May 1998 10:30:54 -0700 (PDT) Received: (qmail 4064 invoked by uid 0); 15 May 1998 17:30:04 -0000 Message-ID: <19980515173004.4063.qmail@hotmail.com> Received: from 147.49.3.25 by www.hotmail.com with HTTP; Fri, 15 May 1998 10:30:04 PDT X-Originating-IP: [147.49.3.25] From: "Brad Hernlem" To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Low B+ Characteristics(cont.): JAN5719 Content-Type: text/plain Date: Fri, 15 May 1998 10:30:04 PDT Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Here are characteristics for the JAN5719 subminiature triode tube. This tube is compliments of Gerald Caouette (ve6nap@oanet.com) who, I believe has more of them. Brad ------------------------------------------------------------ Tube: JAN5719 Triode (subminiature) Filament: 6.3V, 0.15A Pin Connection --------------- 1 Grid 2,4,7 NC 3,6 H 5 K 8 P With P at 46.2V (5 9V batt) Grid Ip --------------- -0.000V 1.802mA -0.104 1.543 -0.249 1.169 -0.405 0.800 -0.803 0.213 -1.018 0.081 -1.439 0.008 With Grid at 0V P Ip --------------- 46.2V 1.809mA 37.0 1.475 27.6 1.144 18.2 0.823 8.8 0.505 ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com From glowbugs-owner@piobaire.mines.uidaho.edu Fri May 15 14:34:42 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id OAA16674 for ; Fri, 15 May 1998 14:34:41 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id LAA02063 for glowbugs-outgoing; Fri, 15 May 1998 11:13:58 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from hotmail.com (f43.hotmail.com [207.82.250.54]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id LAA02057 for ; Fri, 15 May 1998 11:13:53 -0700 (PDT) Received: (qmail 16745 invoked by uid 0); 15 May 1998 18:13:02 -0000 Message-ID: <19980515181302.16744.qmail@hotmail.com> Received: from 147.49.3.25 by www.hotmail.com with HTTP; Fri, 15 May 1998 11:13:01 PDT X-Originating-IP: [147.49.3.25] From: "Brad Hernlem" To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Low B+ Characteristics(cont.): 5654 and 6186W Content-Type: text/plain Date: Fri, 15 May 1998 11:13:01 PDT Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO This is the last of my data for low voltage characteristics measured to date. The following data is for a couple used 5654 tubes and three NOS JAN 6186W tubes. The data was collected as described previously. Brad --------------------------------------------------------------------- Tube: 5654 (6AK5) Sharp Cutoff Pentode Filament: 6.3V, 0.175A Pin Connection --------------- 1 G1 2 K, IS 3 H 4 H 5 P 6 G2 7 K, G3, IS With P and G2 at 5 9V batt G1 Ip (tube 1) Ip (tube 2) ------------------------------ -0.0V 4.90mA 5.70 -0.5 2.93 3.80 -1.0 1.34 2.03 -1.5 0.44 0.82 -2.0 0.09 0.25 With P at 5 batt and G1 at 0V G2 Ip (tube 1) Ip (tube 2) ------------------------------ 5 batt 5.14mA 5.83 4 batt 3.87 4.66 3 batt 2.66 3.50 2 batt 1.56 2.39 1 batt 0.63 1.37 ----------------------------------------------------------------- Tube: JAN6186W Sharp Cutoff Pentode Filament: 6.3V, 0.3A Pin Connection ---------------- 1 G1 2 K, IS 3 H 4 H 5 P 6 G2 7 K, G3, IS With P and G2 at 5 9V batt G1 Ip (tube 1) Ip (tube 2) Ip (tube 3) -------------------------------------------- -0.0V 3.23mA 4.65 3.12 -0.5 1.90 2.72 1.62 -1.0 0.71 1.22 0.52 -1.5 0.20 0.43 0.09 -2.0 0.03 0.12 0.01 With P at 5 batt and G1 at 0V G2 Ip (tube 1) Ip (tube 2) ------------------------------ 5 batt 3.30mA 4.64 4 batt 2.51 3.56 3 batt 1.75 2.49 2 batt 1.08 1.53 1 batt 0.50 0.69 ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com From glowbugs-owner@piobaire.mines.uidaho.edu Fri May 15 15:14:38 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id PAA09475 for ; Fri, 15 May 1998 15:14:37 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id LAA02767 for glowbugs-outgoing; Fri, 15 May 1998 11:46:22 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id LAA02762 for ; Fri, 15 May 1998 11:46:17 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.7/8.8.7) id OAA13662; Fri, 15 May 1998 14:42:14 -0400 (EDT) From: "Robert D. Keys" Message-Id: <199805151842.OAA13662@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> Low B+ Characteristics(cont.): Do a 6146, 6L6, 6V6 comparison In-Reply-To: <19980515181302.16744.qmail@hotmail.com> from Brad Hernlem at "May 15, 98 11:13:01 am" To: alihernlem@hotmail.com (Brad Hernlem) Date: Fri, 15 May 1998 14:42:13 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL32 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > This is the last of my data for low voltage characteristics measured to > date. The following data is for a couple used 5654 tubes and three NOS > JAN 6186W tubes. The data was collected as described previously. > > Brad Great stuff, Brad... please do a 6146, 6L6, 6V6, and maybe an 807 for some fun comparisons. Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Fri May 15 15:49:37 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id PAA10850 for ; Fri, 15 May 1998 15:49:36 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA03721 for glowbugs-outgoing; Fri, 15 May 1998 12:24:26 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id MAA03716 for ; Fri, 15 May 1998 12:24:22 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Fri, 15 May 1998 12:24:21 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Tube 8068... Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Anyone know what this thing is ? It is an octal-based tube and looks like a pretty heavy duty sweep tube. I was just given about 25 of them NIB. Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Fri May 15 15:51:47 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id PAA02850 for ; Fri, 15 May 1998 15:51:46 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA03766 for glowbugs-outgoing; Fri, 15 May 1998 12:25:21 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from hotmail.com (f23.hotmail.com [207.82.250.34]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id MAA03760 for ; Fri, 15 May 1998 12:25:17 -0700 (PDT) Received: (qmail 11669 invoked by uid 0); 15 May 1998 19:24:24 -0000 Message-ID: <19980515192424.11668.qmail@hotmail.com> Received: from 147.49.3.25 by www.hotmail.com with HTTP; Fri, 15 May 1998 12:24:23 PDT X-Originating-IP: [147.49.3.25] From: "Brad Hernlem" To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Re: GB- Low Voltage Characteristics Content-Type: text/plain Date: Fri, 15 May 1998 12:24:23 PDT Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO >Newer filment design tends to be better than the older tube designs. > >Also, indirectly heated cathodes usually have a large reserve of emission, >more than is necessary for detector service. > >When the filament spurts a lot, it probably could use reconditioning. >You might try running it at standard voltage + 5-10 percent for an hour >or so and compare it before and after. Don't go over 10%, or you can >blow the filament. Take it a few minutes at a time, and then check >it in your test setup. If that perks it up after some time, a few minutes >to an hour, then it just needed some rejuvenation. If it did not make >any difference, it is probably weak or at the end of its life. I was under the impression that this procedure only works for thoriated tungsten filaments and I am assuming that the 1N5GT has an oxide coated filament. Is this not correct? >On the intermittent tube, set it up on the test jig and give it >full normal voltage. Then tap on it with a pencil to see if you can >shake loose the place where it may be touching something else. >I once recovered a 10Y that way, although it only works vertically, >now, and will short out if you look at it crosseyed. If the filament >on the 1N5 is bad, the intermittent will probably break. If it is >shorting, then it will probably shake loose. You can check to see >if it is shorting, by heating the filament and looking for any off >colored spots. Where it gets off colored or less bright, it may >be touching something internally. It is very difficult to see the filament in these tubes. It is dim, of course, but there is only a small hole in the shield through which to see. From what I can tell, the intermittent seems to be related to the pins more than tapping or shaking. It isn't that the pins to socket contacts are bad (I checked that). Whatever the cause, the tube isn't worth bothering with (it only cost me 20 cents). >On something like the 1N5 and other low voltage filament tubes, even a >very slight change in filament voltage can make a rather significant >difference in emission. In something like low voltage regen detector >service, you play a game with getting enough emission stably to give >good regeneration response. Normally, in detector service, very >little plate current is actually drawn, due to the rather high grid >bias. That is why something like an 833 even can be used as a detector. >One of our early brethren did that and it worked fairly well. That is >why the filament current can be backed off well below spec, and still work >fine. In detector service, only sufficient current to pass the weak electron >stream is required. In audio or other service, the requirements are >more stringent. > >> Also, note that even at 45 V on the 1N5GT the Ip was very weak although >> it was close to specs (1.2mA) when a 100V source was used. The heated >> cathode tubes which I have checked generally give appreciable Ip even >> with only 1 or 2 9V batteries on the plate (or screen). The 1N5GT was >> dead under those conditions. > >You might try boosting the filament voltage a few percent and see if >that does anything. If it does, the tube is probably approaching the >end of its useful life, although it may be good as a detector still. > >I would expect that a minimum of 18 or so volts would be required >to get any reasonable detector service out of the 1N5. A 6L6, on >the other hand can walk along at 12V plate and break your ear drums >in a detector and one step. A pair of 6V6's also makes a good >detector and one step at low voltage (12-24v plate). This 1N5GT is allegedly a NOS tube although it is in pretty ugly shape (metal band cracked and deteriorating). I realize that the filament tubes have much less emission than the indirectly heated tubes (1.4V*0.05A is much less than 6.3V*0.15A, for example, so you would expect this to be true). My question (or suspicion) is whether this decreased emission causes the threshold of plate supply for serviceable use to increase (not just that for characteristic operation the working Ip is frequently lower than with indirectly heated tubes). I can imagine that the decreased electron density around the cathode makes it necessary to use more pull from the screen and plate to get those guys past the control grid. There must be some electron density term in the equation somewhere. Brad >> Brad > >Bob/NA4G > > ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com From glowbugs-owner@piobaire.mines.uidaho.edu Fri May 15 15:51:57 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id PAA19413 for ; Fri, 15 May 1998 15:51:57 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA03983 for glowbugs-outgoing; Fri, 15 May 1998 12:32:19 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from hotmail.com (f178.hotmail.com [207.82.251.64]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id MAA03977 for ; Fri, 15 May 1998 12:32:15 -0700 (PDT) Received: (qmail 19637 invoked by uid 0); 15 May 1998 19:31:20 -0000 Message-ID: <19980515193120.19636.qmail@hotmail.com> Received: from 147.49.3.25 by www.hotmail.com with HTTP; Fri, 15 May 1998 12:31:20 PDT X-Originating-IP: [147.49.3.25] From: "Brad Hernlem" To: rdkeys@seedlab1.cropsci.ncsu.edu Cc: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Re: GB- Low B+ Characteristics(cont.): Do a 6146, 6L6, 6V6 comparison Content-Type: text/plain Date: Fri, 15 May 1998 12:31:20 PDT Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO >> This is the last of my data for low voltage characteristics measured to >> date. The following data is for a couple used 5654 tubes and three NOS >> JAN 6186W tubes. The data was collected as described previously. >> >> Brad > >Great stuff, Brad... please do a 6146, 6L6, 6V6, and maybe an 807 >for some fun comparisons. > >Bob/NA4G > I don't have any of those tubes. My tube stock is pretty limited and I am probably one of the few non-Hams on this list (so no need for transmitting tubes). Mostly I have miniature tubes and a few loctals and octals. Brad ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com From glowbugs-owner@piobaire.mines.uidaho.edu Fri May 15 17:56:39 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id RAA08543 for ; Fri, 15 May 1998 17:56:37 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id OAA06146 for glowbugs-outgoing; Fri, 15 May 1998 14:33:53 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id OAA06130; Fri, 15 May 1998 14:33:40 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Fri, 15 May 1998 14:33:40 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: "Robert D. Keys" cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Tube 8068... In-Reply-To: <199805152001.QAA13850@seedlab1.cropsci.ncsu.edu> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > > Anyone know what this thing is ? It is an octal-based tube and looks like > > a pretty heavy duty sweep tube. I was just given about 25 of them NIB. > > > > Ken W7EKB > > I sense a tubie project in the works.....(:+}}..... > Yup. Probably something Push-Pull-Parallel (Gee, I love Push-Pull). But I gotta finish my Mondo Hartley first. Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Fri May 15 17:58:15 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id RAA27123 for ; Fri, 15 May 1998 17:58:14 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id OAA06174 for glowbugs-outgoing; Fri, 15 May 1998 14:34:37 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id OAA06166; Fri, 15 May 1998 14:34:27 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Fri, 15 May 1998 14:34:26 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: "Robert D. Keys" cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Re: 8068 tube In-Reply-To: <199805152002.QAA13875@seedlab1.cropsci.ncsu.edu> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > > This site mentions the 8068 tube (series-pass control): > > > > http://www.kepcopower.com/newsvac.htm > > Ohhh, a low voltage Hartley oscillator tube! > > Bob/NA4G Oooooooo...lovely! Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Fri May 15 17:58:27 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id RAA01506 for ; Fri, 15 May 1998 17:58:26 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id OAA06072 for glowbugs-outgoing; Fri, 15 May 1998 14:31:38 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id OAA06067; Fri, 15 May 1998 14:31:32 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Fri, 15 May 1998 14:31:30 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: Brad Hernlem cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Re: GB- Low B+ Characteristics(cont.): Do a 6146, 6L6, 6V6 comparison In-Reply-To: <19980515193120.19636.qmail@hotmail.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > I don't have any of those tubes. My tube stock is pretty limited and I > am probably one of the few non-Hams on this list (so no need for > transmitting tubes). Mostly I have miniature tubes and a few loctals and > octals. I was just given a BUNCH of 807s and 2 6146s. I will happily donate one of each to "the Cause". What is your address? Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Fri May 15 18:01:41 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id SAA31700 for ; Fri, 15 May 1998 18:01:40 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id OAA06315 for glowbugs-outgoing; Fri, 15 May 1998 14:38:49 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id OAA06310 for ; Fri, 15 May 1998 14:38:45 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Fri, 15 May 1998 14:38:44 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Tube 8068... In-Reply-To: <19980515203207.AAA12092@LOCALNAME> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Sandy W5TVW wrote: > It's some kind of high voltage regulator tube. Plate dis is 35 watts. > Max voltage 3500 v on plate. Another book I have says 600 volts > at 35 ma class "A" amplifier service. Well, I have exactly 24 of them, NIB. They have ALL been tested by someone who very thoughtfully wrote their transconductance on each box. The lowest one says 10,250 micromhos and they go up from there. It seems to me that anything with that high a gM would make a pretty good oscillator, or a whale of a good low-noise amp. Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Fri May 15 23:17:52 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id XAA12336 for ; Fri, 15 May 1998 23:17:51 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id TAA08886 for glowbugs-outgoing; Fri, 15 May 1998 19:46:43 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from radiate.indy.net (radiate.indy.net [199.3.65.253]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id TAA08881 for ; Fri, 15 May 1998 19:46:40 -0700 (PDT) Received: from indy2.indy.net (root@indy2.indy.net [199.3.65.7]) by radiate.indy.net (8.8.7/8.8.7) with ESMTP id VAA14577; Fri, 15 May 1998 21:47:07 -0500 (EST) Received: from localhost (rbarmore@localhost [127.0.0.1]) by indy2.indy.net (8.8.7/8.8.7) with SMTP id VAA03622; Fri, 15 May 1998 21:47:05 -0500 (EST) Date: Fri, 15 May 1998 21:47:03 -0500 (EST) From: "Roberta J. Barmore" X-Sender: rbarmore@indy2 To: BA , glowbugs@piobaire.mines.uidaho.edu Subject: GB> Dayton on a Friday! Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Well, gang, it turns out Dayton's pretty good on Friday! I met up with a few folks from the BA & GB lists, and I think at least walked near others (sort of left my print out of who's where in the car after the first trip, oops, and it was too looong a walk to go back for). Those who have met me will aver A) I don't look like I write and B) I don't sound like I look. (Everyone else will be confused, but 'strewth). Met Rev. George Dobbs (of G-QRP and etc.) and a few other famous QRPers, also Nancy Kott of the FISTS Club and Mitch of Vibroplex...*and* my Corporate-level boss, who wanted to know why I wasn't at work! (Traded an off day)--yes, for the very first time, I went inside at Dayton! Saw some nice stuff, including a middle-sized Johnson transmitter I should'a bought (that long walk to the car kept me from it). Picked up a lot of "Radio" magazines I didn't have, some QSTs and some new books, plus a coupla little "cheese slicers" (variable condensers [oh, okay, capacitors. But it sticks in my craw!]), some good ol' domed "Ohmite" knobs and a nifty Eastern-European straight key, fully enclosed and smooth as can be. Find Of The Day (not mine), Professor Tom Perera swapped for a metal-based, nearly new-looking Martin "Autoplex," oldest ancestor of the Vibroplex. (Yes, this is the very same W1TP who found a Vertical Vibroplex at *last* year's event--it's critical mass, that's what it is; when you have as many keys as he does, it just draws out the rare ones). (Gosh he has some interesting keys!) Saw a lot of things, did not think most prices were too out of line. One fellow was lugging around a rack-mount National late-40s set (with matching rack-mount speaker!) *and* an SP-600-VLF. He'll have great fun if his operating desk holds up, I think! As ever, I had to convince a couple of guys that I really did know something about radio--remembered to bring a few business cards this year, which sorta messed with their minds. (Chief Operator/Sr. RF Technician, heh heh heh...*and* I can cook. *And* I'm already married, you pooooor sap..... Am I too mean?) All in all, a fine time, well worth the sunburn and calf cramps. Now I'm for a long soak--I *still* have to work tonight! 73, --Bobbi KB9GKX "RJ" rbarmore@indy.net Roberta J. (Bobbi) Barmore FISTS #3388 * G-QRP #10001 * ARRL * RSGB * WIA Appreciator Of Vacuum-Tube Ham Gear and Vintage Keys From glowbugs-owner@piobaire.mines.uidaho.edu Sat May 16 10:55:56 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id KAA28584 for ; Sat, 16 May 1998 10:55:55 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA16814 for glowbugs-outgoing; Sat, 16 May 1998 07:26:26 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from x7.boston.juno.com (x7.boston.juno.com [205.231.100.24]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id HAA16809 for ; Sat, 16 May 1998 07:26:24 -0700 (PDT) Received: (from k7sz@juno.com) by x7.boston.juno.com (queuemail) id KiN17052; Sat, 16 May 1998 10:23:45 EDT To: rbarmore@indy.net Cc: boatanchors@sco.ThePorch.com, glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Dayton on a Friday! Message-ID: <19980517.143137.6807.3.k7sz@juno.com> References: X-Mailer: Juno 1.38 X-Juno-Line-Breaks: 0,2-12 From: k7sz@juno.com (Rick Arland) Date: Sat, 16 May 1998 10:23:45 EDT Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On Fri, 15 May 1998 21:47:03 -0500 (EST) "Roberta J. Barmore" writes: > > Met Rev. George Dobbs (of G-QRP and etc.) and a few other famous >QRPers, I didn't know you were a QRPer, Bobbi. One of these days I'll relate the story of my 37th birthday hosted by the Rt. Rev. Geo Dobbs (G3RJV) and the G-QRP- Club....It all boiled down to lots of Haggis and Single Malt Highland Whiskey (my liver is just now starting to recover). 73 rich K7SSZ _____________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail from Juno at http://www.juno.com Or call Juno at (800) 654-JUNO [654-5866] From glowbugs-owner@piobaire.mines.uidaho.edu Sat May 16 16:20:39 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id QAA15829 for ; Sat, 16 May 1998 16:20:38 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA20258 for glowbugs-outgoing; Sat, 16 May 1998 12:54:54 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.hits.net (mail.hits.net [206.127.244.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id MAA20253 for ; Sat, 16 May 1998 12:54:51 -0700 (PDT) Received: from 206.127.244.76 (excalibur10.hits.net [206.127.244.76]) by mail.hits.net (8.8.8/8.8.5) with SMTP id JAA05568; Sat, 16 May 1998 09:49:46 -1000 (HST) Message-ID: <355DEF64.2D62@hits.net> Date: Sat, 16 May 1998 09:56:20 -1000 From: Peter Demmer Reply-To: ampruss@hits.net Organization: AMPRUSS Co. X-Mailer: Mozilla 3.01 (Macintosh; I; 68K) MIME-Version: 1.0 To: "Robert D. Keys" CC: Brad Hernlem , glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Re: 8068 tube References: <199805152002.QAA13875@seedlab1.cropsci.ncsu.edu> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Robert D. Keys wrote: > > > This site mentions the 8068 tube (series-pass control): > > > > http://www.kepcopower.com/newsvac.htm > > Ohhh, a low voltage Hartley oscillator tube! > > Bob/NA4 Peter wrote; GE tube manuel,11th edition; Beam Pentode base conx, 8LC Fil 6.3 @0.9A Maxiplate (design)=3500 (yes,yes,yes). Service; series regulator plate-e 600 @35 mil screen-e 125 neg CG-e 7.5 screen current = 1mA Rp ohms 54,5000 Gm umohs 5200 u factor and power out watts notlisted "only caution " maxium cathode current = 100mA And thats all I have. Aloha, Peter KH6CTQ From glowbugs-owner@piobaire.mines.uidaho.edu Sat May 16 21:24:04 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id VAA20983 for ; Sat, 16 May 1998 21:24:03 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id RAA22880 for glowbugs-outgoing; Sat, 16 May 1998 17:55:47 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from europe.std.com (europe.std.com [199.172.62.20]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id RAA22875 for ; Sat, 16 May 1998 17:55:44 -0700 (PDT) Received: from world.std.com by europe.std.com (8.7.6/BZS-8-1.0) id UAA12941; Sat, 16 May 1998 20:55:09 -0400 (EDT) Received: from unknown (world.std.com) by world.std.com (TheWorld/Spike-2.0) id AA17004; Sat, 16 May 1998 20:54:28 -0400 From: wallace@world.std.com (Andy Wallace) To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Shurite 1-100mA DC meter available Date: Sun, 17 May 1998 00:54:23 GMT Organization: Thermionic Liberation Front Reply-To: wallace@world.std.com Message-Id: <356723ac.32781601@world.std.com> X-Mailer: Forte Agent 1.0/16.390 Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Hi, Folks! I have in my possession a Shurite square 0-100mA DC meter. A little bigger than 2.5" square. Looks like a round 2 - 1/8" hole to mount. Two mounting holes about 2 - 3/8" apart. Metal case, inexpensive, undamped BOING!!! type meter perfect for your AT-1 clone. I sold my AT-1 so I don't know if it fits that, but I don't think so. :-) Be glad to trade for a useful FT-243 rock in any ham band, an FT-243 from 5000-5440 kc (C.E. 20A exciter), or Drake range crystal... Please reply direct if interested. I think it works -- meter moves if I briefly touch my VOM probes to it... --Andy wallace@world.std.com From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 17 04:07:26 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id EAA01714 for ; Sun, 17 May 1998 04:07:25 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id XAA26659 for glowbugs-outgoing; Sat, 16 May 1998 23:55:38 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from uhura.concentric.net (uhura.concentric.net [206.173.119.93]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id XAA26654 for ; Sat, 16 May 1998 23:55:35 -0700 (PDT) Received: from marconi.concentric.net (marconi [206.173.119.71]) by uhura.concentric.net (8.8.8/(98/04/23 5.10)) id CAA15826; Sun, 17 May 1998 02:54:49 -0400 (EDT) [1-800-745-2747 The Concentric Network] Received: from ts003d20.alq-nm.concentric.net (ts003d20.alq-nm.concentric.net [206.173.164.80]) by marconi.concentric.net (8.8.8) id CAA08551; Sun, 17 May 1998 02:54:44 -0400 (EDT) Message-Id: <1.5.4.32.19980517065514.006af010@pop3.concentric.net> X-Sender: jdport@pop3.concentric.net X-Mailer: Windows Eudora Light Version 1.5.4 (32) Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Sun, 17 May 1998 00:55:14 -0600 To: glowbugs@piobaire.mines.uidaho.edu From: DEVCOM Subject: Re: GB> GunBusters? [yesteryear] Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO At 08:11 PM 5/15/98 PDT, you wrote: >Have to totally disagree with your opinion on the M-16. >While I don't like it either for completely different >reasons the stuff about the 3 round selective fire is crap. Well, your opinion would set well with the "gravel belly" sharpshooter concept condemned by the book and supposedly the main concept of the military since the Revolutionary War. I considered the M14 a long and heavy joke. In Nam the guys who had the knowledge and good sense imported M1 carbines and used them effectively. How the Army decided to lose the M1 and come out with a heavier, clunkier weapon is beyond me. The book I mentioned tells the author's version of how that came to be but I don't recall the details. I agree with your statement about lethality/accuracy with a lightweight weapon such as the M16 on full auto, it takes a VERY well trained shooter to hit what he thinks he's pointing at with the "rise" of the weapon as it "squirts". Only facing into a crowd quite close would it be very lethal, and then they all better be "bad guys" in the vicinity. But the AK47 certainly blew holes in many thousands of us on full auto, and after the humble operator had been lying in the mud and dust with it for who knows how long. The point was that the AR15 was a much deadlier weapon with higher muzzle velocity, reliable and unstoppable, and could "spray all day" compared with the M16 firing non-recommended ball powder with lower velocity and bigtime fouling/jamming problems. Supposedly those few North Vietnamese that ever faced the AR15 in battle were shot to pieces by it's American draftee unmotivated operators, and feared it greatly, instead of the other way around. One thing about the AK47, it's stutter certainly was different from any American weapon, and we never doubted whether it was enemy fire or not when we heard them. The M60 was no fun to pack around but it was easy to shoot and certainly hit things you aimed at. I would disagree with the basic idea that weapons problems were THE reason we lost the Vietnamese war. Our politicians' attempts to keep the public calmed by "only" exposing their sons and brothers and dads to the combat zone for "12 months and then you go home" certainly resulted in a hide-my-butt combat "spray and pray" method of holding the gun up in the air without even looking and burping it empty on full auto in hopes of scaring the enemy away or accidentally nailing a few. The WWII method of keeping combat GI's on the line until they either got killed or seriously wounded (with short rotations to rear echelons for breaks) resulted in the "get good or die" mode of combat, which of course with much tighter control of the news media helped our GI's become very serious and effective fighters, and then their release at the end of the war and coming home to heroe's welcomes helped them to put it behind them and get on with their lives. In retrospect I served a fairly wimpy tour with little actual danger, but I still feel pained when I recall coming home from a year of getting shot at at least occasionally in the name of patriotism and the "American Way" and getting only hostile or at best indifferent looks from anyone other than my immediate family. Most of us came home by ourselves, none of our fellow GI's escaping at the same time with us, and I remember a great deal of happiness to have gotten out on the one hand and guilt on the other, that my fellow GI's were still back in the SH** while I was back in "the World". It's great that our Desert Storm troops got all that glory and attention, it's just also shameful that our government's policies robbed us Nam GI's of a clear mission, national support, a feeling of doing something good for someone else, decent weapons, whatever. Where we were, at Camp Eagle near Phu Bai and Hue, South Vietnamese civilians were absolutely OFF LIMITS to us, we seldom ever saw any and felt like they were almost as much the enemy as the Viet Cong. Hard to get enthusiastic about that. Jim W5AOX From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 17 12:37:04 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id MAA27976 for ; Sun, 17 May 1998 12:37:03 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA01874 for glowbugs-outgoing; Sun, 17 May 1998 09:16:08 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from camel14.mindspring.com (camel14.mindspring.com [207.69.200.64]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA01869 for ; Sun, 17 May 1998 09:16:03 -0700 (PDT) Received: from sorcery-2 (user-38lcik9.dialup.mindspring.com [209.86.74.137]) by camel14.mindspring.com (8.8.5/8.8.5) with SMTP id MAA20797 for ; Sun, 17 May 1998 12:15:44 -0400 (EDT) Message-Id: <3.0.5.32.19980517111633.0083a370@pop.pipeline.com> X-Sender: lrware@pop.pipeline.com X-Mailer: QUALCOMM Windows Eudora Pro Version 3.0.5 (32) Date: Sun, 17 May 1998 11:16:33 +0000 To: glowbugs@piobaire.mines.uidaho.edu From: "Lawrence R. Ware" Subject: GB> FT-243 crystals Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Good afternoon folks, since I (like many others :-) didn't make it to Dayton again this year.... :-( I've been cleaning out my storage shed.... So it's time for round one of Larry's spring cleaning specials.... Normally I put this kind of stuff up on boatanchors instead of here, but since these crystals are about as primo glowbuggy as stuff gets, you gents get first crack this time. One box of 9 FT-243 crystals, one at 3743 KC (80 meter CW band I think?) and 8 at: 7038, 7042, 7120, 7125, 7130, 7140, 7142 and 7145 KC's... All these are in the CW portion of the 40 meter band I think? Sorry gents, but us non hams don't watch the band plans quite as close as you do... :-) Any way this pile of crystals will cost the lucky winner $3 for priority mail postage. -and- (Time for the "gotcha") The best funny story of what your going to use them for.... Winning entry may very well be reposted here, (with your name removed) Judges decision is final, Your voltage may vary. -Larry # Larry's Home for Wayward Test Equipment & Old Radios # Let your equipment retire in sunny central Florida. # Intensive Care, Private Bench Space, Frequent Use, # Factory trained HP, Tek & Fluke Surgeon on staff. # Good Home Guaranteed or double your junk back! # lrware@pipeline.com - Orlando, FL - # 407.679.1597 From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 17 16:43:37 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id QAA02292 for ; Sun, 17 May 1998 16:43:37 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id NAA03483 for glowbugs-outgoing; Sun, 17 May 1998 13:11:47 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from radiate.indy.net (radiate.indy.net [199.3.65.253]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id NAA03478 for ; Sun, 17 May 1998 13:11:43 -0700 (PDT) Received: from indy2.indy.net (root@indy2.indy.net [199.3.65.7]) by radiate.indy.net (8.8.7/8.8.7) with ESMTP id PAA10879; Sun, 17 May 1998 15:12:28 -0500 (EST) Received: from localhost (rbarmore@localhost [127.0.0.1]) by indy2.indy.net (8.8.7/8.8.7) with SMTP id PAA06117; Sun, 17 May 1998 15:12:27 -0500 (EST) Date: Sun, 17 May 1998 15:12:25 -0500 (EST) From: "Roberta J. Barmore" X-Sender: rbarmore@indy2 To: Brian Carling cc: DEVCOM , glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> 'Way back when In-Reply-To: <199805171521.LAA16777@relay.mnsinc.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Hi! About television.... It was invented one piece at a time; once still photography, sound recording, motion pictures, radio and radiotelephony were around, TV was just about inevitable. But it's the teetering top of a house of cards, each little bit calling for all the support of the level that went before. One of the very first *descriptions* of flying-spot TV was made by a Russian engineer/dreamer; but he wrote in the days when telegraphy was a new art, and the technology to make TV work wasn't available. Baird lived when the needed electrical parts (photocells, decent amplifiers and a good controllable light source) were around, and had the vision and wit to work out the mechnicals. AFAIK, he's the first person to televise intelligible live pictures, and was doing so about the same time Phil Farnsworth was a teenager plowing a field and thinking about how to send pictures by radio; so Baird deservedly gets the credit. (He also *recorded* television pictures, but couldn't play them back well; that had to wait until just a few years back, when a Hewlett-Packard engineer in the UK got interested in the old Phonovision discs! He's got a WWW page, which a little digging will turn up). Baird's mechanicals were copied about as soon as he told folks what he had; early scanning-disc workers in the US included RCA/NBC in New York and Camden, WCFL in Chicago, IL, and just up the road from me, Purdue University in West Lafayette, IN (W9XG). Bell Telephone also did considerable non-broadcast work, some of it unique pixel-by-pixel "parallel" systems. (Very good, quite impossible to send by radio at that time and impractical to send by wire: one pair per pixel, several hundred pixels for a barely-good picture, a thousand for a fair one--and we think WWW pages eat up bandwidth!) (About 250,000 pixels for a very good modern TV picture if my figuring is right). All the mechanical systems were doomed; Farnsworth's electronically scanned system inspired others just as Baird's mechanical methods had earlier, and RCA in the US and EMI in the UK were among the first to produce their own versions. Resolution was higher, studios were a bit more bearable (this is relative--*any* early TV studio was a horrible place to be!), and synchronization was far simpler. (Camera pick-up tube technology was a big driving force, and there turned out to be several ways to do it; who was "first" depends on what kind of first you're talking about--Farnsworth is generally acknowledged as having done all-electronic TV before anyone else). By the late 1930s, the television standards that would be used for the next ~50 years were already largely worked out and on the air (at least experimentally) in the US, Great Britain and European continent. Name any principal of WW II, and in most cases you've named a place that was doing television by the time the war began. ...Amplifier and transmitter design for television was another specialized art, building on the "wideband" amps originally developed to drive the neon lamp in mechanical TV and broadband multiplex rigs used for trans-oceanic telephony. Much of it found use (and rapid improvement) in RDF/RADAR systems during WW II and then went back to civilian work after, much changed from what it was before; RCA's prewar 1kW "commercial" (one or two sold) TV transmitter is not very much like the (5kW) TT5 that went on the air all over the States not too long after V-J day. (I happened to see a little Daven "TV" amp from the '30s at Dayton--very cute thing, resistance-coupled with a nice molded Bakelite chassis and some silly person had stuck a set of blue Arctures tubes in it. The specs on it are not too much worse than an inexpensive hi-fi preamp of a few years back; but it was not really so long ago that it was super-duper state of the art....) 73, --Bobbi KB9GKX "RJ" rbarmore@indy.net Roberta J. (Bobbi) Barmore FISTS #3388 * G-QRP #10001 * ARRL * RSGB * WIA Appreciator Of Vacuum-Tube Ham Gear and Vintage Keys From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 17 17:59:26 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id RAA16350 for ; Sun, 17 May 1998 17:59:26 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id OAA04481 for glowbugs-outgoing; Sun, 17 May 1998 14:30:57 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from uhura.concentric.net (uhura.concentric.net [206.173.119.93]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id OAA04464 for ; Sun, 17 May 1998 14:30:46 -0700 (PDT) Received: from cliff.concentric.net (cliff [206.173.119.90]) by uhura.concentric.net (8.8.8/(98/04/23 5.10)) id RAA05404; Sun, 17 May 1998 17:30:19 -0400 (EDT) [1-800-745-2747 The Concentric Network] Received: from ts003d09.alq-nm.concentric.net (ts003d09.alq-nm.concentric.net [206.173.164.69]) by cliff.concentric.net (8.8.8) id RAA29069; Sun, 17 May 1998 17:30:16 -0400 (EDT) Message-Id: <1.5.4.32.19980517213041.006a5224@pop3.concentric.net> X-Sender: jdport@pop3.concentric.net X-Mailer: Windows Eudora Light Version 1.5.4 (32) Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Sun, 17 May 1998 15:30:41 -0600 To: rbarmore@indy.net, glowbugs@piobaire.mines.uidaho.edu From: DEVCOM Subject: Re: GB> 'Way back when Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO At 03:12 PM 5/17/98 -0500, you wrote: > >Hi! > > About television.... Well, I was in process of responding and looked into the mail list and found your response and thought, good grief, she said it better than I would have, so there. Great writing as usual, Bobbi. Jim W5AOX From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 17 18:13:05 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id SAA30387 for ; Sun, 17 May 1998 18:13:04 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id OAA05195 for glowbugs-outgoing; Sun, 17 May 1998 14:47:00 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mh2.cts.com (root@mh2.cts.com [205.163.24.68]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id OAA05188 for ; Sun, 17 May 1998 14:46:56 -0700 (PDT) Received: from bwallace.cts.com (bwallace.cts.com [205.163.6.53]) by mh2.cts.com (8.8.7/8.8.5) with ESMTP id OAA13185 for ; Sun, 17 May 1998 14:46:27 -0700 (PDT) Message-Id: <199805172146.OAA13185@mh2.cts.com> From: "Ben Wallace" To: Subject: Re: GB> 'Way back when Date: Sun, 17 May 1998 14:46:14 -0700 X-MSMail-Priority: Normal X-Priority: 3 X-Mailer: Microsoft Internet Mail 4.70.1162 MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Television's History "From Encarta 98 Encyclopedia" The scientific principles on which television is based were discovered in the course of basic research. Only much later were these concepts applied to television as it is known today. The first practical television system began operating in the 1940s. In 1873 the Scottish scientist James Clerk Maxwell predicted the existence of the electromagnetic waves that make it possible to transmit ordinary television broadcasts. Also in 1873 the English scientist Willoughby Smith and his assistant Joseph May noticed that the electrical conductivity of the element selenium changes when light falls on it. This property, known as photoconductivity, is used in the vidicon television camera tube. In 1888 the German physicist Wilhelm Hallwachs noticed that certain substances emit electrons when exposed to light. This effect, called photoemission, was applied to the image-orthicon television camera tube. Although several methods of changing light into electric current were discovered, it was some time before the methods were applied to the construction of a television system. The main problem was that the currents produced were weak and no effective method of amplifying them was known. Then, in 1906, the American engineer Lee De Forest patented the triode vacuum tube. By 1920 the tube had been improved to the point where it could be used to amplify electric currents for television. Nipkow Disk Some of the earliest work on television began in 1884, when the German engineer Paul Nipkow designed the first true television mechanism. In front of a brightly lit picture, he placed a scanning disk (called a Nipkow disk) with a spiral pattern of holes punched in it. As the disk revolved, the first hole would cross the picture at the top. The second hole passed across the picture a little lower down, the third hole lower still, and so on. In effect, he designed a disk with its own form of scanning. With each complete revolution of the disk, all parts of the picture would be briefly exposed in turn. The disk revolved quickly, accomplishing the scanning within one-fifteenth of a second. Similar disks rotated in the camera and receiver. Light passing through these disks created crude television images. Nipkow's mechanical scanner was used from 1923 to 1925 in experimental television systems developed in the United States by the inventor Charles F. Jenkins, and in England by the inventor John L. Baird. The pictures were crude but recognizable. The receiver also used a Nipkow disk placed in front of a lamp whose brightness was controlled by the signal from the light-sensitive tube behind the disk in the transmitter. In 1926 Baird demonstrated a system that used a 30-hole Nipkow disk. Simultaneous to the development of a mechanical scanning method, an electronic method of scanning was conceived in 1908 by the English inventor A. A. Campbell-Swinton. He proposed using a screen to collect a charge whose pattern would correspond to the scene, and an electron gun to neutralize this charge and create a varying electric current. This concept was used by the Russian-born American physicist Vladimir Kosma Zworykin in his iconoscope camera tube of the 1920s. A similar arrangement was later used in the image-orthicon tube. The American inventor and engineer Philo Taylor Farnsworth also devised an electronic television system in the 1920s. He called his television camera, which converted each element of an image into an electrical signal, an image dissector. Farnsworth continued to improve his system in the 1930s, but his project lost its financial backing at the beginning of World War II (1939-1945). Many aspects of Farnsworth's image dissector were also used in Zworykin's more successful iconoscope camera. Cathode rays, or beams of electrons in evacuated glass tubes, were first noted by the British chemist and physicist Sir William Crookes in 1878. By 1908 Campbell-Swinton and a Russian, Boris Rosing, had independently suggested that a cathode-ray tube (CRT) be used to reproduce the television picture on a phosphor-coated screen. The CRT was developed for use in television during the 1930s by the American electrical engineer Allen B. DuMont. DuMont's method of picture reproduction is essentially the same as the one used today. The first home television receiver was demonstrated in Schenectady, New York, on January 13, 1928, by the American inventor Ernst F. W. Alexanderson. The images on the 76-mm (3-in) screen were poor and unsteady, but the set could be used in the home. A number of these receivers were built by the General Electric Company (GE) and distributed in Schenectady. On May 10, 1928, station WGY began regular broadcasting to this area. From glowbugs-owner@piobaire.mines.uidaho.edu Mon May 18 07:39:00 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id HAA14366 for ; Mon, 18 May 1998 07:39:00 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id EAA11905 for glowbugs-outgoing; Mon, 18 May 1998 04:12:28 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from smtp2.erols.com (smtp2.erols.com [207.172.3.235]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id EAA11895 for ; Mon, 18 May 1998 04:12:23 -0700 (PDT) Received: from LOCALNAME (207-172-52-49.s49.tnt1.brd.erols.com [207.172.52.49]) by smtp2.erols.com (8.8.8/8.8.5) with SMTP id HAA25621; Mon, 18 May 1998 07:12:15 -0400 (EDT) Message-Id: <199805181112.HAA25621@smtp2.erols.com> X-Sender: wmeara@pop.erols.com X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Mon, 18 May 1998 11:10:54 -0400 To: glowbugs@piobaire.mines.uidaho.edu From: Bill Meara Subject: GB> Mighty Midget RX (April '66 QST) Cc: homebrew@qth.net Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Glowbuggers: There is a Lew McCoy receiver in the April 1966 QST that is really very tempting. Three 6U8s. Single conversion superhet with a 455 kc IF. Crystal filter using two FT-243 rocks. I have most of the needed parts, but before I start melting solder, I want to make sure I understand the circuit. The one qustion I have relates to the detector. Its a very simple solid state diode detector. Two 1N34a's in a voltage doubler arrangement between the IF amp and the AF amp. Half of one of the 6U8's is used as a BFO at 455 (+/-) kc. Here's where I'm confused: Text reads: "There is sufficient bfo signal injection in V3A (IF AMP) without using a coupling capacitor, so none was used." The IF amp has a 455 kc transformer can in the plate. Seems to me if the mixing with the BFO energy was taking place in that stage, the resulting AF wouldn't make it through the can to the detector and AF AMP. Could it be that the mixing takes place in the detector circuit itself? Anyone have any experience with this RX? Thanks, 73 de N2CQR Bill Meara, Falls Church, Virginia wmeara@erols.com G-QRP #7965 http://www.mindspring.com/~johnmb/billm.htm From glowbugs-owner@piobaire.mines.uidaho.edu Mon May 18 09:43:41 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id JAA17584 for ; Mon, 18 May 1998 09:43:41 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id GAA13737 for glowbugs-outgoing; Mon, 18 May 1998 06:17:22 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from els.imed.com (imed.com [192.246.2.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id GAA13732 for ; Mon, 18 May 1998 06:17:18 -0700 (PDT) Received: from mails.imed.com by els.imed.com with SMTP (1.38.193.5/15.6) id AA19882; Mon, 18 May 1998 08:16:36 -0500 Received: from ccMail by mails.imed.com (IMA Internet Exchange 2.1 Enterprise) id 000ABF48; Mon, 18 May 98 08:15:05 -0600 Mime-Version: 1.0 Date: Mon, 18 May 1998 08:11:32 -0600 Message-Id: <000ABF48.@mails.imed.com> From: mack@mails.imed.com (Ray Mack) Subject: Re: GB> Mighty Midget RX (April '66 QST) To: glowbugs@piobaire.mines.uidaho.edu Cc: homebrew@qth.net Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Description: cc:Mail note part Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Bill: THis uses a circuit that is similar to the HR-10 from Heath. There is plenty of capcitance (a few uuf) between the plates of the 6U8 triode and pentode that the BFO (the triode) couples energy into the pentode plate circuit. You now have the amplified IF signal and the BFO signal coupled into the last IF transformer. You are absolutely correct that the mixing occurs in the detector itself! In the HR-10, this method of injection really messes with the AGC which is derived from the detector voltage. I would guess that the HR-10 was designed to use AGC on AM only and manual gain on CW. If memory serves correctly, these designs come from around the time of the transistion from AM to SSB. There wasn't much SSB in the very early 60's. This probably explains why the IF is so wide in the HR-10. Ray Mack WD5IFS mack@mails.imed.com Friendswood (Houston), TX ______________________________ Reply Separator _________________________________ Glowbuggers: There is a Lew McCoy receiver in the April 1966 QST that is really very tempting. Three 6U8s. Single conversion superhet with a 455 kc IF. Crystal filter using two FT-243 rocks. The one qustion I have relates to the detector. Its a very simple solid state diode detector. Two 1N34a's in a voltage doubler arrangement between the IF amp and the AF amp. Half of one of the 6U8's is used as a BFO at 455 (+/-) kc. Here's where I'm confused: Text reads: "There is sufficient bfo signal injection in V3A (IF AMP) without using a coupling capacitor, so none was used." The IF amp has a 455 kc transformer can in the plate. Seems to me if the mixing with the BFO energy was taking place in that stage, the resulting AF wouldn't make it through the can to the detector and AF AMP. Could it be that the mixing takes place in the detector circuit itself? Anyone have any experience with this RX? Thanks, 73 de N2CQR Bill Meara, Falls Church, Virginia From glowbugs-owner@piobaire.mines.uidaho.edu Mon May 18 10:18:11 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Gamma0/8.9.0.Gamma0) with ESMTP id KAA30043 for ; Mon, 18 May 1998 10:18:11 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id GAA14253 for glowbugs-outgoing; Mon, 18 May 1998 06:52:02 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from b11.b11.ingr.com (b11.b11.ingr.com [129.135.220.100]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id GAA14246 for ; Mon, 18 May 1998 06:51:55 -0700 (PDT) Received: from ro.com (lilliput.b11.ingr.com) by b11.b11.ingr.com (5.65c/1.921207) id AA23266; Mon, 18 May 1998 08:51:39 -0500 Message-Id: <35603CEB.9151F323@ro.com> Date: Mon, 18 May 1998 08:51:39 -0500 From: Dan Kerl X-Mailer: Mozilla 4.04 [en] (WinNT; I) Mime-Version: 1.0 To: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Oven elements... References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Ken Gordon wrote: > > Does anyone know if the characteristics of nichrome wire, as found in > replacement oven elements, would be suitable for use as high-wattage grid > leaks? It seems to me that they are rather low resistance though. What I > need is about 200 Watts worth of about 50 k Ohms, but I have to be able to > adjust the resistance to balance the tubes (Push Pull). Ideas? It would take a whole bunch of these in series to get 50K. For example, a 1 kW element designed to operate at 120V would have a hot resistance of a little less than 15 ohms. Cold resistance would be a good bit lower. I would probably just find some non inductive power resistors that I could use in series-parallel combinations to achieve your target values (e.g. ten 5K 20W units in series, etc.). Can you figure out how to mount this stuff ? Is inductance a problem (what frequencies) ? Operating temperature (NiCr resistance wire has a pretty high temp coeff)? Lets see... 200W in 50K requires a little over 3100V. This sounds like an interesting project. :-). -- Dan Kerl dlkerl@ro.com From Majordomo-Owner@piobaire.mines.uidaho.edu Fri Jun 5 10:34:44 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id KAA02882 for ; Fri, 5 Jun 1998 10:34:44 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id KAA18887 for ; Fri, 5 Jun 1998 10:35:55 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA02408; Fri, 5 Jun 1998 07:36:00 -0700 (PDT) Date: Fri, 5 Jun 1998 07:36:00 -0700 (PDT) Message-Id: <199806051436.HAA02408@piobaire.mines.uidaho.edu> X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to Majordomo-Owner@piobaire.mines.uidaho.edu using -f To: jski@WPI.EDU From: Majordomo@piobaire.mines.uidaho.edu Subject: Majordomo results Reply-To: Majordomo@piobaire.mines.uidaho.edu Status: RO -- >>>> who glowbugs **** List 'glowbugs' is a private list. **** Only members of the list can do a 'who'. **** You aren't a member of list 'glowbugs'. >>>> >>>> -- Joe END OF COMMANDS From Majordomo-Owner@piobaire.mines.uidaho.edu Fri Jun 5 10:38:25 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id KAA02894 for ; Fri, 5 Jun 1998 10:38:24 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id KAA19764 for ; Fri, 5 Jun 1998 10:39:35 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA02461; Fri, 5 Jun 1998 07:39:43 -0700 (PDT) Date: Fri, 5 Jun 1998 07:39:43 -0700 (PDT) Message-Id: <199806051439.HAA02461@piobaire.mines.uidaho.edu> X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to Majordomo-Owner@piobaire.mines.uidaho.edu using -f To: jski@WPI.EDU From: Majordomo@piobaire.mines.uidaho.edu Subject: Majordomo results Reply-To: Majordomo@piobaire.mines.uidaho.edu Status: RO -- >>>> subscribe glowbugs jski@wpi.edu Your request to Majordomo@piobaire.mines.uidaho.edu: subscribe glowbugs jski@wpi.edu has been forwarded to the owner of the "glowbugs" list for approval. This could be for any of several reasons: You might have asked to subscribe to a "closed" list, where all new additions must be approved by the list owner. You might have asked to subscribe or unsubscribe an address other than the one that appears in the headers of your mail message. When the list owner approves your request, you will be notified. If you have any questions about the policy of the list owner, please contact "glowbugs-approval@piobaire.mines.uidaho.edu". Thanks! Majordomo@piobaire.mines.uidaho.edu >>>> >>>> -- Joe END OF COMMANDS From owner-glowbugs@piobaire.mines.uidaho.edu Fri Jun 5 10:57:14 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id KAA03014 for ; Fri, 5 Jun 1998 10:57:13 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id KAA23231 for ; Fri, 5 Jun 1998 10:58:25 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA02811; Fri, 5 Jun 1998 07:58:36 -0700 (PDT) Date: Fri, 5 Jun 1998 07:58:36 -0700 (PDT) Message-Id: <199806051458.HAA02811@piobaire.mines.uidaho.edu> X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs@piobaire.mines.uidaho.edu using -f To: jski@WPI.EDU From: Majordomo@piobaire.mines.uidaho.edu Subject: Welcome to glowbugs Reply-To: Majordomo@piobaire.mines.uidaho.edu Status: RO -- Welcome to the glowbugs mailing list! If you ever want to remove yourself from this mailing list, send the following command in email to "glowbugs-request@piobaire.mines.uidaho.edu": unsubscribe Or you can send mail to "Majordomo@piobaire.mines.uidaho.edu" with the following command in the body of your email message: unsubscribe glowbugs jski@wpi.edu Here's the general information for the list you've subscribed to, in case you don't already have it: [Last updated on: Tues Dec 9 15:52:50 1997] INFO ABOUT THE GLOWBUGS MAILING LIST (Updated 97.12.09) First, be sure to save or print this information for future reference!!!!! Questions/problems should be addressed to the list-owner/ list-mechanic: WELCOME TO THE GLOWBUGS EMAIL LIST. This list is provided for the convenience and enjoyment of Amateur Radio Operators who enjoy owning, operating, and BUILDING tube type equipment. Be sure to share your questions, observations, new developments with members of the list! To post messages to the list, address them to this address: glowbugs@piobaire.mines.uidaho.edu To retrieve a list of email addresses of list members, post an email message to this address: majordomo@piobaire.mines.uidaho.edu In the BODY of the message, put ONLY these words: who glowbugs To retrieve the lastest version of this information file, post an email message to this address: majordomo@piobaire.mines.uidaho.edu Place ONLY these words in the BODY of the message: info glowbugs To SUBSCRIBE to the list, post a message to this email address: majordomo@piobaire.mines.uidaho.edu In the BODY of the message, put ONLY these words: subscribe glowbugs To UN-SUBSCRIBE from the list, post a message to this address: majordomo@piobaire.mines.uidaho.edu In the BODY of the message, put ONLY these words: unsubscribe glowbugs THEND THEND THEND THEND THEND THEND THEND From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jun 5 13:53:12 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id NAA00254 for ; Fri, 5 Jun 1998 13:53:12 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id NAA00339 for ; Fri, 5 Jun 1998 13:53:33 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA04908 for glowbugs-outgoing; Fri, 5 Jun 1998 10:08:25 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from dewdrop2.mindspring.com (dewdrop2.mindspring.com [207.69.200.82]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id KAA04903 for ; Fri, 5 Jun 1998 10:08:21 -0700 (PDT) Received: from sorcery-2 (user-37kbv28.dialup.mindspring.com [207.69.252.72]) by dewdrop2.mindspring.com (8.8.5/8.8.5) with SMTP id NAA20855 for ; Fri, 5 Jun 1998 13:08:02 -0400 (EDT) Message-Id: <3.0.5.32.19980605120559.0085c690@pop.pipeline.com> X-Sender: lrware@pop.pipeline.com X-Mailer: QUALCOMM Windows Eudora Pro Version 3.0.5 (32) Date: Fri, 05 Jun 1998 12:05:59 +0000 To: glowbugs@piobaire.mines.uidaho.edu From: "Lawrence R. Ware" Subject: GB> Old/Large crystals Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Good afternoon folks! I offered these on the boatanchors list last week and did not get a single funny entry. :-( Just a couple of "Ill take em" messages. Must be the heat. Anyway, they ought to be good for some kind of glowbuggy project, even if you take them apart and just use the cases. 23 each old cystals (FT-241A type), 10 each one size up from above, (larger/longer pins mainly.) One is marked for a BC-942 if that helps... Some really odd frequency parts here... All 33 available for $3 shipping in exchange for first really *funny* story of what you will use them for.... Sharpen up your pencils, and remember, the first entry that has me falling out of my chair laughing wins.... Rules of Ware apply! -Larry # This message transmitted with 100% recycled electrons. # Your voltage may vary. # # lrware@pipeline.com From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jun 5 16:48:48 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id QAA00748 for ; Fri, 5 Jun 1998 16:48:45 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id QAA30618 for ; Fri, 5 Jun 1998 16:49:06 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id NAA08158 for glowbugs-outgoing; Fri, 5 Jun 1998 13:21:00 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail1.monumental.com (mail1.mnsinc.com [206.55.3.18]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id NAA08153 for ; Fri, 5 Jun 1998 13:20:56 -0700 (PDT) Received: from COMPUTER (a0024.bethesda.mns.net [206.239.105.56]) by mail1.monumental.com (8.8.8/8.8.8) with SMTP id QAA25808 for ; Fri, 5 Jun 1998 16:16:34 -0400 (EDT) Message-Id: <199806052016.QAA25808@mail1.monumental.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: glowbugs@piobaire.mines.uidaho.edu Date: Fri, 5 Jun 1998 16:13:27 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: Re: GB> 7120 tonight Reply-to: bry@mnsinc.com Priority: normal In-reply-to: <19980605.083559.3382.2.BobAC5AM@juno.com> X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I was on last night. Heard NO ONE on or around 7120. I called CQ for a while. No replies. THEN I went to 7050 and worked W8YMO in Cleveland for a very nice ragchew on the resurrecteed Valiant here! On 5 Jun 98 at 8:35, Bob wrote: > Hello Ronnie and all GB/BA ops, > > Yes the QRN started building up and was real bad by 0215z when I > shut down. > > John, W7ZFB and I had a QSO going on 7119 from about 0115z til 0145z > with no problem. > > Ron, if possible try getting on a little earlier on 7118. Also I am > usually listening on 7050 about 2100Z til dark. Sandy, W5TVW and I > usually have a short QSO at about 2100Z..... We are expecting more > thunderstorms today so if any close to my QTH I will be QRT and > disconnected...... Hopefully this weekend the QRN will be out of > the area... but I hope we get some rain first.... > > C all of you BA guys on the air... 7050, 7118 and 3579.... > > 73, Bob AC5AM (ex. K5QYY vintage 1958) Natchitoches, LA > > ____________________________________________________________________ > _ You don't need to buy Internet access to use free Internet e-mail. > Get completely free e-mail from Juno at http://www.juno.com Or call > Juno at (800) 654-JUNO [654-5866] > **************************************************** *** 73 from Radio AF4K/G3XLQ Gaithersburg, MD USA * ** E-mail to: bry@mnsinc.com * *** ICQ 6124470 *** ** http://www.mnsinc.com/bry/ * **************************************************** AM International #1024, TENTEN #13582. GRID FM19. Rigs: Valiant, DX-60/HG-10, FT-840, TM-261A, Harvey Wells Bandmaster, Drake 2 C. TEN-TEN #13582, DXCC #17763, Bicentennial WAS From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jun 5 16:55:58 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id QAA00758 for ; Fri, 5 Jun 1998 16:55:58 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id QAA01404 for ; Fri, 5 Jun 1998 16:56:20 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id NAA08358 for glowbugs-outgoing; Fri, 5 Jun 1998 13:32:24 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail1.monumental.com (mail1.mnsinc.com [206.55.3.18]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id NAA08352 for ; Fri, 5 Jun 1998 13:32:19 -0700 (PDT) Received: from COMPUTER (a0024.bethesda.mns.net [206.239.105.56]) by mail1.monumental.com (8.8.8/8.8.8) with SMTP id QAA28763 for ; Fri, 5 Jun 1998 16:27:58 -0400 (EDT) Message-Id: <199806052027.QAA28763@mail1.monumental.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: glowbugs@piobaire.mines.uidaho.edu Date: Fri, 5 Jun 1998 16:24:51 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: (Fwd) Re: GB> Even More Fun with 3B28 rectifiers Reply-to: bry@mnsinc.com Priority: normal X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Well folks, I muist have been dreaming about the 3B28s glowing - they don't! Also, I seem to have found two good ones, as the rig si now working fine. The Smoothing Capacitors are fine thank you! At 09:11 AM 6/2/98 -0700, Ken Gordon wrote: >> I have run across several cases of the choke insulation to ground >> breaking down. After a while, it leaves enough carbon track that >> you can see it with a low voltage (normal) VOM. Dunno why the 3B28's >> aren't bright, though. > >I don't remember MY 3B28s glowing at ALL unless the load was pretty heavy. > >Ken > > I concur with your observations also Ken. I have a pair of 3B28's in my Valiant I and they do not glow, even under normal transmitter load. I would suspect that Bryan's filter caps are very leaky. 73...Mike VE3FGU ********************************************************** Mike (VE3FGU) & Lynda Toneri E-mail: toneri@ils.net Keswick, Ontario WEBPAGE: http://www.geocities.com/heartland/meadows/8218 *********************************************************** **************************************************** *** 73 from Radio AF4K/G3XLQ Gaithersburg, MD USA * ** E-mail to: bry@mnsinc.com * *** ICQ 6124470 *** ** http://www.mnsinc.com/bry/ * **************************************************** AM International #1024, TENTEN #13582. GRID FM19. Rigs: Valiant, DX-60/HG-10, FT-840, TM-261A, Harvey Wells Bandmaster, Drake 2 C. TEN-TEN #13582, DXCC #17763, Bicentennial WAS From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jun 5 17:07:11 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id RAA00768 for ; Fri, 5 Jun 1998 17:07:08 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id RAA01396 for ; Fri, 5 Jun 1998 17:07:30 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id NAA08407 for glowbugs-outgoing; Fri, 5 Jun 1998 13:35:09 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail1.monumental.com (mail1.mnsinc.com [206.55.3.18]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id NAA08398 for ; Fri, 5 Jun 1998 13:35:02 -0700 (PDT) Received: from COMPUTER (a0024.bethesda.mns.net [206.239.105.56]) by mail1.monumental.com (8.8.8/8.8.8) with SMTP id QAA29463 for ; Fri, 5 Jun 1998 16:30:41 -0400 (EDT) Message-Id: <199806052030.QAA29463@mail1.monumental.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: glowbugs@piobaire.mines.uidaho.edu Date: Fri, 5 Jun 1998 16:27:34 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: Re: GB> Even More Fun with 3B28 rectifiers Reply-to: bry@mnsinc.com Priority: normal In-reply-to: <199806030420.VAA21176@piobaire.mines.uidaho.edu> X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On 2 Jun 98 at 21:20, JMcAulay wrote: > Well, Bryan, I still vote for the filter caps or maybe the choke. > How did you check those caps, anyway? I've seen ones checked with > anything up to a megger that looked great and didn't work worth a > hoot. I pulled the plate caps off the RF 6146es, and the B+ started behaving - got about 770 unloaded volts - all OK! But after I changed on 3B28 and put the plate caps back on one at a time, it seems to be behaving fine now! Made several QSOs anyway! > Back to basics, learned from an AC/DC radio on the bench in front of > me: if there's lotsa hum in the speaker, you replace the filter > caps. Don't bother testing 'em, just do it. Yep, troubleshooting > by substitution is da best way, sometimes. Of course, those BIG > ones in the HV supply aren't two-dollar items, are they! About $4.00 each from AES. They are band spanking new, and doing fine! > Of course, we could be all wet and it turns out to be the modulation > transformer leaking to ground, or somethin' else bizarre.... Nope, I eliminated that path long ago! So far so good, but if it happens again, the 3B28s will be out the window! **************************************************** *** 73 from Radio AF4K/G3XLQ Gaithersburg, MD USA * ** E-mail to: bry@mnsinc.com * *** ICQ 6124470 *** ** http://www.mnsinc.com/bry/ * **************************************************** AM International #1024, TENTEN #13582. GRID FM19. Rigs: Valiant, DX-60/HG-10, FT-840, TM-261A, Harvey Wells Bandmaster, Drake 2 C. TEN-TEN #13582, DXCC #17763, Bicentennial WAS From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 6 00:36:20 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id AAA00983 for ; Sat, 6 Jun 1998 00:36:19 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id AAA24942 for ; Sat, 6 Jun 1998 00:36:47 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id VAA13071 for glowbugs-outgoing; Fri, 5 Jun 1998 21:14:54 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mtiwmhc01.worldnet.att.net (mtiwmhc01.worldnet.att.net [204.127.131.36]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id VAA13066 for ; Fri, 5 Jun 1998 21:14:49 -0700 (PDT) Received: from LOCALNAME ([12.65.208.132]) by mtiwmhc01.worldnet.att.net (InterMail v03.02.03 118 118 102) with SMTP id <19980606041337.JCPT22706@LOCALNAME>; Sat, 6 Jun 1998 04:13:37 +0000 X-Sender: ebjr@postoffice.worldnet.att.net X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: BASWAPLIST@FOOTHILL.NET, boatanchors@theporch.com, BOATANCHORS@listserv.tempe.gov, glowbugs@piobaire.mines.uidaho.edu, listserv@listserv.tempe.gov From: Sandy W5TVW Subject: GB> FS/FT: Power supply parts (Large!) Message-Id: <19980606041337.JCPT22706@LOCALNAME> Date: Sat, 6 Jun 1998 04:13:37 +0000 Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Hello gang, I have aquired some power supply components that may be of interest to the 1-2 Kw. amplifier builder. I already have a Henry 2K-2 console, or I'd sure keep these! One- Kenyon plate transformer, 115/230 input, 2900-0-2900 volt secondary at 750 ma easy. One-Kenyon matching filter choke, I haven't measured the inductance yet! Three- 4 mfd. @ 3000 volt oil-filled capacitors Two large bleeder resistors (175-200 watters) A solid state rectifier block for the above. All of the above from a parted out CAI 1.5 Kw PEP output amplifier supply unit. Would make an awfully nice heavy duty power supply for such things as a pair of 3-500Z's, 4-400A's, 833's....etc! I'm interested in offers/trades. Pickup only, I'm afraid! These chunks of iron are heavy! Tradewise, I'm looking for a Measurements 59 grid dip meter, General-Radio stuff-particularly RF admittance bridge, precision capacitor decades, RAL receiver with or without power supply, and a Hallicrafters SR-75. What have you? 73, Sandy W5TVW From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 6 00:59:18 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id AAA00997 for ; Sat, 6 Jun 1998 00:59:17 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id AAA24188 for ; Sat, 6 Jun 1998 00:59:46 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id VAA13309 for glowbugs-outgoing; Fri, 5 Jun 1998 21:30:18 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from imo24.mx.aol.com (imo24.mx.aol.com [198.81.17.68]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id VAA13303 for ; Fri, 5 Jun 1998 21:30:09 -0700 (PDT) From: MNHopkins@aol.com Received: from MNHopkins@aol.com by imo24.mx.aol.com (IMOv14_b1.1) id PVPQa22588 for ; Sat, 6 Jun 1998 00:28:56 -0400 (EDT) Message-ID: Date: Sat, 6 Jun 1998 00:28:56 EDT To: glowbugs@piobaire.mines.uidaho.edu Mime-Version: 1.0 Subject: GB> Regen. RX Bib. -- if you must. Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit X-Mailer: AOL 3.0 for Windows 95 sub 18 Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I still think using a straight regenerative RX on the bands is illegal because of the QRM, but if you insist on doing it, instead of building a proper regenerative suberhet to the memory of the immortal Frank Jones, know of Lindsay's resources: "Secrets of Homebuilt Regenerative Receivers," Rockey, C., Lindsay Publications, 1996, 127 pages. This is the starting point and the end of the quest. Rockey was publishing in the '40s and thru the '80s. I found 6 of his articles in a 1961 Radio TV Experimenter and he was even a tech editor of the Milliwatt, an obscure QRP magazine, and contributor to the British QRP journal, Sprat. This book seems to have come from an interview. "How to Build Your First Vacuum Tube Regenerative Reveiver," Lindsay, T., Lindsay Publications, 1997, 127 pages. A practical how to book with special emphasis on a 6AW8/6C4 rig with a 6AU8,/6AV6 variation. Public spiritedly, he ends up using his as a tunable IF instead of a left handed QRP TX. "1934 Official SW Radio Manual," Lindsay Publications, This is a collection of articles including one by Lindsay on using solid state devices that may be difficult to square with his other writings. "Those Great Old Handbook Receivers," Lindsay Publications, 1996, 158 pages Reprints from 1929 and 1934 ARRL Handbooks. I bought this at Dayton not expecting much and ended up getting roasted in the sauna reading the VHF section. Lindsay publishes all sorts of books and can be found at: Lindsay Publications Box 578 Bradley, IL 60916 -- or --- http://www.keynet.net/~lindsay 73 de ab5L, michael in dallas, student of Tecraft and International (ICM) ham products and mementoes of Six Meters' Golden Age: 1957-58 Michael Hopkins Box 226841 Dallas, TX 75222 MNHopkins@AOL.com From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 6 09:31:37 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id JAA01254 for ; Sat, 6 Jun 1998 09:31:37 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id JAA02407 for ; Sat, 6 Jun 1998 09:32:10 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id GAA17708 for glowbugs-outgoing; Sat, 6 Jun 1998 06:09:32 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from m27.boston.juno.com (m27.boston.juno.com [205.231.100.186]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id GAA17703 for ; Sat, 6 Jun 1998 06:09:27 -0700 (PDT) Received: (from bobac5am@juno.com) by m27.boston.juno.com (queuemail) id J`F16156; Sat, 06 Jun 1998 09:08:06 EDT To: bry@mnsinc.com, glowbugs@piobaire.mines.uidaho.edu Date: Sat, 6 Jun 1998 08:06:44 -0500 Subject: Re: GB> 7120 tonight Message-ID: <19980606.080729.3534.1.BobAC5AM@juno.com> References: <199806052016.QAA25808@mail1.monumental.com> X-Mailer: Juno 1.49 X-Juno-Line-Breaks: 0,2-15 From: bobac5am@juno.com (Bob Stolzle) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On Fri, 5 Jun 1998 16:13:27 -0400 "Brian Carling" writes: >I was on last night. Heard NO ONE on or around 7120. >I called CQ for a while. No replies. > >THEN I went to 7050 and worked W8YMO in Cleveland for a very nice >ragchew on the resurrecteed Valiant here! > Hello Bry and BA guys, We had BIG TIME thunderboomers here last night. So guess almost everyone in this 4 state area was wiped out although we did get that needed rain. 73, Bob AC5AM (ex. K5QYY vintage 1958) _____________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail from Juno at http://www.juno.com Or call Juno at (800) 654-JUNO [654-5866] From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 6 11:54:05 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id LAA01325 for ; Sat, 6 Jun 1998 11:54:04 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id LAA07136 for ; Sat, 6 Jun 1998 11:54:37 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA18806 for glowbugs-outgoing; Sat, 6 Jun 1998 08:28:50 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id IAA18801 for ; Sat, 6 Jun 1998 08:28:45 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id PAA08803; Sat, 6 Jun 1998 15:24:44 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806061924.PAA08803@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> Regen. RX Bib. -- if you must. In-Reply-To: from "MNHopkins@aol.com" at "Jun 6, 98 00:28:56 am" To: MNHopkins@aol.com Date: Sat, 6 Jun 1998 15:24:44 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > I still think using a straight regenerative RX on the bands is illegal because > of the QRM, but if you insist on doing it, instead of building a proper > regenerative suberhet to the memory of the immortal Frank Jones, know of > Lindsay's resources: It has been my experiences over the years that IFF you build a proper regenerative receiver, you get no radiation sufficient to be heard more than a couple of hundred feet away, at absolute worst. In my book, that is nil QRM. Part 15 devices radiate much more. DE NA4G/Bob UP From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 6 12:47:32 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id MAA01360 for ; Sat, 6 Jun 1998 12:47:31 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id MAA08918 for ; Sat, 6 Jun 1998 12:48:08 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA19432 for glowbugs-outgoing; Sat, 6 Jun 1998 09:24:10 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from alyssa.iaxs.net (root@alyssa.iaxs.net [205.164.100.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA19426 for ; Sat, 6 Jun 1998 09:24:06 -0700 (PDT) Received: from citrus.iaxs.net (bill@citrus.iaxs.net [206.43.66.3]) by alyssa.iaxs.net (8.8.8/iaxs-19971103) with ESMTP id LAA29215 for ; Sat, 6 Jun 1998 11:23:45 -0500 (CDT) Received: (from bill@localhost) by citrus.iaxs.net (8.8.8/iaxs-citrus-19971103) id LAA17010 for glowbugs@piobaire.mines.uidaho.edu; Sat, 6 Jun 1998 11:23:43 -0500 (CDT) Date: Sat, 6 Jun 1998 11:23:43 -0500 (CDT) From: Bill Hawkins Message-Id: <199806061623.LAA17010@citrus.iaxs.net> To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Phase angle and resonance Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Work continues on a tube TRF for reception of WWVB at 60 KHz. I'm about to wind a square loop antenna for it, to go in the attic. Most of the stuff I've seen uses a resonating capacitor across the loop winding, reasonable because it's fixed frequency. But the reason to receive WWVB is to make sensitive time comparisons with a local frequency standard. This means that the phase of the antenna signal relative to the phase of the WWVB ground signal must remain constant, else you don't know who is drifting. Seems to me that mechanical resonant systems have a phase shift between input and output that changes most rapidly at resonance. Terman and several other references don't mention it, I suppose because amplitude and frequency are all that usually matter. So, will a resonant loop antenna change phase with WWVB as temperature changes R, L, and C? Does anybody have operating experience with a resonant loop antenna? The resonant circuits in the receiver would have a similar problem, but the temperature won't vary as much as the temp in an uninsulated northern attic. Or have the critical reasoning faculties of my brain become corroded from lack of use? Regards, Bill Hawkins From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 6 12:55:18 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id MAA01370 for ; Sat, 6 Jun 1998 12:55:18 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id MAA13757 for ; Sat, 6 Jun 1998 12:55:55 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA19620 for glowbugs-outgoing; Sat, 6 Jun 1998 09:32:11 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from camel8.mindspring.com (camel8.mindspring.com [207.69.200.58]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA19613 for ; Sat, 6 Jun 1998 09:32:06 -0700 (PDT) Received: from default (user-38lc93m.dialup.mindspring.com [209.86.36.118]) by camel8.mindspring.com (8.8.5/8.8.5) with SMTP id MAA01383; Sat, 6 Jun 1998 12:31:43 -0400 (EDT) Message-Id: <3.0.1.32.19980606123053.00694870@pop.mindspring.com> X-Sender: k4oah@pop.mindspring.com X-Mailer: Windows Eudora Light Version 3.0.1 (32) Date: Sat, 06 Jun 1998 12:30:53 -0400 To: boatanchors@sco.theporch.com From: Garey Barrell Subject: GB> FS: More Books Cc: glowbugs@piobaire.mines.uidaho.edu Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Prices do not include shipping. Radio Servicing - Marcus, 2nd Edition, 1954 VGC to Exc, slight fraying at top and bottom of spine. Very faint magic marker on spine. $25 Hawkins' Electrical Dictionary - M.E. Hawkins, Audel, 1915 (1925 Reprint). Leather(ette?) binding with gilt edge pages. VGC to Exc, slight fraying at top and bottom of spine. $25 Radio Operating Q&A's - Nilson and Hornung, 7th Edition, 1940. VGC, minor fraying top and bottom of spine and cover edges. $10 Electric Radio - Full set, Issue 1-106 EXCEPT #47. MINT condition EXCEPT minor water (Kool-Aid?) stains on edges of 4 issues and one more extensive but does not hinder readability. $185.00 Essentials of Radio - Slurzberg & Osterheld, 1948. VGC to Exc. $30 Garey - K4OAH k4oah@mindspring.com Atlanta From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 6 14:14:49 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id OAA01410 for ; Sat, 6 Jun 1998 14:14:49 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id OAA20719 for ; Sat, 6 Jun 1998 14:15:27 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA20801 for glowbugs-outgoing; Sat, 6 Jun 1998 10:50:19 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from pp.hw.ac.uk (pp@pp.hw.ac.uk [137.195.151.253]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id KAA20785 for ; Sat, 6 Jun 1998 10:50:09 -0700 (PDT) Received: from punt2.hw.ac.uk by pp.hw.ac.uk with SMTP(trusted); Sat, 6 Jun 1998 18:49:46 +0100 Received: from annexuser3.cen.hw.ac.uk (annexuser3.cen.hw.ac.uk [137.195.165.12]) by punt2.hw.ac.uk (8.8.8/8.8.8) with SMTP id SAA11200; Sat, 6 Jun 1998 18:49:39 +0100 Message-Id: <199806061749.SAA11200@punt2.hw.ac.uk> MIME-Version: 1.0 To: bill From: Bill Jarvis CC: glowbugs Date: Sat, 06 Jun 1998 18:49:39 -0600 X-Mailer: Net-Tamer 1.11 Subject: GB> Re: GB Phase angle and resonance Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On 1998-06-06 bill@iaxs.net said: Work continues on a tube TRF for reception of WWVB at 60 KHz. I'm about to wind a square loop antenna for it, to go in the attic. Most of the stuff I've seen uses a resonating capacitor across the loop winding, reasonable because it's fixed frequency. But the reason to receive WWVB is to make sensitive time comparisons with a local frequency standard. This means that the phase of the antenna signal relative to the phase of the WWVB ground signal must remain constant, else you don't know who is drifting. Seems to me that mechanical resonant systems have a phase shift between input and output that changes most rapidly at resonance. Terman and several other references don't mention it, I suppose because amplitude and frequency are all that usually matter. So, will a resonant loop antenna change phase with WWVB as temperature changes R, L, and C? Does anybody have operating experience with a resonant loop antenna? The resonant circuits in the receiver would have a similar problem, but the temperature won't vary as much as the temp in an uninsulated northern attic. Or have the critical reasoning faculties of my brain become corroded from lack of use? Regards, Bill Hawkins Presumably your input circuit will take the traditional form of the loop (being the L or part of the L) in parallel with the tuning C. That's a 2-terminal device, and the input (in a sense!) goes across the 2 terminals; and you take the output from the same 2 terminals. So, there cannot be any phase change introduced. I'm familiar with the phase-vs-frequency graph showing very rapid change at resonance; but I don't think it applies to your situation. I'll fwd this to my former tutor; he knows these things! 73, ============ ===== ===== BILL J. ===== ===== ============ GM8APX, qthr Edinburgh, Scotland, UK Heu! Tintinnuntius meus sonat! Net-Tamer V 1.11 - Registered From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 6 14:41:22 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id OAA01429 for ; Sat, 6 Jun 1998 14:41:21 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id OAA18754 for ; Sat, 6 Jun 1998 14:42:00 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id LAA21135 for glowbugs-outgoing; Sat, 6 Jun 1998 11:17:55 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from okcforum.org (okcforum.accessacg.net [206.30.124.5]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id LAA21130 for ; Sat, 6 Jun 1998 11:17:51 -0700 (PDT) Received: (from psykey@localhost) by okcforum.org (8.8.7/8.8.7) id NAA18735; Sat, 6 Jun 1998 13:14:17 -0500 From: Jim Glover Message-Id: <199806061814.NAA18735@okcforum.org> Subject: Re: GB> Regen. RX Bib. -- if you must. To: rdkeys@seedlab1.cropsci.ncsu.edu (User Rdkeys Robert D. Keys) Date: Sat, 6 Jun 1998 13:14:17 -0500 (CDT) Cc: MNHopkins@aol.com, glowbugs@piobaire.mines.uidaho.edu In-Reply-To: <199806061924.PAA08803@seedlab1.cropsci.ncsu.edu> from "User Rdkeys Robert D. Keys" at Jun 6, 98 03:24:44 pm Content-Type: text Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > > It has been my experiences over the years that IFF you build a proper > regenerative receiver, you get no radiation sufficient to be heard more > than a couple of hundred feet away, at absolute worst. In my book, that > is nil QRM. Part 15 devices radiate much more. > > DE NA4G/Bob UP > So Bob... What're the essentials of making a regenerative receiver "proper" in this respect? Would a one-tube, single-stager with the TINY tuning cap you recommend, and loose antenna coupling (I plan to start by trying a single turn around the tank coil, at about twice the tank coil's diameter) be sufficient? Or would one really need that separate RF stage to reduce radiation to the levels you describe? Thanks! --Jim WB5UDE From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 6 14:46:18 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id OAA01436 for ; Sat, 6 Jun 1998 14:46:17 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id OAA17303 for ; Sat, 6 Jun 1998 14:46:56 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id LAA21276 for glowbugs-outgoing; Sat, 6 Jun 1998 11:25:04 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from imo29.mx.aol.com (imo29.mx.aol.com [198.81.17.73]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id LAA21271 for ; Sat, 6 Jun 1998 11:25:01 -0700 (PDT) From: MNHopkins@aol.com Received: from MNHopkins@aol.com by imo29.mx.aol.com (IMOv14_b1.1) id POITa20473 for ; Sat, 6 Jun 1998 14:23:52 -0400 (EDT) Message-ID: Date: Sat, 6 Jun 1998 14:23:52 EDT To: glowbugs@piobaire.mines.uidaho.edu Mime-Version: 1.0 Subject: GB> Radiating Regens -- don't kid me Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit X-Mailer: AOL 3.0 for Windows 95 sub 18 Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Several have written to the point that a "properly built," or "modern (sic)" or some other superqualified type of booper regenerative receiver does not have "objectionable" radiation on the band at the frequency to which it is turned. Come on, folks, they made too much noise for the Navy in the '20s and some, indeed many, are building them again on cakepans and such. I freely agree that the problem can be defeated. Charles Kitchin, in his Olympic treatment of the subject on Communications Quarterly in 1995 sums it up -- use a RF amp in front of the regenerative stage. He also shows how the throttle capacitor method of regeneration control is best, just like C.F Rockey knew and told in his book. The problem with this thread is that many out there are puttng anachronisms from various sounces on the air in search of yesterday or youth or whatever. These atavism can and do cause objectionable QRM. Even 10mW can work several states away, as one posting and Chuck Adams, K5FO, the QRP-L list guru never runs more than 900mW. Indeed, new RFI standards in Great Britain may even obviate use of direct conversion RXs -- far cleaner beasts than a blooper. The regenerative detector was and is one of Armstrong's greatest feats. I love them and use them behind converters or IF cans where their versitility is useful, but not straight into a voltage fed antenna. 73 de ab5L, michael in dallas, student of Tecraft and International (ICM) ham products and mementoes of Six Meters' Golden Age: 1957-58 Michael Hopkins Box 226841 Dallas, TX 75222 MNHopkins@AOL.com From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 6 15:28:59 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id PAA01460 for ; Sat, 6 Jun 1998 15:28:58 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id PAA13750 for ; Sat, 6 Jun 1998 15:29:36 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA21711 for glowbugs-outgoing; Sat, 6 Jun 1998 12:03:27 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mtiwmhc02.worldnet.att.net (mtiwmhc02.worldnet.att.net [204.127.131.37]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id MAA21706 for ; Sat, 6 Jun 1998 12:03:23 -0700 (PDT) Received: from LOCALNAME ([12.65.208.202]) by mtiwmhc02.worldnet.att.net (InterMail v03.02.03 118 118 102) with SMTP id <19980606190228.CKVT12198@LOCALNAME>; Sat, 6 Jun 1998 19:02:28 +0000 X-Sender: ebjr@postoffice.worldnet.att.net X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: "User Rdkeys Robert D. Keys" , glowbugs@piobaire.mines.uidaho.edu From: Sandy W5TVW Subject: Re: GB> Regen. RX Bib. -- if you must. Message-Id: <19980606190228.CKVT12198@LOCALNAME> Date: Sat, 6 Jun 1998 19:02:28 +0000 Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO At 03:24 PM 6/6/98 -0400, you wrote: >> I still think using a straight regenerative RX on the bands is illegal because >> of the QRM, but if you insist on doing it, instead of building a proper >> regenerative suberhet to the memory of the immortal Frank Jones, know of >> Lindsay's resources: > >It has been my experiences over the years that IFF you build a proper >regenerative receiver, you get no radiation sufficient to be heard more >than a couple of hundred feet away, at absolute worst. In my book, that >is nil QRM. Part 15 devices radiate much more. > >DE NA4G/Bob UP > Bob is 100% right here! If you have a ham next door and you operate the same bands, you *might* piss him off, otherwise...forget it! You *may* be heard by some rabid DX hound looking in the noise for rare ones on a quiet night across town, but the chances of getting struck by lightning are just as risky! ;^) 73, Sandy W5TVW From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 6 17:38:48 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id RAA01526 for ; Sat, 6 Jun 1998 17:38:45 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id RAA26296 for ; Sat, 6 Jun 1998 17:39:25 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id OAA22520 for glowbugs-outgoing; Sat, 6 Jun 1998 14:12:59 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from admin.aurora.edu (admin.aurora.edu [192.203.224.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id OAA22514 for ; Sat, 6 Jun 1998 14:12:55 -0700 (PDT) Received: from localhost (broehrig@localhost) by admin.aurora.edu (8.8.8/8.8.8) with SMTP id QAA27344; Sat, 6 Jun 1998 16:09:05 -0500 Date: Sat, 6 Jun 1998 16:09:05 -0500 (CDT) From: Bob Roehrig To: Bill Hawkins cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Phase angle and resonance In-Reply-To: <199806061623.LAA17010@citrus.iaxs.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On Sat, 6 Jun 1998, Bill Hawkins wrote: > Work continues on a tube TRF for reception of WWVB at 60 KHz. I'm > about to wind a square loop antenna for it, to go in the attic. > Most of the stuff I've seen uses a resonating capacitor across the > loop winding, reasonable because it's fixed frequency. But the > reason to receive WWVB is to make sensitive time comparisons with > a local frequency standard. This means that the phase of the > antenna signal relative to the phase of the WWVB ground signal > must remain constant, else you don't know who is drifting. > Seems to me that mechanical resonant systems have a phase shift > between input and output that changes most rapidly at resonance. Yes, the phase does change if either the C or L changes so it would "drift" with temperature changes, but hard to tell how much. A lot would depend on the Q of the loop. I just took my amplified ferrite rod tuned 60 kHz antenna (with regen) and ran a quickie test. At resonance the phase difference is zero. At about the 6dB point, it looks like there is about 45 degrees of phase shift as I swing the frequency up, and 45 degrees the other way going down in freq. Beyond this point the phase shift is only a few more degrees. The question might be - would the temp variations affecting the antenna change the phase more than the path changes change the actual received phase. At 60 kHz you need to do long term comparisons anyway, and any phase drift will eventually cancel out anyhow. The old H-P VLF-117A system uses a resonant loop and they didn't worry about it. You could try the antenna inside the house first at a constant temp then see what it does in the attic environment. Here, I see very little difference in received strength if the antenna is in the basement just at ground level or 30 feet up on my tower. "Nostalgia is a thing of the past" E-mail broehrig@admin.aurora.edu 73 de Bob, K9EUI CIS: Data / Telecom Aurora University, Aurora, IL 630-844-4898 Fax 630-844-5530 From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 6 18:17:07 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id SAA01549 for ; Sat, 6 Jun 1998 18:17:07 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id SAA23176 for ; Sat, 6 Jun 1998 18:17:47 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id OAA23039 for glowbugs-outgoing; Sat, 6 Jun 1998 14:55:20 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id OAA23033; Sat, 6 Jun 1998 14:55:16 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Sat, 6 Jun 1998 14:55:16 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: MNHopkins@aol.com cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Radiating Regens -- don't kid me In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > Several have written to the point that a "properly built," or "modern (sic)" > or some other superqualified type of booper regenerative receiver does not > have "objectionable" radiation on the band at the frequency to which it is > turned. > > Come on, folks, they made too much noise for the Navy in the '20s and some, > indeed many, are building them again on cakepans and such. I freely agree > that the problem can be defeated. Charles Kitchin, in his Olympic treatment > of the subject on Communications Quarterly in 1995 sums it up -- use a RF amp > in front of the regenerative stage. He also shows how the throttle capacitor > method of regeneration control is best, just like C.F Rockey knew and told in > his book. > > The problem with this thread is that many out there are puttng anachronisms > from various sounces on the air in search of yesterday or youth or whatever. > These atavism can and do cause objectionable QRM. Even 10mW can work several > states away, as one posting and Chuck Adams, K5FO, the QRP-L list guru never > runs more than 900mW. Indeed, new RFI standards in Great Britain may even > obviate use of direct conversion RXs -- far cleaner beasts than a blooper. Unless you have taken a "blooper", set it side by side with a DC receiver and measured the output under identical conditions, the above statement is only your opinion, apparently not backed up by fact. > > The regenerative detector was and is one of Armstrong's greatest feats. I > love them and use them behind converters or IF cans where their versitility is > useful, but not straight into a voltage fed antenna. > As I said: have YOU tried it or are you just quoting someone else? If you haven't tried it, you are not an authority. There are too many variables in the equation to say that one "solution" fits all... Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 7 13:58:25 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id NAA02164 for ; Sun, 7 Jun 1998 13:58:23 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id NAA19906 for ; Sun, 7 Jun 1998 13:59:17 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA02977 for glowbugs-outgoing; Sun, 7 Jun 1998 10:33:03 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id KAA02971 for ; Sun, 7 Jun 1998 10:33:00 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id RAA12779; Sun, 7 Jun 1998 17:28:51 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806072128.RAA12779@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> Regen. RX Bib. -- if you must. In-Reply-To: <199806061814.NAA18735@okcforum.org> from Jim Glover at "Jun 6, 98 01:14:17 pm" To: psykey@okcforum.org (Jim Glover) Date: Sun, 7 Jun 1998 17:28:51 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > > > > It has been my experiences over the years that IFF you build a proper > > regenerative receiver, you get no radiation sufficient to be heard more > > than a couple of hundred feet away, at absolute worst. In my book, that > > is nil QRM. Part 15 devices radiate much more. > > > > DE NA4G/Bob UP > > > > So Bob... > > What're the essentials of making a regenerative receiver "proper" in > this respect? Would a one-tube, single-stager with the TINY tuning > cap you recommend, and loose antenna coupling (I plan to start by > trying a single turn around the tank coil, at about twice the tank > coil's diameter) be sufficient? Or would one really need that > separate RF stage to reduce radiation to the levels you describe? > > Thanks! > --Jim WB5UDE There are several things to consider. 1. Most important is operating loosely coupled. The regen detector has a great sensitivity, and does not need the usual overloading coupling that many folks in the past used. Experiments were done in the 20's by several hams, that indicated that coupling as little as 12 inches, between coils was entirely satisfactory in many applications using a tuner followed by a detector and one-step audio. In my hands, a single turn link to a low impedance antenna, spaced an inch or so makes a good link coupling system. For capacitive coupling into the top of the tuning tank a pair of aluminum plates spaced 1/8 to 1/4 inch and only of 1/2 square inch surface is more than sufficent to overcouple to the detector on a short random wire. My guess is that is around 1 pf (someone may compute that if they want, I don't have the formulas in my head). 2. Secondly, operate a low plate voltages. I find no need to run any regen detector over 48vdc. Running them at 250vdc, unless a pentode, is unnecessary. Even pentodes run very well at 12vdc plate. The less plate input, the less radation. I run pentode and triodes at 36v most of the time, loosely coupled. Figuring a half ma of plate current in the detector, and a coupling efficiency of maybe 10 percent max, at 36 volts, that amounts to 0.1 x 36 x 0.0005 = 1.8mw radiated power. That is pretty small, even on a good antenna. The coupling efficiency is probably around 1 percent, so that may be lower than 0.2 milliwatts radiated power. For reference, the RAL, among the best of the regen sets, has a pentode detector running at 90 volts on the plate and 19 volts on the screen. It is well shielded though, so it is extremely difficult to hear the detector on an R390 on a full antenna, wide open, with the RAL oscillating and hooked up to the same antenna. 3. Use a small antenna. I often use NO antenna at all on local rag chews, and for 1AW reception, only a few feet of cliplead suffices nicely. Fred Sutter once did an article in QST on the virtues of using a 12 inch antenna on a regen set. I heartily concur with his findings, in my sets. 4. If picky, shield the detector to help reduce stray radiation. Under worst case on a 6J5 single tuber detector, tightly coupled with a 3 turn link into the main antenna, at 67.5 plate volts, can barely be heard on a TenTec Omni with a full wave loop antenna, at about 300 yards distant. That is horribly overcoupled. When properly uncoupled, it is not heard on the same station (a local that I rag with quite often). In your particular case, if you made the link variable, that would be fine. An RF stage would not be required. You should be able to hear the detector in your own shack, but not down the street. Start at around 2 inches of coupling distance. The link can be the same size as the tank coil, and is best coupled to the low impedance end (ground end) of the tank coil. A good way to do that is to wind the coils so they are horizontal, and adjust the spacing that way. Alternatively, wind the link so that you have at least 1 inch of space on your form, and use it that way. Good Luck Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 7 14:16:39 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id OAA02178 for ; Sun, 7 Jun 1998 14:16:36 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id OAA28740 for ; Sun, 7 Jun 1998 14:17:31 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA03506 for glowbugs-outgoing; Sun, 7 Jun 1998 10:55:14 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id KAA03501 for ; Sun, 7 Jun 1998 10:55:10 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id RAA12810; Sun, 7 Jun 1998 17:51:03 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806072151.RAA12810@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> Radiating Regens -- don't kid me --- no need to. In-Reply-To: from "MNHopkins@aol.com" at "Jun 6, 98 02:23:52 pm" To: MNHopkins@aol.com Date: Sun, 7 Jun 1998 17:51:02 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > Several have written to the point that a "properly built," or "modern (sic)" > or some other superqualified type of booper regenerative receiver does not > have "objectionable" radiation on the band at the frequency to which it is > turned. > > Come on, folks, they made too much noise for the Navy in the '20s and some, Not so. The navy was using them through WWII, and as late as the Cuban Missle fracas on submarines (I have a good friend that was still using them on his boat in the Florida Straits). There was a general trend to add RF stages to them in the 30's, about 1936, when RCA designed the last of the Navy's regens. RMCA was still building them in the 60's, and ITT was still building them as late as the early 70's for commercial marine use. Regens tended to radiate less than superhets, in the WWII era, and one of the giveaways of ships to prowling subs off the Atlantic coast was superhet radiation from the 455 khz oscillators and the front end conversion oscillators. National went to great lengths to add additional 2nd RF stages and shielding to the NC-100 series receivers before the Navy would use them as standard shipboard receivers. > indeed many, are building them again on cakepans and such. I freely agree > that the problem can be defeated. Charles Kitchin, in his Olympic treatment > of the subject on Communications Quarterly in 1995 sums it up -- use a RF amp > in front of the regenerative stage. He also shows how the throttle capacitor > method of regeneration control is best, just like C.F Rockey knew and told in > his book. Sounds like what I have been saying over the years, too.... throttle control is much better than anything else. > The problem with this thread is that many out there are puttng anachronisms > from various sounces on the air in search of yesterday or youth or whatever. > These atavism can and do cause objectionable QRM. Even 10mW can work several > states away, as one posting and Chuck Adams, K5FO, the QRP-L list guru never > runs more than 900mW. Indeed, new RFI standards in Great Britain may even > obviate use of direct conversion RXs -- far cleaner beasts than a blooper. I build and use them for the fun of it, like most of us here. I know Chuck, and have great respect for his work. Come measure mine sometime then...... Funny, in 25 years of running these things, and about the same amount of time on Hartley oscillators and related brethren, noone has ever complained about it on the air, locals or otherwise. A direct coversion rx will usually have a significant amount of harmonic content in its oscillator. I would expect that to be more than in a proper regen detector. A direct conversion receiver can be a very good receiver. One of the best examples ever designed was RCA's RBA Navy receiver. That makes modern play direct conversion receivers look like toys. Also, a direct conversion oscillator tends to oscillate with more power than a regenerative detector does, hence radiating more, if allowed to radiate directly into the antenna, than a regenerative detector. > The regenerative detector was and is one of Armstrong's greatest feats. I > love them and use them behind converters or IF cans where their versitility is > useful, but not straight into a voltage fed antenna. If you are using them straight into a voltage fed antenna, you are probably overcoupling them. In my hands, any antenna over about 10 feet length will require special uncoupling (more so that traditionally used in the typical early ham articles) to keep from overrunning the detectors. > 73 de ab5L, michael in dallas, student of Tecraft and International (ICM) ham > products and mementoes of Six Meters' Golden Age: 1957-58 > Michael Hopkins > Box 226841 > Dallas, TX 75222 MNHopkins@AOL.com Good discussion, though. DE NA4G/Bob UP From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 7 14:31:34 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id OAA02190 for ; Sun, 7 Jun 1998 14:31:34 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id OAA30332 for ; Sun, 7 Jun 1998 14:32:28 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id LAA03765 for glowbugs-outgoing; Sun, 7 Jun 1998 11:10:46 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from imo24.mx.aol.com (imo24.mx.aol.com [198.81.17.68]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id LAA03760 for ; Sun, 7 Jun 1998 11:10:43 -0700 (PDT) From: EWoodman@aol.com Received: from EWoodman@aol.com by imo24.mx.aol.com (IMOv14_b1.1) id PERGa22587 for ; Sun, 7 Jun 1998 14:09:50 -0400 (EDT) Message-ID: <48e5b910.357ad770@aol.com> Date: Sun, 7 Jun 1998 14:09:50 EDT To: glowbugs@piobaire.mines.uidaho.edu Mime-Version: 1.0 Subject: GB> Old QST'S Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit X-Mailer: AOL 3.0 for Windows 95 sub 64 Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I've just acquired something that's a great resource for all this "glowbuggy" and BA stuff. Yesterday I talked myself into parting with $39.95 and picked up a set of CD's at the local ham radio store. ( I'm lucky in having a place that's about 15 min. from the house). The CD's include scanned images of all the QST issues from 1950 thru '59. There is an index and search function that enables you to search for keywords in all the article titles. You can also just browse an issue by paging through it. Each issue is there in its entirety...........front and back covers, all the ads, etc. The scans are very good quality. I believe that they are now available back to 1930, although the store didn't have the older ones in stock yet. Can't wait to get my hands on THAT set! For those of us who have always wanted to have all the old back issues but would never be able to find/afford them ( or have a place to store them even if we did find them!), this is really great. Even the ads can be useful. Just as an example I found an ad for UTC audio interstage transformers. All the model numbers were listed along with the corresponding impedance ratios, etc. A great page to print out and keep for reference. Just thought I'd pass this along in case any of you might be thinking about getting a set. 73 ERIC KA1YRV From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 7 16:19:36 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id QAA02244 for ; Sun, 7 Jun 1998 16:19:35 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id QAA00103 for ; Sun, 7 Jun 1998 16:20:30 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA04903 for glowbugs-outgoing; Sun, 7 Jun 1998 12:57:10 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from koto.qnet.com (mta@koto.qnet.com [207.155.37.7]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id MAA04897 for ; Sun, 7 Jun 1998 12:57:06 -0700 (PDT) Date: Sun, 7 Jun 1998 12:57:06 -0700 (PDT) Message-Id: <199806071957.MAA04897@piobaire.mines.uidaho.edu> Received: from k56-palm-01-15.ca.qnet.com (k56-palm-00-17.ca.qnet.com [207.155.33.49]) by koto.qnet.com (Post.Office MTA v3.1.2 release (PO203-101c) ID# 0-51823U600L2S100V35) with SMTP id AAA991; Sun, 7 Jun 1998 12:56:36 -0700 X-Sender: jmc@pop3.av.qnet.com X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: glowbugs@piobaire.mines.uidaho.edu From: JMcAulay Subject: Re: GB> Radiating Regens -- don't kid me Cc: MNHopkins@aol.com Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO At 02:23 PM 6/6/98 EDT, you wrote: >Several have written to the point that a "properly built," or "modern (sic)" >or some other superqualified type of booper regenerative receiver does not >have "objectionable" radiation on the band at the frequency to which it is >turned. > >Come on, folks, they made too much noise for the Navy in the '20s and some, >indeed many, are building them again on cakepans and such. I freely agree >that the problem can be defeated. Charles Kitchin, in his Olympic treatment >of the subject on Communications Quarterly in 1995 sums it up -- use a RF amp >in front of the regenerative stage. He also shows how the throttle capacitor >method of regeneration control is best, just like C.F Rockey knew and told in >his book. > >The problem with this thread is that many out there are puttng anachronisms >from various sounces on the air in search of yesterday or youth or whatever. >These atavism can and do cause objectionable QRM. Even 10mW can work several >states away, as one posting and Chuck Adams, K5FO, the QRP-L list guru never >runs more than 900mW. Indeed, new RFI standards in Great Britain may even >obviate use of direct conversion RXs -- far cleaner beasts than a blooper. > >The regenerative detector was and is one of Armstrong's greatest feats. I >love them and use them behind converters or IF cans where their versitility is >useful, but not straight into a voltage fed antenna. > Hi, Michael: As usual, you make some strong and good points. However, you stated in an earlier post that you feel the use of a directly-connected-to-the-antenna regenarative detector is "illegal." Any such illegality would likely stem from 47 USC 302a, in which the FCC is granted the power to regulate interference to electronic communications. The FCC, in turn, gives us 47 CFR 15, the renowned "Part 15," which includes section 15.23, titled "Home Built Devices." This basically says the Commission recognizes that home builders do not generally have a full stable of measuring equipment, so they'll be expected to use good engineering design and all that sort of stuff, but they won't be held responsible for total and precise compliance as would a commercial builder. That section also refers one to section 15.5, which is titled "General conditions of operation," which in turn basically says that your device does not have any priority for use of its frequency, it must cause no harmful interference, it must accept any interference caused by anything authorized by the Commission -- including another incidental radiator -- and that you must cease operation upon notification *by a Commission representative* that the device is causing harmful interference. Note a couple of things: it's okay to run the device unless it causes *harmful* interference (interference which may be real, but is negligible and therefore not harmful, is not a problem); also, even if your device is causing all kinds of intereference, it would appear that you could legally display a tendency to be a total as**ole and refuse to shut down until you are told to do so by the FCC, not just when asked nicely by that poor schlep who can't talk to aunt Minnie on his cordless 'phone because you insist on running your 833A regenerator with 2.5 kv on the anode. Oh, yeah, that same section 15.5 totally prohibits incidental radiation of type B emissions (damped waves, AKA spark). So those of you who'd like to fire up that old rotary gap machine in the back room, fair warning: you'd have to shield it so well that it can't be heard three meters away from the thing. Another "by the way": it appears that while the FCC still stipulates the requirement for regulation of conducted interference (into the power line) below 30 MHz for an incidental radiation device, there is no longer a requirement stated for radiated interference in that frequency area. Anyway, it would seem that operating a directly-coupled regenerator is not intrinsically against the law, but you may be asked to shut it down -- either to fix it or permanently -- if your little super-performing nostalgic goodie fails to be a good neighbor. If you choose not to build one due to the fact that it just *might* cause someone to yell "QRM!" then by all means, hold off. Your philosophy may vary. 73 John WA6QPL From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 7 16:28:09 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id QAA02254 for ; Sun, 7 Jun 1998 16:28:09 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id QAA03596 for ; Sun, 7 Jun 1998 16:29:06 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id NAA05025 for glowbugs-outgoing; Sun, 7 Jun 1998 13:07:29 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from koto.qnet.com (mta@koto.qnet.com [207.155.37.7]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id NAA05020 for ; Sun, 7 Jun 1998 13:07:25 -0700 (PDT) Date: Sun, 7 Jun 1998 13:07:25 -0700 (PDT) Message-Id: <199806072007.NAA05020@piobaire.mines.uidaho.edu> Received: from k56-palm-01-15.ca.qnet.com (k56-palm-00-17.ca.qnet.com [207.155.33.49]) by koto.qnet.com (Post.Office MTA v3.1.2 release (PO203-101c) ID# 0-51823U600L2S100V35) with SMTP id AAA1273; Sun, 7 Jun 1998 13:06:56 -0700 X-Sender: jmc@pop3.av.qnet.com (Unverified) X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: glowbugs@piobaire.mines.uidaho.edu From: JMcAulay Subject: Re: GB> Radiating Regens -- don't kid me Cc: MNHopkins@aol.com Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Michael and all: One other thing I should have mentioned in that last one: FCC section 15.209 shows the maximum radiation for an *intentional* radiating device in the HF arena to be 30 microvolts at 30 meters distance. That should be the absolute ceiling you'd have to be concerned about. Sorry this one crept out of the last message. 73 John WA6QPL \l/ (o o) -------------------------ooO-(_)-Ooo-------------------------- ******************************************************************* * * * Old age and treachery will always triumph over youth and skill. * * * ******************************************************************* From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 7 21:40:58 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id VAA02411 for ; Sun, 7 Jun 1998 21:40:58 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id VAA16249 for ; Sun, 7 Jun 1998 21:41:59 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id SAA07115 for glowbugs-outgoing; Sun, 7 Jun 1998 18:08:44 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from Rt66.com (mack.rt66.com [198.59.162.1]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id SAA07110 for ; Sun, 7 Jun 1998 18:08:40 -0700 (PDT) From: msix@rt66.com Received: from localhost (msix@localhost) by Rt66.com (8.8.7/8.8.6) with SMTP id TAA09883; Sun, 7 Jun 1998 19:05:29 -0600 (MDT) Date: Sun, 7 Jun 1998 19:05:28 -0600 (MDT) To: hallicrafters@qth.net cc: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Re: Xtals In-Reply-To: <01bd919d$1946b840$3ad9c2d0@default> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Best source I ever found is: Bruce at K W Mfg Box 508 Prague, OK 74864 405-567-2285 Very good, very reasonable. None below 1MHz, tho... Bruce doesn't know HTs from HXs - you have to tell him what you want. Steve - for the HT-32, tell Bruce 32.000MHz, overtone, 32pF, standard tolerance, HC-6 holder with pins. 73 - John W7ZFB at msix@rt66.com 1400 Catron SE Albq, NM 87123 *********************************************************** * Homebrewer since 1947 CW BoatAnchors Norcal #930 * * Want Halli SR150/400/2000 Xcvrs, dead or alive * * Want Elmac PMR-7 Receiver * *********************************************************** From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 8 07:08:34 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id HAA02692 for ; Mon, 8 Jun 1998 07:08:33 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id HAA10609 for ; Mon, 8 Jun 1998 07:09:35 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id DAA12324 for glowbugs-outgoing; Mon, 8 Jun 1998 03:47:47 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from ms1.nwla.com (root@[207.22.207.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id DAA12319 for ; Mon, 8 Jun 1998 03:47:40 -0700 (PDT) From: w5sum@ms1.nwla.com Received: from w5sum.nwla.com (ppp16.nwla.com [207.22.207.30]) by ms1.nwla.com (8.7.5/8.7.3) with SMTP id FAA00357; Mon, 8 Jun 1998 05:47:28 -0500 Message-Id: <199806081047.FAA00357@ms1.nwla.com> To: boatanchors@theporch.com Date: Mon, 8 Jun 1998 05:52:32 +0000 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: GB> Johnson Paint CC: glowbugs@piobaire.mines.uidaho.edu, baswaplist@foothill.net, johnson@qth.net Priority: normal Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO morning worshippers of the glowing glass! I need to know where to buy a quart or so of the johnson Maroon paint. I know have 2 rangers and 2 valiants and a thunderbolt in need of paint!!LOL and, is there ANYONE out there doing silkscreening for the front panels for Rangers and Valiants? Ronnie W5SUM - Ronnie Hull PO Box 8941 Shreveport, La 71148 From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 8 08:34:52 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id IAA02736 for ; Mon, 8 Jun 1998 08:34:51 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id IAA12370 for ; Mon, 8 Jun 1998 08:35:59 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id FAA13236 for glowbugs-outgoing; Mon, 8 Jun 1998 05:09:54 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail1.monumental.com (mail1.mnsinc.com [206.55.3.18]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id FAA13231 for ; Mon, 8 Jun 1998 05:09:46 -0700 (PDT) Received: from COMPUTER (bry.mnsinc.com [206.239.150.65]) by mail1.monumental.com (8.8.8/8.8.8) with SMTP id IAA26687; Mon, 8 Jun 1998 08:05:37 -0400 (EDT) Message-Id: <199806081205.IAA26687@mail1.monumental.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: dcboatanchors@qth.net, BOATANCHORS@LISTSERV.TEMPE.GOV Date: Mon, 8 Jun 1998 08:02:00 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: GB> (Fwd) 19 inch rack standard? Reply-to: bry@mnsinc.com CC: glowbugs@piobaire.mines.uidaho.edu, woodward@omen.net.au Priority: normal X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Anyone have any clues on this that we could pass along to Clive? (Polite ones please! :-) ------- Forwarded Message Follows ------- Date: Mon, 08 Jun 1998 To: uk-vintage-radio@webaware.co.uk From: Clive Woodward Subject: 19 inch rack standard? Gudday Vintage Fans, For many years I've pondered the origins of the 19 inch equipment rack standard and perhaps this is the forum to seek answers... Yeh, the fundamental measurement - where did they come up with 19 inches as a size? It's not a neat metric figure (482mm) nor a neat imperial figure (why not 18 (half a yard) or 20 inches?). Once one gets into the vertical sizes it gets worse. One unit = one and three quarter inches? Does anyone have any ideas here? Any dates - I think we're in the region between the two world Wars? All suggerstions greatfully received :-) Cheers, Clive. _____________________________________________________________________ . Clive Woodward _/- /_|\ PO Box 74 .~ | \ Applecross WA 6953 \ WA| \ AUSTRALIA => *_.-.._ / "-" Phone +61 8 9364 3293 V email woodward@omen.net.au "Help stamp out, eliminate, and abolish redundancy." "Astralia - Land of Sunshine and Sharks!" ______________________________________________________________________ **************************************************** *** 73 from Radio AF4K/G3XLQ Gaithersburg, MD USA * ** E-mail to: bry@mnsinc.com * *** ICQ 6124470 *** ** http://www.mnsinc.com/bry/ * **************************************************** AM International #1024, TENTEN #13582. GRID FM19. Rigs: Valiant, DX-60/HG-10, FT-840, TM-261A, Harvey Wells Bandmaster, Drake 2 C. TEN-TEN #13582, DXCC #17763, Bicentennial WAS From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 8 09:52:30 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id JAA02817 for ; Mon, 8 Jun 1998 09:52:30 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id JAA16529 for ; Mon, 8 Jun 1998 09:53:40 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id GAA13705 for glowbugs-outgoing; Mon, 8 Jun 1998 06:28:02 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from els.imed.com (imed.com [192.246.2.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id GAA13700 for ; Mon, 8 Jun 1998 06:27:56 -0700 (PDT) Received: from mails.imed.com by els.imed.com with SMTP (1.38.193.5/15.6) id AA21786; Mon, 8 Jun 1998 08:27:01 -0500 Received: from ccMail by mails.imed.com (IMA Internet Exchange 2.1 Enterprise) id 000B8FF2; Mon, 8 Jun 98 08:25:14 -0600 Mime-Version: 1.0 Date: Mon, 8 Jun 1998 08:22:01 -0600 Message-Id: <000B8FF2.@mails.imed.com> From: mack@mails.imed.com (Ray Mack) Subject: Re: GB> (Fwd) 19 inch rack standard? To: BOATANCHORS@LISTSERV.TEMPE.GOV Cc: glowbugs@piobaire.mines.uidaho.edu Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Description: cc:Mail note part Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Actually, it *does* fit an imperial figure. If you allow 0.5 inches of clearance on each side for the mounting holes, you end up with 18 inches between the holes for the sparky bits. Just a guess. The same probably applies to the vertical distance. The holes are probably an even number of 0.25 inches (I never actaully measured one!) and the height probably gives enough space above and below for good mechanical strength with 4 screws in the panel. Another guess is that you need a minimum height to lessen the bending moment on the front panel. Racks are meant to hold things that are quite deep behind the panel. My guess on the origin would have to be Western Electric. They are probably the most likely to have the kind of clout to set such an unusual standard. Ray Mack WD5IFS mack@mails.imed.com Friendswood, TX ______________________________ Reply Separator _________________________________ Subject: GB> (Fwd) 19 inch rack standard? For many years I've pondered the origins of the 19 inch equipment rack standard and perhaps this is the forum to seek answers... Yeh, the fundamental measurement - where did they come up with 19 inches as a size? It's not a neat metric figure (482mm) nor a neat imperial figure (why not 18 (half a yard) or 20 inches?). Once one gets into the vertical sizes it gets worse. One unit = one and three quarter inches? Does anyone have any ideas here? Any dates - I think we're in the region between the two world Wars? From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 8 10:31:12 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id KAA02847 for ; Mon, 8 Jun 1998 10:31:12 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id KAA27505 for ; Mon, 8 Jun 1998 10:32:22 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA14042 for glowbugs-outgoing; Mon, 8 Jun 1998 07:05:30 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id HAA14035 for ; Mon, 8 Jun 1998 07:05:21 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id OAA14030; Mon, 8 Jun 1998 14:01:21 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806081801.OAA14030@seedlab1.cropsci.ncsu.edu> Subject: GB> Vintage FD this weekend... how many Glowbuggeites be there? To: glowbugs@piobaire.mines.uidaho.edu Date: Mon, 8 Jun 1998 14:01:21 -0400 (EDT) Cc: rdkeys@seedlab1.cropsci.ncsu.edu (User RDKEYS Robert D. Keys) X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Well, this weekend (13th-14th) is the Vintage FD 98 run. 7pm-7pm Sat/Sun. I was wondering how many of the Glowbugge Crewe will be about, and who will be running what? I will be on 80M, and will fire up Grandma Hartley and the '25 detector and one step. I ought to be able to work anyone east of the Big Muddy, but dunno about farther out. So, who's on second and what's ya gonna run on third? Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 8 10:58:18 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id KAA02877 for ; Mon, 8 Jun 1998 10:58:13 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id KAA00363 for ; Mon, 8 Jun 1998 10:59:23 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA14319 for glowbugs-outgoing; Mon, 8 Jun 1998 07:24:57 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from radiate.indy.net (radiate.indy.net [199.3.65.253]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id HAA14310 for ; Mon, 8 Jun 1998 07:24:44 -0700 (PDT) Received: from indy2.indy.net (root@indy2.indy.net [199.3.65.7]) by radiate.indy.net (8.8.7/8.8.7) with ESMTP id JAA18042; Mon, 8 Jun 1998 09:25:45 -0500 (EST) Received: from localhost (rbarmore@localhost [127.0.0.1]) by indy2.indy.net (8.8.7/8.8.7) with SMTP id JAA04465; Mon, 8 Jun 1998 09:25:44 -0500 (EST) Date: Mon, 8 Jun 1998 09:25:42 -0500 (EST) From: "Roberta J. Barmore" X-Sender: rbarmore@indy2 To: Ray Mack cc: BOATANCHORS@LISTSERV.TEMPE.GOV, glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> (Fwd) 19 inch rack standard? In-Reply-To: <000B8FF2.@mails.imed.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Hi! The 19" wide rack panel does indeed come from The Phone Company, as near as I can find out, and dates back to the late '20s at least. The odd increments of height (1.75" and multiples) is a mystery and a deeper one than it might seem at first sight, as the plainest standard telephone-type rackmounting patch panels are *not* built in heights evenly divisible by 1.75"! (In the BC biz, we used "jack mats," false fronts that built out the height to a standard increment, and nowadays, they simply make the panels in standard dimensions). There are other standards, too--there's a 24"-wide "Western Union" rack and cabinet-mounted phasing equipment for AM directional arrays was often built in a rack using 48" panel width. But the 19" type is the most common. ...Some interesting guesses; ~38" is about as wide a reach as one person can do useful work within, seated in a fixed position, and 57" is pretty much the limit even with a rolling chair. So the width works out well for operating positions for telephone operators. *And* the good folks at Bell were among the very first to use human-factors engineering principles. But I can't back that up with anything. It's just speculation. A standard rack (typically 7' high) is also about as small a place as a person can get into and work on stuff. While *most* of Bell's stuff used open-frame racks (no side walls), this could have been a governing dimension. Quick trivia--rack panels are actually 1/32" undersized on height, to allow for manufacturing tolerances, and there are two standards for placement and spacing of the mounting holes, WeCo and EIA. A WeCo rack has the tapped holes in pairs--two close, a wide gap, two close--while the EIA one have equal dimensions. Many racks now have "universal" tappings on the rails--two close holes, a middling gap, a hole, a middling gap, two close, and so on. It's handy but confusing--you have to remember to count three holes for every 1.75" spacing. (I cheat, with low-tack blue masking tape down the front beside the rail and the positions for gear to be installed measured and marked on it; that way, you can install a few things and have 'em in the right places when you install the rest of the gear. When done, you peel off the tape and people think you're a magician). 10-32 tappings are the most common but some older racks used 12-24, especially if heavy equipment was to be mounted (RCA and Collins were fond of 'em for BC gear). Some light-duty racks had 8-32, while the British Empire seems to have favored 1/4" Whitworth hardware (yet, often, kept the 19" width--this was before such things as metricification and decimal coinage). (Odder still, there's a BA bolt so close to 10-32 as to be interchangeable!) (2BA) (Umm, this usually bears mention--US thread sizes are generally given as "stud size" - "threads per inch [pitch]," so a 12-24 is both bigger around and coarser of thread than a 10-32; British Association sizes are sort of like wire sizes, the bigger the number the smaller the bolt, while Whitworth sizes are *very* roughly the major diameter). 73, --Bobbi KB9GKX "RJ" rbarmore@indy.net Roberta J. (Bobbi) Barmore FISTS #3388 * G-QRP #10001 * ARRL * RSGB * WIA Appreciator Of Vacuum-Tube Ham Gear and Vintage Keys From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 8 11:07:18 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id LAA02887 for ; Mon, 8 Jun 1998 11:07:17 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id LAA00077 for ; Mon, 8 Jun 1998 11:08:28 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA14591 for glowbugs-outgoing; Mon, 8 Jun 1998 07:37:18 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from pacs05.infoave.net (20A1EB33@pacs05.InfoAve.Net [165.166.0.15]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id HAA14585 for ; Mon, 8 Jun 1998 07:37:11 -0700 (PDT) Received: from tetrode ("port 4347"@[149.149.42.10]) by InfoAve.Net (PMDF V5.1-10 #23426) with SMTP id <01IXZOCSKOR8936UTK@InfoAve.Net> for glowbugs@piobaire.mines.uidaho.edu; Mon, 8 Jun 1998 10:34:14 EDT Date: Mon, 08 Jun 1998 09:33:08 -0500 From: Conard Murray WS4S Subject: Re: GB> Vintage FD this weekend... how many Glowbuggeites be there? To: User Rdkeys Robert D Keys , glowbugs@piobaire.mines.uidaho.edu Cc: User RDKEYS Robert D Keys Message-id: <016201bd92ea$5c3dd2c0$0a2a9595@tetrode.ece.tntech.edu> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 4.72.2106.4 Content-type: text/plain; charset="iso-8859-1" Content-transfer-encoding: 7bit X-MSMail-Priority: Normal X-Mimeole: Produced By Microsoft MimeOLE V4.72.2106.4 X-Priority: 3 Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I will try to get on 80 and 40 around 9:00 Central running the TCS and the SP-600. So Bob, are you going to take the stuff portable or operate out of the shack? I think I would be inclined to haul the TCS out to the rifle range I have been spending Saturdays at lately and give it a try from the field if there would be some activity. ZUT! Conard From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 8 11:55:57 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id LAA02925 for ; Mon, 8 Jun 1998 11:55:57 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id LAA06423 for ; Mon, 8 Jun 1998 11:57:07 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA15400 for glowbugs-outgoing; Mon, 8 Jun 1998 08:22:10 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id IAA15391 for ; Mon, 8 Jun 1998 08:22:00 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id PAA00310; Mon, 8 Jun 1998 15:17:55 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806081917.PAA00310@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> Vintage FD this weekend... how many Glowbuggeites be there? In-Reply-To: <016201bd92ea$5c3dd2c0$0a2a9595@tetrode.ece.tntech.edu> from Conard Murray WS4S at "Jun 8, 98 09:33:08 am" To: ws4s@INFOAVE.NET (Conard Murray WS4S) Date: Mon, 8 Jun 1998 15:17:55 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > I will try to get on 80 and 40 around 9:00 Central running the TCS and the > SP-600. So Bob, are you going to take the stuff portable or operate out of > the shack? I think I would be inclined to haul the TCS out to the rifle > range I have been spending Saturdays at lately and give it a try from the > field if there would be some activity. > ZUT! > Conard I will have a park bench about a block away from the QTH, where I can put up a 66up and 66out traditional antenna, and will have batteries to run the mg set off of (and they will last about 12 hours or so). I will consider it fine if I can make half a dozen QSO's, although on the AWA 1929 party I can usually muster up around 25 QSO's in the winter. It has been very cool here down east, so the propagation may be good for a few more days. I could mount a BC-375 and BC-348 up in the car, or an ARC-5, or maybe the GRC/9, but I favor the Hartley and Detector and One-Step, for 1933 flavor. On the ARRL FD, I will probably be running Big Bertha Radiomarine, or the AN/SRT-14 (provided I don't get a hernia!) with the R/388 and R-390A. W4TIM and I had wanted to run a Mackay 167B, but I don't think it will be ready by then. This is neat stuff.... two FD's in the same month to run BA/GB gear on! One is fun, for play, and the other a run for the guildern de realme. What is the official vintage FD call? That was not clear in the posts. I would think something like CQ VFD would be fairly good. ZUT DE NA4G/Bob UP From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 8 12:11:56 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id MAA02970 for ; Mon, 8 Jun 1998 12:11:55 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id MAA31374 for ; Mon, 8 Jun 1998 12:13:07 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA15651 for glowbugs-outgoing; Mon, 8 Jun 1998 08:34:25 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id IAA15644 for ; Mon, 8 Jun 1998 08:34:14 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id PAA00340; Mon, 8 Jun 1998 15:30:09 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806081930.PAA00340@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> Vintage FD this weekend... how many Glowbuggeites be there? In-Reply-To: <3.0.5.32.19980608071800.007f35b0@mail.ca.jps.net> from Adam McLaughlin at "Jun 8, 98 07:18:00 am" To: kd6poc@jps.net (Adam McLaughlin) Date: Mon, 8 Jun 1998 15:30:09 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > I am going to go with Dick Dillman and Tracy Reese to Novato to operate > somy angry 9s, powered by human power, of course! > > Adam > "We are the dreamers, and we are the music makers" Dream, dream, dream, and then DO it!...... yeah! Sounds like a winner. Bring plenty of sugar water and salt tablets for the cranking crewe....(:+}}..... (or sufficent bilgewater brewe.....) I have an angry 9, but it is not the easiest receiver to work with, on 40M. I was very favorably impressed with the angry 109, though. My very first FD was with the angry 9's grandpa, a BC-1306 noviceified, dyno, diesel truck batteries, and a 300 foot baloon flown antenna off a mountain top. Me and the grunt that helped me liketa died lugging 500lbs of lead up a 500 foot hill after we ran out of track ruts. We novices made some 35 QSO's if I remember rightly, but it was the stuff folks dream of as a geek novice, for FD thingies. Good Luck, and report back the trials and tribulations..... Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 8 12:13:26 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id MAA02975 for ; Mon, 8 Jun 1998 12:13:26 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id MAA06680 for ; Mon, 8 Jun 1998 12:14:37 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA15586 for glowbugs-outgoing; Mon, 8 Jun 1998 08:31:23 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from sw2031.ki.icl.se (sw2031.ki.icl.se [140.150.92.61]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id IAA15575 for ; Mon, 8 Jun 1998 08:31:05 -0700 (PDT) Received: from algonet.se (janax2-nt.pc.fujitsu.se [140.150.83.62]) by sw2031.ki.icl.se (8.8.8/980217PRO) with ESMTP id PAA27159; Mon, 8 Jun 1998 15:31:07 GMT Message-ID: <357C0388.42DCA556@algonet.se> Date: Mon, 08 Jun 1998 17:30:16 +0200 From: Jan Axing Reply-To: janax@algonet.se Organization: Messy X-Mailer: Mozilla 4.04 [en] (WinNT; I) MIME-Version: 1.0 To: BOATANCHORS@LISTSERV.TEMPE.GOV, glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> (Fwd) 19 inch rack standard? References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO The funny thing is that the 19" standard is common in most of Europe. I can grab an SP-600 and install it in a Swedish rack without problem. Only difference is the M6 bolts, metric treads. Jan, SM5GNN Roberta J. Barmore wrote: > > Hi! > > The 19" wide rack panel does indeed come from The Phone Company, as > near as I can find out, and dates back to the late '20s at least. The odd > increments of height (1.75" and multiples) is a mystery and a deeper one > than it might seem at first sight, as the plainest standard telephone-type > rackmounting patch panels are *not* built in heights evenly divisible by > 1.75"! (In the BC biz, we used "jack mats," false fronts that built out > the height to a standard increment, and nowadays, they simply make the > panels in standard dimensions). etc... From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 8 12:14:25 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id MAA02979 for ; Mon, 8 Jun 1998 12:14:25 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id MAA07355 for ; Mon, 8 Jun 1998 12:15:36 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA15622 for glowbugs-outgoing; Mon, 8 Jun 1998 08:33:36 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from pp.hw.ac.uk (pp@pp.hw.ac.uk [137.195.151.253]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id IAA15610 for ; Mon, 8 Jun 1998 08:33:17 -0700 (PDT) Received: from punt2.hw.ac.uk by pp.hw.ac.uk with SMTP(trusted); Mon, 8 Jun 1998 16:32:10 +0100 Received: from annexuser2.cen.hw.ac.uk (annexuser2.cen.hw.ac.uk [137.195.165.11]) by punt2.hw.ac.uk (8.8.8/8.8.8) with SMTP id QAA23684; Mon, 8 Jun 1998 16:31:21 +0100 Message-Id: <199806081531.QAA23684@punt2.hw.ac.uk> MIME-Version: 1.0 To: mack From: Bill Jarvis CC: BOATANCHORS , glowbugs Date: Mon, 08 Jun 1998 16:31:15 -0600 X-Mailer: Net-Tamer 1.11 Subject: GB> Re: GB (Fwd) 19 inch rack standard? Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On 1998-06-08 mack@mails.imed.com said: Cc: glowbugs@piobaire.mines.uidaho.edu Actually, it *does* fit an imperial figure. If you allow 0.5 inches of clearance on each side for the mounting holes, you end up with 18 inches between the holes for the sparky bits. Just a guess. The same probably applies to the vertical distance. The holes are probably an even number of 0.25 inches (I never actaully measured one!) and the height probably gives enough space above and below for good mechanical strength with 4 screws in the panel. Another guess is that you need a minimum height to lessen the bending moment on the front panel. Racks are meant to hold things that are quite deep behind the panel. My guess on the origin would have to be Western Electric. They are probably the most likely to have the kind of clout to set such an unusual standard. Ray Mack WD5IFS mack@mails.imed.com Friendswood, TX ______________________________ Reply Separator _________________________________ For many years I've pondered the origins of the 19 inch equipment rack standard and perhaps this is the forum to seek answers... Yeh, the fundamental measurement - where did they come up with 19 inches as a size? It's not a neat metric figure (482mm) nor a neat imperial figure (why not 18 (half a yard) or 20 inches?). Once one gets into the vertical sizes it gets worse. One unit = one and three quarter inches? Does anyone have any ideas here? Any dates - I think we're in the region between the two world Wars? What about the 19 mm spacing for the (UK standard?) twin 4 mm plug and/or socket? Turns out it originated in the UK as 3/4 thumb-knuckles. (Was it Jas 1 of Scotland But Not England who defined the inch as the width of a man's thumb at the knuckle? Sexist AND racist.) ============ ===== ===== BILL J. ===== ===== ============ GM8APX, qthr Edinburgh, Scotland, UK Nutrix! Ex cubile iterum est! Net-Tamer V 1.11 - Registered From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 8 17:31:41 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id RAA00417 for ; Mon, 8 Jun 1998 17:31:40 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id RAA15603 for ; Mon, 8 Jun 1998 17:32:01 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id NAA22844 for glowbugs-outgoing; Mon, 8 Jun 1998 13:43:44 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from camel14.mindspring.com (camel14.mindspring.com [207.69.200.64]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id NAA22839 for ; Mon, 8 Jun 1998 13:43:39 -0700 (PDT) Received: from sorcery-2 (user-38lc3j5.dialup.mindspring.com [209.86.14.101]) by camel14.mindspring.com (8.8.5/8.8.5) with SMTP id QAA25391 for ; Mon, 8 Jun 1998 16:43:11 -0400 (EDT) Message-Id: <3.0.5.32.19980608153840.0085a100@pop.pipeline.com> X-Sender: lrware@pop.pipeline.com X-Mailer: QUALCOMM Windows Eudora Pro Version 3.0.5 (32) Date: Mon, 08 Jun 1998 15:38:40 +0000 To: glowbugs@piobaire.mines.uidaho.edu From: "Lawrence R. Ware" Subject: GB> crystal contest winners Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I got three quite good entries to my crystal giveaway contest. Thus I'm going to split the pile of 33 crystals into thirds so we can have three winners..... The winning entries: #1: As you know, XXXX and I do not live very fancy, and my mother has been quite distressed that we have no good dinnerware. I figure that if I can manage to work some Asian DX on 20m, that'll take care of the lack of china--but alas, we've no crystal! So, as you can see, purchasing your collection of same would put me in the high-style bracket, able to put on airs with the best of 'em. --Nobody'd have a table-setting like that! :) ------------------------------------------------------------------------ #2: Deer Larry. I ain't tryin to be funny, but I think I kin use them crystal thingies. See, not long ugo I was out to the outhouse and some feller had hung this book on the wall fer paper and I got to reedin it while I was ... well, I got to reedin it and it looked reel interestin. I been reedin it fer a cuple of weeks now, well, lookin at the pitchers mostly, cause I aint got much edgicashun (I bet you are serprised I kin evin spell it!!). My pursenal hygeen has suffered some with too weeks without paper to ... you know, but it has ben werth it. This book is titled somethin like "The Radio Armatures Hambook" or sumthin like that. Anyway, I been reedin that book, well lookin at the pitchers, mostly, cause my reedin aint as good as my spellen, but I think if I had all them crystal thingies, I cud git me one of them toob things and hook up all them crystals up to it. No, I aint stoopid, I know I will need to hook sum of them cowpastures and reswiskers and stuff to it to make it in too an oskillater. I mite need sum rectumfryers and stuff fer power, too. I kin tell frum the pitchers in the book that them little eleckterons will exsite them crystals and make them oskillate and with all them hooked together, I shud git all kinds of frequinsees out of this littel jewel! Shucks, I kud proberly talk to all the glowbug fellers on ALL of the glowbug frequinsees ALL AT THE SAME TIME! I mite git advansed enuff to add an applefryer to the thing and wurk DX! Well, thats about it, I shore hope one of them guys doent come up with sumthin funny, cause I'm not kiddin, them crystals wud be just the thing to start my karreer in radeo. P.S. My wife says I kant stay in the house ennymore if I dont put the paper back in the outhouse. Yures trooley, Clem Kadittlehopper --------------------------------------------------------------------- And #3: Secure in the certainty that leaving your entire message intact was the proper action (thereby recycling even the ASCII characters as well as the electrons), here's my offer on what to do with that mystifyingly strange group of crystals: Noting that you mentioned >Some really odd frequency parts here... I'd like to comment that my crystal collection includes some really *EVEN* frequency parts. Thus, if I were awarded the rights to purchase your rocks, proper heterodyne conversion would finally enable my operation on other than even frequencies. You have no idea how bothersome it is when others are operating on 3,579,545 Hertz and I can only attain 3,579,544 or 3,579,546. Goodness me, you'd think that only being one hertz off would cause no problem, but then the use of those "sliver-bandpass" regenerative detectors by so many of out fraternity seems to just freeze me out. So, as you can readily understand, it's either get those odd frequency parts *or* convince everyone to go to wide-band receivers, things with bandwidth greater than 0.707 Hertz or so, otherwise my operation will be limited to the unimportance of melting the ice on the antenna. This time of year, that's pretty darned inconsequential. --------------------------------------------------------------------------- As you can see, we certainly have some *interesting* folks on this mail reflector.... :-) I'll be notifying the winners shorty.... Thanks to everyone who entered, Sometimes a good laugh is the best thing that happens all day. :-) -Larry # Larry's Home for Wayward Test Equipment & Old Radios # Let your equipment retire in sunny central Florida. # Intensive Care, Private Bench Space, Frequent Use, # Factory trained HP, Tek & Fluke Surgeon on staff. # Good Home Guaranteed or double your junk back! # lrware@pipeline.com - Orlando, FL - # 407.679.1597 From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 8 18:55:57 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id SAA00464 for ; Mon, 8 Jun 1998 18:55:56 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id SAA21000 for ; Mon, 8 Jun 1998 18:56:18 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id PAA24769 for glowbugs-outgoing; Mon, 8 Jun 1998 15:21:13 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.hits.net (mail.hits.net [206.127.244.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id PAA24764 for ; Mon, 8 Jun 1998 15:21:07 -0700 (PDT) Received: from 206.127.244.114 (excalibur48.hits.net [206.127.244.114]) by mail.hits.net (8.8.8/8.8.5) with SMTP id MAA07578; Mon, 8 Jun 1998 12:19:44 -1000 (HST) Message-ID: <357C6206.745B@hits.net> Date: Mon, 08 Jun 1998 12:13:27 -1000 From: Peter Demmer Reply-To: ampruss@hits.net Organization: AMPRUSS Co. X-Mailer: Mozilla 3.01 (Macintosh; I; 68K) MIME-Version: 1.0 To: Sandy W5TVW CC: BASWAPLIST@foothill.net, boatanchors@theporch.com, BOATANCHORS@listserv.tempe.gov, glowbugs@piobaire.mines.uidaho.edu, listserv@listserv.tempe.gov Subject: GB> Re: FS/FT: Power supply parts (Large!) References: <19980606041337.JCPT22706@LOCALNAME> Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Sandy W5TVW wrote: SNIP....FOR REFERENCE ONLY > > I'm interested in offers/trades. Pickup only, I'm afraid! These > chunks of iron > are heavy! Tradewise, I'm looking for a Measurements 59 grid dip meter, > General-Radio stuff-particularly RF admittance bridge, precision capacitor > decades, RAL receiver with or without power supply, and a Hallicrafters > SR-75. What have you? > > 73, > Sandy W5TVW Hi Sandy. Your heavy iron renderings were so timly. Im in the heat of bending and mangeling metal, slinging solder and apperently frying HV xfmers. The project is Jack's (W7QQQ) 813 xtal power oscillator. I heat soaked two power xfmers this weekend. No luck, joy or juice. Both have internal 2ndry opens. Im trying to get this project ready for FD 98. I have two micro wave oven xfmers and their respective schematics. Funny thing Sandy, in both cases, one side of the HV secoundary (2.2 kv) is rivited to the super quality core and in one case one side of the LV (3.1 volt) winding is also lugged and rivited to the same spot on the xfmer core. What to do? I want to use these HV xfmers for the single 813's plate supply. Two Question: Would it work to lift the grounded side of the HV 2ndry from the core and wire (HV style) it up as as into a full-wave, or a full wave bridge? Primary surge current limiting included. I have also considered pulling out the 3.1 volt maggi htr winding and rewind it with some #12 awg Teflon™ for the 10 volts (at 5 Amps) for the single 813 htr. The core has a TIG welded seam on two sides so the heater winding is a push through and a pull out winding task. Three Questions; Could I use a simple diode capacitor tripler to get the heater voltage up to 9.3 ie 10 volts at ummm.. 5 Amps.. How big would the caps have to be. Better consider rewinding the LV winding yes? I don't have a clue on how much the maggi cathode drew? I wonder if you or any body else on these lists can give me some down and simply do it like this guidence here. FD is neigh and Im running out of clock. To Jack, Tnx for the schematic, I went with the glow bug screen keying circuit so the screen supply at + 470 volts and - 310 volts (10mA) is inclusive and self resolved. This route also allowed me the (choke isolated) voltages to included the 6AH6 electronic T/R antenna switching in a mini box in and on the chassie. Thanks for the beam width and Aloha Peter KH6CTQ. From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 8 20:48:14 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id UAA00521 for ; Mon, 8 Jun 1998 20:48:12 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id UAA30760 for ; Mon, 8 Jun 1998 20:48:35 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id RAA26389 for glowbugs-outgoing; Mon, 8 Jun 1998 17:17:15 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mailbox.uq.edu.au (root@dingo.cc.uq.edu.au [130.102.2.14]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id RAA26384 for ; Mon, 8 Jun 1998 17:17:10 -0700 (PDT) Received: from [130.102.44.38] (jkmac38.jkmrc.uq.edu.au [130.102.44.38]) by mailbox.uq.edu.au (8.8.8/8.8.8) with ESMTP id KAA11252 for ; Tue, 9 Jun 1998 10:16:26 +1000 (GMT+1000) Date: Tue, 9 Jun 1998 10:16:26 +1000 (GMT+1000) Message-Id: Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable To: glowbugs@piobaire.mines.uidaho.edu From: Peter Holtham Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Peter KH6CTQ wrote: "I have two micro wave oven xfmers and their respective schematics. =46unny thing Sandy, in both cases, one side of the HV secoundary (2.2 kv) is rivited to the super quality core and in one case one side of the LV (3.1 volt) winding is also lugged and rivited to the same spot on the xfmer core. What to do? I want to use these HV xfmers for the single 813's plate supply. Two Question: Would it work to lift the grounded side of the HV 2ndry from the core and wire (HV style) it up as as into a full-wave, or a full wave bridge? Primary surge current limiting included. I have also considered pulling out the 3.1 volt maggi htr winding and rewind it with some #12 awg Teflon=99 for the 10 volts (at 5 Amps) for the single 813 htr. The core has a TIG welded seam on two sides so the heater winding is a push through and a pull out winding task. Three Questions; Could I use a simple diode capacitor tripler to get the heater voltage up to 9.3 ie 10 volts at ummm.. 5 Amps.. How big would the caps have to be. Better consider rewinding the LV winding yes? I don't have a clue on how much the maggi cathode drew?" I am building a 2 x 813 amplifier here, and also using microwave transformers. I have managed to get hold of 2 identical transformers and will be using both for the HV supply. I think it is probably safer to use this approach rather than lift one end of the HV winding from the core. As far as rewinding for the heaters, I pulled out the 3.1 v winding, its quite easy with a bit of care, and rewound at 1 turn/volt with something like 12 gauge (I looked up suitable wire sizes somewhere in the ARRL HBook). This worked fine, it gave me 10 v plus or minus a little bit, at the 813 pins. Getting those 813s to glow was as far as I have got, really lit the shack up= ! Hope this helps, Peter VK4COZ From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 8 21:54:07 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id VAA00564 for ; Mon, 8 Jun 1998 21:54:07 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id VAA02390 for ; Mon, 8 Jun 1998 21:54:29 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id SAA27345 for glowbugs-outgoing; Mon, 8 Jun 1998 18:18:07 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail1.monumental.com (mail1.mnsinc.com [206.55.3.18]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id SAA27340 for ; Mon, 8 Jun 1998 18:18:03 -0700 (PDT) Received: from COMPUTER (bry.mnsinc.com [206.239.150.65]) by mail1.monumental.com (8.8.8/8.8.8) with SMTP id VAA19082 for ; Mon, 8 Jun 1998 21:13:16 -0400 (EDT) Message-Id: <199806090113.VAA19082@mail1.monumental.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: glowbugs@piobaire.mines.uidaho.edu Date: Mon, 8 Jun 1998 21:09:18 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: Re: GB> Vintage FD this weekend... how many Glowbuggeites be the Reply-to: bry@mnsinc.com Priority: normal In-reply-to: <199806081801.OAA14030@seedlab1.cropsci.ncsu.edu> X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Is this mostly like an "AM thang" or a "CW thang?" Or mebbe both? On 8 Jun 98 at 14:01, User wrote: > Well, this weekend (13th-14th) is the Vintage FD 98 run. 7pm-7pm > Sat/Sun. I was wondering how many of the Glowbugge Crewe will be > about, and who will be running what? I will be on 80M, and will > fire up Grandma Hartley and the '25 detector and one step. I ought > to be able to work anyone east of the Big Muddy, but dunno about > farther out. So, who's on second and what's ya gonna run on third? > > Bob/NA4G > **************************************************** *** 73 from Radio AF4K/G3XLQ Gaithersburg, MD USA * ** E-mail to: bry@mnsinc.com * *** ICQ 6124470 *** ** http://www.mnsinc.com/bry/ * **************************************************** AM International #1024, TENTEN #13582. GRID FM19. Rigs: Valiant, DX-60/HG-10, FT-840, TM-261A, Harvey Wells Bandmaster, Drake 2 C. TEN-TEN #13582, DXCC #17763, Bicentennial WAS From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 8 23:36:42 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id XAA00618 for ; Mon, 8 Jun 1998 23:36:42 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id XAA04702 for ; Mon, 8 Jun 1998 23:37:06 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id UAA28507 for glowbugs-outgoing; Mon, 8 Jun 1998 20:08:34 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from main.aeneas.net (root@main.aeneas.net [207.203.176.23]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id UAA28502 for ; Mon, 8 Jun 1998 20:08:30 -0700 (PDT) Received: from [207.203.177.24] (pmj309.aeneas.net [207.203.177.24]) by main.aeneas.net (8.6.12/8.6.9) with SMTP id WAA02752; Mon, 8 Jun 1998 22:10:48 -0500 X-Sender: w5hvv@mail.aeneas.net Message-Id: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Mon, 8 Jun 1998 22:07:54 +0600 To: glowbugs@piobaire.mines.uidaho.edu, BOATANCHORS@listserv.tempe.gov From: w5hvv@aeneas.net (Roderick M. Fitz-Randolph) Subject: GB> Monday Night Thunderstorms Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I guess we are in the spring/summer thunderstorm season. Won't be on 7118 tonight because of the QRN level and lightning that we are going to experience, according to the local wx channel..... will keep trying, fellows. Got to get a decent night in one of these times. Rod, N5HV From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 9 01:14:19 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id BAA00668 for ; Tue, 9 Jun 1998 01:14:18 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id BAA13147 for ; Tue, 9 Jun 1998 01:14:45 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id VAA29434 for glowbugs-outgoing; Mon, 8 Jun 1998 21:52:01 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.xmission.com (mail.xmission.com [198.60.22.22]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id VAA29429 for ; Mon, 8 Jun 1998 21:51:58 -0700 (PDT) Received: from slc446h.modem.xmission.com (xmission.com) [166.70.2.192] by mail.xmission.com with esmtp (Exim 1.82 #2) id 0yjGNO-00054W-00; Mon, 8 Jun 1998 22:51:15 -0600 Message-ID: <357C6ADC.9E9A8609@xmission.com> Date: Mon, 08 Jun 1998 22:51:10 +0000 From: Dexter Francis Reply-To: cwest@xmission.com Organization: CWest Tube Sales X-Mailer: Mozilla 4.05 (Macintosh; I; PPC) MIME-Version: 1.0 To: Old Tube Radios , glowbugs@piobaire.mines.uidaho.edu Subject: GB> One Tube Tx Schematic pdf file available References: <199806081905.OAA08824@sco.theporch.com> Content-Type: text/plain; charset=us-ascii; x-mac-type="54455854"; x-mac-creator="4D4F5353" Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Greetings all - I finally figured out how to get the link to the 6T9 Single Tube Transmitter schematic up and working - and it was embarassingly simple. (I'm no HTML guru.) So those of you who have the free Adobe Acrobat Reader software - either integrated with your web browser or seperate - ought to be able to get and view it. (If you don't have the reader you can get it at http://www.adobe.com - it's free.) I'd like to know how well this is going to work, as I'd like to add a lot more of this sort of thing to the web page, so let me know how you do with the download. -df *** CWest - P.O. Box 22443 Salt Lake City, Utah 84122 *** Visit our Web Page @ http://www.xmission.com/~cwest From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 9 01:17:41 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id BAA00675 for ; Tue, 9 Jun 1998 01:17:40 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id BAA12323 for ; Tue, 9 Jun 1998 01:18:07 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id VAA29449 for glowbugs-outgoing; Mon, 8 Jun 1998 21:54:55 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from enterprise.powerup.com.au (enterprise.powerup.com.au [203.32.8.37]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id VAA29442 for ; Mon, 8 Jun 1998 21:54:36 -0700 (PDT) Received: (qmail 25366 invoked from network); 9 Jun 1998 04:53:48 -0000 Received: from ts5728.powerup.com.au (HELO mkelly) (202.139.238.156) by enterprise.powerup.com.au with SMTP; 9 Jun 1998 04:53:48 -0000 Message-ID: <357CBFD6.397A@powerup.com.au> Date: Tue, 09 Jun 1998 14:53:42 +1000 From: Murray Kelly Reply-To: mkelly@powerup.com.au Organization: M P Kelly (Med) P/L X-Mailer: Mozilla 3.01C-NSCP (Win95; I) MIME-Version: 1.0 To: Peter Holtham CC: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Re: References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Peter and Peter. Don't forget to remove the magnetic shunts. The bundle of laminations between the two windings. Use a pin punch. Once they are started they pull out easily but a slip, and you may ruin the windings. Holtham wrote: > > Peter KH6CTQ wrote: > > "I have two micro wave oven xfmers and their respective schematics. > Funny thing Sandy, in both cases, one side of the HV secoundary (2.2 kv) > is rivited to the super quality core and in one case one side of the LV > (3.1 volt) winding is also lugged and rivited to the same spot on the > xfmer core. What to do? I want to use these HV xfmers for the single > 813's plate supply. Two Question: Would it work to lift the grounded > side of the HV 2ndry from the core and wire (HV style) it up as as into > a full-wave, or a full wave bridge? snip and ...... > > I am building a 2 x 813 amplifier here, and also using microwave > transformers. I have managed to get hold of 2 identical transformers and > will be using both for the HV supply. I think it is probably safer to use > this approach rather than lift one end of the HV winding from the core. ****************************************************************** * Murray Kelly vk4aok mkelly@powerup.com.au * * 29 Molonga Ter. / Graceville/ QLD. 4075/ Australia * * ph/fax Intl+ 61 7 3379 3307 * ****************************************************************** From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 9 02:52:28 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id CAA00724 for ; Tue, 9 Jun 1998 02:52:27 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id CAA07605 for ; Tue, 9 Jun 1998 02:52:54 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id XAA00569 for glowbugs-outgoing; Mon, 8 Jun 1998 23:29:19 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from sstar.com (sstar.com [204.27.72.1]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id XAA00562 for ; Mon, 8 Jun 1998 23:29:12 -0700 (PDT) Received: by emachine.com (wcGATE v4) id 40293W Tue, 9 Jun 1998 06:28:58 GMT From: ralph.hartwell@emachine.com (Ralph Hartwell) Subject: GB> Re: FS/FT: Power supply parts (Large!) Date: Tue, 9 Jun 1998 06:07:00 GMT Message-Id: <9806090028589248@emachine.com> Organization: The Energy Machine Information System 504-733-3462 To: glowbugs@piobaire.mines.uidaho.edu Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO PD>I have two micro wave oven xfmers and their respective schematics.=20 PD>Funny thing Sandy, in both cases, one side of the HV secoundary (2.2 kv) PD>is rivited to the super quality core and in one case one side of the LV PD>(3.1 volt) winding is also lugged and rivited to the same spot on the PD>xfmer core. What to do? I want to use these HV xfmers for the single Some of the Tesla coil crowd uses four these xfmrs in series to obtain 6-8kv for their coils. They un ground the secondary winding and series several of the xfmrs, carefully insulating the cores from ground on a plastic frame. The pri's are all in parallel. It appears they hold up OK, but I'd sure be careful with an arrangement like that! Some of the fellows oil immerse the whole arrangement. I am going to use one of these xfmrs in a FWB arrangement for a 4-250 amp. I should be able to get about 2400 - 2800v out of it under load. I don't expect any problems with un grounding the low end of the secondary winding, based on the Tesla coilers experience. These xfmrs are current limited, and they have a pair of magnetic shunts between the pri and sec windings. You may have to drive one or both shunts out of the core with a hammer and punch to get the current up to snuff. Be aware, that this will increase the no load pri idle current quite a bit, though, with a corresponding increase in winding heating. Another serious source of heat is that most of these xfmrs are manufactured with the minimum amount of iron and copper in them. They generally run the core to saturation or very near to it. As a result, the core gets really HOT after about 30 minutes of no load idle operation. The transformer also has a pretty strong external magnetic field due to the lack of iron in the core. OTOH< they are readily available and cheap. I obtained several by simply stopping my car and picking the discarded microwave ovens up at the curb where their former owners had discarded them for the trash man. Several of the units I picked up worked just fine after I cleaned the dead bugs and such out of them. The others had problems ranging from a bad maggie to bad timers and bad door switches. Right now, I have three working ovens, besides the ones I dismantled for parts. They also have quite a few other good parts, heavy duty Microswitch style switches, a good line cord, an excellent high pressure cooling fan (handy for cooling the xfmr) and a 1 or 2 uF hv capacitor, and the oven cavity light and socket, always usable for a largish indicator light in glow buggie construction. Sometimes the magnetron and rectifier are also good. The rectifier is handy for projects, and the magnetron has a couple of nice magnets in it if the tube is no good. Happy scrounging! Ralph W5JGV --- þ QMPro 1.53 þ Money is the root of all evil. For more info send $20. From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 9 08:04:02 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id IAA00886 for ; Tue, 9 Jun 1998 08:04:01 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id IAA32015 for ; Tue, 9 Jun 1998 08:04:31 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id EAA02970 for glowbugs-outgoing; Tue, 9 Jun 1998 04:33:23 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.hits.net (mail.hits.net [206.127.244.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id EAA02965 for ; Tue, 9 Jun 1998 04:33:16 -0700 (PDT) Received: from 206.127.244.114 (excalibur46.hits.net [206.127.244.112]) by mail.hits.net (8.8.8/8.8.5) with SMTP id BAA17874; Tue, 9 Jun 1998 01:32:34 -1000 (HST) Message-ID: <357D1B64.6A77@hits.net> Date: Tue, 09 Jun 1998 01:24:21 -1000 From: Peter Demmer Reply-To: ampruss@hits.net Organization: AMPRUSS Co. X-Mailer: Mozilla 3.01 (Macintosh; I; 68K) MIME-Version: 1.0 To: Peter Holtham CC: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Re: References: Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Peter Holtham wrote: > > Peter KH6CTQ wrote: > > "I have two micro wave oven xfmers and their respective schematics. > Funny thing Sandy, in both cases, one side of the HV secoundary (2.2 kv) > is rivited to the super quality core and in one case one side of the LV > (3.1 volt) winding is also lugged and rivited to the same spot on the > xfmer core. What to do? I want to use these HV xfmers for the single > 813's plate supply. Two Question: Would it work to lift the grounded > side of the HV 2ndry from the core and wire (HV style) it up as as into > a full-wave, or a full wave bridge? Primary surge current limiting > included. > > I have also considered pulling out the 3.1 volt maggi htr winding and > rewind it with some #12 awg Teflon™ for the 10 volts (at 5 Amps) for the > single 813 htr. The core has a TIG welded seam on two sides so the > heater winding is a push through and a pull out winding task. > Three Questions; > Could I use a simple diode capacitor tripler to get the heater voltage > up to 9.3 ie 10 volts at ummm.. 5 Amps.. How big would the caps have to > be. Better consider rewinding the LV winding yes? I don't have a clue > on how much the maggi cathode drew?" > > I am building a 2 x 813 amplifier here, and also using microwave > transformers. I have managed to get hold of 2 identical transformers and > will be using both for the HV supply. I think it is probably safer to use > this approach rather than lift one end of the HV winding from the core. > > As far as rewinding for the heaters, I pulled out the 3.1 v winding, its > quite easy with a bit of care, and rewound at 1 turn/volt with something > like 12 gauge (I looked up suitable wire sizes somewhere in the ARRL > HBook). This worked fine, it gave me 10 v plus or minus a little bit, at > the 813 pins. > > Getting those 813s to glow was as far as I have got, really lit the shack up! > > Hope this helps, > > Peter VK4COZ Peter KH6CTQ wrote; Tnx Peter VK4COZ, for your inputs. Well tomorrow will be the test. I could half wave rectify the HV as it is and slap a capacitor in parallel across the filter choke as a tuned LC 60 cycle filter. My xfmers are not the same. Could also consider float / mounting the xfmer on a 3/4" slab of Lucite™ placing the whole xfmer core above ground and another slab on top for safety and finger poken protection. Your matched pair will provide you with about 2KV each side of the two laminated cores. In this situation, I beleive you will also have to provide an insulated base to set both transformers on. As I understand it, your intent is to series connect the two micro-wave xfmers secoundaries. Again, both laminated xfmer cores will have to be considered as the electrically connected series link. I will disconnect the HV lead presently connected and for all purposes and intent, grounded to the xfmer laminated core. Ill dress it back with Teflon™ sleeving, add the 5KV diode full wave rectifier stack, the 43 mFd capacitor at 3.5KV and a 100k ohm /50 watt bleeder. Ill bring it up slow using a variac and pre-wire up the current mA meter and let it load soak. Ill keep you guys posted. Thanks again Aloha, Peter KH6CTQ From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 9 08:42:03 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id IAA00911 for ; Tue, 9 Jun 1998 08:41:58 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id IAA32261 for ; Tue, 9 Jun 1998 08:42:28 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id FAA03559 for glowbugs-outgoing; Tue, 9 Jun 1998 05:14:48 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail1.monumental.com (mail1.mnsinc.com [206.55.3.18]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id FAA03554 for ; Tue, 9 Jun 1998 05:14:41 -0700 (PDT) Received: from COMPUTER (bry.mnsinc.com [206.239.150.65]) by mail1.monumental.com (8.8.8/8.8.8) with SMTP id IAA15073; Tue, 9 Jun 1998 08:10:10 -0400 (EDT) Message-Id: <199806091210.IAA15073@mail1.monumental.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: dcboatanchors@qth.net, baswaplist@foothill.net, johnson@qth.net Date: Tue, 9 Jun 1998 08:05:57 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: GB> CRYSTALS: If you can't find them Reply-to: bry@mnsinc.com CC: BOATANCHORS@LISTSERV.TEMPE.GOV, glowbugs@piobaire.mines.uidaho.edu, uk-vintage-radio@webaware.co.uk Priority: normal X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO FYI: CRYSTALS: If you can't find them here, you can't find them anywhere!! MANY MANY crystals for sale and wanted to buy. The listing has just been updated with many new additions! Take a look - you may find just what you are looking for! Need to sell excess inventory of rocks? The ADS are FREE! All for fun! 73 to all de AF4K, Bry http://www.mnsinc.com/bry/xtalpage.htm From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 9 09:48:51 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id JAA00962 for ; Tue, 9 Jun 1998 09:48:50 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id JAA08976 for ; Tue, 9 Jun 1998 09:49:23 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id GAA04119 for glowbugs-outgoing; Tue, 9 Jun 1998 06:15:24 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id GAA04114 for ; Tue, 9 Jun 1998 06:15:20 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id NAA01253; Tue, 9 Jun 1998 13:11:21 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806091711.NAA01253@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> Vintage FD this weekend... how many Glowbuggeites be there? In-Reply-To: <19980608215232.RWRY15374@LOCALNAME> from Sandy W5TVW at "Jun 8, 98 09:52:32 pm" To: ebjr@worldnet.att.net (Sandy W5TVW) Date: Tue, 9 Jun 1998 13:11:20 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > At 03:17 PM 6/8/98 -0400, you wrote: > >What QRG you guys gonna use? If it ain't too hot, I can setup in the park > just outside my back yard probably with the Heatkit Novice twins or the > Elmac stuff on batteries. Depends on whether I can get my little PE-214 > generator running or not. > > 73, > Sandy W5TVW I favor 3535 and 3579 as the usual rallying points on 80M, and 7050 for 40M, pending contests and the like. Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 9 09:49:33 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id JAA00967 for ; Tue, 9 Jun 1998 09:49:33 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id JAA10936 for ; Tue, 9 Jun 1998 09:50:05 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id GAA04286 for glowbugs-outgoing; Tue, 9 Jun 1998 06:24:31 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail1.monumental.com (mail1.mnsinc.com [206.55.3.18]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id GAA04280 for ; Tue, 9 Jun 1998 06:24:27 -0700 (PDT) Received: from COMPUTER (bry.mnsinc.com [206.239.150.65]) by mail1.monumental.com (8.8.8/8.8.8) with SMTP id JAA01731 for ; Tue, 9 Jun 1998 09:20:18 -0400 (EDT) Message-Id: <199806091320.JAA01731@mail1.monumental.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: glowbugs@piobaire.mines.uidaho.edu Date: Tue, 9 Jun 1998 09:16:30 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=ISO-8859-1 Content-transfer-encoding: Quoted-printable Subject: Re: GB> Re: Reply-to: bry@mnsinc.com Priority: normal In-reply-to: <357D1B64.6A77@hits.net> X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I have one of these transformers too and want to try a similar experiment soon... Can't wait to hear your results... I hope it goes well, Peter! Bry, AF4K On 9 Jun 98 at 1:24, Peter wrote: > Peter KH6CTQ wrote; > Tnx Peter VK4COZ, for your inputs. Well tomorrow will be the test. > I could half wave rectify the HV as it is and slap a capacitor in > parallel across the filter choke as a tuned LC 60 cycle filter. My > xfmers are not the same. Could also consider float / mounting the > xfmer on a 3/4" slab of Lucite=D6 placing the whole xfmer core above > ground and another slab on top for safety and finger poken > protection. > > Your matched pair will provide you with about 2KV each side of the > two laminated cores. In this situation, I beleive you will also > have to provide an insulated base to set both transformers on. As I > understand it, your intent is to series connect the two micro-wave > xfmers secoundaries. Again, both laminated xfmer cores will have to > be considered as the electrically connected series link. > > I will disconnect the HV lead presently connected and for all > purposes and intent, grounded to the xfmer laminated core. Ill dress > it back with Teflon=D6 sleeving, add the 5KV diode full wave rectifier > stack, the 43 mFd capacitor at 3.5KV and a 100k ohm /50 watt > bleeder. Ill bring it up slow using a variac and pre-wire up the > current mA meter and let it load soak. > > Ill keep you guys posted. Thanks again Aloha, Peter KH6CTQ > > From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 9 10:52:46 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id KAA01027 for ; Tue, 9 Jun 1998 10:52:45 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id KAA03316 for ; Tue, 9 Jun 1998 10:53:19 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA04778 for glowbugs-outgoing; Tue, 9 Jun 1998 07:21:49 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from els.imed.com (imed.com [192.246.2.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id HAA04773 for ; Tue, 9 Jun 1998 07:21:45 -0700 (PDT) Received: from mails.imed.com by els.imed.com with SMTP (1.38.193.5/15.6) id AA18818; Tue, 9 Jun 1998 09:20:48 -0500 Received: from ccMail by mails.imed.com (IMA Internet Exchange 2.1 Enterprise) id 000BA0C9; Tue, 9 Jun 98 08:34:06 -0600 Mime-Version: 1.0 Date: Tue, 9 Jun 1998 08:24:10 -0600 Message-Id: <000BA0C9.@mails.imed.com> From: mack@mails.imed.com (Ray Mack) Subject: GB> Re: Oven Transformers Cc: glowbugs@piobaire.mines.uidaho.edu Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Description: cc:Mail note part Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO My guess is that he is going to ground the transformer cores and use the 2 transformers as a full-wave center tapped transformer. That is certainly how I would solve the problem. You would ground the center tap anyway. In this case, you also ground the core. Of course the core is usually bolted to the chassis in any case. I agree that this is the safest way to handle these transformers. I really worry about safety when dealing with really high voltage floated above the chassis. Ray Mack WD5IFS mack@mails.imed.com Friendswood (Houston), TX > I am building a 2 x 813 amplifier here, and also using microwave > transformers. I have managed to get hold of 2 identical transformers and > will be using both for the HV supply. I think it is probably safer to use > this approach rather than lift one end of the HV winding from the core. Your matched pair will provide you with about 2KV each side of the two laminated cores. In this situation, I beleive you will also have to provide an insulated base to set both transformers on. As I understand it, your intent is to series connect the two micro-wave xfmers secoundaries. Again, both laminated xfmer cores will have to be considered as the electrically connected series link. From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 9 11:40:59 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id LAA01141 for ; Tue, 9 Jun 1998 11:40:49 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id LAA12036 for ; Tue, 9 Jun 1998 11:41:22 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA05371 for glowbugs-outgoing; Tue, 9 Jun 1998 08:08:49 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from pp.hw.ac.uk (pp@pp.hw.ac.uk [137.195.151.253]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id IAA05364 for ; Tue, 9 Jun 1998 08:08:38 -0700 (PDT) Received: from punt2.hw.ac.uk by pp.hw.ac.uk with SMTP(trusted); Tue, 9 Jun 1998 16:08:08 +0100 Received: from annexuser4.cen.hw.ac.uk (annexuser4.cen.hw.ac.uk [137.195.165.13]) by punt2.hw.ac.uk (8.8.8/8.8.8) with SMTP id QAA05625; Tue, 9 Jun 1998 16:07:58 +0100 Message-Id: <199806091507.QAA05625@punt2.hw.ac.uk> MIME-Version: 1.0 To: ampruss From: Bill Jarvis CC: "p.holtham" , glowbugs Date: Tue, 09 Jun 1998 16:07:52 -0600 X-Mailer: Net-Tamer 1.11 Subject: GB> Re: GB Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO HINT when re-using transformers from microwave ovens: If you are not going to let them overheat, install them inside Tupperware boxes of appropriate size. ============ ===== ===== BILL J. ===== ===== ============ GM8APX, qthr Edinburgh, Scotland, UK Sic vos non vobis mellificatis, apes Net-Tamer V 1.11 - Registered From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 9 12:52:40 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id MAA01191 for ; Tue, 9 Jun 1998 12:52:40 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id MAA31713 for ; Tue, 9 Jun 1998 12:53:14 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA06415 for glowbugs-outgoing; Tue, 9 Jun 1998 09:03:26 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from pp.hw.ac.uk (pp@pp.hw.ac.uk [137.195.151.253]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA06410 for ; Tue, 9 Jun 1998 09:03:19 -0700 (PDT) Received: from punt2.hw.ac.uk by pp.hw.ac.uk with SMTP(trusted); Tue, 9 Jun 1998 17:02:37 +0100 Received: from annexuser1.cen.hw.ac.uk (annexuser1.cen.hw.ac.uk [137.195.165.10]) by punt2.hw.ac.uk (8.8.8/8.8.8) with SMTP id RAA06513; Tue, 9 Jun 1998 17:02:28 +0100 Message-Id: <199806091602.RAA06513@punt2.hw.ac.uk> MIME-Version: 1.0 To: mack From: Bill Jarvis CC: glowbugs Date: Tue, 09 Jun 1998 17:02:22 -0600 X-Mailer: Net-Tamer 1.11 Subject: GB> Re: GB Oven Transformers Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On 1998-06-09 mack@mails.imed.com said: Cc: glowbugs@piobaire.mines.uidaho.edu My guess is that he is going to ground the transformer cores and use the 2 transformers as a full-wave center tapped transformer. snip PS It would NOT matter if the "centre tap" was quite a lot off-centre, if you do it that way. May I suggest mounting them in Tupperware-type plastic cake boxes, if they are not going to overheat too much? I've got used to flexi-plastic boxes as strong, safe combined mounts/containers for EHT. ============ ===== ===== BILL J. ===== ===== ============ GM8APX, qthr Edinburgh, Scotland, UK Visne scire quod credam? Credo Elvem ipsum etiam vivere Net-Tamer V 1.11 - Registered From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 9 19:53:11 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id TAA01442 for ; Tue, 9 Jun 1998 19:53:11 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id TAA14327 for ; Tue, 9 Jun 1998 19:53:49 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id QAA13168 for glowbugs-outgoing; Tue, 9 Jun 1998 16:16:47 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.hits.net (mail.hits.net [206.127.244.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id QAA13163 for ; Tue, 9 Jun 1998 16:16:39 -0700 (PDT) Received: from 206.127.244.82 (excalibur16.hits.net [206.127.244.82]) by mail.hits.net (8.8.8/8.8.5) with SMTP id MAA05638; Tue, 9 Jun 1998 12:57:41 -1000 (HST) Message-ID: <357DBB61.5E5A@hits.net> Date: Tue, 09 Jun 1998 12:46:57 -1000 From: Peter Demmer Reply-To: ampruss@hits.net Organization: AMPRUSS Co. X-Mailer: Mozilla 3.01 (Macintosh; I; 68K) MIME-Version: 1.0 To: Ray Mack CC: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Re: Oven Transformers References: <000BA0C9.@mails.imed.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Ray Mack wrote: > > My guess is that he is going to ground the transformer cores and use the 2 > transformers as a full-wave center tapped transformer. That is certainly how I > would solve the problem. You would ground the center tap anyway. In this case, > you also ground the core. Of course the core is usually bolted to the chassis > in any case. I agree that this is the safest way to handle these transformers. > I really worry about safety when dealing with really high voltage floated above > the chassis. > > Ray Mack > WD5IFS > mack@mails.imed.com > Friendswood (Houston), TX > > > > I am building a 2 x 813 amplifier here, and also using microwave > > transformers. I have managed to get hold of 2 identical transformers and > > will be using both for the HV supply. I think it is probably safer to use > > this approach rather than lift one end of the HV winding from the core. > > Your matched pair will provide you with about 2KV each side of the two > laminated cores. In this situation, I beleive you will also have to > provide an insulated base to set both transformers on. As I understand > it, your intent is to series connect the two micro-wave xfmers > secoundaries. Again, both laminated xfmer cores will have to be > considered as the electrically connected series link. > Peter wrote; Mighty fine and safe suggestion Ray. I was in the float the center tap and run it through another diode and filter string mode for the duel use of the center-tap as my screen supply voltage. In adition, add another reversed diode and filter cap polarity string at this cn'tr -tap point and you also have your negative bias. As long as the xfmer is rated with more than enough current and with the three seperate (plate,screen and neg bias) supply bleeders the transformer output will be stabilized under a fairly constant idling current load. I did this for another xmitter project some years ago and sure as God made little green apples, it worked on a 600 VAC cn'tr tapped xfmer. IMMHO, that's the way to save weight and complexity. However Ray, perhaps for safety, I best reconsider the execution of my power supply plan. No pun intended. Aloha, Peter, KH6CTQ From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jun 10 15:44:46 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id PAA02178 for ; Wed, 10 Jun 1998 15:44:46 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id PAA09229 for ; Wed, 10 Jun 1998 15:45:40 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA25777 for glowbugs-outgoing; Wed, 10 Jun 1998 12:07:27 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id MAA25772 for ; Wed, 10 Jun 1998 12:07:23 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id TAA19961; Wed, 10 Jun 1998 19:03:10 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806102303.TAA19961@seedlab1.cropsci.ncsu.edu> Subject: GB> Keying transistor for -30V AN/SRT-14 for FD interface (what works) To: glowbugs@piobaire.mines.uidaho.edu Date: Wed, 10 Jun 1998 19:03:10 -0400 (EDT) Cc: rdkeys@seedlab1.cropsci.ncsu.edu (User RDKEYS Robert D. Keys) X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I am needing a keying transistor for the SRT-14 for FD, and was thinking of a 10 watt audio thing generically. I found a 2N4443 in the junk box. Anyone got a spec for that as to voltage rating and PNP or NPN? (or is it something strange else?) I know, I should use a relay, but logging computers that the bosses want to use don't take comfy to keying the heft of an SRT-14, even on relays .....(:+{{... Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jun 10 15:44:52 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id PAA02184 for ; Wed, 10 Jun 1998 15:44:51 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id PAA07154 for ; Wed, 10 Jun 1998 15:45:46 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA25861 for glowbugs-outgoing; Wed, 10 Jun 1998 12:15:02 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from main.aeneas.net (root@main.aeneas.net [207.203.176.23]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id MAA25851 for ; Wed, 10 Jun 1998 12:14:57 -0700 (PDT) Received: from [207.203.177.31] (pmj316.aeneas.net [207.203.177.31]) by main.aeneas.net (8.6.12/8.6.9) with SMTP id OAA20337; Wed, 10 Jun 1998 14:17:37 -0500 X-Sender: w5hvv@mail.aeneas.net Message-Id: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Wed, 10 Jun 1998 14:14:34 +0600 To: BOATANCHORS@listserv.tempe.gov, glowbugs@piobaire.mines.uidaho.edu From: w5hvv@aeneas.net (Roderick M. Fitz-Randolph) Subject: GB> Stancor & Thordarson Transformers Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Does anyone know where I might get the specs on all of the Stancor, Thordarson, Merit (any other) transformers of the 1945 to 1975 era? Rod, N5HV w5hvv@aeneas.net From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jun 10 15:53:49 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id PAA02193 for ; Wed, 10 Jun 1998 15:53:48 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id PAA00879 for ; Wed, 10 Jun 1998 15:54:43 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA25951 for glowbugs-outgoing; Wed, 10 Jun 1998 12:20:33 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id MAA25944 for ; Wed, 10 Jun 1998 12:20:29 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id TAA19979; Wed, 10 Jun 1998 19:16:17 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806102316.TAA19979@seedlab1.cropsci.ncsu.edu> Subject: GB> Re: Keying transistor for -30V AN/SRT-14 for FD interface (what works) In-Reply-To: <199806102303.TAA19961@seedlab1.cropsci.ncsu.edu> from "User Rdkeys Robert D. Keys" at "Jun 10, 98 07:03:10 pm" To: rdkeys@seedlab1.cropsci.ncsu.edu (User Rdkeys Robert D. Keys) Date: Wed, 10 Jun 1998 19:16:16 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > I am needing a keying transistor for the SRT-14 for FD, and was thinking of > a 10 watt audio thing generically. I found a 2N4443 in the junk box. > Anyone got a spec for that as to voltage rating and PNP or NPN? > (or is it something strange else?) > > I know, I should use a relay, but logging computers that the bosses want > to use don't take comfy to keying the heft of an SRT-14, even on relays > .....(:+{{... > > Bob/NA4G Following it along.... if a keying circuit uses a 2N2222 NPN thing to key a positive line, switching the NPN for a PNP will make it key a negative line..... Y/N? Any other strangeness required? I was thinking of building a dongle box that would have both PNP and an NPN keyer transistors and then be able to plug into either depending upon which BA/GB rig happened to be up at the time. Also, one could make it key several things at once, like the rigs, the changeover relays, and whatnot. I was thinking a box with 4 ports of + keying and 4 of - keying might be generally useful for BA/GB funzies at FD. The com1 port ought to fan out that many loads easily if I am thinking correctly. The keying lines should be capable of keying almost any BA/GB setup, so what would be recommended heavyweight transistors for say at least 1-10 amps keying current, and voltages up to 40 or 100 or 200V? Thoughts and comments appreciated. I am sure someone has done this kind of nonsense, before.....(:+}}..... Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jun 10 16:05:10 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id QAA02206 for ; Wed, 10 Jun 1998 16:05:10 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id QAA18035 for ; Wed, 10 Jun 1998 16:06:05 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA26197 for glowbugs-outgoing; Wed, 10 Jun 1998 12:30:21 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from darius.concentric.net (darius.concentric.net [207.155.184.79]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id MAA26190 for ; Wed, 10 Jun 1998 12:30:15 -0700 (PDT) Received: from mcfeely.concentric.net (mcfeely.concentric.net [207.155.184.83]) by darius.concentric.net (8.8.8/(98/04/23 5.10)) id PAA21571; Wed, 10 Jun 1998 15:29:51 -0400 (EDT) [1-800-745-2747 The Concentric Network] Received: from ts002d19.alq-nm.concentric.net (ts002d19.alq-nm.concentric.net [206.173.164.55]) by mcfeely.concentric.net (8.8.8) id PAA18068; Wed, 10 Jun 1998 15:29:47 -0400 (EDT) Message-Id: <1.5.4.32.19980610192657.0069ce98@pop3.concentric.net> X-Sender: jdport@pop3.concentric.net X-Mailer: Windows Eudora Light Version 1.5.4 (32) Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Wed, 10 Jun 1998 13:26:57 -0600 To: rdkeys@seedlab1.cropsci.ncsu.edu, glowbugs@piobaire.mines.uidaho.edu From: DEVCOM Subject: Re: GB> Keying transistor for -30V AN/SRT-14 for FD interface (what works) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO At 07:03 PM 6/10/98 -0400, you wrote: >I am needing a keying transistor for the SRT-14 for FD, and was thinking of >a 10 watt audio thing generically. I found a 2N4443 in the junk box. >Anyone got a spec for that as to voltage rating and PNP or NPN? Bob, that crosses in my ECG cross reference to an ECG5446: SCR-400 VRM, 8.0 A If you need pinout, let me know. Jim W5AOX From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jun 10 18:50:49 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id SAA02309 for ; Wed, 10 Jun 1998 18:50:49 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id SAA02562 for ; Wed, 10 Jun 1998 18:51:44 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id PAA29034 for glowbugs-outgoing; Wed, 10 Jun 1998 15:13:19 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from Rt66.com (mack.rt66.com [198.59.162.1]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id PAA29025 for ; Wed, 10 Jun 1998 15:13:12 -0700 (PDT) From: msix@rt66.com Received: from localhost (msix@localhost) by Rt66.com (8.8.7/8.8.6) with SMTP id QAA02250; Wed, 10 Jun 1998 16:10:06 -0600 (MDT) Date: Wed, 10 Jun 1998 16:10:05 -0600 (MDT) To: "Roderick M. Fitz-Randolph" cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Stancor & Thordarson Transformers In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > Does anyone know where I might get the specs on all of the Stancor, > Thordarson, Merit (any other) transformers of the 1945 to 1975 era? > Rod, N5HV If you need specs on an xfmr, I'll see if its in old 50s/60s catalogs. Most xfmrs of interest to hams is... 73 - John W7ZFB at msix@rt66.com 1400 Catron SE Albq, NM 87123 *********************************************************** * Homebrewer since 1947 CW BoatAnchors Norcal #930 * * Want Halli SR150/400/2000 Xcvrs, dead or alive * * Want Elmac PMR-7 Receiver * *********************************************************** From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jun 10 19:56:13 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id TAA02345 for ; Wed, 10 Jun 1998 19:56:13 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id TAA06221 for ; Wed, 10 Jun 1998 19:57:10 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id QAA29800 for glowbugs-outgoing; Wed, 10 Jun 1998 16:27:45 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from admin.aurora.edu (admin.aurora.edu [192.203.224.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id QAA29789 for ; Wed, 10 Jun 1998 16:27:40 -0700 (PDT) Received: from localhost (broehrig@localhost) by admin.aurora.edu (8.8.8/8.8.8) with SMTP id SAA10237; Wed, 10 Jun 1998 18:22:54 -0500 Date: Wed, 10 Jun 1998 18:22:54 -0500 (CDT) From: Bob Roehrig To: "User Rdkeys Robert D. Keys" cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Re: Keying transistor for -30V AN/SRT-14 for FD interface (what works) In-Reply-To: <199806102316.TAA19979@seedlab1.cropsci.ncsu.edu> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Opto-isolators would be good devices to use. One may end up needing bipolar supplies to power it all but that can be small. When I have built keyers (usually using the Curtis 4044 type chips) so far I have always put a relay in the output - that way the polarity of the rig's key jack doesn't matter. But no matter wether you use a relay or a transistor, be sure and include an R-C "snubber" in case you are keying a reactive load. "Nostalgia is a thing of the past" E-mail broehrig@admin.aurora.edu 73 de Bob, K9EUI CIS: Data / Telecom Aurora University, Aurora, IL 630-844-4898 Fax 630-844-5530 From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jun 10 20:05:42 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id UAA02354 for ; Wed, 10 Jun 1998 20:05:41 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id UAA23772 for ; Wed, 10 Jun 1998 20:06:39 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id QAA29953 for glowbugs-outgoing; Wed, 10 Jun 1998 16:35:07 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.csonline.net (mail.csonline.net [206.101.113.7]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id QAA29947 for ; Wed, 10 Jun 1998 16:35:04 -0700 (PDT) Received: from jane-s-acer [206.101.113.110] by mail.csonline.net (SMTPD32-4.03) id A88F8FB1011C; Wed, 10 Jun 1998 19:36:47 EDT Message-Id: <1.5.4.32.19980610233747.006733f4@csonline.net> X-Sender: lmrnb@csonline.net X-Mailer: Windows Eudora Light Version 1.5.4 (32) Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Wed, 10 Jun 1998 19:37:47 -0400 To: glowbugs@piobaire.mines.uidaho.edu From: Lee Richey Subject: Re: GB> Re: Keying transistor for -30V AN/SRT-14 for FD interface (what works) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO At 07:16 PM 6/10/98 -0400, you wrote: >> I am needing a keying transistor for the SRT-14 for FD, and was thinking of >> a 10 watt audio thing generically. I found a 2N4443 in the junk box. > >Following it along.... if a keying circuit uses a 2N2222 NPN thing to key >a positive line, switching the NPN for a PNP will make it key a negative >line..... Y/N? Any other strangeness required? > >I was thinking of building a dongle box that would have both PNP and >an NPN keyer transistors and then be able to plug into either depending >upon which BA/GB rig happened to be up at the time. Also, one could >make it key several things at once, like the rigs, the changeover relays, >and whatnot. I was thinking a box with 4 ports of + keying and 4 of - >keying might be generally useful for BA/GB funzies at FD. The com1 port >ought to fan out that many loads easily if I am thinking correctly. > >The keying lines should be capable of keying almost any BA/GB setup, >so what would be recommended heavyweight transistors for say at least >1-10 amps keying current, and voltages up to 40 or 100 or 200V? > >Thoughts and comments appreciated. I am sure someone has done this kind >of nonsense, before.....(:+}}..... > >Bob/NA4G > I don't pretend to know what it takes to key a SRT-14, but in all the cases I've encountered, negative keying has been grid block keying and the keying current has been only a few mils. On the other hand, positive keying of glow in the dark equipment has mostly been cathode keying and can be in the hundreds of mils. With that in mind, check out the "Vintage Radio T/R Adapter" in the '97 or '98 ARRL Handbook. In the '97 edition it is on page 22.21. The positive keying is handled by a pretty robust FET. The IRF710 can switch several amps and can block several hundred volts. Nice for cathode keying. The MPSA92 is a TO-92 PNP that can switch a few tens of mils and block several hundred volts. Making up a circuit comprised of multiple copies of Q4, Q5 and Q6 would make a pretty handy keying box. To key, just pull the open end of R9 to ground. If anyone does not have access to a late Handbook, I have the original circuit in CIRCAD format and would be happy to post it. If you want to sequence antennas, etc, build the whole thing. It works great. -Lee WA3FIY- if anyone would like a copy From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jun 10 20:26:52 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id UAA02369 for ; Wed, 10 Jun 1998 20:26:52 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id UAA21014 for ; Wed, 10 Jun 1998 20:27:49 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id RAA00658 for glowbugs-outgoing; Wed, 10 Jun 1998 17:00:51 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.csonline.net (mail.csonline.net [206.101.113.7]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id RAA00653 for ; Wed, 10 Jun 1998 17:00:46 -0700 (PDT) Received: from jane-s-acer [206.101.113.110] by mail.csonline.net (SMTPD32-4.03) id AE92946800F6; Wed, 10 Jun 1998 20:02:26 EDT Message-Id: <1.5.4.32.19980611000326.0067f7b0@csonline.net> X-Sender: lmrnb@csonline.net X-Mailer: Windows Eudora Light Version 1.5.4 (32) Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Wed, 10 Jun 1998 20:03:26 -0400 To: glowbugs@piobaire.mines.uidaho.edu From: Lee Richey Subject: Re: GB> Re: Keying transistor for -30V AN/SRT-14 for FD interface (what works) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO At 04:48 PM 6/10/98 -0700, you wrote: >> If anyone does not have access to a late Handbook, I have the original >> circuit in CIRCAD format and would be happy to post it. >> >I would REALLY like a copy. What do you need from me? An SASE ? > >Ken W7EKB > A SASE would be fine. Send to: Radio Adventures Co. R.D.#4 Box 240 Franklin, Pa. 16323 -OR- depending on the policies of the keepers of this group, I could post the schematic as an attachment to an e-mail message. It would be approx 20-30K and would require CIRCAD to read, print, etc. I don't want to post it though if the size would be a problem of if folks have problems with attachments. -Lee WA3FIY- From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jun 11 00:19:45 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id AAA02488 for ; Thu, 11 Jun 1998 00:19:45 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id AAA14127 for ; Thu, 11 Jun 1998 00:20:44 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id UAA03055 for glowbugs-outgoing; Wed, 10 Jun 1998 20:40:44 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from main.aeneas.net (root@main.aeneas.net [207.203.176.23]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id UAA03050 for ; Wed, 10 Jun 1998 20:40:38 -0700 (PDT) Received: from [207.203.177.53] (pmj338.aeneas.net [207.203.177.53]) by main.aeneas.net (8.6.12/8.6.9) with SMTP id WAA17825; Wed, 10 Jun 1998 22:43:07 -0500 X-Sender: w5hvv@mail.aeneas.net Message-Id: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Wed, 10 Jun 1998 22:40:02 +0600 To: BOATANCHORS@listserv.tempe.gov, glowbugs@piobaire.mines.uidaho.edu From: w5hvv@aeneas.net (Roderick M. Fitz-Randolph) Subject: GB> Fierce 1-Watter Succeeds Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Wonder of wonders! My Fierce One Watter managed to get thru to KB9GRN in Springfield, IN with a 589; AA4YW in Atlanta with a 569; and W7QQQ in Albuquerque (?) with a 449 this evening! The Fierce One Watter is a 117L7/M7GT that runs on house current and is keyed via a 12 volt reed relay. 12 volts on the key is the highest voltage anywhere. It actually puts out close to 1.5 watts..... that's what makes it so Fierce!!! Lotsa fun. Maybe I'll get that TBS-50D power supply going pretty quick (if I can find a suitable transformer) and can put out some real power! Also, the DX-60 might do better as well..... but somehow it is more fun to send a message with something I've put together myself! See ya on the bands..... especially 7118-7120 Kc... er, KHz. Rod, N5HV w5hvv@aeneas.net From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jun 11 06:14:42 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id GAA02671 for ; Thu, 11 Jun 1998 06:14:41 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id GAA02898 for ; Thu, 11 Jun 1998 06:15:46 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id CAA06225 for glowbugs-outgoing; Thu, 11 Jun 1998 02:47:38 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from ms1.nwla.com (root@[207.22.207.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id CAA06220 for ; Thu, 11 Jun 1998 02:47:35 -0700 (PDT) From: w5sum@ms1.nwla.com Received: from w5sum.nwla.com (ppp16.nwla.com [207.22.207.30]) by ms1.nwla.com (8.7.5/8.7.3) with SMTP id EAA14554; Thu, 11 Jun 1998 04:47:12 -0500 Message-Id: <199806110947.EAA14554@ms1.nwla.com> To: boatanchors@theporch.com Date: Thu, 11 Jun 1998 04:52:22 +0000 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: GB> Dial Covers CC: glowbugs@piobaire.mines.uidaho.edu, baswaplist@foothill.net Priority: normal Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Howdy y'all what is the persons name that molds the plastic dial covers? I know they in Arkansas... I need one for my newly acquired RME DB20. also, I put a new paint job on this baby. Someone had painted it before and panel lettering is gone. What is the best way to replace the lettering? Is someone still make dry transfer decals? Ronnie W5SUM - Ronnie Hull PO Box 8941 Shreveport, La 71148 From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jun 11 10:23:27 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id KAA02835 for ; Thu, 11 Jun 1998 10:23:23 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id KAA20877 for ; Thu, 11 Jun 1998 10:24:31 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id GAA07846 for glowbugs-outgoing; Thu, 11 Jun 1998 06:46:48 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id GAA07841 for ; Thu, 11 Jun 1998 06:46:44 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id NAA01110; Thu, 11 Jun 1998 13:42:36 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806111742.NAA01110@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> Re: Keying transistor for -30V AN/SRT-14 for FD interface (what works) In-Reply-To: <1.5.4.32.19980610233747.006733f4@csonline.net> from Lee Richey at "Jun 10, 98 07:37:47 pm" To: lee@radioadv.com (Lee Richey) Date: Thu, 11 Jun 1998 13:42:36 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > I don't pretend to know what it takes to key a SRT-14, but in all the > cases I've encountered, negative keying has been grid block keying and > the keying current has been only a few mils. On the other hand, positive > keying of glow in the dark equipment has mostly been cathode keying and > can be in the hundreds of mils. With that in mind, check out the > "Vintage Radio T/R Adapter" in the '97 or '98 ARRL Handbook. In the '97 > edition it is on page 22.21. I had noticed that thing, and though it might be good to try sometime. Most of what I do keys by relays off the bugs. The SRT-14 is a very interesting beast. It uses grid block keying at 50-400wpm. At hand keying it uses relays. Both operate off a -30v line. The grid block keying is just a voltage transient, and is no problem. The relay keying keys about a 200ma relay load. For insurance, figure a 1 amp load plus the inductive kick. In the past I have been using mercury wetted reeds off the com port data transmit line (pins 2 and 7). That works for 12 volt reeds with only a keying polarity diode required. Simple, and it does not require any keying transistors. The reeds unfortunately burn up if the keying current is too high. The SRT-14 is marginal on the reeds if keying its relay loads. It is fine on the grid block mode. The relays handle most of the other BA/GB things except where heavy cathode currents exist or where extremely high grid blocking voltages occur. That was making me want to solid state the classic '45 tube keyer kind of thing. An FET would be the ideal thingie to use. > The positive keying is handled by a pretty robust FET. The IRF710 can > switch several amps and can block several hundred volts. Nice for > cathode keying. The MPSA92 is a TO-92 PNP that can switch a few tens of > mils and block several hundred volts. Do either of these translate into a ratshack garden variety transistor, or do I need to go to the radio warehouses? We only have one radio warehouse in town anymore, and they often don't stock much in the way of discrete parts, so I have to think very generic. > Making up a circuit comprised of multiple copies of Q4, Q5 and Q6 would > make a pretty handy keying box. To key, just pull the open end of R9 > to ground. That is the general gist of what I was aiming for. > If you want to sequence antennas, etc, build the whole thing. It works > great. Other than the keying lines, only one antenna relay line would be required, and I use a switched capacitor network for the timing on it, so a keying transistor with the capacitor timing load is all that is required there. Thanks for the tidbits.... getting there is half the fun..... Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jun 11 10:40:21 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id KAA02856 for ; Thu, 11 Jun 1998 10:40:21 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id KAA25501 for ; Thu, 11 Jun 1998 10:41:29 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA07991 for glowbugs-outgoing; Thu, 11 Jun 1998 07:01:37 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id HAA07986 for ; Thu, 11 Jun 1998 07:01:33 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id NAA01154; Thu, 11 Jun 1998 13:57:29 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806111757.NAA01154@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> Re: Keying transistor for -30V AN/SRT-14 for FD interface (what works) In-Reply-To: from Bob Roehrig at "Jun 10, 98 06:22:54 pm" To: broehrig@admin.aurora.edu (Bob Roehrig) Date: Thu, 11 Jun 1998 13:57:29 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > But no matter wether you use a relay or a > transistor, be sure and include an R-C "snubber" in case you are keying > a reactive load. What values do you find appropriate on your setups? Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jun 11 12:25:06 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id MAA02932 for ; Thu, 11 Jun 1998 12:25:06 GMT Received: from piobaire.mines.uidaho.edu (piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id MAA05598 for ; Thu, 11 Jun 1998 12:26:13 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA08685 for glowbugs-outgoing; Thu, 11 Jun 1998 07:52:18 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id HAA08680 for ; Thu, 11 Jun 1998 07:52:12 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id OAA01252; Thu, 11 Jun 1998 14:48:05 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806111848.OAA01252@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> Fierce 1-Watter Succeeds --- KUDOS! In-Reply-To: from "Roderick M. Fitz-Randolph" at "Jun 10, 98 10:40:02 pm" To: w5hvv@aeneas.net (Roderick M. Fitz-Randolph) Date: Thu, 11 Jun 1998 14:48:05 -0400 (EDT) Cc: BOATANCHORS@listserv.tempe.gov, glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > Wonder of wonders! My Fierce One Watter managed to get thru to KB9GRN > in Springfield, IN with a 589; AA4YW in Atlanta with a 569; and W7QQQ > in Albuquerque (?) with a 449 this evening! Fearsome! SNDS FB OM.... KUDOS > The Fierce One Watter is a 117L7/M7GT that runs on house current and is > keyed via a 12 volt reed relay. 12 volts on the key is the highest > voltage anywhere. It actually puts out close to 1.5 watts..... that's > what makes it so Fierce!!! I am glad you are keying with a relay, for safety's sake. Amazing what a puny pfwattie or two can do when the bands be hot, an' tha brass be pounding..... I sense something like a pair of 12A6's or a single 25L6 or such might make a companion using an ARCUS-FIVUS RX dyno as its power with a pair of batteries at 28 volties de electron. Maybe a pair of 50L6's or such might work, too, with a couple of volts resistor drop in the filament line. > See ya on the bands..... especially 7118-7120 Kc... er, KHz. Why don't you fire it up for the Vintage FD, this weekend? > Rod, N5HV > w5hvv@aeneas.net Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jun 11 13:01:18 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id MAA02952 for ; Thu, 11 Jun 1998 12:59:56 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id NAA31492 for ; Thu, 11 Jun 1998 13:01:05 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA09347 for glowbugs-outgoing; Thu, 11 Jun 1998 08:55:29 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from getnet.com (gn2.getnet.com [207.254.1.12]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id IAA09340 for ; Thu, 11 Jun 1998 08:55:15 -0700 (PDT) Received: from Hal.getnet.com (ppp172-115.getnet.com [206.124.172.115]) by getnet.com (8.8.8/8.8.7) with ESMTP id IAA05969; Thu, 11 Jun 1998 08:54:55 -0700 (MST) Message-Id: <199806111554.IAA05969@getnet.com> Reply-To: From: "H. Jack Meadows" To: , , "Roderick M. Fitz-Randolph" Subject: Re: GB> Fierce 1-Watter Succeeds Date: Thu, 11 Jun 1998 08:53:52 -0700 X-MSMail-Priority: Normal X-Priority: 3 X-Mailer: Microsoft Internet Mail 4.70.1155 MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO ---------- > From: Roderick M. Fitz-Randolph > To: BOATANCHORS@listserv.tempe.gov; glowbugs@piobaire.mines.uidaho.edu > Subject: GB> Fierce 1-Watter Succeeds > Date: Wednesday, June 10, 1998 9:40 AM > > Wonder of wonders! My Fierce One Watter managed to get thru to KB9GRN > in Springfield, IN with a 589; AA4YW in Atlanta with a 569; and W7QQQ > in Albuquerque (?) with a 449 this evening! Way to go, Rod! When I worked you last night, I didn't realize you were running QRP with a 117L7 one tuber! What is your antenna? Let's do it again soon. Best regards, Jack W7QQQ Mesa, AZ > > The Fierce One Watter is a 117L7/M7GT that runs on house current and is > keyed via a 12 volt reed relay. 12 volts on the key is the highest > voltage anywhere. It actually puts out close to 1.5 watts..... that's > what makes it so Fierce!!! > > Lotsa fun. Maybe I'll get that TBS-50D power supply going pretty quick > (if I can find a suitable transformer) and can put out some real power! > > Also, the DX-60 might do better as well..... but somehow it is more fun > to send a message with something I've put together myself! > > See ya on the bands..... especially 7118-7120 Kc... er, KHz. > > Rod, N5HV > w5hvv@aeneas.net > > From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jun 11 13:11:30 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id NAA02971 for ; Thu, 11 Jun 1998 13:11:29 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id NAA14998 for ; Thu, 11 Jun 1998 13:12:39 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA09569 for glowbugs-outgoing; Thu, 11 Jun 1998 09:09:12 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from getnet.com (gn2.getnet.com [207.254.1.12]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA09560 for ; Thu, 11 Jun 1998 09:09:05 -0700 (PDT) Received: from Hal.getnet.com (ppp172-115.getnet.com [206.124.172.115]) by getnet.com (8.8.8/8.8.7) with ESMTP id JAA06918; Thu, 11 Jun 1998 09:07:23 -0700 (MST) Message-Id: <199806111607.JAA06918@getnet.com> Reply-To: From: "H. Jack Meadows" To: "User Rdkeys Robert D. Keys" , "Lee Richey" Cc: Subject: Re: GB> Re: Keying transistor for -30V AN/SRT-14 for FD interface (what works) Date: Thu, 11 Jun 1998 09:06:20 -0700 X-MSMail-Priority: Normal X-Priority: 3 X-Mailer: Microsoft Internet Mail 4.70.1155 MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO ---------- > > > The positive keying is handled by a pretty robust FET. The IRF710 can > > switch several amps and can block several hundred volts. Nice for > > cathode keying. The MPSA92 is a TO-92 PNP that can switch a few tens of > > mils and block several hundred volts. > > Do either of these translate into a ratshack garden variety transistor, > or do I need to go to the radio warehouses? We only have one radio > warehouse in town anymore, and they often don't stock much in the way of > discrete parts, so I have to think very generic. > > Thanks for the tidbits.... getting there is half the fun..... > > Bob/NA4G I am using a keying interface that may be of use to you. It will key all my BA's and solid state rigs... everything. For negative voltages, grid block, keying I just add a crosswired plug in the line. It's nice to be able to plug my bug or keyer into ANY rig. The circuit uses a 2SC1308 horizontal deflection transistor. Radio Shack has em for five bucks. The NPN transistor is rated at 1500 volts and is a high energy device capable of switching big cathode keyed tubes. The circuit is Figure 4 on page 19-5 of my 1994 ARRL handbook. I built mine in a small box with four AA batteries. Handy dandy and portable. Best regards, Jack W7QQQ From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jun 11 14:19:21 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id OAA03057 for ; Thu, 11 Jun 1998 14:19:20 GMT Received: from piobaire.mines.uidaho.edu (piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id OAA23846 for ; Thu, 11 Jun 1998 14:20:30 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA10599 for glowbugs-outgoing; Thu, 11 Jun 1998 10:12:31 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from dogbert.xroads.com (dogbert.xroads.com [206.222.124.36]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id KAA10586 for ; Thu, 11 Jun 1998 10:12:15 -0700 (PDT) Received: from wturansk-mobl.ch.intel.com (slip50.xroads.com [206.222.125.84]) by dogbert.xroads.com (8.8.5/8.8.5) with SMTP id KAA03276; Thu, 11 Jun 1998 10:11:45 -0700 (MST) Message-Id: <3.0.5.32.19980611101040.01110270@mail.xroads.com> X-Sender: turansky@mail.xroads.com X-Mailer: QUALCOMM Windows Eudora Light Version 3.0.5 (32) Date: Thu, 11 Jun 1998 10:10:40 -0700 To: From: Walt Turansky Subject: Re: GB> Re: Keying transistor for -30V AN/SRT-14 for FD interface (what works) Cc: glowbugs@piobaire.mines.uidaho.edu In-Reply-To: <199806111607.JAA06918@getnet.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Jack, Are you using this arrangement for the 813 xtal oscillator? >I am using a keying interface that may be of use to you. It will key all my >BA's and solid state rigs... >everything. For negative voltages, grid block, keying I just add a >crosswired plug in the line. It's >nice to be able to plug my bug or keyer into ANY rig. The circuit uses a >2SC1308 horizontal >deflection transistor. Radio Shack has em for five bucks. The NPN >transistor is rated at 1500 >volts and is a high energy device capable of switching big cathode keyed >tubes. The circuit is >Figure 4 on page 19-5 of my 1994 ARRL handbook. I built mine in a small box >with four >AA batteries. Handy dandy and portable. > >Best regards, >Jack W7QQQ > > 73 de KW7WT, Walt From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jun 11 15:11:38 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id PAA03101 for ; Thu, 11 Jun 1998 15:11:38 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id PAA28471 for ; Thu, 11 Jun 1998 15:12:47 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id LAA11348 for glowbugs-outgoing; Thu, 11 Jun 1998 11:10:13 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from admin.aurora.edu (admin.aurora.edu [192.203.224.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id LAA11327 for ; Thu, 11 Jun 1998 11:10:03 -0700 (PDT) Received: from localhost (broehrig@localhost) by admin.aurora.edu (8.8.8/8.8.8) with SMTP id NAA06780; Thu, 11 Jun 1998 13:06:10 -0500 Date: Thu, 11 Jun 1998 13:06:10 -0500 (CDT) From: Bob Roehrig To: "User Rdkeys Robert D. Keys" cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Re: Keying transistor for -30V AN/SRT-14 for FD interface (what works) In-Reply-To: <199806111757.NAA01154@seedlab1.cropsci.ncsu.edu> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On Thu, 11 Jun 1998, User Rdkeys Robert D. Keys wrote: > > But no matter wether you use a relay or a > > transistor, be sure and include an R-C "snubber" in case you are keying > > a reactive load. > > What values do you find appropriate on your setups? > > Bob/NA4G I have a chart that gives recomended values that maybe I can put in a form to post here - I'll work on that. One of the favorite snubbers used by Western Electric was called the 185A network. I believe it was a 560 ohm resistor in series with .1uf. A lot of the circuits that used this were TTY loops and other relays run off 28 to 48 volts. The actual values are not real critical. The R-C snubber is used across contacts (or Collector to emitter when a switching transistor is used). The cap is the main component and the resistor is there mainly to act as a current limiter to reduce the arc when the contacts close. Depending on circumstances, I have used caps as big as 1uf and resistors as low as 10 ohms. Another way to prevent arcing is to put a diode across a relay coil. The disadvantage there is that the diode slows down the release of the relay. This obviosly would not work in a hi speed keying circuit such as across TTY selector magnets. "Nostalgia is a thing of the past" E-mail broehrig@admin.aurora.edu 73 de Bob, K9EUI CIS: Data / Telecom Aurora University, Aurora, IL 630-844-4898 Fax 630-844-5530 From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jun 11 16:23:32 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id QAA03161 for ; Thu, 11 Jun 1998 16:23:23 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id QAA22995 for ; Thu, 11 Jun 1998 16:24:34 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA00360 for glowbugs-outgoing; Thu, 11 Jun 1998 12:44:03 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.xmission.com (mail.xmission.com [198.60.22.22]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id MAA00355 for ; Thu, 11 Jun 1998 12:43:59 -0700 (PDT) Received: from slc453h.modem.xmission.com (xmission.com) [166.70.2.199] by mail.xmission.com with esmtp (Exim 1.82 #2) id 0ykDGJ-0005RR-00; Thu, 11 Jun 1998 13:43:52 -0600 Message-ID: <357FDF33.A6D812DE@xmission.com> Date: Thu, 11 Jun 1998 13:44:20 +0000 From: Dexter Francis Reply-To: cwest@xmission.com Organization: CWest Tube Sales X-Mailer: Mozilla 4.05 (Macintosh; I; PPC) MIME-Version: 1.0 To: "BOATANCHORS@LISTSERV.TEMPE.GOV" , glowbugs@piobaire.mines.uidaho.edu Subject: GB> Another 1 tube Tx project... References: <199806111848.OAA01252@seedlab1.cropsci.ncsu.edu> Content-Type: text/plain; charset=us-ascii; x-mac-type="54455854"; x-mac-creator="4D4F5353" Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Greetings all - In harmony with the current interest in one tube transmitters, I have added to the home page the single tube 6L6 Transmitter project from the 10th Edition (1946) of ARRL's "How to Become a Radio Amateur". Enjoy -df *** CWest - P.O. Box 22443 Salt Lake City, Utah 84122 *** Visit our Web Page @ http://www.xmission.com/~cwest From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jun 11 17:25:02 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id RAA03197 for ; Thu, 11 Jun 1998 17:24:57 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id RAA02378 for ; Thu, 11 Jun 1998 17:26:10 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id NAA01100 for glowbugs-outgoing; Thu, 11 Jun 1998 13:42:46 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail1.monumental.com (mail1.mnsinc.com [206.55.3.18]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id NAA01095 for ; Thu, 11 Jun 1998 13:42:42 -0700 (PDT) Received: from COMPUTER (a0017.bethesda.mns.net [206.239.105.49]) by mail1.monumental.com (8.8.8/8.8.8) with SMTP id QAA25457 for ; Thu, 11 Jun 1998 16:38:36 -0400 (EDT) Message-Id: <199806112038.QAA25457@mail1.monumental.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: glowbugs@piobaire.mines.uidaho.edu Date: Thu, 11 Jun 1998 16:33:30 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: GB> Re: Keying transistor for -30V AN/SRT-14 for FD Reply-to: bry@mnsinc.com Priority: normal X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Relays? Reed Relays - yeah but then you get either a busted reed, since they can't handle the cathode current of a BA, OR you use a conventional relay and get lots of clunking sounds as you key. That racket gets old in a hurry at 30 wpm, and then they start failing too... AFter months of experimenting with three-legged fuses of various types and sizes, AND with mercury wetted relays of various types, I FINALLY found something that will work with almost ANY BA rig! The BEST solution is a TO Keyer! Bry On 10 Jun 98 at 18:22, Bob wrote: > Opto-isolators would be good devices to use. One may end up > needing bipolar supplies to power it all but that can be > small. When I have built keyers (usually using the Curtis 4044 > type chips) so far I have always put a relay in the output - > that way the polarity of the rig's key jack doesn't matter. > But no matter wether you use a relay or a transistor, be sure > and include an R-C "snubber" in case you are keying a reactive > load. > > "Nostalgia is a thing of the past" > E-mail broehrig@admin.aurora.edu 73 de Bob, > K9EUI > CIS: Data / Telecom Aurora University, Aurora, > IL > 630-844-4898 Fax 630-844-5530 From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jun 11 18:37:22 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id SAA03236 for ; Thu, 11 Jun 1998 18:37:22 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id SAA28524 for ; Thu, 11 Jun 1998 18:38:34 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id OAA01851 for glowbugs-outgoing; Thu, 11 Jun 1998 14:54:38 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id OAA01845; Thu, 11 Jun 1998 14:54:33 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Thu, 11 Jun 1998 14:54:32 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: Brian Carling cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Re: Keying transistor for -30V AN/SRT-14 for FD In-Reply-To: <199806112038.QAA25457@mail1.monumental.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > AFter months of experimenting with three-legged fuses of various > types and sizes, AND with mercury wetted relays of various > types, I FINALLY found something that will work with almost ANY > BA rig! > > The BEST solution is a TO Keyer! Hmmmmmmmm.....I have a TO Keyer...but no paddles. Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jun 11 19:20:43 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id TAA03267 for ; Thu, 11 Jun 1998 19:20:43 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id TAA23266 for ; Thu, 11 Jun 1998 19:21:57 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id PAA02470 for glowbugs-outgoing; Thu, 11 Jun 1998 15:38:36 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from getnet.com (gn2.getnet.com [207.254.1.12]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id PAA02464 for ; Thu, 11 Jun 1998 15:38:32 -0700 (PDT) Received: from localhost (jackmead@localhost) by getnet.com (8.8.8/8.8.7) with SMTP id PAA14111; Thu, 11 Jun 1998 15:38:21 -0700 (MST) Date: Thu, 11 Jun 1998 15:38:21 -0700 (MST) From: Jack Meadows To: Walt Turansky cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Re: Keying transistor for -30V AN/SRT-14 for FD interface (what works) In-Reply-To: <3.0.5.32.19980611101040.01110270@mail.xroads.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On Thu, 11 Jun 1998, Walt Turansky wrote: > Jack, > > Are you using this arrangement for the 813 xtal oscillator? > Hi Walt, Yes I am using it for the 813 xtal oscillator, but the 813 circuit already has a relay keying the screen grid voltage, so the interface only has to key the screen relay. Jack - W7QQQ > > > >I am using a keying interface that may be of use to you. It will key all my > >BA's and solid state rigs... > >everything. For negative voltages, grid block, keying I just add a > >crosswired plug in the line. It's > >nice to be able to plug my bug or keyer into ANY rig. The circuit uses a > >2SC1308 horizontal > >deflection transistor. Radio Shack has em for five bucks. The NPN > >transistor is rated at 1500 > >volts and is a high energy device capable of switching big cathode keyed > >tubes. The circuit is > >Figure 4 on page 19-5 of my 1994 ARRL handbook. I built mine in a small box > >with four > >AA batteries. Handy dandy and portable. > > > >Best regards, > >Jack W7QQQ > > > > > 73 de KW7WT, > Walt > From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jun 11 20:19:37 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id UAA03299 for ; Thu, 11 Jun 1998 20:19:37 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id UAA25857 for ; Thu, 11 Jun 1998 20:20:52 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id QAA03054 for glowbugs-outgoing; Thu, 11 Jun 1998 16:35:38 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from nyct.net (root@bsd1.nyct.net [204.141.86.3]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id QAA03045 for ; Thu, 11 Jun 1998 16:35:35 -0700 (PDT) Received: from ppp65.nyct.net (ppp65.nyct.net [207.198.184.65]) by nyct.net (8.8.8/8.8.7) with SMTP id TAA24808; Thu, 11 Jun 1998 19:35:16 -0400 (EDT) (envelope-from artdeco@nyct.net) Message-Id: <3.0.5.16.19980611183402.2a07ca0e@nyct.net> X-Sender: artdeco@nyct.net X-Mailer: QUALCOMM Windows Eudora Pro Version 3.0.5 (16) Date: Thu, 11 Jun 1998 18:34:02 To: w5sum@ms1.nwla.com From: Carl Ratner Subject: Re: GB> Dial Covers Cc: glowbugs@piobaire.mines.uidaho.edu In-Reply-To: <199806110947.EAA14554@ms1.nwla.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO At 04:52 AM 6/11/98 +0000, you wrote: >Howdy y'all >what is the persons name that molds the plastic dial covers? I know >they in Arkansas... Hi Ronnie, Here 'tis: Mr. Doyle Roberts HC-63, Box 236-1 Clinton, Arkansas 72031 Here's another one: Rock-Sea Enterprises Antique Radio Dial Scales 323 E. Matilija St. #110-241 Ojai, CA 93023 http://members.aol.com/RockSeaEnt/ E-mail: dials@juno.com Phone: (805) 646-7362 73 de Carl Ratner Restorer of vintage radios and aspiring glowbugger From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jun 12 00:36:27 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id AAA03425 for ; Fri, 12 Jun 1998 00:36:27 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id AAA13783 for ; Fri, 12 Jun 1998 00:37:45 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id VAA05576 for glowbugs-outgoing; Thu, 11 Jun 1998 21:12:51 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id VAA05571 for ; Thu, 11 Jun 1998 21:12:49 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Thu, 11 Jun 1998 21:12:48 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Tube... Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO what in heck is a 3D21 ? Looks like a small triode: ST type bottle. Ken From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jun 12 02:39:49 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id CAA03487 for ; Fri, 12 Jun 1998 02:39:49 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id CAA31673 for ; Fri, 12 Jun 1998 02:41:09 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id XAA07697 for glowbugs-outgoing; Thu, 11 Jun 1998 23:23:03 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from pp.hw.ac.uk (pp@pp.hw.ac.uk [137.195.151.253]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id XAA07692 for ; Thu, 11 Jun 1998 23:23:01 -0700 (PDT) Received: from punt2.hw.ac.uk by pp.hw.ac.uk with SMTP(trusted); Fri, 12 Jun 1998 07:22:25 +0100 Received: from annexuser1.cen.hw.ac.uk (annexuser1.cen.hw.ac.uk [137.195.165.10]) by punt2.hw.ac.uk (8.8.8/8.8.8) with SMTP id HAA28328; Fri, 12 Jun 1998 07:22:19 +0100 Message-Id: <199806120622.HAA28328@punt2.hw.ac.uk> MIME-Version: 1.0 To: keng From: Bill Jarvis CC: glowbugs Date: Fri, 12 Jun 1998 07:22:13 -0600 X-Mailer: Net-Tamer 1.11 Subject: GB> Re: GB Tube... Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On 1998-06-12 keng@uidaho.edu said: what in heck is a 3D21 ? Looks like a small triode: ST type bottle. Ken An equivalent is 5B/152D. Sorry; I can't find any further reference to either. ============ ===== ===== BILL J. ===== ===== ============ GM8APX, qthr Edinburgh, Scotland, UK Splendide mendax Net-Tamer V 1.11 - Registered From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jun 12 07:55:26 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id HAA03653 for ; Fri, 12 Jun 1998 07:55:26 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id HAA00005 for ; Fri, 12 Jun 1998 07:56:50 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id EAA09724 for glowbugs-outgoing; Fri, 12 Jun 1998 04:32:44 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail1.monumental.com (mail1.mnsinc.com [206.55.3.18]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id EAA09719 for ; Fri, 12 Jun 1998 04:32:41 -0700 (PDT) Received: from COMPUTER (bry.mnsinc.com [206.239.150.65]) by mail1.monumental.com (8.8.8/8.8.8) with SMTP id HAA21643 for ; Fri, 12 Jun 1998 07:28:35 -0400 (EDT) Message-Id: <199806121128.HAA21643@mail1.monumental.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: glowbugs@piobaire.mines.uidaho.edu Date: Fri, 12 Jun 1998 07:23:23 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: GB> Attn: Glen Finerman Reply-to: bry@mnsinc.com Priority: normal In-reply-to: <1.5.4.32.19980611000326.0067f7b0@csonline.net> X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Lost track of Glen's e-mail address and his old one fails!! I sent a message and it bounced - as follows: To: gfiner@nms.com Date sent: Fri, 12 Jun 1998 Subject: GB Cookbook Hi Glen, Did you ever make any progress on that Glowbugs Cookbook? = = = Anyone know if Glen is still here, or have his new e-mail adddress? Soixante Treize - Bry, AF4K **************************************************** *** 73 from Radio AF4K/G3XLQ Gaithersburg, MD USA * ** E-mail to: bry@mnsinc.com * *** ICQ 6124470 *** ** http://www.mnsinc.com/bry/ * **************************************************** AM International #1024, TENTEN #13582. GRID FM19. Rigs: Valiant, DX-60/HG-10, FT-840, TM-261A, Harvey Wells Bandmaster, Drake 2 C. TEN-TEN #13582, DXCC #17763, Bicentennial WAS From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jun 12 09:06:23 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id JAA03690 for ; Fri, 12 Jun 1998 09:06:19 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id JAA01899 for ; Fri, 12 Jun 1998 09:07:39 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id FAA10271 for glowbugs-outgoing; Fri, 12 Jun 1998 05:35:41 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.hits.net (mail.hits.net [206.127.244.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id FAA10266 for ; Fri, 12 Jun 1998 05:35:33 -0700 (PDT) Received: from 206.127.244.114 (excalibur48.hits.net [206.127.244.114]) by mail.hits.net (8.8.8/8.8.5) with SMTP id CAA01364; Fri, 12 Jun 1998 02:34:53 -1000 (HST) Message-ID: <358107D4.7E6C@hits.net> Date: Fri, 12 Jun 1998 00:49:57 -1000 From: Peter Demmer Reply-To: ampruss@hits.net Organization: AMPRUSS Co. X-Mailer: Mozilla 3.01 (Macintosh; I; 68K) MIME-Version: 1.0 To: Jack Meadows CC: Walt Turansky , glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Re: Keying transistor for -30V AN/SRT-14 for FD interface (what works) References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Jack Meadows wrote: > > On Thu, 11 Jun 1998, Walt Turansky wrote: > > > Jack, > > > > Are you using this arrangement for the 813 xtal oscillator? > > > Hi Walt, > Yes I am using it for the 813 xtal oscillator, but the 813 circuit > already has a relay keying the screen grid voltage, so the > interface only has to key the screen relay. > > Jack - W7QQQ > > > > > > > >I am using a keying interface that may be of use to you. It will key all my > > >BA's and solid state rigs... > > >everything. For negative voltages, grid block, keying I just add a > > >crosswired plug in the line. It's > > >nice to be able to plug my bug or keyer into ANY rig. The circuit uses a > > >2SC1308 horizontal > > >deflection transistor. Radio Shack has em for five bucks. The NPN > > >transistor is rated at 1500 > > >volts and is a high energy device capable of switching big cathode keyed > > >tubes. The circuit is > > >Figure 4 on page 19-5 of my 1994 ARRL handbook. I built mine in a small box > > >with four > > >AA batteries. Handy dandy and portable. > > > > > >Best regards, > > >Jack W7QQQ > > > > > > > > 73 de KW7WT, > > Walt > > Peter wrote; HI Walt, Hi Jack. The keying ckts. you mentioned also may befound in the 1992 ARRL handbook, chapter 12 pg 11/12. I don't have the 94 version. I got diverted on the 813 effort by the way hot load soaking and of smoking two of my old HV xfmers. They just sat in dampness, under somebody house too darned long. I wound up rebuilding the power supply. Now Im using and testing HV xfmers from disgarded microwave ovens. A fellow boat anchor brother passed me an e-mail telling me there was a recent artical in ARRLs QEX spelling the procedures for just such a project. Wonder, does any one have a artical cross reference index to QEX. Im good for an instant SASE for a copy of the artical. Sure hate reinventing the stone wheel. Today I gutted and tested two. Removed (pressed out) the current limiting bars. Removed the 2.6 and in the other, the 3.1 volt maggi heater windings (two different size xfmers. Rewound one with #14 AWG Teflon multi stranded wire. Just started with 3 times the original winding and with enough extra length, I simply kept adding turns until I could read a 10.1 VAC with a 200 ohm 100 watt resistor shunt. The HV secondary indicated 1500 VAC with a 50 K @50 watt crowbar shunt. Boy that sucker (resistor) sure gets hot. However, the xfmer is like a big block of cold laminated, (TIG) Tungstan Inert Gas Welded (laminations bonding) hunk of silicon steel. Right on Jack, the variac sure helps with these tests. And TNX fer ur sketch. Roller inductor is what I have for the L as in pie-tank ckt. Tomorrow, as there is no HV CNTR tap so a full wave (bridge) is in the works. I hope to add all the other goodies S/A the 2ndry HV in rush current limiting (abt 15 ohms/25W) resistors the FWB diode stacks, the 34 mfd @4.5 KV filter cap and but of coarse, the 100k/100W bleeder. I wonder off hand, if you guys know what the cold to hot heater current for the 813 is? Lets see, 10V @5amps thats 2 ohms. Well, might as well wire up the socket and test the new heater winding while Im at it. Sure would like to get this hummer turning and burning B4 FD 98. Aloha Peter KH6CTQ From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jun 12 10:12:30 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id KAA03740 for ; Fri, 12 Jun 1998 10:12:29 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id KAA16023 for ; Fri, 12 Jun 1998 10:13:54 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id GAA11081 for glowbugs-outgoing; Fri, 12 Jun 1998 06:47:43 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id GAA11076 for ; Fri, 12 Jun 1998 06:47:39 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id NAA02619; Fri, 12 Jun 1998 13:43:34 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806121743.NAA02619@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> Re: Keying transistor for -30V AN/SRT-14 for FD interface (what works) In-Reply-To: from Bob Roehrig at "Jun 11, 98 01:06:10 pm" To: broehrig@admin.aurora.edu (Bob Roehrig) Date: Fri, 12 Jun 1998 13:43:33 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > On Thu, 11 Jun 1998, User Rdkeys Robert D. Keys wrote: > > > But no matter wether you use a relay or a > > > transistor, be sure and include an R-C "snubber" in case you are keying > > > a reactive load. > > > > What values do you find appropriate on your setups? > > > > Bob/NA4G > > I have a chart that gives recomended values that maybe I can put in a > form to post here - I'll work on that. One of the favorite snubbers used > by Western Electric was called the 185A network. I believe it was a 560 > ohm resistor in series with .1uf. A lot of the circuits that used this > were TTY loops and other relays run off 28 to 48 volts. I was trying to remember from those days but did not find it still sitting on the top of the noggin..... grey matters pfarting maybe.... Interesting. That is pretty much exactly what Big Bertha Radiomarine uses in her key lag filter. I was generically thinking 100-1000 ohms and 0.1-1.0ufd. Sounds like I am on firm ground, then. > The actual values are not real critical. The R-C snubber is used across > contacts (or Collector to emitter when a switching transistor is used). > The cap is the main component and the resistor is there mainly to act > as a current limiter to reduce the arc when the contacts close. Depending > on circumstances, I have used caps as big as 1uf and resistors as low as > 10 ohms. I was not sure how critical it might be with transistors (nil experience with them here...(:+{{...). This is a good use then for those misc 0.1-1.0 ufd 600-1000v caps from surplus. > Another way to prevent arcing is to put a diode across a relay coil. > The disadvantage there is that the diode slows down the release of the > relay. This obviosly would not work in a hi speed keying circuit > such as across TTY selector magnets. I had thought about that, but did not have good luck with diodes either. The SRT did not like diodes, and I did not like them in my antenna relay curcuits. The resistor/capacitor circuit is the way to go then. >From what you have used, I am fairly close using Big Bertha's values. As you said, it is not particularly critical. The ear will give it away if it is lagging too much. Thanks for the info..... Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jun 12 10:25:48 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id KAA03752 for ; Fri, 12 Jun 1998 10:25:48 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id KAA32041 for ; Fri, 12 Jun 1998 10:27:13 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA11330 for glowbugs-outgoing; Fri, 12 Jun 1998 07:03:13 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id HAA11325 for ; Fri, 12 Jun 1998 07:03:09 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id NAA02681; Fri, 12 Jun 1998 13:59:06 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806121759.NAA02681@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> Re: Keying transistor for -30V AN/SRT-14 for FD In-Reply-To: <199806112038.QAA25457@mail1.monumental.com> from Brian Carling at "Jun 11, 98 04:33:30 pm" To: bry@mnsinc.com Date: Fri, 12 Jun 1998 13:59:06 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > Relays? > > Reed Relays - yeah but then you get either a busted reed, since > they can't handle the cathode current of a BA, OR you use a > conventional relay and get lots of clunking sounds as you key. > That racket gets old in a hurry at 30 wpm, and then they start > failing too... > > AFter months of experimenting with three-legged fuses of various > types and sizes, AND with mercury wetted relays of various > types, I FINALLY found something that will work with almost ANY > BA rig! > > The BEST solution is a TO Keyer! > > Bry The TO uses vertical octal can mercury wetted reeds. Nice relays if you can find them. I have one, somewhere, but can't locate it. Being a bug man, I go sideways to bellyup on even a TO style thingie. I found some mercury wetted 12 volt reeds that are about 2.5 inches long and half an inch square. They seem to work pretty good. You have to mount them with the proper vertical orientation, though, to keep the mercury happy. I use a small plastic plate with the relay epoxied in place or a 35mm film canister. A touch of velcro holds it on the back of the computer somewhere. It works for most rigs, but is marginal on the SRT-14. That is why I started thinking of those ``three legged fuses'' as a last resort. I did fine several NIB 1000 volt ``3-legged-armour- plated-critters'' to try ``dead bug'' style. So, with rabbit's foot in pocket, and knocking on the noggin 3 times, it may work ok. Relays are so much more ``nice'' to use. Alas, finding the biggie mercury reeds is not so easy anymore. Mostly undertablefodder at hamfests. Bob From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jun 12 11:22:22 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id LAA03808 for ; Fri, 12 Jun 1998 11:22:22 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id LAA19470 for ; Fri, 12 Jun 1998 11:23:47 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA11616 for glowbugs-outgoing; Fri, 12 Jun 1998 07:18:46 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.xmission.com (mail.xmission.com [198.60.22.22]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id HAA11610 for ; Fri, 12 Jun 1998 07:18:42 -0700 (PDT) Received: from slc151h.modem.xmission.com (xmission.com) [166.70.9.151] by mail.xmission.com with esmtp (Exim 1.82 #2) id 0ykUex-00033C-00; Fri, 12 Jun 1998 08:18:27 -0600 Message-ID: <3580E466.93172A0@xmission.com> Date: Fri, 12 Jun 1998 08:18:47 +0000 From: Dexter Francis Reply-To: cwest@xmission.com Organization: CWest Tube Sales X-Mailer: Mozilla 4.05 (Macintosh; I; PPC) MIME-Version: 1.0 To: Bill Jarvis CC: keng , glowbugs Subject: Re: GB> Re: GB Tube... References: <199806120622.HAA28328@punt2.hw.ac.uk> Content-Type: text/plain; charset=us-ascii; x-mac-type="54455854"; x-mac-creator="4D4F5353" Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO The 3D21 is a vacuum pulse tetrode that was used in AN/UPN-3 radar sets. -df *** CWest - P.O. Box 22443 Salt Lake City, Utah 84122 *** Visit our Web Page @ http://www.xmission.com/~cwest From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jun 12 12:12:17 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id MAA03859 for ; Fri, 12 Jun 1998 12:12:17 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id MAA19380 for ; Fri, 12 Jun 1998 12:13:44 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA12116 for glowbugs-outgoing; Fri, 12 Jun 1998 08:13:08 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.xmission.com (mail.xmission.com [198.60.22.22]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id IAA12111 for ; Fri, 12 Jun 1998 08:13:03 -0700 (PDT) Received: from slc354h.modem.xmission.com (xmission.com) [166.70.2.100] by mail.xmission.com with esmtp (Exim 1.82 #2) id 0ykVVU-0000LE-00; Fri, 12 Jun 1998 09:12:45 -0600 Message-ID: <3580F12A.971BD47@xmission.com> Date: Fri, 12 Jun 1998 09:13:15 +0000 From: Dexter Francis Reply-To: cwest@xmission.com Organization: CWest Tube Sales X-Mailer: Mozilla 4.05 (Macintosh; I; PPC) MIME-Version: 1.0 To: "BOATANCHORS@LISTSERV.TEMPE.GOV" , glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Fierce 1-Watter Succeeds --- KUDOS! References: <199806111848.OAA01252@seedlab1.cropsci.ncsu.edu> Content-Type: text/plain; charset=us-ascii; x-mac-type="54455854"; x-mac-creator="4D4F5353" Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Greetings all - Just added the single tube (117L7) transmitter from Meissner's "How to Build" to the web page. Have fun! -- df *** CWest - P.O. Box 22443 Salt Lake City, Utah 84122 *** Visit our Web Page @ http://www.xmission.com/~cwest From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jun 12 14:27:20 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id OAA04047 for ; Fri, 12 Jun 1998 14:27:19 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id OAA15276 for ; Fri, 12 Jun 1998 14:28:48 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA14436 for glowbugs-outgoing; Fri, 12 Jun 1998 10:52:12 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from Rt66.com (mack.rt66.com [198.59.162.1]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id KAA14431 for ; Fri, 12 Jun 1998 10:52:10 -0700 (PDT) From: msix@rt66.com Received: from localhost (msix@localhost) by Rt66.com (8.8.7/8.8.6) with SMTP id LAA06255; Fri, 12 Jun 1998 11:49:03 -0600 (MDT) Date: Fri, 12 Jun 1998 11:49:02 -0600 (MDT) To: Brian Carling cc: gekko@nwlink.com, glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> 6E5 magic eye In-Reply-To: <199806121624.MAA06350@mail1.monumental.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Bry - Yes, they seem to appeal to GBs and BAs but if you would settle just for glow instead of a tube, a socket, parts and 8 cubic inches of space, an NE-2 with one leg hooked to the output tank and other leg floating will show max RF tuning point in lo power Txs. At higher power, put a lil cap in series. But you already knew that... 73 - John W7ZFB at msix@rt66.com 1400 Catron SE Albq, NM 87123 *********************************************************** * Homebrewer since 1947 CW BoatAnchors Norcal #930 * * Want Halli SR150/400/2000 Xcvrs, dead or alive * * Want Elmac PMR-7 Receiver * *********************************************************** From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jun 12 12:54:47 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id MAA03926 for ; Fri, 12 Jun 1998 12:54:46 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id MAA28631 for ; Fri, 12 Jun 1998 12:56:14 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA12803 for glowbugs-outgoing; Fri, 12 Jun 1998 09:28:56 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail1.monumental.com (mail1.mnsinc.com [206.55.3.18]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA12798 for ; Fri, 12 Jun 1998 09:28:53 -0700 (PDT) Received: from COMPUTER (bry.mnsinc.com [206.239.150.65]) by mail1.monumental.com (8.8.8/8.8.8) with SMTP id MAA06350; Fri, 12 Jun 1998 12:24:35 -0400 (EDT) Message-Id: <199806121624.MAA06350@mail1.monumental.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: gekko@nwlink.com, glowbugs@piobaire.mines.uidaho.edu Date: Fri, 12 Jun 1998 12:15:26 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: GB> 6E5 magic eye Reply-to: bry@mnsinc.com Priority: normal X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Hi Dave - at one time you were talking about rigging up a magic eye tube as a Glowbug TX tuning indicator. Did you ever get that going? I would like to try it too! I have a couple of them here form old command set xmtrs! 73 - Bry **************************************************** *** 73 from Radio AF4K/G3XLQ Gaithersburg, MD USA * ** E-mail to: bry@mnsinc.com * *** ICQ 6124470 *** ** http://www.mnsinc.com/bry/ * **************************************************** AM International #1024, TENTEN #13582. GRID FM19. Rigs: Valiant, DX-60/HG-10, FT-840, TM-261A, Harvey Wells Bandmaster, Drake 2 C. TEN-TEN #13582, DXCC #17763, Bicentennial WAS From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jun 12 16:04:01 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id QAA04177 for ; Fri, 12 Jun 1998 16:03:57 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id QAA24645 for ; Fri, 12 Jun 1998 16:05:26 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA15981 for glowbugs-outgoing; Fri, 12 Jun 1998 12:27:15 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from admin.aurora.edu (admin.aurora.edu [192.203.224.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id MAA15976 for ; Fri, 12 Jun 1998 12:27:12 -0700 (PDT) Received: from localhost (broehrig@localhost) by admin.aurora.edu (8.8.8/8.8.8) with SMTP id OAA25910; Fri, 12 Jun 1998 14:23:44 -0500 Date: Fri, 12 Jun 1998 14:23:43 -0500 (CDT) From: Bob Roehrig To: "User Rdkeys Robert D. Keys" cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Re: Keying transistor for -30V AN/SRT-14 for FD interface (what works) In-Reply-To: <199806121743.NAA02619@seedlab1.cropsci.ncsu.edu> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On Fri, 12 Jun 1998, User Rdkeys Robert D. Keys wrote: > I had thought about that, but did not have good luck with diodes either. > The SRT did not like diodes, and I did not like them in my antenna relay > curcuits. The resistor/capacitor circuit is the way to go then. I did not mention, which should be obvious to most of us, that diodes across relay coils to supress the inductive kick are only possible on DC circuits. "Nostalgia is a thing of the past" E-mail broehrig@admin.aurora.edu 73 de Bob, K9EUI CIS: Data / Telecom Aurora University, Aurora, IL 630-844-4898 Fax 630-844-5530 From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jun 12 16:13:10 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id QAA04187 for ; Fri, 12 Jun 1998 16:13:10 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id QAA19689 for ; Fri, 12 Jun 1998 16:14:40 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA16326 for glowbugs-outgoing; Fri, 12 Jun 1998 12:46:55 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.xmission.com (mail.xmission.com [198.60.22.22]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id MAA16321 for ; Fri, 12 Jun 1998 12:46:49 -0700 (PDT) Received: from slc128h.modem.xmission.com (xmission.com) [166.70.9.128] by mail.xmission.com with esmtp (Exim 1.82 #2) id 0ykZmF-00061T-00; Fri, 12 Jun 1998 13:46:19 -0600 Message-ID: <35813128.E551DAD@xmission.com> Date: Fri, 12 Jun 1998 13:46:21 +0000 From: Dexter Francis Reply-To: cwest@xmission.com Organization: CWest Tube Sales X-Mailer: Mozilla 4.05 (Macintosh; I; PPC) MIME-Version: 1.0 To: bry@mnsinc.com CC: gekko@nwlink.com, glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> 6E5 magic eye References: <199806121624.MAA06350@mail1.monumental.com> Content-Type: text/plain; charset=us-ascii; x-mac-type="54455854"; x-mac-creator="4D4F5353" Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO This was done in the ARC-5 Transmitters. They used a 1625 tube. -- df *** CWest - P.O. Box 22443 Salt Lake City, Utah 84122 *** Visit our Web Page @ http://www.xmission.com/~cwest From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jun 12 21:05:08 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id VAA04343 for ; Fri, 12 Jun 1998 21:05:08 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id VAA05870 for ; Fri, 12 Jun 1998 21:06:41 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id RAA19917 for glowbugs-outgoing; Fri, 12 Jun 1998 17:40:14 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from admin.aurora.edu (admin.aurora.edu [192.203.224.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id RAA19912 for ; Fri, 12 Jun 1998 17:40:11 -0700 (PDT) Received: from localhost (broehrig@localhost) by admin.aurora.edu (8.8.8/8.8.8) with SMTP id TAA10132; Fri, 12 Jun 1998 19:36:32 -0500 Date: Fri, 12 Jun 1998 19:36:32 -0500 (CDT) From: Bob Roehrig To: "User Rdkeys Robert D. Keys" cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> SNUBBERS: (was Keying transistor for -30V AN/SRT-14) In-Reply-To: <199806111757.NAA01154@seedlab1.cropsci.ncsu.edu> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I found the chart - actually a nomograph. I can send you a copy if you'd like. The values of R and C depend on the open circuit voltage. Here are a few examples from the chart: E C R (ohms) 10 .05 10 50 .1 10 200 .1 20 200 .01 80 400 .1 30 400 .01 500 The formula (if I got it right) is: R = E / (10(3.16 x sqr C)^1+50/E) "Nostalgia is a thing of the past" E-mail broehrig@admin.aurora.edu 73 de Bob, K9EUI CIS: Data / Telecom Aurora University, Aurora, IL 630-844-4898 Fax 630-844-5530 From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 13 15:02:56 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id PAA04875 for ; Sat, 13 Jun 1998 15:02:54 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id PAA16810 for ; Sat, 13 Jun 1998 15:04:40 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id LAA29765 for glowbugs-outgoing; Sat, 13 Jun 1998 11:29:12 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from admin.aurora.edu (admin.aurora.edu [192.203.224.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id LAA29758 for ; Sat, 13 Jun 1998 11:29:09 -0700 (PDT) Received: from localhost (broehrig@localhost) by admin.aurora.edu (8.8.8/8.8.8) with SMTP id NAA02313 for ; Sat, 13 Jun 1998 13:25:43 -0500 Date: Sat, 13 Jun 1998 13:25:43 -0500 (CDT) From: Bob Roehrig To: glowbugs Subject: GB> SNUBBERS - correction Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO We were talking about suppressing spikes when keying inductive loads. I took some time to use the PC to generate some values of R for various combinations of open circuit voltage (E) and the cap (C in uF). The R values are all ohms: volts: C=.01 C=.05 C=.1 C=.5 C=1 10 1 1 1 1 1 25 5 3 2 1 1 50 12 6 5 2 2 100 27 13 10 4 3 150 43 20 15 7 5 200 59 27 20 9 6 250 74 34 25 11 8 300 90 41 30 13 9 350 106 49 35 16 11 400 122 56 40 18 13 Notice that if you use a .1 uF cap, the resistance is E/10. The formula is: R=E/(10*3.16*SQR(C))^1+(50/E)) How does one choose the cap value? I dunno. "Nostalgia is a thing of the past" E-mail broehrig@admin.aurora.edu 73 de Bob, K9EUI CIS: Data / Telecom Aurora University, Aurora, IL 630-844-4898 Fax 630-844-5530 From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 13 19:55:56 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id TAA05024 for ; Sat, 13 Jun 1998 19:55:56 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id TAA21839 for ; Sat, 13 Jun 1998 19:57:45 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id QAA02108 for glowbugs-outgoing; Sat, 13 Jun 1998 16:28:03 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id QAA02103 for ; Sat, 13 Jun 1998 16:27:56 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Sat, 13 Jun 1998 16:27:56 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Info... Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I hope you guys can help on this: These are REAL boatanchors... I was called to a garage today wherein resided 3 Ea Holgar generators NIC (New In Crate). These are model number H-15230 and are a 12.5 KVA, either 120 volts single phase 104 amp, or 120/208 volt 3 phase at 34.7 amp, 60 cycle, 1800 rpm. I ***THINK*** these are the generator portion of the PE-95 10 KW generator which was used with the SCR-299/399. The lady who owns them wants to get rid of them. Does anyone know what I should offer her for them? Is $50 each too little or too much? They are really heavy. She also has a very dirty R-23/ARC-5 190-550 kc. receiver which is unmodified but missing some screws, and an even dirtier BC-1206 with what looks like a range filter attached to it. What should I offer her for those, or are they even worth buying? And she also has 6 or so what look like aircraft engine starter motors. The name plates say 24 VDC at 24 amps but they are big enough to be 2 or 3 horsepower motors. These are still wrapped in that weird paper. They weigh about 40 pounds each, and have an integral blower on the end opposite the shaft.. Any help would be appreciated. Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 13 21:34:58 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id VAA05073 for ; Sat, 13 Jun 1998 21:34:58 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id VAA31009 for ; Sat, 13 Jun 1998 21:36:48 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id RAA02725 for glowbugs-outgoing; Sat, 13 Jun 1998 17:50:45 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id RAA02720 for ; Sat, 13 Jun 1998 17:50:43 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Sat, 13 Jun 1998 17:50:42 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Vintage FD... Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO OK. What are the frequencies? I lost my list. Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 13 22:40:24 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id WAA05108 for ; Sat, 13 Jun 1998 22:39:03 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id WAA32735 for ; Sat, 13 Jun 1998 22:40:54 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id SAA03210 for glowbugs-outgoing; Sat, 13 Jun 1998 18:56:05 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.hits.net (mail.hits.net [206.127.244.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id SAA03205 for ; Sat, 13 Jun 1998 18:56:02 -0700 (PDT) Received: from 206.127.244.104 (excalibur38.hits.net [206.127.244.104]) by mail.hits.net (8.8.8/8.8.5) with SMTP id PAA11755; Sat, 13 Jun 1998 15:55:06 -1000 (HST) Message-ID: <35831E24.728F@hits.net> Date: Sat, 13 Jun 1998 14:49:40 -1000 From: Peter Demmer Reply-To: ampruss@hits.net Organization: AMPRUSS Co. X-Mailer: Mozilla 3.01 (Macintosh; I; 68K) MIME-Version: 1.0 To: Bob Roehrig CC: glowbugs Subject: Re: GB> SNUBBERS - correction References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Bob Roehrig wrote: > > We were talking about suppressing spikes when keying inductive loads. Snip... > Notice that if you use a .1 uF cap, the resistance is E/10. > > The formula is: R=E/(10*3.16*SQR(C))^1+(50/E)) > > How does one choose the cap value? I dunno. > > "Nostalgia is a thing of the past" > E-mail broehrig@admin.aurora.edu 73 de Bob, K9EUI > CIS: Data / Telecom Aurora University, Aurora, IL > 630-844-4898 Fax 630-844-5530 Peter wrote; Hi Bob, good job and tnx for the info. I also will keep a copy of this in the shop paper file. Should work well in relay contacts as well as a hot key. Thanks and Aloha, Peter KH6CTQ. Yes my W7QQQ 813 xtal-osc-pwr xmitter is comming together thanks to micro wave oven xfmers and lots of sound GB/BA advice. From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 13 22:57:56 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id WAA05123 for ; Sat, 13 Jun 1998 22:57:55 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id WAA03652 for ; Sat, 13 Jun 1998 22:59:46 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id TAA03483 for glowbugs-outgoing; Sat, 13 Jun 1998 19:29:12 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from smtp3.erols.com (smtp3.erols.com [207.172.3.236]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id TAA03474 for ; Sat, 13 Jun 1998 19:29:08 -0700 (PDT) Received: from LOCALNAME (207-172-70-69.s69.tnt11.brd.erols.com [207.172.70.69]) by smtp3.erols.com (8.8.8/8.8.5) with SMTP id WAA24491; Sat, 13 Jun 1998 22:28:30 -0400 (EDT) Message-Id: <199806140228.WAA24491@smtp3.erols.com> X-Sender: wmeara@pop.erols.com X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Sun, 14 Jun 1998 02:26:10 -0400 To: glowbugs@piobaire.mines.uidaho.edu, homebrew@qth.net From: Bill Meara Subject: GB> Might Midget RX report Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO With new telescopes they have "first light" so with homebrew receivers I guess we should call it "first sigs." This evening I received signals with my homebrew Mighty Midget receiver. I'd had some trouble getting the crystal filter circuit to work properly, so I temporarily put a 455 kc IF can in the circuit in place of the filter (the can itself plugged in to the two adjacent FT-243 crystal sockets - fit like a glove!). I'll eventually get the filter working, but the quick switch did the trick and allowed me to got to bed happy in the knowledge that the radio works. Special thanks to James, W5LWU, who donated the crystals. 455 kc rocks are getting hard to find. One crystal company wanted 75 dollars a piece to make them for me! Ouch! RX works FB. Not enough audio for a speaker, but 80 CW and 75 phone sounded especially good through HB circuits. How are the other Mighty Midget projects proceeding? 73 de N2CQR Bill Meara, Falls Church, Virginia wmeara@erols.com G-QRP #7965 http://www.mindspring.com/~johnmb/billm.htm From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 14 11:45:17 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id LAA05504 for ; Sun, 14 Jun 1998 11:45:16 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id LAA21442 for ; Sun, 14 Jun 1998 11:47:17 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA19885 for glowbugs-outgoing; Sun, 14 Jun 1998 08:07:47 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from ms1.nwla.com (root@[207.22.207.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id IAA19875 for ; Sun, 14 Jun 1998 08:07:36 -0700 (PDT) From: w5sum@ms1.nwla.com Received: from w5sum.nwla.com (ppp18.nwla.com [207.22.207.32]) by ms1.nwla.com (8.7.5/8.7.3) with SMTP id KAA04523; Sun, 14 Jun 1998 10:07:12 -0500 Message-Id: <199806141507.KAA04523@ms1.nwla.com> To: baswaplist@foothill.net, glowbugs@piobaire.mines.uidaho.edu, boatanchors@theporch.com Date: Sun, 14 Jun 1998 10:12:25 +0000 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: GB> Speed-X parts Priority: normal Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO howdy men I recently got a piece of gear I have coveted for years. I now own a Johnson Speed-X sideswiper. I got this on from a list member, and as usual, am very pleased. I need two items to make this thing right. I need one of the knurled knobs that goes on the keying leads. And I need the dampner that goes on the split post on the front. I guess I could have these machined but would rather get one from someone that has a spare LOL ( Im lazy today) anyone out there can help? btw, I love the way this bug can be slowed down to 10wpm. Ronnie W5SUM - Ronnie Hull PO Box 8941 Shreveport, La 71148 From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 14 13:34:18 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id NAA05560 for ; Sun, 14 Jun 1998 13:34:12 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id NAA25630 for ; Sun, 14 Jun 1998 13:36:14 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA21340 for glowbugs-outgoing; Sun, 14 Jun 1998 09:55:32 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA21333 for ; Sun, 14 Jun 1998 09:55:22 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id MAA01482; Sun, 14 Jun 1998 12:51:08 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806141651.MAA01482@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> Vintage FD... In-Reply-To: from Ken Gordon at "Jun 13, 98 05:50:42 pm" To: keng@uidaho.edu (Ken Gordon) Date: Sun, 14 Jun 1998 12:51:06 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > OK. What are the frequencies? I lost my list. > > Ken W7EKB I listened a little on 80M (3579 3535) and did not hear much but static. I will try 7050 7118 some today and see if anything happens. Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 14 13:34:26 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id NAA05558 for ; Sun, 14 Jun 1998 13:34:11 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id NAA15189 for ; Sun, 14 Jun 1998 13:36:14 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA21378 for glowbugs-outgoing; Sun, 14 Jun 1998 09:57:49 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id JAA21372; Sun, 14 Jun 1998 09:57:36 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Sun, 14 Jun 1998 09:57:36 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: "User Rdkeys Robert D. Keys" cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Vintage FD... In-Reply-To: <199806141651.MAA01482@seedlab1.cropsci.ncsu.edu> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > I listened a little on 80M (3579 3535) and did not hear much but static. > I will try 7050 7118 some today and see if anything happens. > > Bob/NA4G Me too. My in-laws are visiting so I can't spend too much time at it, but will do a little. How late does it go on? Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 14 15:10:28 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id PAA05614 for ; Sun, 14 Jun 1998 15:10:27 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id PAA28072 for ; Sun, 14 Jun 1998 15:12:31 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id LAA22725 for glowbugs-outgoing; Sun, 14 Jun 1998 11:30:29 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mtiwmhc02.worldnet.att.net (mtiwmhc02.worldnet.att.net [204.127.131.37]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id LAA22717 for ; Sun, 14 Jun 1998 11:30:19 -0700 (PDT) Received: from LOCALNAME ([12.65.146.81]) by mtiwmhc02.worldnet.att.net (InterMail v03.02.03 118 118 102) with SMTP id <19980614182928.RXXF21728@LOCALNAME>; Sun, 14 Jun 1998 18:29:28 +0000 X-Sender: ebjr@postoffice.worldnet.att.net X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: "User Rdkeys Robert D. Keys" , glowbugs@piobaire.mines.uidaho.edu From: Sandy W5TVW Subject: Re: GB> Vintage FD... Message-Id: <19980614182928.RXXF21728@LOCALNAME> Date: Sun, 14 Jun 1998 18:29:28 +0000 Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO At 12:51 PM 6/14/98 -0400, you wrote: >> OK. What are the frequencies? I lost my list. >> >> Ken W7EKB > >I listened a little on 80M (3579 3535) and did not hear much but static. >I will try 7050 7118 some today and see if anything happens. > >Bob/NA4G > > I was on 7050 last night for about 2 hours with no takers. Was calling CQ VFD. My battery finally gave up and I brought everything back inside and took down my 67' wire and the counterpoise. I may try again today on 14050. It's on until 0000Z Monday. 73, Sandy W5TVW From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 15 08:38:55 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id IAA06263 for ; Mon, 15 Jun 1998 08:38:52 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id IAA04102 for ; Mon, 15 Jun 1998 08:41:08 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id EAA01992 for glowbugs-outgoing; Mon, 15 Jun 1998 04:58:31 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from ms1.nwla.com (root@[207.22.207.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id EAA01982 for ; Mon, 15 Jun 1998 04:58:22 -0700 (PDT) From: w5sum@ms1.nwla.com Received: from w5sum.nwla.com (ppp17.nwla.com [207.22.207.31]) by ms1.nwla.com (8.7.5/8.7.3) with SMTP id GAA08986; Mon, 15 Jun 1998 06:58:08 -0500 Message-Id: <199806151158.GAA08986@ms1.nwla.com> To: baswaplist@foothill.net, forsale-swap@qth.net, glowbugs@piobaire.mines.uidaho.edu Date: Mon, 15 Jun 1998 07:03:25 +0000 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: GB> URM25 Priority: normal Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO howdy men Im looking for a URM25 with covers and in good working order. Anyone got one they will part with? Let me know Ronnie W5SUM - Ronnie Hull PO Box 8941 Shreveport, La 71148 From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 15 12:08:53 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id MAA06390 for ; Mon, 15 Jun 1998 12:08:52 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id MAA30104 for ; Mon, 15 Jun 1998 12:11:09 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA04429 for glowbugs-outgoing; Mon, 15 Jun 1998 08:17:35 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from hotmail.com (f202.hotmail.com [207.82.251.93]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id IAA04423 for ; Mon, 15 Jun 1998 08:17:26 -0700 (PDT) Received: (qmail 14100 invoked by uid 0); 15 Jun 1998 15:16:41 -0000 Message-ID: <19980615151641.14099.qmail@hotmail.com> Received: from 147.49.3.25 by www.hotmail.com with HTTP; Mon, 15 Jun 1998 08:16:41 PDT X-Originating-IP: [147.49.3.25] From: "Brad Hernlem" To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> More Regen Experiments Content-Type: text/plain Date: Mon, 15 Jun 1998 08:16:41 PDT Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I conducted a few experiments to examine the effects of screen grid voltage and transconductance on the oscillation point in a pentode regenerator circuit. The first two experiments were based on a simple regenerator comprised of either a 1L4 or 5654 pentode (both 7-pin miniature), a tank circuit, 3.9M grid leak to ground, 18 pF cap between tank and G1, Plate to feedback coil, coil to 200 pF to ground and 2.5 mH choke, other end of choke to .002 uF cap to ground and to a jack. 45V B+ was fed through high impedance headphones to the jack. Screen grid control was from the wiper of a 10K pot run from B+ to ground with a 0.1uF cap on the wiper to bypass to ground. The coil was 31 turns of #22 enamel covered wire wound uniformly spaced for about 2 1/8" on a 0.75" OD acrylic tube. Feedback windings were 6 turns close spaced situated about 1/8" from the main winding. The tuning capacitor was a 235 pF section from a BC receiver. The headphones were thrown in because I thought that they might help me discern the oscillation point but there was no "click" or other abrupt indication. Interestingly, although the circuit was intended only to oscillate, I could hear SW broadcasts very faintly even though this circuit was not connected to an antenna or ground. Using this circuit, I tuned a nearby receiver to a selected frequency and then adjusted the variable capacitor so that I could hear the oscillator on that frequency. I then backed off the G2 voltage until the signal could no longer be heard or detected on the signal strength indicator. This voltage was noted for several frequencies with both tubes. The data is shown below. The apparent transconductance at each setting was also determined from data collected previously in a separate experiment. ---------------------------------------------------------------- 1L4 Pentode, 45V on Plate Freq. Osc.Pt. Apparent Transconductance (kHz) (Volts) (microA/V) ----------------------------------------- 8000 39.6 550 9000 37.5 460 10500 32.3 320 12000 30.0 250 13500 29.3 240 ---------------------------------------------------------------- 5654 Pentode, 45V on Plate Freq. Osc.Pt. Apparent Transconductance (kHz) (Volts) (microA/V) ----------------------------------------- 7500 21.8 1050 9000 20.3 900 10500 19.5 825 12000 18.5 750 13000 18.0 650 ---------------------------------------------------------------- The following data was collected to measure the transconductance of the 5654 tube at different G2 settings under similar conditions as the regen circuit. A 3.9M grid leak was used and a 60Hz signal was fed into G1 through a 0.25uF cap. The signal was obtained by using a 100 ohm/10K ohm voltage divider across the heater; one end of the 100 ohm resistor was connected to the cathode and the other to the 0.25uF cap. This gave a 65mV RMS AC signal on the control grid. Applying different volts to the screen grid, the DC and AC current at the plate was measured. Transconductance was calculated by dividing the AC plate current by 65mV. This experiment was performed with 45 V on the plate as well as 180 V. Data is shown below. 5654 Pentode with 45V on Plate G2 Ip DC Ip AC Transcond. (V) (mA) (mA) (uA/V) ---------------------------------- 44.6 2.20 0.21 3230 41.6 1.845 0.209 3220 38.0 1.475 0.184 2830 34.8 1.169 0.162 2490 32.2 0.946 0.143 2200 29.6 0.752 0.125 1920 26.9 0.568 0.105 1620 23.6 0.380 0.081 1250 20.9 0.256 0.062 954 17.8 0.152 0.042 646 13.9 0.067 0.021 323 5654 Pentode with 180V on Plate G2 Ip DC Ip AC Transcond. (V) (mA) (mA) (uA/V) ---------------------------------- 45 2.56 0.257 3950 43 2.27 0.242 3720 41 2.03 0.227 3490 39 1.823 0.214 3290 37 1.631 0.201 3090 35 1.507 0.192 2950 33 1.285 0.176 2710 31 1.105 0.162 2490 29 0.928 0.147 2260 27 0.775 0.132 2030 25 0.636 0.117 1800 23 0.493 0.100 1540 21 0.374 0.083 1280 20 0.323 0.075 1150 19 0.268 0.066 1010 18 0.232 0.059 907 17 0.194 0.052 800 16 0.162 0.045 692 15 0.132 0.038 584 14 0.104 0.031 476 13 0.085 0.026 400 12 0.070 0.023 353 Observations: 1) Using the same circuit and feedback windings, two different tubes with widely different transconductance characteristics must be operated with appropriate G2 volts so that the effective transconductance is nearly the same. This means that higher G2 volts are needed for the low-transconductance 1L4 tube than for the higher-transconductance 5654 tube. 2) The lower transconductance tube (1L4) required a wider G2 voltage adjustment to set the oscillation point for the range of frequencies tested. This is what I expected to see because the transconductance in such a tube does not change as rapidly with G2 voltage as the higher-transconductance tubes. 3) Moving the feedback coil further away from the main winding increases the required G2 voltage for oscillation. 4) Both tubes went smoothly into oscillation regardless of the observation noted in 2). I don't know if there is any correlation between the G2 adjustment range and the general observations that some regenerators "plop" into oscillation or are difficult to control. Definitely, using a lower transconductance tube will spread out the adjustment range. 5) Increasing the plate voltage on the 5654 tube by a factor of 4 did not affect the slope of transconductance versus G2 volts but did raise the transconductance for any specified G2 voltage by a few percent. Based on this observation, control of oscillation should not be affected by plate voltage. Brad ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 15 21:10:58 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id VAA06675 for ; Mon, 15 Jun 1998 21:10:57 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id VAA28691 for ; Mon, 15 Jun 1998 21:13:22 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id RAA09128 for glowbugs-outgoing; Mon, 15 Jun 1998 17:27:13 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.xmission.com (mail.xmission.com [198.60.22.22]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id RAA09122 for ; Mon, 15 Jun 1998 17:27:03 -0700 (PDT) Received: from slc123h.modem.xmission.com (xmission.com) [166.70.9.123] by mail.xmission.com with esmtp (Exim 1.82 #2) id 0ylemw-0002gx-00; Mon, 15 Jun 1998 13:19:31 -0600 Message-ID: <35851F63.49C3E3F7@xmission.com> Date: Mon, 15 Jun 1998 13:19:35 +0000 From: Dexter Francis Reply-To: cwest@xmission.com Organization: CWest Tube Sales X-Mailer: Mozilla 4.05 (Macintosh; I; PPC) MIME-Version: 1.0 To: "BOATANCHORS@LISTSERV.TEMPE.GOV" , glowbugs@piobaire.mines.uidaho.edu Subject: GB> Single tube TX projects update Content-Type: text/plain; charset=us-ascii; x-mac-type="54455854"; x-mac-creator="4D4F5353" Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Greetings all - I've updated the modern and ancient single tube transmitter projects on the home page to include or allow download of the tube data sheets for the 117L7/N7/P7 and seven other triode/power pentodes that could be applied to the 6T9 circuit. Of course, you may have to fuss with the value of the 27k grid bias resistor and re-map the pin assignments for the other tube types, but at least there won't be any shortage of options. I also think that CR1 and CR2 in the 6T9 schematic probably need to be 1000 PIV, not 100 PIV as the article reads. Enjoy -- df *** CWest - P.O. Box 22443 Salt Lake City, Utah 84122 *** Visit our Web Page @ http://www.xmission.com/~cwest From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 15 23:48:39 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id XAA06752 for ; Mon, 15 Jun 1998 23:48:38 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id XAA07586 for ; Mon, 15 Jun 1998 23:51:06 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id UAA00433 for glowbugs-outgoing; Mon, 15 Jun 1998 20:30:55 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.iaxs.net (root@alyssa.iaxs.net [205.164.100.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id UAA00422 for ; Mon, 15 Jun 1998 20:30:42 -0700 (PDT) Received: from citrus.iaxs.net (bill@citrus.iaxs.net [206.43.66.3]) by mail.iaxs.net (8.8.8/iaxs-19971103) with ESMTP id WAA26084 for ; Mon, 15 Jun 1998 22:08:08 -0500 (CDT) Received: (from bill@localhost) by citrus.iaxs.net (8.8.8/iaxs-citrus-19971103) id WAA04307 for glowbugs@piobaire.mines.uidaho.edu; Mon, 15 Jun 1998 22:08:06 -0500 (CDT) Date: Mon, 15 Jun 1998 22:08:06 -0500 (CDT) From: Bill Hawkins Message-Id: <199806160308.WAA04307@citrus.iaxs.net> To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> 60 KHz reception Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Trying to receive WWVB at 60 KHz for the purpose of fine tuning an accurate crystal standard. At that low freq, you depend on the ground wave to maintain constant phase at your location, so you can measure drift rates of microseconds per day. Trying to do it with tubes, too, 'cause SS is dead easy. Made a meter square frame of plastic pipe and wound 500 feet of bell wire (2 cond #18) on it. Self resonance was 30 KHz. A little wire removal and a padder capacitor got it to where I could resonate at 60 KHz with about 3/4 of a BC-453 tuning cap, on the frame I'm gonna use for the TRF amp. Found several millivolts of signal from the loop while testing resonance. Tried tuning it and found it peaked at 61.2 KHz, rising to about 61.5 at night. Popped the main breaker on the house with no help. This morning, the power company helped me make a neighborhood test by driving a drill through the HV feed cable. The signal went away. Good thing the HP 403 is battery operated. Asked Yahoo about "61 KHz", and got back a list of computer monitors. Seems like someone in the neighborhood is operating a monitor around the clock, practically on top of WWVB. So I ask you, can I do the separation with tube circuits? HP used a 3 Hz mechanical filter in their antenna. I'm thinking of using a string of BC-453 IF cans, trimmed for 60 KHz. Bob says regens can be pretty selective - is that worth a try? Another possibility is to convert up to some crystal filter frequency, like 455 KHz, and then convert down to 60 KHz using the same oscillator so that it cancels out the frequency error it would otherwise introduce. Seems like it should work, but I dunno. A frequency drift of plus or minus a few tens of cycles in 395 KHz would still get through the crystal filter, but I wonder about phase stability. Um, the usual regen is used to detect the signal. I don't want to detect it, just amplify it to where I can use a phase detector. Anybody else interested in this project, or should I take this to some other list? Care to reccomend one? Regards, Bill Hawkins From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 16 00:03:59 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id AAA06764 for ; Tue, 16 Jun 1998 00:03:58 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id AAA09225 for ; Tue, 16 Jun 1998 00:06:26 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id UAA00896 for glowbugs-outgoing; Mon, 15 Jun 1998 20:44:47 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id UAA00883; Mon, 15 Jun 1998 20:44:33 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Mon, 15 Jun 1998 20:44:33 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: Bill Hawkins cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> 60 KHz reception In-Reply-To: <199806160308.WAA04307@citrus.iaxs.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > Anybody else interested in this project, YES!!! > or should I take this to > some other list? No! > Care to reccomend one? > I would not! Regen rx are VERY selective the lower you go. My RAK had "single-signal" below about 300 kHz. VERY loose coupling, BIG grid leak, small grid capacitor might do it. Too bad about that guy's monitor.... Ken From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 16 00:40:41 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id AAA06788 for ; Tue, 16 Jun 1998 00:40:39 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id AAA10139 for ; Tue, 16 Jun 1998 00:43:07 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA06101 for glowbugs-outgoing; Mon, 15 Jun 1998 09:57:09 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA06089 for ; Mon, 15 Jun 1998 09:56:48 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id MAA03853; Mon, 15 Jun 1998 12:52:31 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806151652.MAA03853@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> More Regen Experiments --- Excellent Work! In-Reply-To: <19980615151641.14099.qmail@hotmail.com> from Brad Hernlem at "Jun 15, 98 08:16:41 am" To: alihernlem@hotmail.com (Brad Hernlem) Date: Mon, 15 Jun 1998 12:52:29 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > I conducted a few experiments to examine the effects of > screen grid voltage and transconductance on the oscillation > point in a pentode regenerator circuit. Good Work, Brad.... > 3.9M grid leak to ground, 18 pF cap between tank and G1 Good values. As a comparison, it might be fun to repeat it using ``traditional'' MF values of grid circuit. Typically, that would be a 1 meg leak and a 100 or 250pf capacitor. I have an expectation that the smoothness of oscillation that you found would not occur. More of a plop into oscillation would occur, IMHO. > Freq. Osc.Pt. Apparent Transconductance > (kHz) (Volts) (microA/V) > ----------------------------------------- > 8000 39.6 550 > 9000 37.5 460 > 10500 32.3 320 > 12000 30.0 250 > 13500 29.3 240 > ---------------------------------------------------------------- > 5654 Pentode, 45V on Plate > > Freq. Osc.Pt. Apparent Transconductance > (kHz) (Volts) (microA/V) > ----------------------------------------- > 7500 21.8 1050 > 9000 20.3 900 > 10500 19.5 825 > 12000 18.5 750 > 13000 18.0 650 > ---------------------------------------------------------------- Interesting comparison. Granted the gain on the 1L4 was about half or a little less, both types of tube had the same relative falloff with frequency. The 5654 was a little better at the higher frequencies. > Transconductance was calculated by dividing the AC plate current > by 65mV. This experiment was performed with 45 V on the plate as > well as 180 V. Data is shown below. > > 5654 Pentode with 45V on Plate > > G2 Ip DC Ip AC Transcond. > (V) (mA) (mA) (uA/V) > ---------------------------------- > 44.6 2.20 0.21 3230 > 41.6 1.845 0.209 3220 > 38.0 1.475 0.184 2830 > 34.8 1.169 0.162 2490 > 32.2 0.946 0.143 2200 > 29.6 0.752 0.125 1920 > 26.9 0.568 0.105 1620 > 23.6 0.380 0.081 1250 > 20.9 0.256 0.062 954 > 17.8 0.152 0.042 646 > 13.9 0.067 0.021 323 > > 5654 Pentode with 180V on Plate > > G2 Ip DC Ip AC Transcond. > (V) (mA) (mA) (uA/V) > ---------------------------------- > 45 2.56 0.257 3950 > 43 2.27 0.242 3720 > 41 2.03 0.227 3490 > 39 1.823 0.214 3290 > 37 1.631 0.201 3090 > 35 1.507 0.192 2950 > 33 1.285 0.176 2710 > 31 1.105 0.162 2490 > 29 0.928 0.147 2260 > 27 0.775 0.132 2030 > 25 0.636 0.117 1800 > 23 0.493 0.100 1540 > 21 0.374 0.083 1280 > 20 0.323 0.075 1150 > 19 0.268 0.066 1010 > 18 0.232 0.059 907 > 17 0.194 0.052 800 > 16 0.162 0.045 692 > 15 0.132 0.038 584 > 14 0.104 0.031 476 > 13 0.085 0.026 400 > 12 0.070 0.023 353 This is excellent data. What it is saying to me is that plate voltage is mostly irrelevant after a certain point. High plate voltage on a detector buys you some large signal capability, but on weaker signals, in a regen detector, that difference comes together. The data suggests that 45 plate volts is entirely sufficient in regen detector service. > Observations: Sounds good. > 4) Both tubes went smoothly into oscillation regardless of the > observation noted in 2). I don't know if there is any correlation > between the G2 adjustment range and the general observations > that some regenerators "plop" into oscillation or are difficult > to control. Definitely, using a lower transconductance tube will > spread out the adjustment range. Important point. IF a significant plop occurs, the detector is not operating correctly, or is not controlled correctly. A good regen detector should go into oscillation so smoothly that you cannot discern the difference between oscillating and non-oscillating condition. I would infer, from your data, that lower plate voltages are fine and that a low-C hi-Z grid coupling network gives you finer control of regeneration. That is, in essence, one of the things I have tried to stress. Your data would seem to confirm that. Great Work Brad! Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 16 09:37:24 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id JAA07109 for ; Tue, 16 Jun 1998 09:37:24 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id JAA02733 for ; Tue, 16 Jun 1998 09:39:58 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id GAA06454 for glowbugs-outgoing; Tue, 16 Jun 1998 06:13:32 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from admin.aurora.edu (admin.aurora.edu [192.203.224.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id GAA06449 for ; Tue, 16 Jun 1998 06:13:28 -0700 (PDT) Received: from localhost (broehrig@localhost) by admin.aurora.edu (8.8.8/8.8.8) with SMTP id IAA06225; Tue, 16 Jun 1998 08:09:37 -0500 Date: Tue, 16 Jun 1998 08:09:36 -0500 (CDT) From: Bob Roehrig To: Bill Hawkins cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> 60 KHz reception In-Reply-To: <199806160308.WAA04307@citrus.iaxs.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO You might be able to reduce the problem with regen. Also, have you tried rotating the loop to null out the noise? "Nostalgia is a thing of the past" E-mail broehrig@admin.aurora.edu 73 de Bob, K9EUI CIS: Data / Telecom Aurora University, Aurora, IL 630-844-4898 Fax 630-844-5530 From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 16 10:36:22 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id KAA07176 for ; Tue, 16 Jun 1998 10:36:21 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id KAA14480 for ; Tue, 16 Jun 1998 10:38:54 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA07195 for glowbugs-outgoing; Tue, 16 Jun 1998 07:05:33 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from wallias.eda.com (wallias.eda.com [199.85.245.97]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id HAA07186 for ; Tue, 16 Jun 1998 07:05:25 -0700 (PDT) Received: from bgriff (bgriff.eda.com [199.85.245.188]) by wallias.eda.com (8.6.11/8.6.9) with SMTP id KAA17126 for ; Tue, 16 Jun 1998 10:04:19 -0400 Date: Tue, 16 Jun 1998 10:04:19 -0400 Message-Id: <199806161404.KAA17126@wallias.eda.com> X-Sender: bgriff@mail.eda.com Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: glowbugs@piobaire.mines.uidaho.edu From: bgriff@develcon.com (Bill Griffith) Subject: Re: GB> 60 KHz reception X-Mailer: Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO One of the members of our club (Bill VE3CFY) built a 1 ft.sq. BCB loop for our annual construction contest (he won, BTW). I remember he mentioned that some BCB SWLs use two or more loops for DXing low-power stations - one loop tuned and oriented to "boost" the signal of the station of interest, and one or more loops tuned and oriented to "null" interfering stations. None of the loops are actually connected to the receiver - they use inductive coupling to the receiver's ferrite loopstick. I thought it was a really neat idea (and a good presentation). 73, Bill VE3WGX >Trying to receive WWVB at 60 KHz for the purpose of fine tuning an >accurate crystal standard. At that low freq, you depend on the >ground wave to maintain constant phase at your location, so you >can measure drift rates of microseconds per day. Trying to do it >with tubes, too, 'cause SS is dead easy. > >Made a meter square frame of plastic pipe and wound 500 feet of bell >wire (2 cond #18) on it. Self resonance was 30 KHz. A little wire >removal and a padder capacitor got it to where I could resonate at >60 KHz with about 3/4 of a BC-453 tuning cap, on the frame I'm gonna >use for the TRF amp. Found several millivolts of signal from the loop >while testing resonance. Tried tuning it and found it peaked at 61.2 >KHz, rising to about 61.5 at night. Popped the main breaker on the >house with no help. This morning, the power company helped me make >a neighborhood test by driving a drill through the HV feed cable. >The signal went away. Good thing the HP 403 is battery operated. >Asked Yahoo about "61 KHz", and got back a list of computer monitors. >Seems like someone in the neighborhood is operating a monitor around >the clock, practically on top of WWVB. > >So I ask you, can I do the separation with tube circuits? HP used >a 3 Hz mechanical filter in their antenna. I'm thinking of using a >string of BC-453 IF cans, trimmed for 60 KHz. Bob says regens can >be pretty selective - is that worth a try? Another possibility is to >convert up to some crystal filter frequency, like 455 KHz, and then >convert down to 60 KHz using the same oscillator so that it cancels >out the frequency error it would otherwise introduce. Seems like it >should work, but I dunno. A frequency drift of plus or minus a few >tens of cycles in 395 KHz would still get through the crystal filter, >but I wonder about phase stability. > >Um, the usual regen is used to detect the signal. I don't want to >detect it, just amplify it to where I can use a phase detector. > >Anybody else interested in this project, or should I take this to >some other list? Care to reccomend one? > >Regards, >Bill Hawkins > > ____________________________________________________________________________ Bill Griffith Tel: (416)-385-1390 Production Engineer Fax: (416)-385-1610 Email: bgriff@develcon.com Develcon Electronics Ltd. 18 Dyas Road North York, Ontario Canada M3B 1V5 From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 16 11:12:56 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id LAA07213 for ; Tue, 16 Jun 1998 11:12:56 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id LAA16869 for ; Tue, 16 Jun 1998 11:15:32 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA08127 for glowbugs-outgoing; Tue, 16 Jun 1998 07:47:20 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from hotmail.com (f122.hotmail.com [207.82.251.1]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id HAA08120 for ; Tue, 16 Jun 1998 07:47:15 -0700 (PDT) Received: (qmail 15476 invoked by uid 0); 16 Jun 1998 14:46:32 -0000 Message-ID: <19980616144632.15474.qmail@hotmail.com> Received: from 147.49.3.25 by www.hotmail.com with HTTP; Tue, 16 Jun 1998 07:46:31 PDT X-Originating-IP: [147.49.3.25] From: "Brad Hernlem" To: rdkeys@seedlab1.cropsci.ncsu.edu Cc: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Re: GB- More Regen Experiments --- Excellent Work! Content-Type: text/plain Date: Tue, 16 Jun 1998 07:46:31 PDT Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO >> I conducted a few experiments to examine the effects of >> screen grid voltage and transconductance on the oscillation >> point in a pentode regenerator circuit. > >Good Work, Brad.... > >> 3.9M grid leak to ground, 18 pF cap between tank and G1 > >Good values. As a comparison, it might be fun to repeat it >using ``traditional'' MF values of grid circuit. Typically, >that would be a 1 meg leak and a 100 or 250pf capacitor. >I have an expectation that the smoothness of oscillation that >you found would not occur. More of a plop into oscillation >would occur, IMHO. I'll try that next. I was half expecting that I would find a noticeable "plop" with the 5654 compared with the 1L4 because I was assuming that this was related to the adjustment range needed to go into oscillation. After doing this experiment I am not so sure that my assumption was valid. Perhaps it has more to do with loading of the tank as you suggest. It is clear that the 1L4 circuit was more easy to adjust but whether it was more stable ("plop" resistant) is unclear. I am not even sure how I could measure this except by ear (I wish I had an oscilloscope). The experiments that I have set up are simple enough that I can get useful info with just a DVM or VTVM and a receiver as a sort of crude frequency counter and signal strength meter. >> Freq. Osc.Pt. Apparent Transconductance >> (kHz) (Volts) (microA/V) >> ----------------------------------------- >> 8000 39.6 550 >> 9000 37.5 460 >> 10500 32.3 320 >> 12000 30.0 250 >> 13500 29.3 240 >> ---------------------------------------------------------------- >> 5654 Pentode, 45V on Plate >> >> Freq. Osc.Pt. Apparent Transconductance >> (kHz) (Volts) (microA/V) >> ----------------------------------------- >> 7500 21.8 1050 >> 9000 20.3 900 >> 10500 19.5 825 >> 12000 18.5 750 >> 13000 18.0 650 >> ---------------------------------------------------------------- > >Interesting comparison. Granted the gain on the 1L4 was about half >or a little less, both types of tube had the same relative falloff >with frequency. The 5654 was a little better at the higher frequencies. Within the range of error for my crude measurements, I am not even sure that the factor of two difference in these transconductance numbers is real. The important thing is that they are in the same rough range at the oscillation point. These were measured at only 60Hz as compared to the 7.5 to 13 MHz when actually oscillating so stray capacitances and differences in interelectrode characteristics between the two tubes may have also affected these results. If I understand the operation of the "throttle" capacitor properly, it serves as a path to ground for the RF to complete the feedback circuit (RF can't get through the 2.5 mH choke). As the frequency is increased, the reactance of the capacitor falls and so more RF can flow through the "tickler" winding. This means that less transconductance (less voltage on G2) is required to sustain oscillation at higher frequency as observed. In my FET regen receiver, which has a variable throttle capacitor, the oscillation point is at higher throttle capacitance for higher frequencies, again in agreement with this observation. >> Transconductance was calculated by dividing the AC plate current >> by 65mV. This experiment was performed with 45 V on the plate as >> well as 180 V. Data is shown below. >> >> 5654 Pentode with 45V on Plate >> >> G2 Ip DC Ip AC Transcond. >> (V) (mA) (mA) (uA/V) >> ---------------------------------- >> 44.6 2.20 0.21 3230 >> 41.6 1.845 0.209 3220 >> 38.0 1.475 0.184 2830 >> 34.8 1.169 0.162 2490 >> 32.2 0.946 0.143 2200 >> 29.6 0.752 0.125 1920 >> 26.9 0.568 0.105 1620 >> 23.6 0.380 0.081 1250 >> 20.9 0.256 0.062 954 >> 17.8 0.152 0.042 646 >> 13.9 0.067 0.021 323 >> >> 5654 Pentode with 180V on Plate >> >> G2 Ip DC Ip AC Transcond. >> (V) (mA) (mA) (uA/V) >> ---------------------------------- >> 45 2.56 0.257 3950 >> 43 2.27 0.242 3720 >> 41 2.03 0.227 3490 >> 39 1.823 0.214 3290 >> 37 1.631 0.201 3090 >> 35 1.507 0.192 2950 >> 33 1.285 0.176 2710 >> 31 1.105 0.162 2490 >> 29 0.928 0.147 2260 >> 27 0.775 0.132 2030 >> 25 0.636 0.117 1800 >> 23 0.493 0.100 1540 >> 21 0.374 0.083 1280 >> 20 0.323 0.075 1150 >> 19 0.268 0.066 1010 >> 18 0.232 0.059 907 >> 17 0.194 0.052 800 >> 16 0.162 0.045 692 >> 15 0.132 0.038 584 >> 14 0.104 0.031 476 >> 13 0.085 0.026 400 >> 12 0.070 0.023 353 > > >This is excellent data. What it is saying to me is that plate >voltage is mostly irrelevant after a certain point. High plate >voltage on a detector buys you some large signal capability, >but on weaker signals, in a regen detector, that difference >comes together. > >The data suggests that 45 plate volts is entirely sufficient >in regen detector service. This seems to be true for this PENTODE at least. Increasing the plate voltage only seems to slightly increase the plate current and transconductance but from what I have seen there is a general, roughly linear trend down in transconductance with G2 voltage for any given tube. The slope of that line seems to be constant regardless of plate voltage. Increasing the plate voltage will also increase the plate resistance, presumably. Although I don't know what practical effect that has on regen behavior. Plate voltage on triodes should be a whole different matter because, in that case, it plays the role that G2 voltage has in pentodes. >> Observations: > >Sounds good. > >> 4) Both tubes went smoothly into oscillation regardless of the >> observation noted in 2). I don't know if there is any correlation >> between the G2 adjustment range and the general observations >> that some regenerators "plop" into oscillation or are difficult >> to control. Definitely, using a lower transconductance tube will >> spread out the adjustment range. > >Important point. IF a significant plop occurs, the detector is >not operating correctly, or is not controlled correctly. A good >regen detector should go into oscillation so smoothly that you cannot >discern the difference between oscillating and non-oscillating condition. > >I would infer, from your data, that lower plate voltages are fine and >that a low-C hi-Z grid coupling network gives you finer control of >regeneration. That is, in essence, one of the things I have tried >to stress. Your data would seem to confirm that. I used the 18 pF value primarily based on your comments here over the years, although I realize that you work mainly with triodes. Since the pentodes have higher input impedance, the choice of coupling cap may not be as critical. Nonetheless, it worked. >Great Work Brad! > >Bob/NA4G > > Brad ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 16 11:20:05 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id LAA07223 for ; Tue, 16 Jun 1998 11:20:04 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id LAA18338 for ; Tue, 16 Jun 1998 11:22:41 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA08279 for glowbugs-outgoing; Tue, 16 Jun 1998 07:53:08 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id HAA08273 for ; Tue, 16 Jun 1998 07:53:04 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id KAA05201; Tue, 16 Jun 1998 10:48:38 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806161448.KAA05201@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> 60 KHz reception In-Reply-To: <199806160308.WAA04307@citrus.iaxs.net> from Bill Hawkins at "Jun 15, 98 10:08:06 pm" To: bill@iaxs.net (Bill Hawkins) Date: Tue, 16 Jun 1998 10:48:36 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > So I ask you, can I do the separation with tube circuits? HP used > a 3 Hz mechanical filter in their antenna. I'm thinking of using a > string of BC-453 IF cans, trimmed for 60 KHz. Bob says regens can > be pretty selective - is that worth a try? I can't comment much from the theoretical of WWV time hacking, but for general SWL use down there, the RAK separates such signals fairly easily. I would expect that a peaked 3 or 4 stage tuned filter to shape the passband, and then some regeneration to peak it on 60khz, might work, especially with some audio filtering. The RAK does not use audio filtering down there, because the regen detector is that narrow anyway. Go figure. Good Luck. Bob From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 16 11:28:44 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id LAA07240 for ; Tue, 16 Jun 1998 11:28:44 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id LAA22014 for ; Tue, 16 Jun 1998 11:31:20 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA08607 for glowbugs-outgoing; Tue, 16 Jun 1998 08:07:39 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.xmission.com (mail.xmission.com [198.60.22.22]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id IAA08602 for ; Tue, 16 Jun 1998 08:07:35 -0700 (PDT) Received: from slc410h.modem.xmission.com (xmission.com) [166.70.2.156] by mail.xmission.com with esmtp (Exim 1.82 #2) id 0ylxKS-0000RK-00; Tue, 16 Jun 1998 09:07:21 -0600 Message-ID: <358635E2.E53A4511@xmission.com> Date: Tue, 16 Jun 1998 09:07:48 +0000 From: Dexter Francis Reply-To: cwest@xmission.com Organization: CWest Tube Sales X-Mailer: Mozilla 4.05 (Macintosh; I; PPC) MIME-Version: 1.0 To: Bill Griffith CC: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Re: Loop antennas References: <199806161404.KAA17126@wallias.eda.com> Content-Type: text/plain; charset=us-ascii; x-mac-type="54455854"; x-mac-creator="4D4F5353" Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I recall seeing a commercial product that does this also. The loop is tuneable, so it acts as a passive - or director element. It's called a Select-A-Tenna. There are two models - one has an external ferrite loop that is placed adjacent,and parallel, to the radio's ferrite loop for more incuctive coupling. They cost betwen $60 and $90. There is also an article in Joe Carr's Rx Antenna Handbook that shows how to make a multi turn loop out of multi-strand computer cable. -df *** CWest - P.O. Box 22443 Salt Lake City, Utah 84122 *** Visit our Web Page @ http://www.xmission.com/~cwest From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 16 11:29:17 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id LAA07245 for ; Tue, 16 Jun 1998 11:29:16 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id LAA09286 for ; Tue, 16 Jun 1998 11:31:53 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA08699 for glowbugs-outgoing; Tue, 16 Jun 1998 08:09:21 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id IAA08687 for ; Tue, 16 Jun 1998 08:09:14 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id LAA05262; Tue, 16 Jun 1998 11:04:59 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806161504.LAA05262@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> Loops for good measure and funzies In-Reply-To: <199806161404.KAA17126@wallias.eda.com> from Bill Griffith at "Jun 16, 98 10:04:19 am" To: bgriff@develcon.com (Bill Griffith) Date: Tue, 16 Jun 1998 11:04:57 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > One of the members of our club (Bill VE3CFY) built a 1 ft.sq. BCB loop for > our annual construction contest (he won, BTW). I was thinking of building a 4 foot loop with 2-3 turns for 80M FD this year, to help the rx a bit. Anyone ever tried that with something like and R390? Love that 20's era loop de loop stuff.....(:+}}..... It is fine glowbugging style.... Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 16 11:52:37 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id LAA07270 for ; Tue, 16 Jun 1998 11:52:36 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id LAA23922 for ; Tue, 16 Jun 1998 11:55:12 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA09620 for glowbugs-outgoing; Tue, 16 Jun 1998 08:32:20 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from wallias.eda.com (wallias.eda.com [199.85.245.97]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id IAA09595 for ; Tue, 16 Jun 1998 08:32:13 -0700 (PDT) Received: from bgriff (bgriff.eda.com [199.85.245.188]) by wallias.eda.com (8.6.11/8.6.9) with SMTP id LAA18044; Tue, 16 Jun 1998 11:30:37 -0400 Date: Tue, 16 Jun 1998 11:30:37 -0400 Message-Id: <199806161530.LAA18044@wallias.eda.com> X-Sender: bgriff@mail.eda.com Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: "User Rdkeys Robert D. Keys" From: bgriff@develcon.com (Bill Griffith) Subject: Re: GB> Loops for good measure and funzies Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO >From what I remember of Bill's presentation, loops work best for longwaves, and are less effective for shortwaves (something about how loops use the magnetic component of the wave to get the electrons circulating, with the magnetic component of the wave being stronger than the electric component as you go lower in frequency). He said that his loop had some positive effect at 160m, but no noticeable effect at 80m. Perhaps it's possible to optimize the design for 80m, but I've no knowledge or experience. I do recall seeing a recent article (past year) in QST about an active(?) loop antenna, though. Sounds like a fun experiment, though! Bill VE3WGX >> One of the members of our club (Bill VE3CFY) built a 1 ft.sq. BCB loop for >> our annual construction contest (he won, BTW). > >I was thinking of building a 4 foot loop with 2-3 turns for 80M FD this >year, to help the rx a bit. Anyone ever tried that with something like >and R390? Love that 20's era loop de loop stuff.....(:+}}..... It is >fine glowbugging style.... > >Bob/NA4G > > ____________________________________________________________________________ Bill Griffith Tel: (416)-385-1390 Production Engineer Fax: (416)-385-1610 Email: bgriff@develcon.com Develcon Electronics Ltd. 18 Dyas Road North York, Ontario Canada M3B 1V5 From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 16 13:16:48 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id NAA07321 for ; Tue, 16 Jun 1998 13:16:48 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id NAA03260 for ; Tue, 16 Jun 1998 13:19:25 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA10571 for glowbugs-outgoing; Tue, 16 Jun 1998 09:53:23 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA10566 for ; Tue, 16 Jun 1998 09:53:19 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id MAA05517; Tue, 16 Jun 1998 12:49:06 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806161649.MAA05517@seedlab1.cropsci.ncsu.edu> Subject: GB> Anyone Glowbottling on ARRL Field Day? To: glowbugs@piobaire.mines.uidaho.edu Date: Tue, 16 Jun 1998 12:49:04 -0400 (EDT) Cc: rdkeys@seedlab1.cropsci.ncsu.edu (User RDKEYS Robert D. Keys) X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Although the vintage FD this past weekend seemed to be a bellyup affair, I am wondering who is going to be running what glowing firebottles on the ARRL FD 98 at the end of the month. That is only 2 weeks ahead, and everyone got the spare bottles packed, and hernia belts ready? I am probably going to run an R-388 or R-390 with Big Bertha Radiomarine and a fiercely glowing pair of 813's (idling at 150 watts output). The antenna will probably be a 3/4 wave L worked against a 1/4 wave counterpoise for a cardioid pattern to get some westerly emphasis. The only modernity will be a logging laptop (a BA PC-Convertible to keep the right time slant on things). The band BA-Bob gets is 80M, of course. I would expect if the Glowbugs and Boatanchors keeps to the 3550 or 3579 country, we can probably edgewise snitch a touch o' the ol' ether. Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 16 14:43:22 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id OAA07375 for ; Tue, 16 Jun 1998 14:43:20 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id OAA15628 for ; Tue, 16 Jun 1998 14:45:59 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id LAA12198 for glowbugs-outgoing; Tue, 16 Jun 1998 11:17:11 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.iaxs.net (root@alyssa.iaxs.net [205.164.100.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id LAA12191 for ; Tue, 16 Jun 1998 11:16:46 -0700 (PDT) Received: from citrus.iaxs.net (bill@citrus.iaxs.net [206.43.66.3]) by mail.iaxs.net (8.8.8/iaxs-19971103) with ESMTP id NAA08402; Tue, 16 Jun 1998 13:12:51 -0500 (CDT) Received: (from bill@localhost) by citrus.iaxs.net (8.8.8/iaxs-citrus-19971103) id NAA05338; Tue, 16 Jun 1998 13:12:49 -0500 (CDT) Date: Tue, 16 Jun 1998 13:12:49 -0500 (CDT) From: Bill Hawkins Message-Id: <199806161812.NAA05338@citrus.iaxs.net> To: bgriff@develcon.com, rdkeys@seedlab1.cropsci.ncsu.edu Subject: Re: GB> Loops for good measure and funzies Cc: glowbugs@piobaire.mines.uidaho.edu Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO A '20s Signal Corps book (reference on request), written when an antenna was an ANTENNA with a bunch of wire spread over a lot of area, says that loops are interesting, but not much use except for direction finding. Got my square meter loop into the attic through a much smaller hole by using two elbows sawed in half (the rest of the pipe was just slotted) so I could fold the loop into an L (or a < ) and finish assembly in the attic. Now I can't turn it very much, so this idea of using a separate loop to null the interference is worth looking into. Bill From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 16 15:01:18 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id PAA07394 for ; Tue, 16 Jun 1998 15:01:18 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id PAA13750 for ; Tue, 16 Jun 1998 15:03:57 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id LAA12730 for glowbugs-outgoing; Tue, 16 Jun 1998 11:36:30 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.iaxs.net (root@alyssa.iaxs.net [205.164.100.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id LAA12721 for ; Tue, 16 Jun 1998 11:36:25 -0700 (PDT) Received: from citrus.iaxs.net (bill@citrus.iaxs.net [206.43.66.3]) by mail.iaxs.net (8.8.8/iaxs-19971103) with ESMTP id NAA11268 for ; Tue, 16 Jun 1998 13:36:00 -0500 (CDT) Received: (from bill@localhost) by citrus.iaxs.net (8.8.8/iaxs-citrus-19971103) id NAA05443 for glowbugs@piobaire.mines.uidaho.edu; Tue, 16 Jun 1998 13:35:58 -0500 (CDT) Date: Tue, 16 Jun 1998 13:35:58 -0500 (CDT) From: Bill Hawkins Message-Id: <199806161835.NAA05443@citrus.iaxs.net> To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Fair Radio stuff Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Bought the TMC VFO listed in Fair's latest catalog. Almost a cubic foot, but near a dollar a pound, rare in that catalog. Looks like it would be perfect for building a very stable VFO. Even has a cam for linearizing the frequency dial, along with external slug and trimmer adjustments for high and low end adjustment. All this in an oven, but I doubt that you'd have to heat it in normal use. Dunno what frequency span, but it has a 100 KC crystal inside. There's only one RF output, so the crystal must be turned on/off by power leads, if it's a marker. Anybody know what the specs are? Bought the attenuator out of a URM-25. It needed to be cleaned and lubricated, and one of the resistors had a burn mark, but it is very well built. Not silver plated, though, except maybe the contacts. Anybody ever buy one of those telemeter program selector boxes, listed as "Parts Galore"? Regards, Bill Hawkins From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jun 17 07:38:51 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id HAA07899 for ; Wed, 17 Jun 1998 07:38:50 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id HAA12721 for ; Wed, 17 Jun 1998 07:41:41 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id EAA20971 for glowbugs-outgoing; Wed, 17 Jun 1998 04:02:43 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.hits.net (mail.hits.net [206.127.244.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id EAA20966 for ; Wed, 17 Jun 1998 04:02:38 -0700 (PDT) Received: from 206.127.244.76 (excalibur10.hits.net [206.127.244.76]) by mail.hits.net (8.8.8/8.8.5) with SMTP id BAA23065; Wed, 17 Jun 1998 01:02:04 -1000 (HST) Message-ID: <3587A72D.22DB@hits.net> Date: Wed, 17 Jun 1998 01:24:18 -1000 From: Peter Demmer Reply-To: ampruss@hits.net Organization: AMPRUSS Co. X-Mailer: Mozilla 3.01 (Macintosh; I; 68K) MIME-Version: 1.0 To: Jack Meadows CC: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Re: Micro wave ovens xfmers 813 HV/LV pwr supply References: <35876B2B.5FE@hits.net> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Peter Demmer wrote: > > Bob and the GB gang; > > > > Ralph Hartwell wrote: > > > > > > > > PD>I have two micro wave oven xfmers and their respective schematics. snip... Peter wrote Ill take > > > your advice with the insulated mounting and the magnetic shunts > > > removal. Thanks again es Aloha, Peter, KH6CTQ Snip.... > > Peter wrote; > > Hi Ralph, Just finished the microwave xfmer modifications and 3 hour > > heating/load test. Removed the magnetic shunt bars. Lifted the grounded > > to the core, HV secondary. Removed 10 layers of HV windings. Drilled, > > tapped and mounted two small ceramic stand-off insulators on the xfmer > > core (used existing holes). Made up and attached the 5KV full wave > > bribge. Wired up and connected the 32 uFd @ 4.5 KV filter capacitor and > > a paralled 35k and a 58k 150 watts each, bleeder/load resistor bank. > > > > Hooked up the HV DC Volt meter. Also, a current meter in series in the > > negative power supply lead. Hooked up another LV AC volt meter across > > the new #14 AWG Teflon (TM) 10 VAC winding (4x the original) shunted > > with a 5 ohm @ 100 Watt resistor. Placed a temperature probe in a spare > > hole that was drilled through the core during manufacture. (There are > > 4 alike empty holes perhaps used to mechanically hold the core > > laminations together during TIG welding). > > > > Original 3800 volts was reduced to 2200 by the 10 HV winding layer > > removal. Adding another 38K ohm @100 watt resistor to the load /bleeder > > bank. This again caused the HV to drop by another 26 volts per 106 mA > > current draw. I stopped increasing the load and just let the whole rig > > sit and soak at 2000 VDC, @200 mA and 10 VAC @ 5 Ohms load for three > > hours. Core temperature rose and stabilized at about 110 degrees F. > > > > looks like I finally have my power supply for the 813 Oscillator/Power > > Amplifier up and running hot straight and normal. Ralph, if you can and > > would please, pass this info along to the BA and Glow bug lists. I > > don't seem to have access and presently, Im to busy melting solder and > > heating ceramic tiles to sort that out. I know some of the suggestions > > came form some of their more knowledgable list members and they sure > > will be interested in my progress. Aloha DE Peter, KH6CTQ From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jun 17 12:34:30 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id MAA08097 for ; Wed, 17 Jun 1998 12:34:29 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id MAA26175 for ; Wed, 17 Jun 1998 12:37:23 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA23887 for glowbugs-outgoing; Wed, 17 Jun 1998 09:01:21 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA23882 for ; Wed, 17 Jun 1998 09:01:16 -0700 (PDT) Received: from reno.WPI.EDU (jski@reno.WPI.EDU [130.215.24.65]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id MAA19782 for ; Wed, 17 Jun 1998 12:00:56 -0400 (EDT) Received: (from jski@localhost) by reno.WPI.EDU (8.9.0/8.9.0) id MAA29530 for glowbugs@piobaire.mines.uidaho.edu; Wed, 17 Jun 1998 12:00:56 -0400 (EDT) From: "Joseph M. Krzeszewski" Message-Id: <199806171600.MAA29530@reno.WPI.EDU> Subject: GB> Reciever Design To: glowbugs@piobaire.mines.uidaho.edu Date: Wed, 17 Jun 1998 12:00:56 -0400 (EDT) X-Mailer: ELM [version 2.4 PL25] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Greetings all. Since I was lucky enough to have inherited several hundred vacuum tubes from the Physics department here at school, I now have the opportunity to build that hollow state regenerative receiver I have been dreaming of for a while. I have read the glowbug archives and have a fairly good feel for what makes a good regeny, but I thought I would ask a few questions now while I am still doing calculations. What Q should I be aiming for in the tank circuit? My design for the 80M coil right now calls for 80 uH or so. This should give me a Q of 280 or so, Should I go higher? My present design uses three capacitors in a series parallel arrangement to allow adjustment of the span and band edges. As selected, I should be able to cover the general portions of 40 & 30M with about 1 kHz/degree of dial rotation and 1.3 kHz/degree on 80M. How badly will this capacitor arrangement hurt the Q of the resonant circuit? I have a wide variety of tubes to choose from for detector service. I am leaning towards a 6J5 for the detector (possibly another for audio) or a 6SN7 to cover both RF and audio in one tube. I do have several 24A's and thought about using one of them for a detector with screen grid control of the regeneration, but I am not certain how to set that up. Also, what would be a good audio tube to go with a 24 detector? Any recommendations? I know to keep the grid leak resistor large and the cap small, but is there any way to calculate the proper values? I do have a set of RCA manuals, so I have the curves for just about any tube I have. I have a 3:1 audio interstage transformer, so coupling to the audio amp shouldn't be a problem. I have seen 9:1 ratios in some designs. What is the difference if any? Has anyone tried using a small filament transformer (120V:12.6V) as an interstage transformer or as an audio choke? I assume that keeping DC off of my 3k phones is a good idea, but is it that critical? What should I try to limit the current in the phones to? I am planning on going to the MIT flea on Sunday to look for parts. Does anyone know if there were ever 5-pin surface mount sockets? All I have ever seen were 4-pin. -- Joe -- Joseph M. Krzeszewski Mechanical Engineering / Materials Science N5LHF Jack of All Trades, Master of None... Yet jski@wpi.edu -= CCC Shop Student Hardware Specialist =- From turansky@xroads.com Wed Jun 17 13:19:28 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id NAA08127 for ; Wed, 17 Jun 1998 13:19:27 GMT Received: from dogbert.xroads.com (dogbert.xroads.com [206.222.124.36]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id NAA29732 for ; Wed, 17 Jun 1998 13:22:21 -0400 (EDT) Received: from wturansk-mobl.ch.intel.com (slip52.xroads.com [206.222.125.86]) by dogbert.xroads.com (8.8.5/8.8.5) with SMTP id KAA14220; Wed, 17 Jun 1998 10:22:17 -0700 (MST) Message-Id: <3.0.5.32.19980617102048.01112700@mail.xroads.com> X-Sender: turansky@mail.xroads.com X-Mailer: QUALCOMM Windows Eudora Light Version 3.0.5 (32) Date: Wed, 17 Jun 1998 10:20:48 -0700 To: "Joseph M. Krzeszewski" From: Walt Turansky Subject: Re: GB> Reciever Design Cc: glowbugs@piobaire.mines.uidaho.edu In-Reply-To: <199806171600.MAA29530@reno.WPI.EDU> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Status: RO Joe, FB, go for it. You'll be surprized at the performance. >What Q should I be aiming for in the tank circuit? My design for the 80M >coil right now calls for 80 uH or so. This should give me a Q of 280 or so, >Should I go higher? I use an 80 uH coil on 80 meters and a 20 uH coil on 40 meters with very good results. > >My present design uses three capacitors in a series parallel arrangement to >allow adjustment of the span and band edges. As selected, I should be able >to cover the general portions of 40 & 30M with about 1 kHz/degree of dial >rotation and 1.3 kHz/degree on 80M. How badly will this capacitor arrangement >hurt the Q of the resonant circuit? Should be fine. > >I have a wide variety of tubes to choose from for detector service. I am >leaning towards a 6J5 for the detector (possibly another for audio) or a >6SN7 to cover both RF and audio in one tube. Both are good for detectors and audio stages. I would try the 24A as a screen grid detector with a 27 for an transformer coupled audio stage with the 3:1 xformer that you have. Or use a 6J5 for the audio. Put 45 volts on the detector and audio plate (battery preferred, AES has them) and 22.5 volts on the screen grid. Then use about 250 pF of throttle condenser regen control. It works smooth as silk and the only way to detected the onset of oscillation is the rush of white noise. I have a 32 detector and 2 stages of 30 tranformer coupled audio. > >I do have several 24A's and thought about using one of them for a detector >with screen grid control of the regeneration, but I am not certain how to >set that up. Also, what would be a good audio tube to go with a 24 detector? >Any recommendations? > I'm using 22 Mohm and 12 pF. >I know to keep the grid leak resistor large and the cap small, but is there >any way to calculate the proper values? I do have a set of RCA manuals, so >I have the curves for just about any tube I have. > 3:1 works just fine as will a 9:1 ratio. I have tried filament xformers both as an interstage xformer and as the choke for impedance coupling. Both work but I got better results with proper 3:1 audio interstage xformers. >I have a 3:1 audio interstage transformer, so coupling to the audio amp >shouldn't be a problem. I have seen 9:1 ratios in some designs. What is the >difference if any? Has anyone tried using a small filament transformer >(120V:12.6V) as an interstage transformer or as an audio choke? > I run the phones right in the audio plate circuit. With only 45 volts I don't worry about the DC. >I assume that keeping DC off of my 3k phones is a good idea, but is it that >critical? What should I try to limit the current in the phones to? > Try to find a good National Velvet Vernier. You'll enjoy the tuning. >I am planning on going to the MIT flea on Sunday to look for parts. Does >anyone know if there were ever 5-pin surface mount sockets? All I have ever >seen were 4-pin. > >-- Joe Good luck! Please report your results back to the group. 73 de KW7WT, Walt From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jun 17 14:25:05 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id OAA08171 for ; Wed, 17 Jun 1998 14:25:04 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id OAA03424 for ; Wed, 17 Jun 1998 14:28:00 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA25011 for glowbugs-outgoing; Wed, 17 Jun 1998 10:23:00 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from dogbert.xroads.com (dogbert.xroads.com [206.222.124.36]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id KAA25005 for ; Wed, 17 Jun 1998 10:22:47 -0700 (PDT) Received: from wturansk-mobl.ch.intel.com (slip52.xroads.com [206.222.125.86]) by dogbert.xroads.com (8.8.5/8.8.5) with SMTP id KAA14220; Wed, 17 Jun 1998 10:22:17 -0700 (MST) Message-Id: <3.0.5.32.19980617102048.01112700@mail.xroads.com> X-Sender: turansky@mail.xroads.com X-Mailer: QUALCOMM Windows Eudora Light Version 3.0.5 (32) Date: Wed, 17 Jun 1998 10:20:48 -0700 To: "Joseph M. Krzeszewski" From: Walt Turansky Subject: Re: GB> Reciever Design Cc: glowbugs@piobaire.mines.uidaho.edu In-Reply-To: <199806171600.MAA29530@reno.WPI.EDU> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Joe, FB, go for it. You'll be surprized at the performance. >What Q should I be aiming for in the tank circuit? My design for the 80M >coil right now calls for 80 uH or so. This should give me a Q of 280 or so, >Should I go higher? I use an 80 uH coil on 80 meters and a 20 uH coil on 40 meters with very good results. > >My present design uses three capacitors in a series parallel arrangement to >allow adjustment of the span and band edges. As selected, I should be able >to cover the general portions of 40 & 30M with about 1 kHz/degree of dial >rotation and 1.3 kHz/degree on 80M. How badly will this capacitor arrangement >hurt the Q of the resonant circuit? Should be fine. > >I have a wide variety of tubes to choose from for detector service. I am >leaning towards a 6J5 for the detector (possibly another for audio) or a >6SN7 to cover both RF and audio in one tube. Both are good for detectors and audio stages. I would try the 24A as a screen grid detector with a 27 for an transformer coupled audio stage with the 3:1 xformer that you have. Or use a 6J5 for the audio. Put 45 volts on the detector and audio plate (battery preferred, AES has them) and 22.5 volts on the screen grid. Then use about 250 pF of throttle condenser regen control. It works smooth as silk and the only way to detected the onset of oscillation is the rush of white noise. I have a 32 detector and 2 stages of 30 tranformer coupled audio. > >I do have several 24A's and thought about using one of them for a detector >with screen grid control of the regeneration, but I am not certain how to >set that up. Also, what would be a good audio tube to go with a 24 detector? >Any recommendations? > I'm using 22 Mohm and 12 pF. >I know to keep the grid leak resistor large and the cap small, but is there >any way to calculate the proper values? I do have a set of RCA manuals, so >I have the curves for just about any tube I have. > 3:1 works just fine as will a 9:1 ratio. I have tried filament xformers both as an interstage xformer and as the choke for impedance coupling. Both work but I got better results with proper 3:1 audio interstage xformers. >I have a 3:1 audio interstage transformer, so coupling to the audio amp >shouldn't be a problem. I have seen 9:1 ratios in some designs. What is the >difference if any? Has anyone tried using a small filament transformer >(120V:12.6V) as an interstage transformer or as an audio choke? > I run the phones right in the audio plate circuit. With only 45 volts I don't worry about the DC. >I assume that keeping DC off of my 3k phones is a good idea, but is it that >critical? What should I try to limit the current in the phones to? > Try to find a good National Velvet Vernier. You'll enjoy the tuning. >I am planning on going to the MIT flea on Sunday to look for parts. Does >anyone know if there were ever 5-pin surface mount sockets? All I have ever >seen were 4-pin. > >-- Joe Good luck! Please report your results back to the group. 73 de KW7WT, Walt From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jun 17 23:34:42 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id XAA08521 for ; Wed, 17 Jun 1998 23:34:37 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id XAA29934 for ; Wed, 17 Jun 1998 23:37:39 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id UAA05490 for glowbugs-outgoing; Wed, 17 Jun 1998 20:18:42 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mtiwmhc01.worldnet.att.net (mtiwmhc01.worldnet.att.net [204.127.131.36]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id UAA05485 for ; Wed, 17 Jun 1998 20:18:36 -0700 (PDT) Received: from LOCALNAME ([12.65.130.167]) by mtiwmhc01.worldnet.att.net (InterMail v03.02.03 118 118 102) with SMTP id <19980618031726.BAEA9630@LOCALNAME>; Thu, 18 Jun 1998 03:17:26 +0000 X-Sender: ebjr@postoffice.worldnet.att.net X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: info@tubesandmore.com, BASWAPLIST@FOOTHILL.NET, boatanchors@theporch.com, glowbugs@piobaire.mines.uidaho.edu From: Sandy W5TVW Subject: GB> FT: R-808/GRC-14 Message-Id: <19980618031726.BAEA9630@LOCALNAME> Date: Thu, 18 Jun 1998 03:17:26 +0000 Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Here's a heavy boatanchor for anyone interested! An R-808/GRC-14 receiver in good physical condition and appears to be working. Looks almost new inside! I have absolutely no idea of the value of this beast. I'd like to swap it for "what have you" that might be of interest to me. Pickup only, as this one would cost a bundle to ship! I'm always looking for old (new to me) toys, military or civilian gear, test equipment, General Radio stuff. Would like to find a 6 meter Gonset Communicator 2 or 3 that's complete. 73, Sandy W5TVW From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jun 18 01:28:14 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id BAA08580 for ; Thu, 18 Jun 1998 01:28:13 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id BAA30190 for ; Thu, 18 Jun 1998 01:31:17 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id VAA05964 for glowbugs-outgoing; Wed, 17 Jun 1998 21:03:06 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.iaxs.net (root@alyssa.iaxs.net [205.164.100.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id VAA05959 for ; Wed, 17 Jun 1998 21:03:02 -0700 (PDT) Received: from citrus.iaxs.net (bill@citrus.iaxs.net [206.43.66.3]) by mail.iaxs.net (8.8.8/iaxs-19971103) with ESMTP id XAA02465 for ; Wed, 17 Jun 1998 23:02:21 -0500 (CDT) Received: (from bill@localhost) by citrus.iaxs.net (8.8.8/iaxs-citrus-19971103) id XAA08747 for glowbugs@piobaire.mines.uidaho.edu; Wed, 17 Jun 1998 23:02:19 -0500 (CDT) Date: Wed, 17 Jun 1998 23:02:19 -0500 (CDT) From: Bill Hawkins Message-Id: <199806180402.XAA08747@citrus.iaxs.net> To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Tapped IF transformers Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Continuing to transform a BC-453 hulk into a 60 KHz amp and filter, I find that the BC-453 IF coils are tapped at about 25% (35 ohms common to tap, 140 ohms common to top of coil). The common and tap are brought out. The top of the coil just ties to the resonating cap. Why'd they throw away 75% of the voltage gain? The only thing I can come up with is that the IF can is standard across all of the command sets, including the 180 pf resonating caps and 17 pf trimmers. You'd need a lot of L to get that to resonate at 85 KC. Does it enhance Q to have the tube load tapped down on the coil? If I'm gonna put three IF cans in series, should I use a small cap to tie the top of one secondary to the primary of the next, or can I do that at the tap? I'll try the tap first, of course. Regards, Bill Hawkins From jshillw6ivw@earthlink.net Thu Jun 18 02:34:46 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id CAA08615 for ; Thu, 18 Jun 1998 02:34:46 GMT Received: from germany.it.earthlink.net (germany-c.it.earthlink.net [204.250.46.123]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id CAA03647 for ; Thu, 18 Jun 1998 02:37:50 -0400 (EDT) Received: from default (pool0033-max4.ds13-ca-us.dialup.earthlink.net [209.178.16.83]) by germany.it.earthlink.net (8.8.7/8.8.5) with SMTP id XAA14103 for ; Wed, 17 Jun 1998 23:37:46 -0700 (PDT) Message-Id: <3.0.5.32.19980617233727.00af5960@earthlink.net> X-Sender: jshillw6ivw@earthlink.net X-Mailer: QUALCOMM Windows Eudora Pro Version 3.0.5 (32) Date: Wed, 17 Jun 1998 23:37:27 -0700 To: "Joseph M. Krzeszewski" From: Jim Hill Subject: Re: GB> Reciever Design In-Reply-To: <199806171600.MAA29530@reno.WPI.EDU> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Status: RO Joe: Go to the stacks in the MIT library and brouse through QST and Radio Craft magazines through the late 20's and early 30's for regenerative receiver articles. 24A's were used as regenerative detectors. I can't quote specific articles, but am pretty sure tetrodes and pentodes made better detectors than triodes. You could look through the early 30's and see what tubes were used. When I went to Purdue (1948-1952), I discovered that I could go into the stacks by walking up like I owned the place, signing a random name in the log, and entering the stacks. I enjoyed looking at old QST's and Popular Mechanics magazines. I didn't know about Radio News at that time. Short Wave Craft is another good magazine, but it probably isn't in the library. Old issues of the ARRL handbook are also good sources If you are unsuccessful, let me know and I'll repro an article or two. 73's Jim At 12:00 PM 6/17/98 -0400, you wrote: >Greetings all. > >Since I was lucky enough to have inherited several hundred vacuum tubes from >the Physics department here at school, I now have the opportunity to build >that hollow state regenerative receiver I have been dreaming of for a while. >I have read the glowbug archives and have a fairly good feel for what makes >a good regeny, but I thought I would ask a few questions now while I am >still doing calculations. > >What Q should I be aiming for in the tank circuit? My design for the 80M >coil right now calls for 80 uH or so. This should give me a Q of 280 or so, >Should I go higher? > >My present design uses three capacitors in a series parallel arrangement to >allow adjustment of the span and band edges. As selected, I should be able >to cover the general portions of 40 & 30M with about 1 kHz/degree of dial >rotation and 1.3 kHz/degree on 80M. How badly will this capacitor arrangement >hurt the Q of the resonant circuit? > >I have a wide variety of tubes to choose from for detector service. I am >leaning towards a 6J5 for the detector (possibly another for audio) or a >6SN7 to cover both RF and audio in one tube. > >I do have several 24A's and thought about using one of them for a detector >with screen grid control of the regeneration, but I am not certain how to >set that up. Also, what would be a good audio tube to go with a 24 detector? >Any recommendations? > >I know to keep the grid leak resistor large and the cap small, but is there >any way to calculate the proper values? I do have a set of RCA manuals, so >I have the curves for just about any tube I have. > >I have a 3:1 audio interstage transformer, so coupling to the audio amp >shouldn't be a problem. I have seen 9:1 ratios in some designs. What is the >difference if any? Has anyone tried using a small filament transformer >(120V:12.6V) as an interstage transformer or as an audio choke? > >I assume that keeping DC off of my 3k phones is a good idea, but is it that >critical? What should I try to limit the current in the phones to? > >I am planning on going to the MIT flea on Sunday to look for parts. Does >anyone know if there were ever 5-pin surface mount sockets? All I have ever >seen were 4-pin. > >-- Joe > >-- >Joseph M. Krzeszewski Mechanical Engineering / Materials Science >N5LHF Jack of All Trades, Master of None... Yet >jski@wpi.edu -= CCC Shop Student Hardware Specialist =- > > From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jun 18 10:18:39 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id KAA08865 for ; Thu, 18 Jun 1998 10:18:39 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id KAA31268 for ; Thu, 18 Jun 1998 10:21:48 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id GAA18464 for glowbugs-outgoing; Thu, 18 Jun 1998 06:56:47 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from smtp02.primenet.com (daemon@smtp02.primenet.com [206.165.6.132]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id GAA18459 for ; Thu, 18 Jun 1998 06:56:41 -0700 (PDT) Received: (from daemon@localhost) by smtp02.primenet.com (8.8.8/8.8.8) id GAA08515; Thu, 18 Jun 1998 06:56:27 -0700 (MST) Received: from usr07.primenet.com(206.165.6.207) via SMTP by smtp02.primenet.com, id smtpd008487; Thu Jun 18 06:56:19 1998 Date: Thu, 18 Jun 1998 06:56:17 -0700 (MST) From: Chris Trask To: Bill Hawkins cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Tapped IF transformers In-Reply-To: <199806180402.XAA08747@citrus.iaxs.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On Wed, 17 Jun 1998, Bill Hawkins wrote: > Continuing to transform a BC-453 hulk into a 60 KHz amp and filter, > I find that the BC-453 IF coils are tapped at about 25% (35 ohms > common to tap, 140 ohms common to top of coil). The common and tap > are brought out. The top of the coil just ties to the resonating > cap. Why'd they throw away 75% of the voltage gain? The only > thing I can come up with is that the IF can is standard across all > of the command sets, including the 180 pf resonating caps and 17 pf > trimmers. You'd need a lot of L to get that to resonate at 85 KC. > Does it enhance Q to have the tube load tapped down on the coil? > The purpose of doing this is to either get better selectivity or for impedance matching. This method is easier to tune than the capacitive tap method. > If I'm gonna put three IF cans in series, should I use a small cap > to tie the top of one secondary to the primary of the next, or can > I do that at the tap? I'll try the tap first, of course. > If you were making a three-stage stagger-tuned IF, you would use the tap on the first and last IF cans, and capacitively couple the cans together at the top. ,----------------------. Circuit Design for the / What's all this \ RF Impaired / extinct stuff, anyhow? / \ _______,--------------' Chris Trask / N7ZWY _ |/ Principal Engineer oo\ ATG Design Services (__)\ _ P.O. Box 25240 \ \ .' `. Tempe, Arizona 85285-5240 \ \ / \ \ '" \ Technical Editor, . ( ) \ QRP Quarterly '-| )__| :. \ QRP ARCI 9464 | | | | \ '. c__; c__; '-..'>.__ Email: ctrask@primenet.com http://www.primenet.com/~ctrask Graphics by Loek Frederiks From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jun 18 10:37:34 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id KAA08890 for ; Thu, 18 Jun 1998 10:37:29 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id KAA25261 for ; Thu, 18 Jun 1998 10:40:37 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA18669 for glowbugs-outgoing; Thu, 18 Jun 1998 07:16:43 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from els.imed.com (imed.com [192.246.2.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id HAA18664 for ; Thu, 18 Jun 1998 07:16:37 -0700 (PDT) Received: from mails.imed.com by els.imed.com with SMTP (1.38.193.5/15.6) id AA06497; Thu, 18 Jun 1998 09:15:30 -0500 Received: from ccMail by mails.imed.com (IMA Internet Exchange 2.1 Enterprise) id 000C1B55; Thu, 18 Jun 98 09:15:10 -0600 Mime-Version: 1.0 Date: Thu, 18 Jun 1998 09:08:23 -0600 Message-Id: <000C1B55.@mails.imed.com> From: mack@mails.imed.com (Ray Mack) Subject: Re: GB> Tapped IF transformers To: glowbugs@piobaire.mines.uidaho.edu, Bill Hawkins Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Description: cc:Mail note part Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Bill: It does, indeed, enhance the Q of the coil. It is the VLF equivalent of a cavity resonator for VHF. You tap a low impedance source or load down on the resonator (in this case the inductor) to match the impedance. The impedance of the resonator (the top of the parallel circuit) is very high, whereas the impedance of the tube is in the tens of Kohms. Tying the cans together at the taps will work if the primaries and seconaries are tapped for the same impedances. Even if they aren't they should be pretty close. If you couple them at the top you will probably not need very much capacitance. probably 10 to 50 uuf should do it. If you give me the inducatnce and DC resistance for the coil and the capacitance I can model them using software to give you an idea what capacitance to use. Personally, I like the tap idea as an expedient "close enough" solution. Ray Mack WD5IFS mack@mails.imed.com ______________________________ Reply Separator _________________________________ Subject: GB> Tapped IF transformers Author: Bill Hawkins at mails Date: 6/17/98 11:02 PM Continuing to transform a BC-453 hulk into a 60 KHz amp and filter, I find that the BC-453 IF coils are tapped at about 25% (35 ohms common to tap, 140 ohms common to top of coil). The common and tap are brought out. The top of the coil just ties to the resonating cap. Why'd they throw away 75% of the voltage gain? The only thing I can come up with is that the IF can is standard across all of the command sets, including the 180 pf resonating caps and 17 pf trimmers. You'd need a lot of L to get that to resonate at 85 KC. Does it enhance Q to have the tube load tapped down on the coil? If I'm gonna put three IF cans in series, should I use a small cap to tie the top of one secondary to the primary of the next, or can I do that at the tap? I'll try the tap first, of course. Regards, Bill Hawkins From ebjr@worldnet.att.net Thu Jun 18 23:49:47 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id XAA00406 for ; Thu, 18 Jun 1998 23:49:47 GMT Received: from mtiwmhc03.worldnet.att.net (mtiwmhc03.worldnet.att.net [204.127.131.38]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id XAA03522 for ; Thu, 18 Jun 1998 23:50:11 -0400 (EDT) Received: from LOCALNAME ([12.65.209.162]) by mtiwmhc03.worldnet.att.net (InterMail v03.02.03 118 118 102) with SMTP id <19980619034938.QKCM21687@LOCALNAME> for ; Fri, 19 Jun 1998 03:49:38 +0000 X-Sender: ebjr@postoffice.worldnet.att.net X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: "Joseph M. Krzeszewski" From: Sandy W5TVW Subject: Re: GB> Reciever Design Message-Id: <19980619034938.QKCM21687@LOCALNAME> Date: Fri, 19 Jun 1998 03:49:38 +0000 Status: RO At 12:00 PM 6/17/98 -0400, you wrote: >Greetings all. > >Since I was lucky enough to have inherited several hundred vacuum tubes from >the Physics department here at school, I now have the opportunity to build >that hollow state regenerative receiver I have been dreaming of for a while. >I have read the glowbug archives and have a fairly good feel for what makes >a good regeny, but I thought I would ask a few questions now while I am >still doing calculations. > >What Q should I be aiming for in the tank circuit? My design for the 80M >coil right now calls for 80 uH or so. This should give me a Q of 280 or so, >Should I go higher? > >My present design uses three capacitors in a series parallel arrangement to >allow adjustment of the span and band edges. As selected, I should be able >to cover the general portions of 40 & 30M with about 1 kHz/degree of dial >rotation and 1.3 kHz/degree on 80M. How badly will this capacitor arrangement >hurt the Q of the resonant circuit? > The "Q" values should be fine as you stated. Big thing is playing with the tuning cap values etc. to get the portion of the band you want. >I have a wide variety of tubes to choose from for detector service. I am >leaning towards a 6J5 for the detector (possibly another for audio) or a >6SN7 to cover both RF and audio in one tube. If you do it with triodes, stick to the lower mu triodes with amplification factor at 20-25 or less. 6SN7, 6J5 should be fine. I'd limit the plate voltage to 100-150 volts on the AF amp and the detector should have around 15-30 volts max on it when it's in operation 'just' oscillating. > >I do have several 24A's and thought about using one of them for a detector >with screen grid control of the regeneration, but I am not certain how to >set that up. Also, what would be a good audio tube to go with a 24 detector? >Any recommendations? If you do modern octal tubes, I'd try the 6J7 or 6K7 as the shield is built in! I'd stay away rom pentode detectors that are single ended like the 6SJ7/6SK7/6BA6 etc. It's easy to get into trouble with them and hard to isolate the grid from the other circuitry. Limit the screen voltage to 25-30 volts max. >I know to keep the grid leak resistor large and the cap small, but is there >any way to calculate the proper values? I do have a set of RCA manuals, so >I have the curves for just about any tube I have. For the detector, you will have to experiment! Grid leak can be from 1 to 10 megs. The series cap can be from 15-100 pf on shortwave up to 250 pf on the broadcast band. Again, you'll have to experiment. > >I have a 3:1 audio interstage transformer, so coupling to the audio amp >shouldn't be a problem. I have seen 9:1 ratios in some designs. What is the >difference if any? Has anyone tried using a small filament transformer >(120V:12.6V) as an interstage transformer or as an audio choke? I always used a 3:1 audio transformer. You can still get them at Antique Electronic Supply for about 8-9 bucks. > >I assume that keeping DC off of my 3k phones is a good idea, but is it that >critical? What should I try to limit the current in the phones to? I don't worry about this. I regularly run 45-100 volts thru the phones. (Using a 2000 ohm headset) > >I am planning on going to the MIT flea on Sunday to look for parts. Does >anyone know if there were ever 5-pin surface mount sockets? All I have ever >seen were 4-pin. > Yes there were. General Radio made some nice ones. Try and find them though! 73, Sandy W5TVW From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jun 19 08:04:55 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id IAA00664 for ; Fri, 19 Jun 1998 08:04:55 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id IAA01908 for ; Fri, 19 Jun 1998 08:05:24 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id EAA01999 for glowbugs-outgoing; Fri, 19 Jun 1998 04:37:35 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from ms1.nwla.com (root@[207.22.207.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id EAA01994 for ; Fri, 19 Jun 1998 04:37:31 -0700 (PDT) From: w5sum@ms1.nwla.com Received: from w5sum.nwla.com (ppp16.nwla.com [207.22.207.30]) by ms1.nwla.com (8.7.5/8.7.3) with SMTP id GAA20011; Fri, 19 Jun 1998 06:37:20 -0500 Message-Id: <199806191137.GAA20011@ms1.nwla.com> To: baswaplist@foothill.net, glowbugs@piobaire.mines.uidaho.edu Date: Fri, 19 Jun 1998 06:42:43 +0000 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: GB> I need a... Priority: normal Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO B&W FC15A filament choke. Anyone got one to sell/swap? Ronnie W5SUM - Ronnie Hull PO Box 8941 Shreveport, La 71148 From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jun 19 10:04:02 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id KAA00741 for ; Fri, 19 Jun 1998 10:04:02 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id KAA02228 for ; Fri, 19 Jun 1998 10:04:32 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id GAA03196 for glowbugs-outgoing; Fri, 19 Jun 1998 06:41:59 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from atl.org ([199.184.215.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id GAA03191 for ; Fri, 19 Jun 1998 06:41:56 -0700 (PDT) Received: from office (office.atl.org [199.184.215.100]) by atl.org (8.8.0/8.8.0) with SMTP id JAA04099 for ; Fri, 19 Jun 1998 09:14:23 -0400 (EDT) Message-ID: <35897BAA.7055@atl.org> Date: Thu, 18 Jun 1998 21:42:18 +0100 From: BOB DUCKWORTH Reply-To: bob@atl.org Organization: Atlanta Technology Library and Museum X-Mailer: Mozilla 3.01Gold (WinNT; I) MIME-Version: 1.0 To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> 30+ paper items to sell. http://wits.atl.org Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Have 30+ paper items to sell at http://wits.atl.org It's easier to keep track this way. -bob From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jun 19 10:26:13 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id KAA00758 for ; Fri, 19 Jun 1998 10:26:13 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id KAA13898 for ; Fri, 19 Jun 1998 10:26:43 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id GAA03472 for glowbugs-outgoing; Fri, 19 Jun 1998 06:51:34 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from m6.sprynet.com (m6.sprynet.com [165.121.1.89]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id GAA03467 for ; Fri, 19 Jun 1998 06:51:32 -0700 (PDT) Received: from default (hdn102-029.hil.compuserve.com [206.175.105.29]) by m6.sprynet.com (8.8.5/8.8.5) with SMTP id GAA10337 for ; Fri, 19 Jun 1998 06:51:19 -0700 (PDT) From: "Art Winterbauer" To: Subject: GB> B&W miniductor stock: Website Date: Fri, 19 Jun 1998 07:39:50 -0600 Message-ID: <01bd9b87$bbc545c0$326aafce@default> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 4.71.1712.3 X-MimeOLE: Produced By Microsoft MimeOLE V4.71.1712.3 Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I stumbled across this whilst cruising the Web. Many of you are probably aware of the B&W website, but for those who aren't: http://www.bwantennas.com/index.htm May come in handy for those projects requiring miniductors, complete with their part numbers. Pricey though. Art WA5OES From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jun 19 22:15:42 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id WAA01272 for ; Fri, 19 Jun 1998 22:15:42 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id WAA19059 for ; Fri, 19 Jun 1998 22:16:20 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id SAA16763 for glowbugs-outgoing; Fri, 19 Jun 1998 18:53:06 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from smtp2.erols.com (smtp2.erols.com [207.172.3.235]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id SAA16758 for ; Fri, 19 Jun 1998 18:53:00 -0700 (PDT) Received: from LOCALNAME (207-172-41-204.s204.tnt10.brd.erols.com [207.172.41.204]) by smtp2.erols.com (8.8.8/8.8.5) with SMTP id VAA04931; Fri, 19 Jun 1998 21:52:22 -0400 (EDT) Message-Id: <199806200152.VAA04931@smtp2.erols.com> X-Sender: wmeara@pop.erols.com X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Sat, 20 Jun 1998 01:50:19 -0400 To: glowbugs@piobaire.mines.uidaho.edu, homebrew@qth.net From: Bill Meara Subject: GB> Mighty Midget RX update Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I put the front panel on my Mighty Midget RX today and noticed a BIG improvement in frequency stability. I have the main tuning cap very solidly joined to both the chassis and the front panel - I can now hit the table with my fist without any frequency change. Annoying hand capacitance effects have diasppeared also. For the panel, I just put a false front over the original Heath Sixer panel and drilled a few new holes. I made the false front out of some very light aluminum sheeting material they sell in the storm door secion of Home Depot. You can cut the stuff easily. Worked great in this application. I'm not using a reduction drive - but the main tuning cap seems to work pretty well without one. Even SSB signals are pretty easy to tune in. I still haven't got the crystal filter working properly, but I'm growing fond of the 455 kc IF can that I've put in as a substitute. It's pretty broad, but the phone signals sound great and I can do some very pleasant shortwave broadcast listening on 40 meters in the evening. Since I was planning on using this RX for 75 and 40 AM work (with my DX-60B) maybe I'll put off the crystal filter for a while... Any estimates of how wide my bandwith is with two 455 kc IF transformers as the only selective elements in my IF chain? BTW, this might turn out to be the solution for those who are having trouble finding crystals... Maybe we could just arrange to switch the crystals in when more selectivity is needed and use the 455 kc can (alone)when we want to listen to a broad chunk of the ether Getting the ganged capacitor in the RF Amp and convereter to track properly was a bit of a chore, but with the use of a couple of trimmer caps, I think I have it right. Wish I had more audio output. This is turning out to be be a very FB project. I think my 20 meter CW solid state rx with 3 pole filter is a better radio, but this Mightly Midget tunes all of 40 and all of 80 and is wide enough for the phone sigs. And of course there is something magical about the tubes. All that hardware sitting on the chassis just looks good! Even the pill bottle coils look very cool. How are the other MM projects coming along? Is there an Italian version under development? 73 de N2CQR Bill Meara, Falls Church, Virginia wmeara@erols.com G-QRP #7965 http://www.mindspring.com/~johnmb/billm.htm From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 20 11:49:22 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id LAA01674 for ; Sat, 20 Jun 1998 11:49:22 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id LAA08805 for ; Sat, 20 Jun 1998 11:50:10 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA22358 for glowbugs-outgoing; Sat, 20 Jun 1998 08:18:46 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from smtp2.erols.com (smtp2.erols.com [207.172.3.235]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id IAA22353 for ; Sat, 20 Jun 1998 08:18:43 -0700 (PDT) Received: from LOCALNAME (207-172-70-234.s234.tnt11.brd.erols.com [207.172.70.234]) by smtp2.erols.com (8.8.8/8.8.5) with SMTP id LAA12449; Sat, 20 Jun 1998 11:18:26 -0400 (EDT) Message-Id: <199806201518.LAA12449@smtp2.erols.com> X-Sender: wmeara@pop.erols.com X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Sat, 20 Jun 1998 15:15:44 -0400 To: glowbugs@piobaire.mines.uidaho.edu, homebrew@qth.net From: Bill Meara Subject: GB> More Midget Miscellanea! Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO David Newkirk posted this excellent info on the USENET. I thought it would be of interest to Mighty Midget builder and the Glowbug community in general: ------------------------------------------- Bill Meara wrote in message <358bb9a6.164781316@news.erols.com>... [deletions] >A number of us are building Lew McCoy's Mighty Midget receiver (April >1966 QST). Here's an update on my version: [deletions] >I still haven't got the crystal filter working properly, but >I'm growing fond of the 455 kc IF can that I've put in as a >substitute. It's pretty broad, but the phone signals sound great and >I can do some very pleasant shortwave broadcast listening on 40 meters >in the evening. Getting that crystal filter to exhibit anything like flat-topped selectivity with a top width anything like the marked frequencies of the crystals will be hit or miss, and almost certainly miss, with that circuit -- because it wasn't actually *designed* to work right. From the late 1950s through the appearance of the mighty midget, you can find similar "push-pull crystals across a tube's plate inductor" filters in a number of ARRL publications (the "2X4+1 Superheterodyne" has one at 1.7 MHz; another receiver had a couple in succeeding stages at about 4.4 MHz). None of them take into account particular I/O termination or the crystals' pole-zero spacing; all seemed to have been built in the belief that whatever filtering results has a top equal in width to the frequencies marked on the crystals. And so far as I know, the performance of none of those filters was *measured* with equipment capable of really characterizing their response shape and loss. What builders probably experienced was an overly lossy response with unequal peaks. To the untrained ear -- and without AGC -- this probably sounded like good CW selectivity. Depending on its loss, such a filter *may* have been worth using. But not with only one IF stage and no attention paid to termination. You can find a somewhat updated version of such a filter -- for 1.7 MHz, at the output of a dual-gate MOSFET mixer -- in Hayward and DeMaw's *Solid State Design for the Radio Amateur*. Computer-simulated using realistic crystal parameters, it works just as described above. That is, *it doesn't work.* > Since I was planning on using this RX for 75 and 40 >AM work (with my DX-60B) maybe I'll put off the crystal filter for a >while... In listening to your favorite sections of band with very wide selectivity, you're experiencing what many newer hams may never hear with a store-bought radio: A wonderful EM analog to the sounds of a forest, out of which your brain's ability to aurally select and focus on particular pitches and cadences can copy almost any CW station audible. It's a great thing to have on while you're doing housework or browse-reading within earshot of the receiver. Kinda like being able to look out of your kitchen window and see down all your block's backyards at once. >Any estimates of how wide my >bandwith is with two 455 kc IF transformers as the only selective >elements >in my IF chain? The IF subsection of the receiver chapter of ARRL Handbooks of the late 1950s and early 1960s had a table that gave nominal bandwidths at various IFs versus number of stages. >And of >course there is something magical about the tubes. All that hardware >sitting on the chassis just looks good! Even the pill bottle coils >look >very cool. Turn out the lights, look carefully at the tube envelopes, and you may see little patches of blue fluorescence at spots where the cathodes' electron stream has managed to miss the plate and strike the glass. In a gain-controlled tube, these patches may shift in shape and position as you adjust the gain. Regards, David Newkirk, W9VES dpnewkirk@home.com 73 de N2CQR Bill Meara, Falls Church, Virginia wmeara@erols.com G-QRP #7965 http://www.mindspring.com/~johnmb/billm.htm From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 20 13:50:49 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id NAA01737 for ; Sat, 20 Jun 1998 13:50:48 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id NAA12152 for ; Sat, 20 Jun 1998 13:51:37 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA23751 for glowbugs-outgoing; Sat, 20 Jun 1998 10:27:20 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from Rt66.com (mack.rt66.com [198.59.162.1]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id KAA23746 for ; Sat, 20 Jun 1998 10:27:15 -0700 (PDT) From: msix@rt66.com Received: from localhost (msix@localhost) by Rt66.com (8.8.7/8.8.6) with SMTP id LAA25387; Sat, 20 Jun 1998 11:24:29 -0600 (MDT) Date: Sat, 20 Jun 1998 11:24:29 -0600 (MDT) To: glowbugs@piobaire.mines.uidaho.edu cc: Bill Meara , dpnewkirk@home.com, homebrew@qth.net Subject: GB> Xtal filters In-Reply-To: <199806201518.LAA12449@smtp2.erols.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On Sat, 20 Jun 1998, Bill Meara wrote: > David Newkirk posted this excellent info on the USENET. I thought it would > be of interest to Mighty Midget builder and the Glowbug community in general: > David Newkirk, W9VES > dpnewkirk@home.com I don't know what prompted his post, but David is right on... HB lattice filters are not plug and play, but this is seldom emphasized in Rx and Tx articles. Some of the very early QST articles on SSB filter design, as opposed to Rx and Tx articles, got into the gory details of tweaking xtal resonances and terminations, but it wasn't pretty! Both half and full lattice filters can be made fairly symmetrical and well-behaved, but this takes more understanding, patience and test equipment than most hams are willing to put into any but a serious HB project, With lattice filters, pole-zero spacing and termination is everything. I confirmed this years ago after making several and sweeping them with modest-to-poor results. They got much better by moving xtal frequencies and tweaking terminations, but this was laborious, almost painful... For CW, I now use Lamb filters for tube Rxs and ladders for S/S Rxs. They are simple and easy to make, and work fine. For SSB, I don't know any easy answer. Roll your own and grind thru the whole tweaking process or buy one and hope for the best... Collins mechanicals seem to be generally well-behaved, but many HF xtal filters aren't exactly plug and play. Some of the ones in my old BAs are kinda ugly... 73 - John W7ZFB at msix@rt66.com 1400 Catron SE Albq, NM 87123 *********************************************************** * Homebrewer since 1947 CW BoatAnchors Norcal #930 * * Want Halli SR150/400/2000 Xcvrs, dead or alive * * Want Elmac PMR-7 Receiver * *********************************************************** ERP isn't everything, but then neither is money... From jski Mon Jun 22 09:56:13 1998 Subject: Re: GB> Headphone repair? To: glowbugs@piobaire.mines.uidaho.edu Date: Mon, 22 Jun 1998 09:56:13 +0000 (GMT) In-Reply-To: <3.0.1.32.19980621200528.006a1638@pop.mindspring.com> from "Garey Barrell" at Jun 21, 98 08:05:28 pm X-Mailer: ELM [version 2.4 PL25] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Length: 2428 Status: RO >From a musty, dusty corner of Garey Barrell's mind came... > > I need to tap the collective wisdom of the group. I have several pairs of > Trimm 'phones. While they all work, there is miscellaneous crud / rust / ? > on the diaphragms. Each set has the same problem. One cap comes off fine. > One cap resists all efforts at removal !! While I "think" I could get > the unremovable caps off with some combination of Channel-Locks, bench vise > and / or pipe wrenches, I suspect there is a safer way!! At least one > less likely to result in total destruction.. > The set of phones I picked up at the MIT flea market had a similar problem. One side would work intermitently. Turns out that there was a tiny bit of rust on the diaphram that was mucking things up. I cleaned that off and all was well. > First thought was EO's Handbook HB-1 "Headphones: Operation and Repair." > All manner of excellent advice re: History, Ears, Diaphragm, Impedances, > coil rewinding, remagnetization, etc., etc ., nary a word about how to get > the #$@$@#* caps off!! Of course the Handbook was written in 1948, and > then the caps had only been on for 20-30 years, not 50-80 years.... Might > have something to do with the problem. > Does that book say anything about low volume in one side of series connected phones? That is the problem I am having now. I suspect that the magnets on the weak side are old and tired. Any ideas? > So... Freeze 'em? Heat Gun 'em? Soak "em in motor oil? De-Oxit? (Well, > it fixes everything else!) Or just forget about it and use/enjoy them > until they croak??? > > Any and all suggestions / ideas greatly appreciated! > In my case, the cases are made of aluminum. After untold years in someone's basement, the aluminum oxidized and cloged up the threads. I could see the white powdery aluminum oxide creeping out from under the caps. I took a dental pick and carefully cleaned out the oxide from under the edge of the cap. After that, I could turn it a little. Then I just worked the cap back and forth until it unscrewed. I got quite a little pile of white dust out of them. After the cap was off, I used the pick to clean the threads a little more. That's what worked for me. -- Joe -- Joseph M. Krzeszewski Mechanical Engineering / Materials Science N5LHF Jack of All Trades, Master of None... Yet jski@wpi.edu -= CCC Shop Student Hardware Specialist =- From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 20 19:53:46 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id TAA01932 for ; Sat, 20 Jun 1998 19:53:46 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id TAA17132 for ; Sat, 20 Jun 1998 19:54:41 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id QAA25759 for glowbugs-outgoing; Sat, 20 Jun 1998 16:27:06 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id QAA25754 for ; Sat, 20 Jun 1998 16:27:03 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Sat, 20 Jun 1998 16:27:02 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> VT-136 Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Anyone know what this is? Says SC-278 on it. Ken From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 20 21:03:12 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id VAA01970 for ; Sat, 20 Jun 1998 21:03:12 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id VAA26985 for ; Sat, 20 Jun 1998 21:04:08 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id RAA26669 for glowbugs-outgoing; Sat, 20 Jun 1998 17:46:34 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from nyct.net (root@bsd1.nyct.net [204.141.86.3]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id RAA26661 for ; Sat, 20 Jun 1998 17:46:30 -0700 (PDT) Received: from ppp52.nyct.net (ppp52.nyct.net [207.198.184.52]) by nyct.net (8.8.8/8.8.7) with SMTP id UAA27196; Sat, 20 Jun 1998 20:45:52 -0400 (EDT) (envelope-from artdeco@nyct.net) Message-Id: <3.0.5.16.19980620204530.383f3a98@nyct.net> X-Sender: artdeco@nyct.net X-Mailer: QUALCOMM Windows Eudora Pro Version 3.0.5 (16) Date: Sat, 20 Jun 1998 20:45:30 To: Ken Gordon From: Carl Ratner Subject: Re: GB> VT-136 Cc: glowbugs@piobaire.mines.uidaho.edu In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO At 04:27 PM 6/20/98 -0700, you wrote: >Anyone know what this is? Says SC-278 on it. > >Ken VT-136 = 1625 I have a fairly complete cross-reference of VT tubes to standard designations. If y'all are interested, I could post it to the list. 73 Carl Ratner Restorer of vintage radios asnd aspiring glowbugger From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 20 21:47:35 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id VAA02005 for ; Sat, 20 Jun 1998 21:47:23 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id VAA23145 for ; Sat, 20 Jun 1998 21:48:19 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id SAA26890 for glowbugs-outgoing; Sat, 20 Jun 1998 18:27:01 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from main.aeneas.net (root@main.aeneas.net [207.203.176.23]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id SAA26885 for ; Sat, 20 Jun 1998 18:26:55 -0700 (PDT) Received: from [207.203.177.19] (pmj304.aeneas.net [207.203.177.19]) by main.aeneas.net (8.6.12/8.6.9) with SMTP id UAA28597; Sat, 20 Jun 1998 20:29:17 -0500 X-Sender: w5hvv@mail.aeneas.net Message-Id: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Sat, 20 Jun 1998 20:26:44 +0600 To: glowbugs@piobaire.mines.uidaho.edu, BOATANCHORS@listserv.tempe.gov, amps@contesting.com From: w5hvv@aeneas.net (Roderick M. Fitz-Randolph) Subject: GB> NCL-2000 Amp Tubes? Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I have acquired the bandswitch and coil set for the output of the National NCL-2000 amplifier. I am about to build a rig that will use that in the final. In order for me to determine if the 4D32 tube I intend to use can be used with that coil, I believe I need to know the output capacitance of the final tubes, their voltage, and current in normal use so that I can make comparisons and determine whether or not I must modify the coil. Can anyone help? Thank you, Rod, N5HV w5hvv@aeneas.net From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 20 22:26:54 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id WAA02028 for ; Sat, 20 Jun 1998 22:26:53 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id WAA02352 for ; Sat, 20 Jun 1998 22:27:44 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id TAA27124 for glowbugs-outgoing; Sat, 20 Jun 1998 19:09:18 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.xmission.com (mail.xmission.com [198.60.22.22]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id TAA27119 for ; Sat, 20 Jun 1998 19:09:15 -0700 (PDT) Received: from slc508h.modem.xmission.com (xmission.com) [166.70.2.254] by mail.xmission.com with esmtp (Exim 1.82 #2) id 0ynZYV-0007Ss-00; Sat, 20 Jun 1998 20:08:32 -0600 Message-ID: <358C16E4.EB85C4CD@xmission.com> Date: Sat, 20 Jun 1998 20:09:09 +0000 From: Dexter Francis Reply-To: cwest@xmission.com Organization: CWest Tube Sales X-Mailer: Mozilla 4.05 (Macintosh; I; PPC) MIME-Version: 1.0 To: "Roderick M. Fitz-Randolph" CC: glowbugs@piobaire.mines.uidaho.edu, BOATANCHORS@listserv.tempe.gov, amps@contesting.com Subject: Re: GB> NCL-2000 Amp Tubes? References: Content-Type: text/plain; charset=us-ascii; x-mac-type="54455854"; x-mac-creator="4D4F5353" Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO If the 4D32 was made by Raytheon, my data shhet indicates that the grid to plate capacitance was 0.27, input was 28.0 and Output was 13.0. (pf I assume) Plate max V was 750, Grid 1 was -200 and Grid 2 was 350. Plate current was 300 ma, Grid 1 current was 15 ma. and Grid 2 was 35 ma. 50 wats dissipation, 1.5 watts drive, 135 watts output. Good luck with the project. -df *** CWest - P.O. Box 22443 Salt Lake City, Utah 84122 *** Visit our Web Page @ http://www.xmission.com/~cwest From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 21 13:06:38 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id NAA02464 for ; Sun, 21 Jun 1998 13:06:38 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id NAA19314 for ; Sun, 21 Jun 1998 13:07:46 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA03083 for glowbugs-outgoing; Sun, 21 Jun 1998 09:44:58 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id JAA03078 for ; Sun, 21 Jun 1998 09:44:55 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Sun, 21 Jun 1998 09:44:55 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> New acquisition... Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Well, the good old U. of I. just upgraded their Carillon sound system, so guess who got the old one? Myself! Interesting item. I got a powersupply which has 2 ea 3B28s in it, a dual-section preamp, and two amps, each containing a Push Pull pair of 805s, AND 4 ea NIB 805s extra. Lessee....805s are good for about 215 watts output each in Class C CW, and a pair of them running Class B push-pull provides 350 Watts output. Wonder what I could modulate with those? My PP 304TL Hartley? :-) (Not likely). Now to try to figure out what output impedance the big "modulation" transformers are... Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 21 13:39:56 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id NAA02483 for ; Sun, 21 Jun 1998 13:39:55 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id NAA13978 for ; Sun, 21 Jun 1998 13:41:04 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA03703 for glowbugs-outgoing; Sun, 21 Jun 1998 10:23:58 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from main.aeneas.net (root@main.aeneas.net [207.203.176.23]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id KAA03698 for ; Sun, 21 Jun 1998 10:23:55 -0700 (PDT) Received: from [207.203.177.55] (pmj340.aeneas.net [207.203.177.55]) by main.aeneas.net (8.6.12/8.6.9) with SMTP id MAA26844; Sun, 21 Jun 1998 12:26:40 -0500 X-Sender: w5hvv@mail.aeneas.net Message-Id: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Sun, 21 Jun 1998 12:24:02 +0600 To: BOATANCHORS@listserv.tempe.gov, glowbugs@piobaire.mines.uidaho.edu, baswaplist@foothill.net, forsale-swap@qth.net From: w5hvv@aeneas.net (Roderick M. Fitz-Randolph) Subject: GB> Heath HP-23A or HP-23B Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I am in the market for a Heath HP-23A or HP-23B power supply. It must be in completely functional status and I am only interested in one that is in very good to excellent condition visually, as well. If you have one and are willing to part with it, please notify me of the price at w5hvv@aeneas.net. Thank you, Rod, N5HV w5hvv@aeneas.net From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 21 15:37:31 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id PAA02544 for ; Sun, 21 Jun 1998 15:37:30 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id PAA12118 for ; Sun, 21 Jun 1998 15:38:40 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA04819 for glowbugs-outgoing; Sun, 21 Jun 1998 12:18:20 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from main.aeneas.net (root@main.aeneas.net [207.203.176.23]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id MAA04814 for ; Sun, 21 Jun 1998 12:18:17 -0700 (PDT) Received: from [207.203.177.24] (pmj309.aeneas.net [207.203.177.24]) by main.aeneas.net (8.6.12/8.6.9) with SMTP id OAA31451; Sun, 21 Jun 1998 14:20:59 -0500 X-Sender: w5hvv@mail.aeneas.net Message-Id: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Sun, 21 Jun 1998 14:18:20 +0600 To: BOATANCHORS@listserv.tempe.gov, glowbugs@piobaire.mines.uidaho.edu, collins@qth.net, forsale-swap@qth.net, baswaplist@foothill.net From: w5hvv@aeneas.net (Roderick M. Fitz-Randolph) Subject: GB> 32V3 Final Tank Coil Assembly Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Does anyone have a 32V3 parts unit? If so, I am interested in obtaining the final coil and capacitor assembly to include both the Pi section and the L section of the Pi-L assembly. Also, interested in obtaining the T201 driver transformer for the modulation stage. Does anyone have the coil information on the 32V3? Size of L401 (diameter and turns per inch; total turns, taps) and the same information on the L404 Pi-L coil? I want build an AM/CW rig using a 4D32 in the final. I need the information for that rig. Thank you, Rod, N5HV w5hvv@aeneas.net From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 21 19:40:02 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id TAA02668 for ; Sun, 21 Jun 1998 19:40:02 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id TAA03806 for ; Sun, 21 Jun 1998 19:41:14 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id QAA05750 for glowbugs-outgoing; Sun, 21 Jun 1998 16:15:35 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mailmx.micron.net (mailmx.micron.net [198.60.253.39]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id QAA05745 for ; Sun, 21 Jun 1998 16:15:32 -0700 (PDT) Received: from kj7f (cboi15p35.boi.micron.net [207.70.43.36]) by mailmx.micron.net (8.8.5/8.8.5) with SMTP id RAA03346 for ; Sun, 21 Jun 1998 17:14:59 -0600 (MDT) Message-Id: <3.0.5.16.19980621171422.2a974b20@pophost.micron.net> X-Sender: kj7f@pophost.micron.net X-Mailer: QUALCOMM Windows Eudora Light Version 3.0.5 (16) Date: Sun, 21 Jun 1998 17:14:22 To: glowbugs@piobaire.mines.uidaho.edu From: Terry Dobler Subject: Re: GB> New acquisition... In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Ken, One of my memories of growing up in Moscow was listening to the Carillon play "Here we have Idaho" each night at 10 PM. Its nice to know that they are upgrading it and I look forward to hearing those tubes making "music" on 80 meters next winter. Terry KJ7F At 09:44 AM 6/21/98 -0700, you wrote: >Well, the good old U. of I. just upgraded their Carillon sound system, so >guess who got the old one? Myself! kj7f@micron.net (Boise, Idaho) http://netnow.micron.net/~kj7f From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 21 20:19:22 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id UAA02690 for ; Sun, 21 Jun 1998 20:19:22 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id UAA03493 for ; Sun, 21 Jun 1998 20:20:35 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id QAA05974 for glowbugs-outgoing; Sun, 21 Jun 1998 16:36:06 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.iaxs.net (root@alyssa.iaxs.net [205.164.100.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id QAA05969 for ; Sun, 21 Jun 1998 16:36:03 -0700 (PDT) Received: from citrus.iaxs.net (bill@citrus.iaxs.net [206.43.66.3]) by mail.iaxs.net (8.8.8/iaxs-19971103) with ESMTP id SAA26025; Sun, 21 Jun 1998 18:35:17 -0500 (CDT) Received: (from bill@localhost) by citrus.iaxs.net (8.8.8/iaxs-citrus-19971103) id SAA13557; Sun, 21 Jun 1998 18:35:15 -0500 (CDT) Date: Sun, 21 Jun 1998 18:35:15 -0500 (CDT) From: Bill Hawkins Message-Id: <199806212335.SAA13557@citrus.iaxs.net> To: glowbugs@piobaire.mines.uidaho.edu, keng@uidaho.edu Subject: Re: GB> New acquisition... Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Well, the "transmission line" for audio distribution amps is usually rated at 70.7 Volts AC. Negative feedback in the amp holds the voltage over a wide power range. The amp is optimizzed to deliver maximum power at 70 volts. The loads (speakers) are coupled to the line by a transformer with a 70 volt primary and a secondary tapped for different watts into 8 ohms. Wonder what the bass response of a carillon system goes down to ... What'd they do with the speakers? Regards, Bill Hawkins From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 21 20:40:48 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id UAA02706 for ; Sun, 21 Jun 1998 20:40:47 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id UAA05748 for ; Sun, 21 Jun 1998 20:42:00 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id RAA06223 for glowbugs-outgoing; Sun, 21 Jun 1998 17:07:10 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from dewdrop2.mindspring.com (dewdrop2.mindspring.com [207.69.200.82]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id RAA06218 for ; Sun, 21 Jun 1998 17:07:07 -0700 (PDT) Received: from default (user-38lcb7k.dialup.mindspring.com [209.86.44.244]) by dewdrop2.mindspring.com (8.8.5/8.8.5) with SMTP id UAA08249 for ; Sun, 21 Jun 1998 20:06:33 -0400 (EDT) Message-Id: <3.0.1.32.19980621200528.006a1638@pop.mindspring.com> X-Sender: k4oah@pop.mindspring.com X-Mailer: Windows Eudora Light Version 3.0.1 (32) Date: Sun, 21 Jun 1998 20:05:28 -0400 To: glowbugs@piobaire.mines.uidaho.edu From: Garey Barrell Subject: GB> Headphone repair? Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I need to tap the collective wisdom of the group. I have several pairs of Trimm 'phones. While they all work, there is miscellaneous crud / rust / ? on the diaphragms. Each set has the same problem. One cap comes off fine. One cap resists all efforts at removal !! While I "think" I could get the unremovable caps off with some combination of Channel-Locks, bench vise and / or pipe wrenches, I suspect there is a safer way!! At least one less likely to result in total destruction.. First thought was EO's Handbook HB-1 "Headphones: Operation and Repair." All manner of excellent advice re: History, Ears, Diaphragm, Impedances, coil rewinding, remagnetization, etc., etc ., nary a word about how to get the #$@$@#* caps off!! Of course the Handbook was written in 1948, and then the caps had only been on for 20-30 years, not 50-80 years.... Might have something to do with the problem. So... Freeze 'em? Heat Gun 'em? Soak "em in motor oil? De-Oxit? (Well, it fixes everything else!) Or just forget about it and use/enjoy them until they croak??? Any and all suggestions / ideas greatly appreciated! 73, Garey - K4OAH k4oah@mindspring.com Atlanta From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 22 00:37:51 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id AAA02822 for ; Mon, 22 Jun 1998 00:37:51 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id AAA14931 for ; Mon, 22 Jun 1998 00:39:07 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id VAA07147 for glowbugs-outgoing; Sun, 21 Jun 1998 21:15:00 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id VAA07140; Sun, 21 Jun 1998 21:14:56 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Sun, 21 Jun 1998 21:14:55 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: Bill Hawkins cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> New acquisition... In-Reply-To: <199806212335.SAA13557@citrus.iaxs.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > Well, the "transmission line" for audio distribution amps is usually > rated at 70.7 Volts AC. Negative feedback in the amp holds the voltage > over a wide power range. The amp is optimizzed to deliver maximum > power at 70 volts. The loads (speakers) are coupled to the line by > a transformer with a 70 volt primary and a secondary tapped for > different watts into 8 ohms. > > Wonder what the bass response of a carillon system goes down to ... > > What'd they do with the speakers? That is what I would like to know. I think they are still up there connected to ANOTHER system. BTW, this is a Schulmerick Carillon. Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 22 11:54:58 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id LAA03259 for ; Mon, 22 Jun 1998 11:54:57 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id LAA21994 for ; Mon, 22 Jun 1998 11:56:18 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA11695 for glowbugs-outgoing; Mon, 22 Jun 1998 08:10:00 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from hotmail.com (f156.hotmail.com [207.82.251.35]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id IAA11690 for ; Mon, 22 Jun 1998 08:09:56 -0700 (PDT) Received: (qmail 27887 invoked by uid 0); 22 Jun 1998 15:09:12 -0000 Message-ID: <19980622150912.27886.qmail@hotmail.com> Received: from 147.49.3.25 by www.hotmail.com with HTTP; Mon, 22 Jun 1998 08:09:11 PDT X-Originating-IP: [147.49.3.25] From: "Brad Hernlem" To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Ion Propulsion - GB Technology? Content-Type: text/plain Date: Mon, 22 Jun 1998 08:09:11 PDT Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO The other day I was scanning through an article about an upcoming NASA spacecraft which will be powered by ion propulsion. This sounds like GB technology except that it uses the vacuum of outerspace and the universe as one giant "tube". The description suggested that a coated tungsten filament is used to produce electrons which are accelerated through a magnetic field (to produce a long, spiral trajectory). Small amounts of Xenon gas are released into the path of the electrons which smash off electrons from the Xenon atoms producing positively charged ions. These ions are further accelerated and then ejected out the "engine" to provide thrust (albeit very miniscule). Another reason not to forget "old" technology. Brad ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 22 13:40:28 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id NAA03347 for ; Mon, 22 Jun 1998 13:40:27 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id NAA30850 for ; Mon, 22 Jun 1998 13:41:52 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA13303 for glowbugs-outgoing; Mon, 22 Jun 1998 09:54:44 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from atl.org ([199.184.215.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA13298 for ; Mon, 22 Jun 1998 09:54:39 -0700 (PDT) Received: from office (office.atl.org [199.184.215.100]) by atl.org (8.8.0/8.8.0) with SMTP id MAA10006; Mon, 22 Jun 1998 12:26:53 -0400 (EDT) Message-ID: <358D9D48.4BC3@atl.org> Date: Mon, 22 Jun 1998 00:54:48 +0100 From: BOB DUCKWORTH Reply-To: bob@atl.org Organization: Atlanta Technology Library and Museum X-Mailer: Mozilla 3.01Gold (WinNT; I) MIME-Version: 1.0 To: Brad Hernlem CC: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Ion Propulsion - GB Technology? References: <19980622150912.27886.qmail@hotmail.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Ion propulsion is not new concept. It has been proposed since at least mid 50's. Is NASA actually building something or recycling promotional material :-) Why the Xenon? Why not just throw the electrons ala Tom Swift and his Atomic-Ionic Leaf Blower powered Skate Board. -bob From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 22 14:16:04 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id OAA03377 for ; Mon, 22 Jun 1998 14:16:04 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id OAA06721 for ; Mon, 22 Jun 1998 14:17:29 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA13653 for glowbugs-outgoing; Mon, 22 Jun 1998 10:11:32 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from hotmail.com (f108.hotmail.com [207.82.250.227]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id KAA13645 for ; Mon, 22 Jun 1998 10:11:18 -0700 (PDT) Received: (qmail 11510 invoked by uid 0); 22 Jun 1998 17:10:25 -0000 Message-ID: <19980622171025.11509.qmail@hotmail.com> Received: from 147.49.3.25 by www.hotmail.com with HTTP; Mon, 22 Jun 1998 10:10:25 PDT X-Originating-IP: [147.49.3.25] From: "Brad Hernlem" To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Re: GB- Ion Propulsion - GB Technology? Content-Type: text/plain Date: Mon, 22 Jun 1998 10:10:25 PDT Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO >Ion propulsion is not new concept. It has been proposed since at least >mid 50's. Is NASA actually building something or recycling promotional >material :-) > One of the missions using ion propulsion is called "Deep Space 1": http://nmp.jpl.nasa.gov/ds1/ I supposed that this was not a "new" concept but it seems that this will be the first time actually used (if I am not mistaken). >Why the Xenon? Why not just throw the electrons ala Tom Swift and his >Atomic-Ionic Leaf Blower powered Skate Board. Because Xenon atoms have 2.5e5 times as much mass as electrons they can provide much more exchange of momentum or thrust. It would take a lot more current to generate the equivalent thrust from electrons. The part that is not entirely clear to me is how the ions are accelerated without interfering with the electrons. Brad >-bob > ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 22 16:56:50 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id QAA03487 for ; Mon, 22 Jun 1998 16:56:49 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id QAA01890 for ; Mon, 22 Jun 1998 16:58:17 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id NAA17739 for glowbugs-outgoing; Mon, 22 Jun 1998 13:28:33 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.hits.net (mail.hits.net [206.127.244.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id NAA17734 for ; Mon, 22 Jun 1998 13:28:25 -0700 (PDT) Received: from 206.127.244.97 (excalibur31.hits.net [206.127.244.97]) by mail.hits.net (8.8.8/8.8.5) with SMTP id KAA21075; Mon, 22 Jun 1998 10:28:00 -1000 (HST) Message-ID: <358EBD69.C1A@hits.net> Date: Mon, 22 Jun 1998 10:24:09 -1000 From: Peter Demmer Reply-To: ampruss@hits.net Organization: AMPRUSS Co. X-Mailer: Mozilla 3.01 (Macintosh; I; 68K) MIME-Version: 1.0 To: Brad Hernlem CC: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Ion Propulsion - GB Technology? References: <19980622150912.27886.qmail@hotmail.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Brad Hernlem wrote: > > The other day I was scanning through an article about an upcoming NASA > spacecraft which will be powered by ion propulsion. This sounds like GB > technology except that it uses the vacuum of outerspace and the universe > as one giant "tube". The description suggested that a coated tungsten > filament is used to produce electrons which are accelerated through a > magnetic field (to produce a long, spiral trajectory). Small amounts of > Xenon gas are released into the path of the electrons which smash off > electrons from the Xenon atoms producing positively charged ions. These > ions are further accelerated and then ejected out the "engine" to > provide thrust (albeit very miniscule). > > Another reason not to forget "old" technology. > > Brad Peter wrote; No problem Brad. Even though it sounds like shades of Brad Hienlen's SF stuff, The electrostatic repulsion of the classical foil flapings in a Layden jar from my youth, still works. "Nothing new under the sun, just new found applications", (quoted from an author unknown). Have a good FD 98, Aloha, Peter, KH6CTQ From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 22 20:25:56 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id UAA03592 for ; Mon, 22 Jun 1998 20:25:55 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id UAA19360 for ; Mon, 22 Jun 1998 20:27:25 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id QAA20375 for glowbugs-outgoing; Mon, 22 Jun 1998 16:58:23 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from ms1.nwla.com (root@[207.22.207.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id QAA20370 for ; Mon, 22 Jun 1998 16:58:20 -0700 (PDT) From: w5sum@ms1.nwla.com Received: from w5sum.nwla.com (ppp17.nwla.com [207.22.207.31]) by ms1.nwla.com (8.7.5/8.7.3) with SMTP id SAA07594; Mon, 22 Jun 1998 18:57:33 -0500 Message-Id: <199806222357.SAA07594@ms1.nwla.com> To: boatanchors@theporch.com, glowbugs@piobaire.mines.uidaho.edu, baswaplist@foothill.net Date: Mon, 22 Jun 1998 19:03:02 +0000 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: GB> VRC cables Priority: normal Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO was tooling down the highway today on my way to work and I spies up ahead, a large tent, like a 3 ring circus tent. I says to I, "what can this be" then I sees the sign "military surplus" after making a panic turnaround which was unappreciated by the other folks behind me, I landed in the parking lot in a cloud of dust didn't really have the stuff I was interested in but they did have a box about 3 foot square FULL of cable all marked "cx ****/VRC all began with CX then p/n's and /VRC. So, If there are cables for the VRC series radios anyone is looking for, send the numbers to me and I'll go back and see if they had them. I can tell you now there are none of the short "dogbones" that hooked the transmitter and recivers together. there is also a box full of military headsets, microphones, and antenna's rolled in canvas bags. If anyone is interested in some of this stuff let me know as they are give away prices. Ronnie W5SUM - Ronnie Hull PO Box 8941 Shreveport, La 71148 From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 22 20:34:35 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id UAA03600 for ; Mon, 22 Jun 1998 20:34:34 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id UAA26015 for ; Mon, 22 Jun 1998 20:36:05 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id RAA20542 for glowbugs-outgoing; Mon, 22 Jun 1998 17:07:41 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.xmission.com (mail.xmission.com [198.60.22.22]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id RAA20537 for ; Mon, 22 Jun 1998 17:07:38 -0700 (PDT) Received: from slc328h.modem.xmission.com (xmission.com) [166.70.2.74] by mail.xmission.com with esmtp (Exim 1.82 #2) id 0yoGc3-0003KV-00; Mon, 22 Jun 1998 18:07:04 -0600 Message-ID: <358E9D6D.9508D2EB@xmission.com> Date: Mon, 22 Jun 1998 18:07:44 +0000 From: Dexter Francis Reply-To: cwest@xmission.com Organization: CWest Tube Sales X-Mailer: Mozilla 4.05 (Macintosh; I; PPC) MIME-Version: 1.0 To: Old Tube Radios , glowbugs@piobaire.mines.uidaho.edu Subject: GB> Two more projects... References: <199806222035.PAA09618@sco.theporch.com> Content-Type: text/plain; charset=us-ascii; x-mac-type="54455854"; x-mac-creator="4D4F5353" Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Greetings all - I've added a couple more projects to the Web Page. This time it's the "16 Watt Rock Crusher" (no transformer!) and the "Midget 50 watter" (not much bigger than a QSL card) These are big files. I can put just the schematics up, if anyone is getting binary indigestion from the large files. Keep 'em cooking! -df *** CWest - P.O. Box 22443 Salt Lake City, Utah 84122 *** Visit our Web Page @ http://www.xmission.com/~cwest From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 22 23:14:04 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id XAA03684 for ; Mon, 22 Jun 1998 23:14:03 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id XAA20475 for ; Mon, 22 Jun 1998 23:15:36 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id TAA22113 for glowbugs-outgoing; Mon, 22 Jun 1998 19:55:37 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from fh102.infi.net (fh102.infi.net [208.131.160.101]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id TAA22108 for ; Mon, 22 Jun 1998 19:55:34 -0700 (PDT) Received: from dlhough (pm4-177.vegas.infi.net [206.97.53.177]) by fh102.infi.net (8.8.8/8.8.8) with SMTP id WAA28772; Mon, 22 Jun 1998 22:54:47 -0400 (EDT) Message-ID: <358F18EE.1845@mailhost.vegas.infi.net> Date: Mon, 22 Jun 1998 19:54:38 -0700 From: Dave Reply-To: dlhough@mh102.infi.net X-Mailer: Mozilla 3.0 (Win95; U) MIME-Version: 1.0 To: bob@atl.org CC: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Ion Propulsion - GB Technology? References: <19980622150912.27886.qmail@hotmail.com> <358D9D48.4BC3@atl.org> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO BOB DUCKWORTH wrote: > > Ion propulsion is not new concept. It has been proposed since at least > mid 50's. Is NASA actually building something or recycling promotional > material :-) > > Why the Xenon? Why not just throw the electrons ala Tom Swift and his > Atomic-Ionic Leaf Blower powered Skate Board. > > -bob Before this becomes viable for interstellar travel all those old tube testors that were once in drug stores, dime stores, etc. will have to be found, restores and positioned in the space lanes so if the 5U4GB that is powering your craft becomes suspect you can stop off and get it tested and possibly replaced. 73 from the Land of Area 51, Dave Hough, KC7DM Las Vegas From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 23 07:33:42 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id HAA03935 for ; Tue, 23 Jun 1998 07:33:42 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id HAA12626 for ; Tue, 23 Jun 1998 07:35:20 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id EAA26429 for glowbugs-outgoing; Tue, 23 Jun 1998 04:13:16 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from ms1.nwla.com (root@[207.22.207.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id EAA26424 for ; Tue, 23 Jun 1998 04:13:13 -0700 (PDT) From: w5sum@ms1.nwla.com Received: from w5sum.nwla.com (ppp16.nwla.com [207.22.207.30]) by ms1.nwla.com (8.7.5/8.7.3) with SMTP id GAA09633; Tue, 23 Jun 1998 06:13:03 -0500 Message-Id: <199806231113.GAA09633@ms1.nwla.com> To: baswaplist@foothill.net, glowbugs@piobaire.mines.uidaho.edu Date: Tue, 23 Jun 1998 06:18:36 +0000 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: GB> VRC Cables Priority: normal Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO men, I am SWAMPED with requests for cables/headsets/mics/antennas tell ya what I will do. I'll go by there today and m ake notes of the p/n's for all this stuff. I'll try to get prices. I'll post tonite. If any of you need this stuff I'll make arrangements to get it for ya. Ronnie W5SUM - Ronnie Hull PO Box 8941 Shreveport, La 71148 From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 23 09:46:47 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id JAA04003 for ; Tue, 23 Jun 1998 09:46:47 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id JAA10228 for ; Tue, 23 Jun 1998 09:48:27 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id GAA27168 for glowbugs-outgoing; Tue, 23 Jun 1998 06:28:13 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail2.premierhost.net ([209.64.240.5]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id GAA27163 for ; Tue, 23 Jun 1998 06:28:09 -0700 (PDT) Received: from w1ux ([204.60.201.83]) by mail2.premierhost.net (Post.Office MTA v3.1.2 release (PO205-101c) ID# 0-45429U2000L200S0) with SMTP id AAA130; Tue, 23 Jun 1998 09:27:57 -0400 Reply-To: From: "y.a.feder W1UX" To: , Cc: Subject: RE: GB> Ion Propulsion - GB Technology? Date: Tue, 23 Jun 1998 06:27:56 -0700 Message-ID: <000001bd9eaa$bbbd0d80$53c93ccc@w1ux> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0 X-MimeOLE: Produced By Microsoft MimeOLE V4.72.2106.4 In-Reply-To: <358F18EE.1845@mailhost.vegas.infi.net> Importance: Normal Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO BOB DUCKWORTH wrote: > > Ion propulsion is not new concept. It has been proposed since at least > mid 50's. Is NASA actually building something or recycling promotional > material :-) > > Why the Xenon? Why not just throw the electrons ala Tom Swift and his > Atomic-Ionic Leaf Blower powered Skate Board. > > -bob Before this becomes viable for interstellar travel all those old tube testors that were once in drug stores, dime stores, etc. will have to be found, restores and positioned in the space lanes so if the 5U4GB that is powering your craft becomes suspect you can stop off and get it tested and possibly replaced. 73 from the Land of Area 51, Dave Hough, KC7DM Las Vegas Come on Dave, for the outer lanes (at least those beyond Jupiter) we'll need at least the TV7's and the Hickoks for reliale results. Besides the really long haul craft are using 5R4GBY's, and the military patrol vessels use 3B28's! You just can't get the mass particle acceleration necessary out of 5U4's. 73 Al W1UX Yves A. (Al "Al") Feder W1UX The Home of "Tiny Radio Theater"(r) and "Sound CartOOns" (r) http://www.geocities.com/paris/1769/boatanchor01.html w1ux@tinyradio.com From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 23 12:18:11 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id MAA04105 for ; Tue, 23 Jun 1998 12:18:10 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id MAA24942 for ; Tue, 23 Jun 1998 12:19:51 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA29611 for glowbugs-outgoing; Tue, 23 Jun 1998 08:54:21 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.iaxs.net (root@alyssa.iaxs.net [205.164.100.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id IAA29603 for ; Tue, 23 Jun 1998 08:54:13 -0700 (PDT) Received: from citrus.iaxs.net (bill@citrus.iaxs.net [206.43.66.3]) by mail.iaxs.net (8.8.8/iaxs-19971103) with ESMTP id KAA17150; Tue, 23 Jun 1998 10:53:41 -0500 (CDT) Received: (from bill@localhost) by citrus.iaxs.net (8.8.8/iaxs-citrus-19971103) id KAA17830; Tue, 23 Jun 1998 10:53:37 -0500 (CDT) Date: Tue, 23 Jun 1998 10:53:37 -0500 (CDT) From: Bill Hawkins Message-Id: <199806231553.KAA17830@citrus.iaxs.net> To: glowbugs@piobaire.mines.uidaho.edu, r-390@qth.net Subject: GB> Liberty ship cruise from Baltimore Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO The Liberty ship John W. Brown, with its triple expansion piston steam engine, will have a day cruise in the Baltimore, MD area on July 18. Opens for breakfast at 8AM, leaves the dock at 9:59AM, and returns about 4PM. Features wartime aircraft flybys and a mock gunbattle with aircraft and the ship's Oerlikons and 3 inchers. The blurb says, "Spend a day in 1943." All that and a buffet lunch for 700, for only $100 each. The radio room is correct for WW2, with a second set for HF. Call 'em at 410 661-1550. Tell the volunteer that you're interested in the radio room. I believe it is operational. Regards Bill Hawkins From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 23 12:19:10 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id MAA04110 for ; Tue, 23 Jun 1998 12:19:10 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id MAA06960 for ; Tue, 23 Jun 1998 12:20:52 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA29499 for glowbugs-outgoing; Tue, 23 Jun 1998 08:47:43 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id IAA29490 for ; Tue, 23 Jun 1998 08:47:41 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Tue, 23 Jun 1998 08:47:30 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Chip Owens - NW0O Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I have lost your e-mail address. Please contact me. Thanks. Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 23 12:30:42 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id MAA04121 for ; Tue, 23 Jun 1998 12:30:42 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id MAA12292 for ; Tue, 23 Jun 1998 12:32:23 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA29774 for glowbugs-outgoing; Tue, 23 Jun 1998 09:03:22 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from smtp04.primenet.com (daemon@smtp04.primenet.com [206.165.6.134]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA29768 for ; Tue, 23 Jun 1998 09:03:19 -0700 (PDT) Received: (from daemon@localhost) by smtp04.primenet.com (8.8.8/8.8.8) id JAA11125; Tue, 23 Jun 1998 09:02:59 -0700 (MST) Received: from usr07.primenet.com(206.165.6.207) via SMTP by smtp04.primenet.com, id smtpd011085; Tue Jun 23 09:02:53 1998 Date: Tue, 23 Jun 1998 09:02:50 -0700 (MST) From: Chris Trask To: Bill Hawkins cc: glowbugs@piobaire.mines.uidaho.edu, r-390@qth.net Subject: Re: GB> Liberty ship cruise from Baltimore In-Reply-To: <199806231553.KAA17830@citrus.iaxs.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On Tue, 23 Jun 1998, Bill Hawkins wrote: > The Liberty ship John W. Brown, with its triple expansion piston steam > engine, will have a day cruise in the Baltimore, MD area on July 18. > Opens for breakfast at 8AM, leaves the dock at 9:59AM, and returns > about 4PM. Features wartime aircraft flybys and a mock gunbattle with > aircraft and the ship's Oerlikons and 3 inchers. The blurb says, "Spend > a day in 1943." All that and a buffet lunch for 700, for only $100 each. > The radio room is correct for WW2, with a second set for HF. Call 'em > at 410 661-1550. Tell the volunteer that you're interested in the radio > room. I believe it is operational. > > Regards > Bill Hawkins > Damn!!! I was just there 2 weeks ago for MTT-S. Trouble is, I would spend all of my time down below in the engine room. Glad to see that the Brown was finally made sea-worthy. Now we have two of these grand ships. Exactly how many rivets did they end up replacing? ,----------------------. Circuit Design for the / What's all this \ RF Impaired / extinct stuff, anyhow? / \ _______,--------------' Chris Trask / N7ZWY _ |/ Principal Engineer oo\ ATG Design Services (__)\ _ P.O. Box 25240 \ \ .' `. Tempe, Arizona 85285-5240 \ \ / \ \ '" \ Technical Editor, . ( ) \ QRP Quarterly '-| )__| :. \ QRP ARCI 9464 | | | | \ '. c__; c__; '-..'>.__ Email: ctrask@primenet.com http://www.primenet.com/~ctrask Graphics by Loek Frederiks From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 23 13:26:53 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id NAA04167 for ; Tue, 23 Jun 1998 13:26:52 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id NAA08404 for ; Tue, 23 Jun 1998 13:28:34 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA00762 for glowbugs-outgoing; Tue, 23 Jun 1998 09:53:32 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id JAA00757 for ; Tue, 23 Jun 1998 09:53:30 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Tue, 23 Jun 1998 09:53:30 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Coils... Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Does anyone know if either Millen parts or B & W coils and sockets are still available somewhere? I find many circuits I would like to build which use B & W plug-in coils, for instance. Of course it is possible to make other coils which would be suitable, but the B & W coils lend a certain authenticity to the equipment. Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 23 19:07:02 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id TAA04372 for ; Tue, 23 Jun 1998 19:07:02 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id TAA01007 for ; Tue, 23 Jun 1998 19:08:46 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id PAA04544 for glowbugs-outgoing; Tue, 23 Jun 1998 15:31:26 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.iaxs.net (root@alyssa.iaxs.net [205.164.100.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id PAA04539 for ; Tue, 23 Jun 1998 15:31:20 -0700 (PDT) Received: from citrus.iaxs.net (bill@citrus.iaxs.net [206.43.66.3]) by mail.iaxs.net (8.8.8/iaxs-19971103) with ESMTP id RAA12736 for ; Tue, 23 Jun 1998 17:30:49 -0500 (CDT) Received: (from bill@localhost) by citrus.iaxs.net (8.8.8/iaxs-citrus-19971103) id RAA18800 for glowbugs@piobaire.mines.uidaho.edu; Tue, 23 Jun 1998 17:30:47 -0500 (CDT) Date: Tue, 23 Jun 1998 17:30:47 -0500 (CDT) From: Bill Hawkins Message-Id: <199806232230.RAA18800@citrus.iaxs.net> To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> So that's what regen does! Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Breadboarded the 60 KHz TRF receiver on a BC-453 chassis, using its IF transformers. These are resonated to 85 KHz with 180 pf caps and 17 pf trimmers. I added another 180 pf to get them down to 60 KHz, but I'm going to need external trimmers. One of the coils in a can is movable, to adjust IF bandwidth. All the way out and you get a single peak, all the way in and the peaks are 4.5 KHz apart. Since I'm looking for the narrowest possible bandpass, they are all the way out. Used a 6SK7 for the first RF amp and a 6J5 as a cathode follower for measurements. Started with one IF can and took measurements. Added a second by tying the common and tap of one can to the common and tap of the second. Since the tap is at about 25% of the coil, I didn't try additional isolation. Got those measurements, then added the third can, moving the grid of the 6J5 to the output tap of the last active can each time. The results for bandwidth at 6 db down (1/2 voltage) and 20 db (1/10) look like this: Cans -6db -20db 1 2.9 7.0 KHz 2 2.1 4.5 3 1.7 3.6 Well, I'm not gonna get rid of the 61 KHz monster signal that way. So I added a plate resistor to the 6J5 and coupled the plate back to the grid of the 6SK7 with a 4-25 pf trimmer from one of Larry Ware's cigar boxes. Couldn't get oscillation with 3 cans, so removed the last one. Backed off to about half way on the trimmer to stop oscillation. Backed off a bit more to stop reception of the 61 KHz signal, which was showing up on the meter. The result was: Cans -6db -20db 2 0.09 0.43 KHz Now that has possibilities. Time to get some trimmers to peak the cans for exactly 60 KHz, and then try it on the loop antenna. Regards, Bill Hawkins From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 23 22:08:01 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id WAA04461 for ; Tue, 23 Jun 1998 22:07:59 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id WAA16044 for ; Tue, 23 Jun 1998 22:09:48 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id SAA06574 for glowbugs-outgoing; Tue, 23 Jun 1998 18:48:14 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from smtp1.mailsrvcs.net (smtp1.gte.net [207.115.153.30]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id SAA06569 for ; Tue, 23 Jun 1998 18:48:11 -0700 (PDT) Received: from stefanbi (1Cust229.tnt1.redmond.wa.da.uu.net [153.37.198.229]) by smtp1.mailsrvcs.net with SMTP id UAA02334; Tue, 23 Jun 1998 20:40:45 -0500 (CDT) Message-Id: <3.0.5.32.19980623184044.008004f0@mail.gte.net> X-Sender: stefan00@mail.gte.net X-Mailer: QUALCOMM Windows Eudora Pro Version 3.0.5 (32) Date: Tue, 23 Jun 1998 18:40:44 -0700 To: tesla@pupman.com, glowbugs@piobaire.mines.uidaho.edu From: Stefan Bishay Subject: GB> Variac Repair Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I obtained two variacs today at the local electrical utility at the low rate of 10 cents a pound. One is a Stanco, about 7" diameter, 3" high, with the usual connections. It is not marked except for manufacturer and 583-0013 on the bottom of the rotor assembly and 164-0090 on the piece of polyethylene that the shaft attaches to. It needs a new brush assemble, can anyone help? The second one is a General Radio type V10, which also needs a new brush, marked V10. I assume I can get this from GRC, but does anyone have their number? Also the windings on this one were coated with some black compound which has mostly chipped off; should I just get rid of the rest of this and coat it with glyptal or similar? Thanks to anyone that can help, Stefan Bishay - KC7SJC Seattle, WA ICQ 2141646 From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 23 22:54:45 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id WAA04487 for ; Tue, 23 Jun 1998 22:54:44 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id WAA23695 for ; Tue, 23 Jun 1998 22:56:34 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id TAA07038 for glowbugs-outgoing; Tue, 23 Jun 1998 19:33:11 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from camel7.mindspring.com (camel7.mindspring.com [207.69.200.57]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id TAA07031 for ; Tue, 23 Jun 1998 19:33:08 -0700 (PDT) Received: from LOCALNAME (user-38ldaue.dialup.mindspring.com [209.86.171.206]) by camel7.mindspring.com (8.8.5/8.8.5) with SMTP id WAA13200 for ; Tue, 23 Jun 1998 22:32:29 -0400 (EDT) Date: Tue, 23 Jun 1998 22:32:29 -0400 (EDT) Message-Id: <1.5.4.16.19980623224233.290f030c@pop.mindspring.com> X-Sender: w4tim@pop.mindspring.com X-Mailer: Windows Eudora Light Version 1.5.4 (16) Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: glowbugs@piobaire.mines.uidaho.edu From: "Robert P. Buehlmann" Subject: GB> In need of space !! Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Ladies and Gents, Have got one each of the following VHF firebottle boxes which are surplus to my collection. Would like to see them go to someone who can use them. 1. ARC-3 Receiver and Transmitter. $35.00 each unit Both units are complete with tubes, covers but without xtals. Condx is about a 7 out of 10. Neither unit has been tested. Case has no holes or shows any sign of modifications. 2. T-23/ARC 5 $20.00 Unit is complete with all tubes. Inside is somewhat dirty but should be cleaned up easily. Top of case has some bends but no tears or holes. Condx is abt a 5 out of 10. Unit has not been tested. Shipping is additional. 73 de Tim (Robert P.) W4TIM From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jun 24 00:52:12 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id AAA04548 for ; Wed, 24 Jun 1998 00:52:10 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id AAA20983 for ; Wed, 24 Jun 1998 00:53:57 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id UAA07739 for glowbugs-outgoing; Tue, 23 Jun 1998 20:49:45 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from fh102.infi.net (fh102.infi.net [208.131.160.101]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id UAA07734 for ; Tue, 23 Jun 1998 20:49:42 -0700 (PDT) Received: from dlhough (pm1-64.vegas.infi.net [206.97.53.64]) by fh102.infi.net (8.8.8/8.8.8) with SMTP id XAA06768; Tue, 23 Jun 1998 23:48:59 -0400 (EDT) Message-ID: <3590771F.4188@mailhost.vegas.infi.net> Date: Tue, 23 Jun 1998 20:48:47 -0700 From: Dave Reply-To: dlhough@mh102.infi.net X-Mailer: Mozilla 3.0 (Win95; U) MIME-Version: 1.0 To: y.a.feder@tinyradio.com CC: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Ion Propulsion - GB Technology? References: <000001bd9eaa$bbbd0d80$53c93ccc@w1ux> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > > > > Ion propulsion is not new concept. It has been proposed since at least > > mid 50's. Is NASA actually building something or recycling promotional > > material :-) > > > > Why the Xenon? Why not just throw the electrons ala Tom Swift and his > > Atomic-Ionic Leaf Blower powered Skate Board. > > > > -bob > > Before this becomes viable for interstellar travel all those old tube > testors that were once in drug stores, dime stores, etc. will have to be > found, restores and positioned in the space lanes so if the 5U4GB that > is powering your craft becomes suspect you can stop off and get it > tested and possibly replaced. > > 73 from the Land of Area 51, > Dave Hough, KC7DM > Las Vegas > > Come on Dave, for the outer lanes (at least those beyond Jupiter) we'll need > at least the TV7's and the Hickoks for reliale results. Besides the really > long haul craft are using 5R4GBY's, and the military patrol vessels use > 3B28's! > You just can't get the mass particle acceleration necessary out of 5U4's. > > 73 Al W1UX > If you recall the alien autopsy on TV several years ago, before he died the alien passed on the secret of wiring the filaments of 5U4's in push-pull. This knowledge has been suppressed by the Trilateral Commission and the World Bank out of pure greed. They have secretly obtained first options on all those old tube testors. Remember the automobile engine that runs on seawater? Where is it today? Bought up and hidden away by General Motors and the oil companies. Some knowledge did leak out about the push-pull concept but was only applied to light aircraft and not ion engines. "The truth is out there." 73 D.H., KC7DM Las Vegas From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jun 24 01:00:35 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id BAA04558 for ; Wed, 24 Jun 1998 01:00:33 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id BAA24901 for ; Wed, 24 Jun 1998 01:02:24 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id VAA07996 for glowbugs-outgoing; Tue, 23 Jun 1998 21:38:56 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mtiwmhc01.worldnet.att.net (mtiwmhc01.worldnet.att.net [204.127.131.36]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id VAA07991 for ; Tue, 23 Jun 1998 21:38:53 -0700 (PDT) Received: from LOCALNAME ([12.65.208.140]) by mtiwmhc01.worldnet.att.net (InterMail v03.02.03 118 118 102) with SMTP id <19980624043741.EXNK14979@LOCALNAME>; Wed, 24 Jun 1998 04:37:41 +0000 X-Sender: ebjr@postoffice.worldnet.att.net X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: BASWAPLIST@FOOTHILL.NET, boatanchors@theporch.com, glowbugs@piobaire.mines.uidaho.edu From: Sandy W5TVW Subject: GB> FS/FT: Hammarlund HQ-180 Message-Id: <19980624043741.EXNK14979@LOCALNAME> Date: Wed, 24 Jun 1998 04:37:41 +0000 Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Hello Gang, I have another Hammarlund I aquired that I'm not going to repair of keep. (I'm not a Hammarlund "person"). Too many projects and too little time to do all the things I'd like to do! A move may be in the cards in this year, so gotta thin things out a little. It works weakly on the first two bands. Just IF noise on the others after it warms up for about 15-20 minutes. Top of chassis doesn't look bad. Top and rear of cabinet has some added holes. It had been oversprayed with a "copper" colored paint and labelled with dymo tape! I have a "Hy-Manuals" book for it. The knobs all appear to be original. Dial cards in very good condition. "S" meter cover has 'yellowed' from age and meter works fine. It has a clock with what appears to be home-made hands and it works! Nothing appears to be overheating. This one will require some TLC to bring it back to normal again! Would like to trade it for a restorable NC-57, NC-125, NC-270, S-76, SX-96 or SX-100 that is complete. I'm open to best offer of cash. What say ye, Hammarlund affectionados? 73, E. V. Sandy Blaize, W5TVW "Boat Anchors collected, restored, repaired, traded and used!" 417 Ridgewood Drive Metairie, LA., 70001 ***Again looking for a Hallicrafters SR-75 **** *** Looking for a TRC-10 transceiver ****** *** Looking for an RAL receiver *********** From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jun 24 05:25:53 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id FAA04699 for ; Wed, 24 Jun 1998 05:25:51 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id FAA04862 for ; Wed, 24 Jun 1998 05:27:45 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id CAA10427 for glowbugs-outgoing; Wed, 24 Jun 1998 02:09:17 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from pp.hw.ac.uk (pp@pp.hw.ac.uk [137.195.151.253]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id CAA10422 for ; Wed, 24 Jun 1998 02:09:12 -0700 (PDT) Received: from punt2.hw.ac.uk by pp.hw.ac.uk with SMTP(trusted); Wed, 24 Jun 1998 10:08:56 +0100 Received: from annexuser1.cen.hw.ac.uk (annexuser1.cen.hw.ac.uk [137.195.165.10]) by punt2.hw.ac.uk (8.8.8/8.8.8) with SMTP id KAA19156; Wed, 24 Jun 1998 10:08:43 +0100 Message-Id: <199806240908.KAA19156@punt2.hw.ac.uk> MIME-Version: 1.0 To: dlhough From: Bill Jarvis CC: "y.a.feder" , glowbugs Date: Wed, 24 Jun 1998 10:08:29 +500 X-Mailer: Net-Tamer 1.11 Subject: GB> Re: GB Ion Propulsion - GB Technology? Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On 1998-06-24 dlhough@mh102.infi.net said: CC: glowbugs@piobaire.mines.uidaho.edu > > > > Ion propulsion is not new concept. It has been proposed since >at least > mid 50's. Is NASA actually building something or >recycling promotional > material :-) > > > > Why the Xenon? Why not just throw the electrons ala Tom Swift >and his > Atomic-Ionic Leaf Blower powered Skate Board. > > > > -bob > Before this becomes viable for interstellar travel all >those old tube testors that were once in drug stores, dime stores, >etc. will have to be found, restores and positioned in the space >lanes so if the 5U4GB that is powering your craft becomes suspect >you can stop off and get it tested and possibly replaced. > 73 from the Land of Area 51, > Dave Hough, KC7DM > Las Vegas > Come on Dave, for the outer lanes (at least those beyond Jupiter) >we'll need at least the TV7's and the Hickoks for reliale results. >Besides the really long haul craft are using 5R4GBY's, and the >military patrol vessels use 3B28's! > You just can't get the mass particle acceleration necessary out of 5U4's. > > 73 Al W1UX If you recall the alien autopsy on TV several years ago, before he died the alien passed on the secret of wiring the filaments of 5U4's in push-pull. This knowledge has been suppressed by the Trilateral Commission and the World Bank out of pure greed. They have secretly obtained first options on all those old tube testors. Remember the automobile engine that runs on seawater? Where is it today? Bought up and hidden away by General Motors and the oil companies. Some knowledge did leak out about the push-pull concept but was only applied to light aircraft and not ion engines. "The truth is out there." 73 D.H., KC7DM Las Vegas You mean The World Bank want my 1930s AVO ? But I NEED it! ============ ===== ===== BILL J. ===== ===== ============ GM8APX, qthr Edinburgh, Scotland, UK In aquam prolatus est Net-Tamer V 1.11 - Registered From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jun 24 09:57:39 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id JAA04848 for ; Wed, 24 Jun 1998 09:57:39 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id JAA16974 for ; Wed, 24 Jun 1998 09:59:36 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id GAA11749 for glowbugs-outgoing; Wed, 24 Jun 1998 06:33:16 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail1.monumental.com (mail1.mnsinc.com [206.55.3.18]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id GAA11736 for ; Wed, 24 Jun 1998 06:33:06 -0700 (PDT) Received: from COMPUTER (a0025.bethesda.mns.net [206.239.105.57]) by mail1.monumental.com (8.8.8/8.8.8) with SMTP id JAA26140 for ; Wed, 24 Jun 1998 09:28:50 -0400 (EDT) Message-Id: <199806241328.JAA26140@mail1.monumental.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: glowbugs@piobaire.mines.uidaho.edu Date: Wed, 24 Jun 1998 06:28:10 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: Re: GB> 30+ paper items to sell. http://wits.atl.org Reply-to: bry@mnsinc.com Priority: normal In-reply-to: <35897BAA.7055@atl.org> X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I can heartily recommend Bob's auction, having sold 4 or 5 itmes there in June - mostly compouter items that I couldn't move out by other means. They sold at bargain prices (example - a small UPS, Uninterruptible Power Supply, that went for $11.00 !!) Perhaps this is a good, no-cost way of selling off some of those obscure unwanted BA items that are cluttering up your shacks! I heartily recommend it for both sellers AND bargain hunters. Well done Bob! Bry On 18 Jun 98 at 21:42, BOB wrote: > Have 30+ paper items to sell at > http://wits.atl.org > It's easier to keep track this way. > -bob From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jun 24 09:57:41 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id JAA04853 for ; Wed, 24 Jun 1998 09:57:41 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id JAA16198 for ; Wed, 24 Jun 1998 09:59:39 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id GAA11738 for glowbugs-outgoing; Wed, 24 Jun 1998 06:33:07 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail1.monumental.com (mail1.mnsinc.com [206.55.3.18]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id GAA11719 for ; Wed, 24 Jun 1998 06:32:59 -0700 (PDT) Received: from COMPUTER (a0025.bethesda.mns.net [206.239.105.57]) by mail1.monumental.com (8.8.8/8.8.8) with SMTP id JAA26105 for ; Wed, 24 Jun 1998 09:28:43 -0400 (EDT) Message-Id: <199806241328.JAA26105@mail1.monumental.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: glowbugs@piobaire.mines.uidaho.edu Date: Wed, 24 Jun 1998 05:41:09 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: Re: GB> New acquisition... Reply-to: bry@mnsinc.com Priority: normal In-reply-to: X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Hey Ken - instant 1998-style car SOUND SYSTEM to blow your neighbors away with! Just feed those 3B28s from a GIANT vibrator (he he!) Add a 100 amp alternator to the family auto, and a pair of nice big 5 inch speakers in the trunk and away you go! I like 805s a lot. I have never used any on the air, but came across a NIB at a UK "Jumble Sale" when I was a kid, and didn't really know what I had! Hooked the 'bright emitter" filaments up to a car battery at home and LOVED The look of them!! On 21 Jun 98 at 9:44, Ken wrote: > Well, the good old U. of I. just upgraded their Carillon sound > system, so guess who got the old one? Myself! > > Interesting item. I got a powersupply which has 2 ea 3B28s in it, a > dual-section preamp, and two amps, each containing a Push Pull pair > of 805s, AND 4 ea NIB 805s extra. Lessee....805s are good for about > 215 watts output each in Class C CW, and a pair of them running > Class B push-pull provides 350 Watts output. Wonder what I could > modulate with those? My PP 304TL Hartley? :-) (Not likely). > > Now to try to figure out what output impedance the big "modulation" > transformers are... > > Ken W7EKB > **************************************************** *** 73 from Radio AF4K/G3XLQ Gaithersburg, MD USA * ** E-mail to: bry@mnsinc.com * *** ICQ 6124470 *** ** http://www.mnsinc.com/bry/ * **************************************************** AM International #1024, TENTEN #13582. GRID FM19. Rigs: Valiant, DX-60/HG-10, FT-840, TM-261A, Harvey Wells Bandmaster, Drake 2 C. TEN-TEN #13582, DXCC #17763, Bicentennial WAS From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jun 24 10:53:57 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id KAA04910 for ; Wed, 24 Jun 1998 10:53:57 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id KAA19526 for ; Wed, 24 Jun 1998 10:55:55 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA12375 for glowbugs-outgoing; Wed, 24 Jun 1998 07:32:35 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id HAA12370 for ; Wed, 24 Jun 1998 07:32:30 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id KAA19721 for glowbugs@piobaire.mines.uidaho.edu; Wed, 24 Jun 1998 10:28:20 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806241428.KAA19721@seedlab1.cropsci.ncsu.edu> Subject: GB> GL ALL on FD 98 (with glowenbottles of course!) To: glowbugs@piobaire.mines.uidaho.edu Date: Wed, 24 Jun 1998 10:28:18 -0400 (EDT) X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Well, folks, Ol' Tube Tim/W4TIM and myself are almost ready for a FD 98 on 80M with Glowenbottle Machinen in tow. I won't be around the office here, until next tuesday, so I thought I would wish all a great FD 98 (using BA/GB gear, of course). Battens down yer antennae, fires ye up yer generatormachinen, and readys yer tin cans an' sendin' irons at the fore...... and mebbie will QSO ye on 80M CW, in the heat o' that thar FD FD FD fracas. Look for W4DW on or around 3550, and I will mebbie have the rig up Friday night for some fun, barring heat stroke, tornadoes, excess rainydaystuffs, an' Murphy's revenge (he be the FD leader this year, he be), on 3579 using my call/NA4G. Rig will be the venerable 1940's Big Bertha Radiomarine with a smokin' pair o' fiery 813's puffin' some 150 wattes de ethere output, with a 3/4 wave L and full size vertical and a maybe an extended double zepp. RX will be an R-388, with maybe an R-390. As much as I hate it, this year we will be logging on them thar dead-bugge-cpu-sillysandystateish-thingies. Hope the keying watzit can hang onto Miss Bertha's reins without blowing. Time will tell. The ol' bugge will do fine, if it can't. Last year W4DW took 7A. This year we will be running 8A, so who knows. See ye thar! An' haves ye a fine FD 98! 73/ZUT DE NA4G/Bob UP From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jun 24 11:28:01 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id LAA04934 for ; Wed, 24 Jun 1998 11:28:01 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id LAA17740 for ; Wed, 24 Jun 1998 11:29:59 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA12922 for glowbugs-outgoing; Wed, 24 Jun 1998 08:01:12 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from inetgw.guidant.com (inetgw.guidant.com [132.189.76.3]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id IAA12916 for ; Wed, 24 Jun 1998 08:01:04 -0700 (PDT) Received: from inetgw.guidant.com (root@localhost) by inetgw.guidant.com with ESMTP id KAA27524 for ; Wed, 24 Jun 1998 10:00:51 -0500 (CDT) Received: from stpmsx01.stp.guidant.com (stpmsx01.stp.guidant.com [132.189.8.30]) by inetgw.guidant.com with ESMTP id KAA27520 for ; Wed, 24 Jun 1998 10:00:50 -0500 (CDT) Received: by stpmsx01.stp.guidant.com with Internet Mail Service (5.0.1458.49) id ; Wed, 24 Jun 1998 10:00:52 -0500 Message-ID: <21B46CBD022AD1118F0500805F15A06884A090@STPMSX05.stp.guidant.com> From: "Freeberg, Scott (STP)" To: "'glowbugs'" Subject: GB> Regen Receiver Working Date: Wed, 24 Jun 1998 10:00:47 -0500 X-Priority: 3 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.0.1458.49) Content-Type: text/plain Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Hi guys, I finally got off my butt and started building my Cakepanion two tube regen kit my wife got me for Xmas. For that "surprise" gift, I wrote out the order, filled out the envelope with return address and stamp, filled out the check but left the signature blank, and left it on the counter. On XMAS morning I was so surprised! How did she know??? :-) Anyway, I finished building it last night and fired it up. It works! I was not able to copy any 40 meter cw though, I couldn't get the radio to tune down that far. Got as far as the SSB portion of the band, and it sounded pretty darn good for two tubes. So I need to spend some time with it yet to get it going on cw. I may need (!) to add an audio filter depending on what it sounds like. I suspect it will be wide. I have crystals on order from Phoenix and then I will have this regen receiver and my Ameco AC-1 on 7040. I know that is where the qrp'er hang out. Where do the glowbuggers hang out on 40 meters? I want to wind a 30 meter coil for the transmitter and receiver and try for some DX on 30 meters! 5 Watts out should work the world. 73, Scott WA9WFA Saint Paul Minn From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jun 24 15:11:25 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id PAA05076 for ; Wed, 24 Jun 1998 15:11:25 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id PAA05938 for ; Wed, 24 Jun 1998 15:13:25 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id LAA15701 for glowbugs-outgoing; Wed, 24 Jun 1998 11:42:23 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from atl.org ([199.184.215.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id LAA15694 for ; Wed, 24 Jun 1998 11:42:16 -0700 (PDT) Received: from office (office.atl.org [199.184.215.100]) by atl.org (8.8.0/8.8.0) with SMTP id OAA14303 for ; Wed, 24 Jun 1998 14:14:25 -0400 (EDT) Message-ID: <35905995.2D5C@atl.org> Date: Wed, 24 Jun 1998 02:42:45 +0100 From: BOB DUCKWORTH Reply-To: bob@atl.org Organization: Atlanta Technology Library and Museum X-Mailer: Mozilla 3.01Gold (WinNT; I) MIME-Version: 1.0 To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Some useful gb parts at http://wits.atl.org Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO found a couple O bits of miniductor and a small 7Hy choke (NOS) and stuck them on auction page along with some additional ephemera Was looking through some of the old paper and: >From the 1941 edition of ARRLs "How to Become a Radio Amateur" The construction of the receiver should be started as soon as one begins to learn the code. Building the receiver gives one a familiarity with radio parts and construction, and the finished product will enable the operator to boost his code speed by listening to short-wave amateur and commercial stations. Following is, "Construction of the wood/metal receiver", which is a 2tube, 5band, regen 6J7/1N5GT, 6C5/1A5 built on a wood chassis with a metal panel. There are also details of a 6V6 TX in both wooden and metal versions. While the virtues of improvization receive credit, selling parts is clearly part of the agenda. The beginner will do well to abide by the layout and choice of parts recommended by the editors. :-) -bob wb4mnf From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jun 24 17:30:21 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id RAA05169 for ; Wed, 24 Jun 1998 17:30:21 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id RAA16881 for ; Wed, 24 Jun 1998 17:32:24 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id NAA16893 for glowbugs-outgoing; Wed, 24 Jun 1998 13:55:55 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id NAA16886; Wed, 24 Jun 1998 13:55:48 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Wed, 24 Jun 1998 13:55:48 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: "Freeberg, Scott (STP)" cc: "'glowbugs'" Subject: Re: GB> Regen Receiver Working In-Reply-To: <21B46CBD022AD1118F0500805F15A06884A090@STPMSX05.stp.guidant.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > I finally got off my butt and started building my Cakepanion two tube > regen kit my wife got me for Xmas. For that "surprise" gift, I wrote > out the order, filled out the envelope with return address and stamp, > filled out the check but left the signature blank, and left it on the > counter. On XMAS morning I was so surprised! How did she know??? > :-) Neato! Well done! > > Anyway, I finished building it last night and fired it up. It works! I > was not able to copy any 40 meter cw though, I couldn't get the radio to > tune down that far. Got as far as the SSB portion of the band, and it > sounded pretty darn good for two tubes. So I need to spend some time > with it yet to get it going on cw. More capacitance in the band-set cap or a turn or two more on the 40 meter coil. > > I may need (!) to add an audio filter depending on what it sounds like. > I suspect it will be wide. If you use VERY little antenna coupling (2 pf or so), change the grid coupling cap to about 10 or 15 pf, and the grid-leak to about 15 megohm, your selectivity will cut the sidebands off SSB sigs. > > I have crystals on order from Phoenix and then I will have this regen > receiver and my Ameco AC-1 on 7040. I know that is where the qrp'er > hang out. Where do the glowbuggers hang out on 40 meters? Two places: 7050 when it isn't socked in by QRM, and (lately) 7118 although we listen up as high as 7125 or so. > > I want to wind a 30 meter coil for the transmitter and receiver and try > for some DX on 30 meters! 5 Watts out should work the world. Good idea!!!! I could put the GRC-109 on 30 meters if we could agree on a frequency near the low end of 30. Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jun 24 19:37:59 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id TAA05232 for ; Wed, 24 Jun 1998 19:37:59 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id TAA30021 for ; Wed, 24 Jun 1998 19:40:03 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id QAA18205 for glowbugs-outgoing; Wed, 24 Jun 1998 16:12:58 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from ha1.rdc1.nj.home.com (siteadm@ha1.rdc1.nj.home.com [24.3.128.66]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id QAA18200 for ; Wed, 24 Jun 1998 16:12:54 -0700 (PDT) Received: from cc632587-a ([24.3.148.51]) by ha1.rdc1.nj.home.com (Netscape Mail Server v2.02) with SMTP id AAA4552 for ; Wed, 24 Jun 1998 16:12:22 -0700 Reply-To: From: "David Newkirk" To: Subject: RE: GB> Some useful gb parts at http://wits.atl.org Date: Wed, 24 Jun 1998 19:12:18 -0400 Message-ID: <000101bd9fc5$886a8d60$33940318@cc632587-a.vron1.nj.home.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0 X-Mimeole: Produced By Microsoft MimeOLE V4.72.3110.3 In-reply-to: <35905995.2D5C@atl.org> Importance: Normal Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Bob Duckworth wrote: [deletions] > From the 1941 edition of ARRLs "How to Become a Radio Amateur" [deletions] > While the virtues of improvization receive credit, selling parts > is clearly part of the agenda. > > The beginner will do well to abide by the layout and choice > of parts recommended by the editors. > > :-) I think you're mistaken about the "selling parts" aspect. Having worked at ARRL HQ for a total of about 14 years, I can assure you that time spent doing the "tech support" for a beginner-oriented construction project would convince you that the time to teach the arts of substitution and improvisation is *not* when beginners build their very first transmitters and receivers--a time when a person's emerging engagement with the thrill and magic of a new hobby can easily be dowsed by a bad experience with a frustratingly dead project, particularly the all-important receiver. Further to the point of this particular example, back in 1941, that tech support was handled mainly by typewriting -- perhaps augmented by dictation, which fed into typewriting -- and I know from the published obit of one guy who long handled the Technical Information Service that the lights in the TIS office often burned well into many evenings. For someone new, *really* new, to this wonderful stuff, even someone enthusiastic enough to meet it more than halfway, getting something working with the *right* parts can be challenge enough without entering "the garden of forking paths" of parts substitution. 73, Dave Newkirk, W9VES dpnewkirk@home.com From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jun 25 00:01:25 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id AAA05361 for ; Thu, 25 Jun 1998 00:01:23 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id AAA09151 for ; Thu, 25 Jun 1998 00:03:31 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id UAA19777 for glowbugs-outgoing; Wed, 24 Jun 1998 20:40:28 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.xmission.com (mail.xmission.com [198.60.22.22]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id UAA19772 for ; Wed, 24 Jun 1998 20:40:22 -0700 (PDT) Received: from slc342h.modem.xmission.com (xmission.com) [166.70.2.88] by mail.xmission.com with esmtp (Exim 1.82 #2) id 0yp2sw-0000kH-00; Wed, 24 Jun 1998 21:39:43 -0600 Message-ID: <35917247.28E7102E@xmission.com> Date: Wed, 24 Jun 1998 21:40:26 +0000 From: Dexter Francis Reply-To: cwest@xmission.com Organization: CWest Tube Sales X-Mailer: Mozilla 4.05 (Macintosh; I; PPC) MIME-Version: 1.0 To: "BOATANCHORS@LISTSERV.TEMPE.GOV" , glowbugs@piobaire.mines.uidaho.edu Subject: GB> "Fierce One Watter" added to Project page Content-Type: text/plain; charset=us-ascii; x-mac-type="54455854"; x-mac-creator="4D4F5353" Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Rod Fitz-Randolph sent me the schematic for his "Fierce One Watter", so it's up on the Projects page now too. I did a couple of small editiorial modifications to the schematic, jumpering the cold and ground on the AC power and modifying the symbol for the antenna so it's triangular. Beyond that, it's all Rod's work. Looks like an improved version of the Meissner circuit, and fun to boot. Enjoy -df *** CWest - P.O. Box 22443 Salt Lake City, Utah 84122 *** Visit our Web Page @ http://www.xmission.com/~cwest From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jun 25 01:32:20 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id BAA05408 for ; Thu, 25 Jun 1998 01:32:19 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id BAA14020 for ; Thu, 25 Jun 1998 01:34:28 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id WAA20754 for glowbugs-outgoing; Wed, 24 Jun 1998 22:07:18 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.iaxs.net (root@alyssa.iaxs.net [205.164.100.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id WAA20743 for ; Wed, 24 Jun 1998 22:07:13 -0700 (PDT) Received: from citrus.iaxs.net (bill@citrus.iaxs.net [206.43.66.3]) by mail.iaxs.net (8.8.8/iaxs-19971103) with ESMTP id AAA26915 for ; Thu, 25 Jun 1998 00:06:26 -0500 (CDT) Received: (from bill@localhost) by citrus.iaxs.net (8.8.8/iaxs-citrus-19971103) id AAA21413 for glowbugs@piobaire.mines.uidaho.edu; Thu, 25 Jun 1998 00:06:24 -0500 (CDT) Date: Thu, 25 Jun 1998 00:06:24 -0500 (CDT) From: Bill Hawkins Message-Id: <199806250506.AAA21413@citrus.iaxs.net> To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> 60 KHz regen update Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO The data from the first trial had a 90 Hz BW at -6 Db. Apparently, this is pretty narrow. Most sets use a crystal filter to do that, but that's at a 455 or 500 KHz IF. So I carefully took some new data as I tried to tune the set to 60 KHz. First I took it down to one can, because that's all the trim caps I could find. That gave a -6 Db of 350 Hz and -20 of 2 KHz. With the first can adjusted, I added the second and trimmed it for peak at 60 KHz. Self resonance (oscillating) is at 60.09 KHz, non- oscillating peak is 60.07. The differnce is probably due to unhooking the 200CD generator to let the counter read the self res freq. Adjust the regen to stop oscillation and get -6 Db BW of 168 Hz, -20 is 1.08 KHz. So I tried to get to know the regen adjustment better. Understand, I'm used to applying negative feedback to industrial control loops to stabilize them. But I've read a lot of the regen stuff that's appeared here over the years, so I know that the idea is to get maximum gain before it pops into oscillation. If the generator is at resonance, I see no discontinuity when oscillation begins. Turning the regen cap is like turning a volume control. But if I offset the generator by 100 Hz, I can see the voltage drop until it pops into oscillation with a very clear break point. This is what I would expect as Q gets 'multiplied.' If I set the regen cap that way, I get 80 Hz at -6 and 420 Hz at -20 Db. I did not go back and try that adjustment technique with one can. The difference between that regen point and minimum on the cap is a gain of about 20. Then I went looking at the voltages at the IF can taps, and found that they peaked at 59.7 KHz with min regen. Oscillation is still at 60.09. Apparently there is some interaction when the second can is hooked up to the first. I noticed a level spot in the curve at 58.0 to 58.8 as I was dropping to -40 Db, too. So that's the next thing to investigate. Minus 40 Db ocurred at 61.285 and 56.950, so that's pretty well skewed. Regards, Bill Hawkins From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jun 25 06:08:30 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id GAA05553 for ; Thu, 25 Jun 1998 06:08:29 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id GAA15712 for ; Thu, 25 Jun 1998 06:10:41 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id CAA22591 for glowbugs-outgoing; Thu, 25 Jun 1998 02:50:52 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from ms1.nwla.com (root@[207.22.207.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id CAA22585 for ; Thu, 25 Jun 1998 02:50:47 -0700 (PDT) From: w5sum@ms1.nwla.com Received: from w5sum.nwla.com (ppp16.nwla.com [207.22.207.30]) by ms1.nwla.com (8.7.5/8.7.3) with SMTP id EAA22243; Thu, 25 Jun 1998 04:50:38 -0500 Message-Id: <199806250950.EAA22243@ms1.nwla.com> To: baswaplist@foothill.net, glowbugs@piobaire.mines.uidaho.edu, boatanchors@theporch.com Date: Thu, 25 Jun 1998 04:56:12 +0000 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: GB> VRC Stuff Priority: normal Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO went back yesterday and ALL the VRC cables and antenna accessories had been scooped by someone the evening before. Figures... sorry guys I tried for ya Ronnie W5SUM - Ronnie Hull PO Box 8941 Shreveport, La 71148 From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jun 25 11:49:27 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id LAA05808 for ; Thu, 25 Jun 1998 11:49:26 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id LAA03094 for ; Thu, 25 Jun 1998 11:51:43 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA25209 for glowbugs-outgoing; Thu, 25 Jun 1998 08:21:20 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from inetgw.guidant.com (inetgw.guidant.com [132.189.76.3]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id IAA25203 for ; Thu, 25 Jun 1998 08:21:16 -0700 (PDT) Received: from inetgw.guidant.com (root@localhost) by inetgw.guidant.com with ESMTP id KAA13539 for ; Thu, 25 Jun 1998 10:21:01 -0500 (CDT) Received: from stpmsx01.stp.guidant.com (stpmsx01.stp.guidant.com [132.189.8.30]) by inetgw.guidant.com with ESMTP id KAA13535 for ; Thu, 25 Jun 1998 10:21:01 -0500 (CDT) Received: by stpmsx01.stp.guidant.com with Internet Mail Service (5.0.1458.49) id ; Thu, 25 Jun 1998 10:21:03 -0500 Message-ID: <21B46CBD022AD1118F0500805F15A06884A099@STPMSX05.stp.guidant.com> From: "Freeberg, Scott (STP)" To: "'glowbugs'" Subject: GB> Regen RX Opinions Date: Thu, 25 Jun 1998 10:20:58 -0500 X-Priority: 3 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.0.1458.49) Content-Type: text/plain Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I spent some time with my new regen last night. While it appears to work, I am not happy yet. I was able to find some cw stations but just at a point on the bandset where the receiver goes dead. Anyway, I used a grid dip meter to give me an idea where I was at on 40 meters. Readings did not make sense. I got a GDO reading around 7.6 Mhz yet I know I was in a ham band. I found a strong peak at 3.7 Mhz. Sheesh. I used the 75A4 and listened to 80 meters. Yep, there it was. Its running at 80 meters with the 40 meter coil. I am looking for some opinions. Yes, I know opinions are hard to come by. The receiver is based on the Don Mix W1TS Novice Receiver project from early 60's QST Novice books. The receiver uses 6AQ5's for the detector tube and audio amp tube, plus an MPF102 JFET as a buffer between the antenna and coil, a pot for regen control, no volume control. Bandset is 420 pf with a 5-30 pf bandspread, 5.6 meg/100 pf on the grid leak. With this sort of typical (except for the jfet) regen, what should I expect for performance? Should a two tube regen yield LOUD cw signals, and alot of cw signals? This yielded what I would call weak signals and damn few of them. I once heard a National SW-3 and it sounded great on 40 meter cw, alot of signals, and loud signals. I can't say that about mine. I sort of get the impression that the audio is there, just not alot of rf. What sort of frequency range should I expect from the bandset? I remain excited about this regen but disappointed with its initial performance as a cw receiver. 73, Scott WA9WFA From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jun 25 22:03:51 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id WAA06140 for ; Thu, 25 Jun 1998 22:03:50 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id WAA21479 for ; Thu, 25 Jun 1998 22:06:13 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id SAA02047 for glowbugs-outgoing; Thu, 25 Jun 1998 18:40:09 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from main.aeneas.net (root@main.aeneas.net [207.203.176.23]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id SAA02042 for ; Thu, 25 Jun 1998 18:40:06 -0700 (PDT) Received: from [207.203.177.48] (pmj333.aeneas.net [207.203.177.48]) by main.aeneas.net (8.6.12/8.6.9) with SMTP id UAA30097; Thu, 25 Jun 1998 20:43:12 -0500 X-Sender: w5hvv@mail.aeneas.net Message-Id: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Thu, 25 Jun 1998 20:40:01 +0600 To: homebrew@qth.net, glowbugs@piobaire.mines.uidaho.edu, BOATANCHORS@listserv.tempe.gov From: w5hvv@aeneas.net (Roderick M. Fitz-Randolph) Subject: GB> Heath HW-30 Manual Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I need a manual for the Heath HW-30 "Two-er". Does anyone have one that they are willing to sell me or to copy and send me (reimbursement for copy cost as mail). Please let me know. Thank you, Rod, N5HV w5hvv@aeneas.net From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jun 26 10:12:56 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id KAA06568 for ; Fri, 26 Jun 1998 10:12:56 GMT Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id KAA29901 for ; Fri, 26 Jun 1998 10:15:28 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id GAA06095 for glowbugs-outgoing; Fri, 26 Jun 1998 06:48:37 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.iaxs.net (root@alyssa.iaxs.net [205.164.100.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id GAA06090 for ; Fri, 26 Jun 1998 06:48:33 -0700 (PDT) Received: from citrus.iaxs.net (bill@citrus.iaxs.net [206.43.66.3]) by mail.iaxs.net (8.8.8/iaxs-19971103) with ESMTP id IAA28151 for ; Fri, 26 Jun 1998 08:48:16 -0500 (CDT) Received: (from bill@localhost) by citrus.iaxs.net (8.8.8/iaxs-citrus-19971103) id IAA23519 for glowbugs@piobaire.mines.uidaho.edu; Fri, 26 Jun 1998 08:48:14 -0500 (CDT) Date: Fri, 26 Jun 1998 08:48:14 -0500 (CDT) From: Bill Hawkins Message-Id: <199806261348.IAA23519@citrus.iaxs.net> To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Coupling problems Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO The 60 KHz TRF/regen had an extra peak, so I tried to decouple the two IF cans with a series trimmer. The trimmer droppped the gain so that I couldn't get oscillation with the regen control. Did have classic overcoupling, though. Backed off on the trimmer until there was only one peak, somewhere around 60 pF. But peaking the second can was weird. It wanted more capacity to peak at 60 KHz, but if I did that and then searched for a peak with the generator, it had moved down below 60. The level was getting too low to measure at the cathode of the 6J5, so I switched to the plate. Now I have a double peak, about 3 KHz apart. Tried the cathode again, one peak near 60. Huh? Back to the plate, bypass the cathode. More gain, same behavior. Back off on the regen cap, and go back to one peak near 60 (but further away than at the cathode). There's a minor peak in the skirt at 61. Four books with an entry in the index for regeneration all show single tuned circuits. Some have two tubes, but no quad tuned ckts like I have with the IF cans. All of them use the stage as an RF amplifier/detector. I don't want a detector. Terman says regen isn't used because the single tuned circuit doesn't give enough selectivity. Huh? Seems to me that when the books don't talk about something, it's either because it is impractical or because nobody thought of it yet. Regen has been around a long time. Is the use of regen with multiple tuned circuits impractical? Even for a fixed frequency receiver? Regards, Bill Hawkins From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 27 07:25:31 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id HAA02156 for ; Sat, 27 Jun 1998 07:25:30 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id HAA28049 for ; Sat, 27 Jun 1998 07:25:58 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id EAA16170 for glowbugs-outgoing; Sat, 27 Jun 1998 04:03:41 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from ha1.rdc1.nj.home.com (siteadm@ha1.rdc1.nj.home.com [24.3.128.66]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id EAA16165 for ; Sat, 27 Jun 1998 04:03:36 -0700 (PDT) Received: from cc632587-a ([24.3.148.51]) by ha1.rdc1.nj.home.com (Netscape Mail Server v2.02) with SMTP id AAA24464 for ; Sat, 27 Jun 1998 04:03:30 -0700 Reply-To: From: "David Newkirk" To: "Glowbugs List" Subject: RE: GB> Regen RX Opinions Date: Sat, 27 Jun 1998 07:03:21 -0400 Message-ID: <000001bda1bb$33058d00$33940318@cc632587-a.vron1.nj.home.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0 Importance: Normal In-Reply-To: <21B46CBD022AD1118F0500805F15A06884A099@STPMSX05.stp.guidant.com> X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3110.3 Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Scott Freeberg wrote: [deletions and reshuffling] > The receiver is based on the Don Mix W1TS Novice Receiver project from > early 60's QST Novice books. The receiver uses 6AQ5's for the detector > tube and audio amp tube, plus an MPF102 JFET as a buffer between the > antenna and coil, a pot for regen control, no volume control. Bandset > is 420 pf with a 5-30 pf bandspread, 5.6 meg/100 pf on the grid leak. I've built (and modified) this circuit. My version ultimately ended up with a 12SG7 RF stage, 12AQ5 detector, four triodes of audio (two were used for a twin-T peak filter), a couple of solid-state diodes for audio limiting, and a 12AQ5 cathode follower to drive headphones without the necessity of an output transformer. Long since disassembled, I'm afraid! > I was able to find some cw stations but just > at a point on the bandset where the receiver goes dead. If you can make the detector oscillate at frequencies below and above this dead zone, your circuit includes another resonance that's closely enough coupled to the detector to pull energy out of it at that frequency and make the detector's loop gain insufficient for oscillation. How are you using that JFET? Is it grounded-gate or grounded-source? How, and by how much, is it coupled to the detector? What's the detector load (choke, resistor or other) and what sort of coupling are you using between the detector and the audio amplifier? > With this sort of typical (except for the jfet) regen, what should I > expect for performance? Should a two tube regen yield LOUD cw signals, > and alot of cw signals? Yes, you should hear many signals and they should be reasonably loud. As a sentence in an info box reads: "In fact, the stronger signals will work a loudspeaker with good volume." > What sort of frequency range should I expect from the bandset? The original article (Donald Mix, W1TS, "The Novice Special," QST, June 1956, pages 34-39, 140, 142) and the version in a few editions of "How to Become a Radio Amateur") had this info: 3.2 to 11.5 MHz for the 80-meter coil, 6 to 23 MHz for the 40-meter coil, 10 to 39 MHz for the 20-meter coil, 11 to 40 MHz for the 15-meter coil. > I remain excited about this regen but disappointed with its initial > performance as a cw receiver. Mix later worked quite a few countries using his version (and the 10-, 15- and 20-meter converter he described for it in Donald Mix, W1TS, "A Single-Tube Converter for the Novice Special," QST, October 1956, pages 22-26, 120, 122) for reception as he recounted in "Ivory Tower Confessions," QST, July 1959, pages 55-57. 73, Dave Newkirk, W9VES dpnewkirk@home.com From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 27 08:12:47 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id IAA02213 for ; Sat, 27 Jun 1998 08:12:46 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id IAA01804 for ; Sat, 27 Jun 1998 08:13:16 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id EAA16704 for glowbugs-outgoing; Sat, 27 Jun 1998 04:53:24 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from ha1.rdc1.nj.home.com (siteadm@ha1.rdc1.nj.home.com [24.3.128.66]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id EAA16698 for ; Sat, 27 Jun 1998 04:53:19 -0700 (PDT) Received: from cc632587-a ([24.3.148.51]) by ha1.rdc1.nj.home.com (Netscape Mail Server v2.02) with SMTP id AAA7223 for ; Sat, 27 Jun 1998 04:53:11 -0700 Reply-To: From: "David Newkirk" To: "Glowbugs List" Subject: RE: GB> Coupling problems Date: Sat, 27 Jun 1998 07:53:02 -0400 Message-ID: <000001bda1c2$24362ee0$33940318@cc632587-a.vron1.nj.home.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0 Importance: Normal In-Reply-To: <199806261348.IAA23519@citrus.iaxs.net> X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3110.3 Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Bill Hawkins wrote: [deletions] > Four books with an entry in the index for regeneration all show > single tuned circuits. Some have two tubes, but no quad tuned ckts > like I have with the IF cans. All of them use the stage as an RF > amplifier/detector. I don't want a detector. Terman says regen > isn't used because the single tuned circuit doesn't give enough > selectivity. Huh? He means several things by that. One is that the selectivity obtainable through regneration doesn't have a shape factor that's useful for other than very narrowband communication. (Sharp noise, very wide skirts, low stopband attenuation.) Another is that the selectivity obtainable through regeneration is signal-level dependent. (A regenerative stage's selectivity is maximum at critical regeneration [the feedback level *just* below oscillation]. Incoming signals of moderate and greater strengths change the detector gain and therefore change the selectivity achieved. In effect, the stronger the signal, the broader the selectivity; to maintain high selectivity, you must include some means of variable input coupling or input level control so you can keep the strength of the desired signal at a level that allows you to achieve the desired selectivity.) Another thing he doesn't mention is that a tube's input capacitance varies with its bias. (The "gainier" the tube, the greater the capacitance shift per unit change of bias.) The AGC-related motorboating sometimes experienced with AM-SW broadcast superhets on higher SW frequencies [AGC shifts oscillator and pushes signal out of passband, absence of signal turns up gain and returns signal to passband, AGC shifts oscillator and moves signal out of passband...] especially with the xA7 and xA8 converter tubes, is related to this effect. In an amplifier, an unbypassed cathode resistor can offset this effect somewhat. > Seems to me that when the books don't talk about > something, it's either because it is impractical or because nobody > thought of it yet. Yes. In this case, I think it's because it's impractical. > Regen has been around a long time. Is the use > of regen with multiple tuned circuits impractical? Even for a > fixed frequency receiver? Rememeber, a regenerative stage is an oscillator that may or may not be used in the oscillating condition. (I gather that you won't be using yours in the oscillating condition.) A stage configured as an oscillator oscillates when its feedback-loop gain is sufficient, and in the proper phase, to maintain oscillation. In practice, if the feedback loop contains multiple resonances, the stage automatically finds the highest-Q resonance at which gain and phase are suitable for oscillation and operates there. (If no resonance satisfies those conditions, the result is a very stable *non*oscillating condition.) This is what happens with a tuned-plate, tuned-grid circuit; the tuned circuit with the higher Q pretty much controls the oscillation frequency. I think that the reason we don't see regenerators and oscillators with multiple resonators is because multiple resonators really can't help an oscillator do its job better. You've already discovered that any coupling closer than critical causes a double-humped response. Since the oscillator will "use" only one response in a multiply peaked loop, all extra resonators do is reduce the loop gain. Undercoupling multiple circuits sufficiently to achieve what looks like a single, higher-Q resonance just lowers the loop gain more. (Besides, you will never tune two or more circuits to *exactly* the same frequency--at least not for long. :-D) Whatever improvement in Q might seem to be achieved is more than offset by a decrease in loop gain. I think that one resonator per loop (okay, or two per loop if you're using a TPTG or similar) will pretty much be it. I think also that you'd still run into trouble if you tried to chain multiple single-resonator regenerators at one frequency without at least one nonregenerative buffer stage between every two regenerative stages, because the grid-plate capacitance of even good IF-amp tubes can be sufficient to make a top-coupled double-tuned-circuit filter out of one stage's grid and plate tuned circuits -- an effect that could lead to some quite interesting results if both circuits are part of regenerative loops. One buffering approach worth trying would be to insert a stage of frequency conversion between two regenerators; in effect, this is what was going on with those "regenerative mixer [or RF], regenerative IF" simple superhets of the 30s and 40s. But what *you* want is a TRF! 73, Dave Newkirk, W9VES dpnewkirk@home.com From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 27 08:43:25 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id IAA02245 for ; Sat, 27 Jun 1998 08:43:24 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id IAA27166 for ; Sat, 27 Jun 1998 08:43:54 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id FAA16908 for glowbugs-outgoing; Sat, 27 Jun 1998 05:25:59 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from ha1.rdc1.nj.home.com (siteadm@ha1.rdc1.nj.home.com [24.3.128.66]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id FAA16903 for ; Sat, 27 Jun 1998 05:25:55 -0700 (PDT) Received: from cc632587-a ([24.3.148.51]) by ha1.rdc1.nj.home.com (Netscape Mail Server v2.02) with SMTP id AAA16090 for ; Sat, 27 Jun 1998 05:25:47 -0700 Reply-To: From: "David Newkirk" To: "Glowbugs List" Subject: RE: GB> Coupling problems Date: Sat, 27 Jun 1998 08:25:40 -0400 Message-ID: <000001bda1c6$b281f5e0$33940318@cc632587-a.vron1.nj.home.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0 Importance: Normal In-Reply-To: <000001bda1c2$24362ee0$33940318@cc632587-a.vron1.nj.home.com> X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3110.3 Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Oops -- I wrote: > One is that the selectivity obtainable > through regneration doesn't have a shape factor that's useful for > other than very narrowband communication. (Sharp noise, > very wide skirts, wow stopband attenuation.) That's sharp *nose*. :-D 73, Dave, W9VES dpnewkirk@home.com From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 27 12:42:29 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id MAA02443 for ; Sat, 27 Jun 1998 12:42:28 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id MAA23718 for ; Sat, 27 Jun 1998 12:43:00 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA17915 for glowbugs-outgoing; Sat, 27 Jun 1998 09:18:59 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.iaxs.net (root@alyssa.iaxs.net [205.164.100.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA17910 for ; Sat, 27 Jun 1998 09:18:56 -0700 (PDT) Received: from citrus.iaxs.net (bill@citrus.iaxs.net [206.43.66.3]) by mail.iaxs.net (8.8.8/iaxs-19971103) with ESMTP id LAA05061; Sat, 27 Jun 1998 11:18:39 -0500 (CDT) Received: (from bill@localhost) by citrus.iaxs.net (8.8.8/iaxs-citrus-19971103) id LAA00546; Sat, 27 Jun 1998 11:18:36 -0500 (CDT) Date: Sat, 27 Jun 1998 11:18:36 -0500 (CDT) From: Bill Hawkins Message-Id: <199806271618.LAA00546@citrus.iaxs.net> To: dpnewkirk@home.com, glowbugs@piobaire.mines.uidaho.edu Subject: RE: GB> Coupling problems Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Thanks very much for those comments, Dave. Selectivity with narrow skirts is what I'm looking for, so the wide skirts of regeneration are a problem. I've read some more about coupling, but I don't yet understand why the peak caves in as coupling increases between identical tuned circuits. And then there's the question of why two IF cans in series _did_ yield narrower -6 and -20 dB points until I reduced the coupling. Regards, Bill Hawkins From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 27 13:31:07 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id NAA02486 for ; Sat, 27 Jun 1998 13:31:06 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id NAA00002 for ; Sat, 27 Jun 1998 13:31:40 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA18213 for glowbugs-outgoing; Sat, 27 Jun 1998 10:08:49 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from dfw-ix15.ix.netcom.com (dfw-ix15.ix.netcom.com [206.214.98.15]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id KAA18208 for ; Sat, 27 Jun 1998 10:08:45 -0700 (PDT) From: mjsilva@ix.netcom.com Received: (from smap@localhost) by dfw-ix15.ix.netcom.com (8.8.4/8.8.4) id MAA12601 for glowbugs@piobaire.mines.uidaho.edu; Sat, 27 Jun 1998 12:07:55 -0500 (CDT) Date: Sat, 27 Jun 1998 12:07:55 -0500 (CDT) Received: from val-ca3-59.ix.netcom.com(206.217.130.123) by dfw-ix15.ix.netcom.com via smap (V1.3) id rma012590; Sat Jun 27 12:07:26 1998 To: glowbugs@piobaire.mines.uidaho.edu Message-Id: <199862710731741@ix.netcom.com> Subject: GB> Welcome Dave Newkirk, and a crystal filter question... X-Mailer: NETCOMplete v3.20, from NETCOM On-Line Communications, Inc. MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO First I'd like to say welcome to Dave Newkirk, W9VES. His 40 meter regen article in a 1992 QST probably began my re-kindled interest in tubes, and certainly created my interest in regens and "the old ways". The article is both informative and affectionate, and I'd recommend it to anyone wanting to learn the lore of regens. Now for my question for all of you: I just picked up a bunch of crystals in the 4-5 MHz and 9 MHz range (about 50 at each of 3 frequencies). I believe these are 3rd overtone crystals meant for heterodyne oscillator service for some older Yaesu rigs (the frequencies mentioned are the fundamentals). I'd like to try my hand at building some crystal filters for my slowly-progressing "camp anchor", but I'm not sure if overtone crystals are suitable -- I've heard they can have lots of spurious responses. I'm sure I'll give it a try anyway, using the info in the various ARRL QRP compilations, but does anybody have an opinion on the suitability of these crystals? 73, Mike, KK6GM From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 27 18:18:13 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id SAA02707 for ; Sat, 27 Jun 1998 18:18:13 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id SAA10201 for ; Sat, 27 Jun 1998 18:18:50 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id OAA19597 for glowbugs-outgoing; Sat, 27 Jun 1998 14:52:04 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from radiate.indy.net (radiate.indy.net [199.3.65.253]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id OAA19592 for ; Sat, 27 Jun 1998 14:52:01 -0700 (PDT) Received: from indy3.indy.net (root@indy3.indy.net [199.3.65.14]) by radiate.indy.net (8.8.7/8.8.7) with ESMTP id QAA26119; Sat, 27 Jun 1998 16:36:45 -0500 (EST) Received: from localhost (rbarmore@localhost [127.0.0.1]) by indy3.indy.net (8.8.7/8.8.7) with SMTP id QAA00833; Sat, 27 Jun 1998 16:36:43 -0500 (EST) Date: Sat, 27 Jun 1998 16:36:42 -0500 (EST) From: "Roberta J. Barmore" X-Sender: rbarmore@indy3 To: BA , glowbugs@piobaire.mines.uidaho.edu Subject: GB> Gonna be scarce... Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Hi, Gang! Just a quick FYI--I'm going to be kinda scarce on the air & the lists for the next few (indeterminate measures of time, weeks or more) due to a *major* project at work. Six days a week, 7:00am to 6:00pm or later--I really should've got a degree and flown a desk for a living! On the other hand, it's just as much radio as a person could ever ask for, which is a more-than-silver lining in the cloud! ;) 73, --Bobbi KB9GKX "RJ" rbarmore@indy.net Roberta J. (Bobbi) Barmore FISTS #3388 * G-QRP #10001 * ARRL * RSGB * WIA Appreciator Of Vacuum-Tube Ham Gear and Vintage Keys From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jun 27 20:40:49 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id UAA02813 for ; Sat, 27 Jun 1998 20:40:48 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id UAA25488 for ; Sat, 27 Jun 1998 20:41:27 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id RAA20223 for glowbugs-outgoing; Sat, 27 Jun 1998 17:20:47 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mtiwmhc02.worldnet.att.net (mtiwmhc02.worldnet.att.net [204.127.131.37]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id RAA20216 for ; Sat, 27 Jun 1998 17:20:43 -0700 (PDT) Received: from LOCALNAME ([12.65.130.91]) by mtiwmhc02.worldnet.att.net (InterMail v03.02.03 118 118 102) with SMTP id <19980628001939.MQAV87@LOCALNAME>; Sun, 28 Jun 1998 00:19:39 +0000 X-Sender: ebjr@postoffice.worldnet.att.net X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: , glowbugs@piobaire.mines.uidaho.edu From: Sandy W5TVW Subject: RE: GB> Coupling problems Message-Id: <19980628001939.MQAV87@LOCALNAME> Date: Sun, 28 Jun 1998 00:19:39 +0000 Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Ah yes! One *must* control the signal coupling carefully or all sorts of "crap hits the fan"! I was doing some experimenting with "modern" tubes (triodes in this case) lately, and had some very interesting results. All of my "most successful" receivers have been using old or "old design" type tubes. (i.e.: '01A, '30, '19, 1J6G, etc.) Recently, I wanted to design a receiver around a 6T9 triode/beam tetrode, using the triode as a detector and the beam power tetrode as a high gain AF amp. The AF amplifier was a resounding success, but the detector using the 100 mu triode was dismal! Nothing I did seemed to tame this beast! I changed the tube socket to 9 pin Noval and tried again, this time with the 6EA8, 6U8, 6GH8 family. Somewhat better results with tubes having the lowest triode amplification factor. Still had trouble obtaining smooth regeneration and elimination of the "variable gain or AGC effect" from the detector. Next tried the old reliable 12AU7 and got the most stable results. Still this didn't compare with the "old reliable" '19 or 1J6G circuit still using the familiar 1:3 AF transformer coupling. My conslusions were that I should stick with tubes having the lowest amplification factor possible in the detector! They gave very stable operation, adequate sensitivity without a TRF stage, and extremely smooth control over regeneration. Both variable B+ and throttle capacitor type regeneration controls were tried in the test bed, keeping the detector B+ somewhere in the 15-30 volt range with "tickler" feedback. I have always preferred triodes to pentodes as detectors. They seem to be much easier to get going, and have a greater dynamic range of signal input levels. The pentode being more sensitive, but very fussy about everthing else! Armstrong's invention has always fascinated me greatly! Nothing, however can give one more trouble than an errant regenerative detector! I'm afraid I have to take my hat off to Jim Millen and crew when they designed the SW-3! Back then, they seemed very cautious, as to the inclusion of many shields between stages, especially the TRF/detector stages, which were tightly boxed. Lots of fun, lots of headaches! 73, Sandy W5TVW From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 28 00:59:03 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id AAA03016 for ; Sun, 28 Jun 1998 00:59:02 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id AAA08086 for ; Sun, 28 Jun 1998 00:59:43 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id VAA21236 for glowbugs-outgoing; Sat, 27 Jun 1998 21:35:13 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from Rt66.com (mack.rt66.com [198.59.162.1]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id VAA21231 for ; Sat, 27 Jun 1998 21:35:09 -0700 (PDT) From: msix@rt66.com Received: from localhost (msix@localhost) by Rt66.com (8.8.7/8.8.6) with SMTP id WAA27448; Sat, 27 Jun 1998 22:32:04 -0600 (MDT) Date: Sat, 27 Jun 1998 22:32:04 -0600 (MDT) To: mjsilva@ix.netcom.com cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> a crystal filter question... In-Reply-To: <199862710731741@ix.netcom.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On Sat, 27 Jun 1998 mjsilva@ix.netcom.com wrote: > Now for my question for all of you: I just picked up a bunch of crystals in > the 4-5 MHz and 9 MHz range ... > like to try my hand at building some crystal filters > but I'm not sure if overtone crystals are suitable -- > I've heard they can have lots of spurious responses. > does anybody have an opinion on the suitability of these crystals? May be OK for ladder filters, but not for lattices... If you have access to QRPp, many fine ladder examples as they are used in all QRP rigs. Last week, I mentioned to Dave Newkirk that ladders were easy but lattices are not for the faint of heart. Definitely not plug and play, as many Rx articles suggest. More patience, devotion and test equipment than the average ham is willing to devote. See early QST articles on SSB lattice design by Vester, Healey and Weaver&Brown to get a feel. Homebrewing lattices has just about gone the way of the tail wheel... 73 - John W7ZFB at msix@rt66.com 1400 Catron SE Albq, NM 87123 *********************************************************** * Homebrewer since 1947 CW BoatAnchors Norcal #930 * * Want Halli SR150/400/2000 Xcvrs, dead or alive * * Want Elmac PMR-7 Receiver * *********************************************************** Repeal Ohm's Law... From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 28 04:48:49 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id EAA03222 for ; Sun, 28 Jun 1998 04:48:48 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id EAA14829 for ; Sun, 28 Jun 1998 04:49:32 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id BAA21813 for glowbugs-outgoing; Sun, 28 Jun 1998 01:21:16 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from smtp1.mailsrvcs.net (smtp1.gte.net [207.115.153.30]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id BAA21808 for ; Sun, 28 Jun 1998 01:21:13 -0700 (PDT) Received: from stefanbi (1Cust1.tnt2.redmond.wa.da.uu.net [153.37.199.1]) by smtp1.mailsrvcs.net with SMTP id DAA01198; Sun, 28 Jun 1998 03:20:16 -0500 (CDT) Message-Id: <3.0.5.32.19980628011928.0080e460@mail.gte.net> X-Sender: stefan00@mail.gte.net X-Mailer: QUALCOMM Windows Eudora Pro Version 3.0.5 (32) Date: Sun, 28 Jun 1998 01:19:28 -0700 To: BOATANCHORS@LISTSERV.TEMPE.GOV, glowbugs@piobaire.mines.uidaho.edu From: Stefan Bishay Subject: GB> BC-727 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO What is a BC-727? I have two of these little boxes, with two red indicator lights wired together. All I know is that they are "Self-Destruction Indicator, P/O SCR-515 IFF set" I have four of the BC-645 Transponders, and a dynamotor, but this box is a mystery to me. Any help? I just can't understand how it works with no external connections. Stefan Bishay - KC7SJC Seattle, WA ICQ 2141646 From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 28 12:09:16 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id MAA03554 for ; Sun, 28 Jun 1998 12:09:15 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id MAA16386 for ; Sun, 28 Jun 1998 12:10:05 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA23254 for glowbugs-outgoing; Sun, 28 Jun 1998 08:48:23 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from smtp1.erols.com (smtp1.erols.com [207.172.3.234]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id IAA23249 for ; Sun, 28 Jun 1998 08:48:20 -0700 (PDT) Received: from LOCALNAME (207-172-44-185.s185.tnt3.brd.erols.com [207.172.44.185]) by smtp1.erols.com (8.8.8/8.8.5) with SMTP id LAA08265; Sun, 28 Jun 1998 11:48:03 -0400 (EDT) Message-Id: <199806281548.LAA08265@smtp1.erols.com> X-Sender: wmeara@pop.erols.com X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Sun, 28 Jun 1998 15:45:12 -0400 To: glowbugs@piobaire.mines.uidaho.edu, homebrew@qth.net From: Bill Meara Subject: GB> More Mighty Midget RX News Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Solder melters: I guess you know you are becoming a fanatical homebrewer when even Field Day can't pull you away from the workbench! Here's the latest on my Mighty Midget RX project. This receiver is really FB! I've been amazed by the stability. After a very brief warm up period, I can leave it tuned to rag-chew roundtables on 75 or 40 for hours without having to re tune. It's got all the sensitivity needed on these bands: I can hear the band noise! Without the crystal filter, selectivity is, of course, not so great but the two 455 kc IF cans do an adequate job for phone. Last week I bought a couple of 455 kc filters (one Toyo, one Collins) on the net. I also found some 455 kc crystals. During the next week or so I will be doing some cut-and-try experimentation with various filter arrangements and will report results to the group. I'm also thinking (a little) about an outboard Q multiplier. BTW, this morning I came across an article in the February 1963 issue of CQ describing the pioneering crystal filter work of J.J. Lamb. Lamb wrote QST articles in the August 1932 and March 1933 QSTs describing how to achieve single signal results with one crystal and a variable cap. Frequency coverage is great! With a little pruning of the oscillator coils (wound on pill bottles!) I now have coverage from 3558-3992 kc and 7030-7593 kc. The tuned circuits in the RF amp and mixer grid circuits don't really allow for a "peak" at the low end of 80. I could fix this by adding a bit of capacitance, but I'm not really planning on using this RX for CW so I won't bother. I have had some trouble getting the two ganged tuned circuits to track properly. The two section variable cap I'm using is missing the little screws for the trimmers, so I just experimented a bit with external trimmers of similar values. I found I could get good tracking on one band, but not both. I suspect the inductances of the hand-wound coils are not close enough for good tracking. I decided to optimize for 40. 75/80 still sounds great. I notice some "mixer pulling" of the H.F. oscillator when I swing the cap in the RF amp and mixer grids. But this is no big deal. On really strong SSB sigs, it seems like I don't have enough BFO energy to properly demodulate. I suppose I could put coupling cap between the BFO and the IF amp, but instead I just back off the RF gain a bit and everything comes out just fine. I thought about putting another stage of AF amplification in there, but the Sixer chassis is getting a bit crowded and I decided not to push my luck - too much AF gain on too small a chassis might cause the kind of feedback trouble that I've completely avoided on this project. The RX works fine with headphones, and for speaker operations I just plug in one of those computer speakers with an internal AF amp. Works great! Parts that I've noticed are hard to come by: 455 kc IF cans (AES is out of them!) and of course 455 kc crystals. One final note: When involved in a project like this, its a lot of fun to browse through the radio magazines of the era. Its amazing how many tips and ideas you can pick up by doing this. I hope the other MM projects are going well. 73 de N2CQR Bill Meara, Falls Church, Virginia wmeara@erols.com G-QRP #7965 http://www.mindspring.com/~johnmb/billm.htm From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 28 13:02:43 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id NAA03609 for ; Sun, 28 Jun 1998 13:02:43 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id NAA21102 for ; Sun, 28 Jun 1998 13:03:32 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA23753 for glowbugs-outgoing; Sun, 28 Jun 1998 09:44:57 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id JAA23748; Sun, 28 Jun 1998 09:44:51 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Sun, 28 Jun 1998 09:44:50 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: Bill Meara cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> More Mighty Midget RX News In-Reply-To: <199806281548.LAA08265@smtp1.erols.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Bill: Your reports are VERY interesting and apropos. Keep them coming. One suggestion: the Heath QF-1s are practically ubiquitous on eBay and elsewhere, generally go for less than $20.00. They have all the parts you need and can be easily disassembled from their box and installed in the 6er chassis if you wish to, or left external. I have found the QF-1's I have used to be very useful adjuncts to any receiver. Heck, even an R-390 can use one. They give you the option of nuking heterodynes without effecting the audio quality much when you are listening to SWBC on wide selectivity positions. Another suggestion might be an R-23/ARC-5 "Q-5er" but that is kinda like putting a diamond on a ring made of paper. :-) RE: 455 KC IF cans. Anyone know any other source for them? Can the SS sized ones be made to work in a tube rig? Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 28 13:06:18 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id NAA03618 for ; Sun, 28 Jun 1998 13:06:18 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id NAA18431 for ; Sun, 28 Jun 1998 13:07:08 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA23825 for glowbugs-outgoing; Sun, 28 Jun 1998 09:49:06 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id JAA23819 for ; Sun, 28 Jun 1998 09:49:03 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Sun, 28 Jun 1998 09:49:03 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> FD-98 Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Well, I did the 1D bit from home here. Had lots of other family commitments and Saturday was a real ZOO around here. Worked quite a number of stations on 40 and 80 considering a) my crummy antenna, and b) the very limited amount of time I had to do it. Didn't find any BA folks though. BTW, thanks to all who helped me get my antenna figured out. I still havent gotten the "kink" taken out of it yet. My wife says I am too old to climb a 60 foot pine tree. Besides the car accident I had two years ago affected my balance. Maybe I need a balloon... Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 28 13:18:36 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id NAA03629 for ; Sun, 28 Jun 1998 13:18:36 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id NAA28069 for ; Sun, 28 Jun 1998 13:19:27 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA24029 for glowbugs-outgoing; Sun, 28 Jun 1998 09:58:21 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id JAA24024 for ; Sun, 28 Jun 1998 09:58:18 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Sun, 28 Jun 1998 09:58:18 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> My crummy antenna... In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I called one of the local tree services last week to come give me an estimate about taking the kink out. They have a 60' bucket truck. Haven't seen them yet though. My wife has to go to Mississippi to take our daughter to a therapist there, sometime in July. I'll get it done, one way or another, when she is gone. I am really curious how an end-fed "sloper" will work. It will be pointed east. Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 28 14:09:51 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id OAA03670 for ; Sun, 28 Jun 1998 14:09:50 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id OAA11973 for ; Sun, 28 Jun 1998 14:10:42 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA24982 for glowbugs-outgoing; Sun, 28 Jun 1998 10:53:13 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from els.imed.com (imed.com [192.246.2.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id KAA24977 for ; Sun, 28 Jun 1998 10:53:10 -0700 (PDT) Received: from mails.imed.com by els.imed.com with SMTP (1.38.193.5/15.6) id AA05004; Sun, 28 Jun 1998 12:51:56 -0500 Received: from ccMail by mails.imed.com (IMA Internet Exchange 2.1 Enterprise) id 000C9A9C; Sun, 28 Jun 98 12:51:49 -0600 Mime-Version: 1.0 Date: Sun, 28 Jun 1998 12:33:06 -0600 Message-Id: <000C9A9C.@mails.imed.com> From: mack@mails.imed.com (ray mack) Subject: Re: GB> Welcome Dave Newkirk, and a crystal filter question. To: glowbugs@piobaire.mines.uidaho.edu, mjsilva@ix.netcom.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Description: cc:Mail note part Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO All crystals have spurious responses. some are worse than others. I have put various crystals of the smae types on the network analyser and have seen radically different responses from ostensibly identical crystals. It has been my experience that they are pretty clean in the vicinity of the fundamental. I would say that you should go for it. Now that I think about it, the ones with ugly responses also looked ugly in other respects like equivalent series resistance. I have used microprocessor crystals in the past ( I have about 100 at 16 MHz!) and they work very well as long as you select ones that are closely matched for frequency and low series resistance. Series resstance has a large effect on insertion loss and to a smaller amount the achievable bandwidth. Somewhere along the line I did a bibliography of the various articles in the Ham journals. I probably can't find it now, but I have photocopies of several of the good ones in my desk at work. I'll try to pull the info together. Ray Mack WD5IFS mack@mails.imed.com Friendswood, TX ______________________________ Reply Separator _________________________________ Subject: GB> Welcome Dave Newkirk, and a crystal filter question... Now for my question for all of you: I just picked up a bunch of crystals in the 4-5 MHz and 9 MHz range (about 50 at each of 3 frequencies). I believe these are 3rd overtone crystals meant for heterodyne oscillator service for some older Yaesu rigs (the frequencies mentioned are the fundamentals). I'd like to try my hand at building some crystal filters for my slowly-progressing "camp anchor", but I'm not sure if overtone crystals are suitable -- I've heard they can have lots of spurious responses. I'm sure I'll give it a try anyway, using the info in the various ARRL QRP compilations, but does anybody have an opinion on the suitability of these crystals? 73, Mike, KK6GM From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 28 16:36:26 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id QAA03806 for ; Sun, 28 Jun 1998 16:36:22 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0/8.9.0) with ESMTP id QAA03492 for ; Sun, 28 Jun 1998 16:37:15 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id NAA26087 for glowbugs-outgoing; Sun, 28 Jun 1998 13:15:06 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from atl.org ([199.184.215.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id NAA26082 for ; Sun, 28 Jun 1998 13:15:01 -0700 (PDT) Received: from office (office.atl.org [199.184.215.100]) by atl.org (8.8.0/8.8.0) with SMTP id PAA21331 for ; Sun, 28 Jun 1998 15:47:01 -0400 (EDT) Message-ID: <3595B57A.FB@atl.org> Date: Sun, 28 Jun 1998 04:16:10 +0100 From: BOB DUCKWORTH Reply-To: bob@atl.org Organization: Atlanta Technology Library and Museum X-Mailer: Mozilla 3.01Gold (WinNT; I) MIME-Version: 1.0 To: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> FD-98 References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO FD in Atlanta (actually in Pickens County) WA4RRW was up as 2A. 10 and 15 were hot, E-skip ??? Might have some DX winners judging from the way HC8N and LU7??? were running stations at 20-40 WPM (both as 1D DX :-) Couldn't get AA4RM's RS6 running though. -bob wb4mnf From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 28 19:59:48 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id TAA03965 for ; Sun, 28 Jun 1998 19:59:48 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id UAA13117 for ; Sun, 28 Jun 1998 20:00:44 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id QAA27643 for glowbugs-outgoing; Sun, 28 Jun 1998 16:38:46 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id QAA27638 for ; Sun, 28 Jun 1998 16:38:43 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Sun, 28 Jun 1998 16:38:43 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Interesting contact... Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Well, today, just after FD closed, I heard K7DU calling CQ very near 7050. His signal was pretty strong so I took a chance on my worthless antenna and called him. His name is Geo (George?) and he lives in Hanna, Wyoming. His complete station is home-brew. The TX runs about 250 watts to a pair of 4E27s and his receiver is an HBR-13C (as he calls it). His signal was VERY nice and clean; no chirp, drift, clicks, etc., but did have a little hum on it (I think). He was 589/599 in here (sound familiar?) and I was 559 there. (Sob!...) I told him about the BA/Glowbugs crowd and then sent him an e-mail about the list here so he may be subscribing soon. If any of you HBR afficiandos want to e-mail him, his address is k7dubjc@juno.com BTW, have we decided on a 30 meter frequency yet? If so, I need a crystal for my AN/GRC-109, so please let us know what you all have decided. Also, my final FD score is 35 stations worked in about 1.5 hours of operating time, NONE on a "CQ FD". Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 28 21:16:37 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id VAA04040 for ; Sun, 28 Jun 1998 21:16:37 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id VAA16809 for ; Sun, 28 Jun 1998 21:17:34 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id RAA28119 for glowbugs-outgoing; Sun, 28 Jun 1998 17:54:40 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from getnet.com (gn2.getnet.com [207.254.1.12]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id RAA28109 for ; Sun, 28 Jun 1998 17:54:36 -0700 (PDT) Received: from localhost (jackmead@localhost) by getnet.com (8.8.8/8.8.7) with SMTP id RAA02884; Sun, 28 Jun 1998 17:53:59 -0700 (MST) Date: Sun, 28 Jun 1998 17:53:58 -0700 (MST) From: Jack Meadows Reply-To: Jack Meadows To: Ken Gordon cc: glowbugs@piobaire.mines.uidaho.edu Subject: GB> 30 meters In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On Sun, 28 Jun 1998, Ken Gordon wrote: > > BTW, have we decided on a 30 meter frequency yet? If so, I need a crystal > for my AN/GRC-109, so please let us know what you all have decided. > I've been enjoying many ragchews on 10.119 It's a clear QRG here. Nice to have a band open without the QRN lightning crashes. Hope to see you there Ken. Petersen Radio has about a one week turn around time for crystals...not bad. Also, Norcal offers a 10.116 xtal for only $3.00 and it will VXO easily up to 10.119. That is what I'm using. Best regards, Jack W7QQQ One tube xtal osc glowbug. Mosley CM-1 receiver. From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 28 21:48:50 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id VAA04061 for ; Sun, 28 Jun 1998 21:48:49 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id VAA18545 for ; Sun, 28 Jun 1998 21:49:47 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id SAA28309 for glowbugs-outgoing; Sun, 28 Jun 1998 18:27:21 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from Rt66.com (mack.rt66.com [198.59.162.1]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id SAA28304 for ; Sun, 28 Jun 1998 18:27:16 -0700 (PDT) From: msix@rt66.com Received: from localhost (msix@localhost) by Rt66.com (8.8.7/8.8.6) with SMTP id TAA10562 for ; Sun, 28 Jun 1998 19:24:20 -0600 (MDT) Date: Sun, 28 Jun 1998 19:24:19 -0600 (MDT) To: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Interesting contact... In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Ken said: > Well, today, just after FD closed, I heard K7DU calling CQ abt 7050. > His name is Geo (George?) and he lives in Hanna, Wyoming. > His complete station is home-brew. The TX runs about 250 watts to a pair > of 4E27s and his receiver is an HBR-13C (as he calls it). His signal was > I told him about the BA/Glowbugs crowd and then sent him an e-mail about > the list here so he may be subscribing soon. Yes, I try to work Geo every couple weeks as call and I are from Wyo. Geo is an immigrant from WA. Very nice fellow. Likes homebrew, has bunch of BAs, but backsliding as got Tentec recently, so gotta watch him... He is on 40M PMs then on local 80M AM there nites so may not get on QRG... 73 - John W7ZFB at msix@rt66.com 1400 Catron SE Albq, NM 87123 *********************************************************** * Homebrewer since 1947 CW BoatAnchors Norcal #930 * *********************************************************** Repeal Ohm's Law... From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 28 22:18:22 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id WAA04095 for ; Sun, 28 Jun 1998 22:18:22 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id WAA20030 for ; Sun, 28 Jun 1998 22:19:20 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id SAA28576 for glowbugs-outgoing; Sun, 28 Jun 1998 18:59:56 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id SAA28569; Sun, 28 Jun 1998 18:59:52 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Sun, 28 Jun 1998 18:59:52 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: msix@rt66.com cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Interesting contact... In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > Yes, I try to work Geo every couple weeks as call and I are from Wyo. > Geo is an immigrant from WA. > Very nice fellow. Likes homebrew, has bunch of BAs, but backsliding as > got Tentec recently, so gotta watch him... > He is on 40M PMs then on local 80M AM there nites so may not get on > QRG... Thanks John. I mentioned your name to him in my e-mail to him. Maybe we will see him on this list soon. That way we can keep him from backsliding... Wish me luck on my antennas. Going to try REALLY hard to get some decent ones up soon...IF we don't move to Montana... Ken From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jun 28 22:33:34 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id WAA04116 for ; Sun, 28 Jun 1998 22:33:34 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id WAA21065 for ; Sun, 28 Jun 1998 22:34:30 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id TAA28801 for glowbugs-outgoing; Sun, 28 Jun 1998 19:16:32 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from smtp1.mailsrvcs.net (smtp1.gte.net [207.115.153.30]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id TAA28796 for ; Sun, 28 Jun 1998 19:16:29 -0700 (PDT) Received: from stefanbi (1Cust1.tnt2.redmond.wa.da.uu.net [153.37.199.1]) by smtp1.mailsrvcs.net with SMTP id VAA14562; Sun, 28 Jun 1998 21:15:28 -0500 (CDT) Message-Id: <3.0.5.32.19980628191440.00813100@mail.gte.net> X-Sender: stefan00@mail.gte.net X-Mailer: QUALCOMM Windows Eudora Pro Version 3.0.5 (32) Date: Sun, 28 Jun 1998 19:14:40 -0700 To: baswaplist@foothill.net, BOATANCHORS@LISTSERV.TEMPE.GOV, glowbugs@piobaire.mines.uidaho.edu From: Stefan Bishay Subject: GB> ARB, etc Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I have an old Navy ARB here, in great shape except for a few paint chips on the case. Any ideas on value? Also an MN-26 radio compass, what is that worth? Please respond off the list. Thanks, Stefan Bishay - KC7SJC Seattle, WA ICQ 2141646 From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jun 29 21:08:02 1998 Return-Path: Received: from smtp.WPI.EDU (smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id VAA05173 for ; Mon, 29 Jun 1998 21:08:01 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id VAA32285 for ; Mon, 29 Jun 1998 21:09:14 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id RAA10547 for glowbugs-outgoing; Mon, 29 Jun 1998 17:39:10 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from smtp2.erols.com (smtp2.erols.com [207.172.3.235]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id RAA10542 for ; Mon, 29 Jun 1998 17:39:07 -0700 (PDT) Received: from LOCALNAME (207-172-52-56.s56.tnt1.brd.erols.com [207.172.52.56]) by smtp2.erols.com (8.8.8/8.8.5) with SMTP id UAA08100; Mon, 29 Jun 1998 20:38:30 -0400 (EDT) Message-Id: <199806300038.UAA08100@smtp2.erols.com> X-Sender: wmeara@pop.erols.com X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Tue, 30 Jun 1998 00:35:57 -0400 To: "Greg Swynar" , glowbugs@piobaire.mines.uidaho.edu, homebrew@qth.net From: Bill Meara Subject: GB> Re: "A Mate for the Mighty Midget" Cc: mccoy@zianet.com Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO At 01:35 PM 6/29/98 -0400, Eddy VE3CUI - VE3XZ wrote: >Dear Bill OM... Monday 29-VI-98. > >I thought for the longest time that I was alone in my passion to replicate >the classic McCoy "Mate for the Mighty Midget" receiver...l guess I was >wrong, judging by your comments which were posted on the Radio Amateurs of >Canada web site! > >I built mine some 3 years ago (I wanted to build it since I first saw the >article in the '69 ARRL Handbook---in 1969! Hi). I modified mine, however, >as follows: > >-I added a second IF amplifier (a 6BA6---the sensitivity needed a boost), a >final AF amplifier (a 6AQ5---audio output was too low), a separate BFO >stage (a 6C4---not enough injection), and a voltage regulator for the HF >oscillator and BFO. > >-I made one of the IF stages regenerative, for more selectivity. > >-I tried a single 455 KHz crystal with a phasing scheme, but was not >pleased with the results (hence, the regenerative IF). > >-Mine operates on 160-meters, and 80-meters (other HF bands can be received >by way of an external converter, downloading to 80-meters). > >-Front end overload was terrible, so I built an adjustable, integral >bandpass filter, using two loopstick coils. > >I am very pleased with this little gizmo, so much so that I built a >matching transmitter, utilizing a 2E26 final, modulated by a pair of 6AQ5s >(even the VFO is homebrewed---a single 12AU7, from the first edition of >Understanding Amateur Radio...a classic in its own right!). It's certainly >nice to be able to tell others that one's station is "...100% HOMEBREWED, >OM"!!! Hi Hi. Both units are mounted within separate, homebrewed aluminum >enclosures, and utilize good vernier dials on the tuning capacitors. > >I hope to construct a "higher performance" receiver, Bill, utilizing a 7360 >in the front end (similar to what I saw, again, in the 1969 Handbook). By >the way, I've also built a replica 1929 4-tube regenerative receiver, and a >matching single '45 Hartley oscillator transmitter...some fun! I use this >JUNQUE in the Antique Wireless Association's annual 1929 QSO Party (do you >belong to AWA?). > >Sure would like to hear more of your experiences with McCoy's receiver---is >there some kind of a user's group dedicated to it, either on-the-air or >on-line? Please let me know, if you would, via: > > gswynar@mail.durham.net > >Thanks, Bill, and remember: real Hams have burnt finger tips from hot >soldering irons! 73, de > >Eddy VE3CUI - VE3XZ Eddy: Delighted to get your message and to hear of your Mighty Midget adventures. Sounds like you did some really extensive and FB mods! Congratulations. I've taken the liberty of sending your excellent message to two mailing list groups that I'm sure will find it interesting - we have lots of burnt fingers among us! The first is GLOWBUGS and the other is the HOMEBREW list. You will definitely find kindred spirits in these groups. You should also check out the rec.radio.amateur.homebrew USENET group. Lots of solder melters there also. I will send you some of the earlier postings on this subject along with info on how to subscribe to GLOWBUGS and HOMEBREW. Thanks for letting us know about your FB HB projects. > 73 de N2CQR Bill Meara, Falls Church, Virginia wmeara@erols.com G-QRP #7965 http://www.mindspring.com/~johnmb/billm.htm From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 30 00:48:04 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id AAA05343 for ; Tue, 30 Jun 1998 00:48:03 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id AAA16039 for ; Tue, 30 Jun 1998 00:49:19 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id VAA12914 for glowbugs-outgoing; Mon, 29 Jun 1998 21:09:52 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from main.aeneas.net (root@main.aeneas.net [207.203.176.23]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id VAA12909 for ; Mon, 29 Jun 1998 21:09:47 -0700 (PDT) Received: from [207.203.177.31] (pmj316.aeneas.net [207.203.177.31]) by main.aeneas.net (8.6.12/8.6.9) with SMTP id XAA07072; Mon, 29 Jun 1998 23:11:31 -0500 X-Sender: w5hvv@mail.aeneas.net Message-Id: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Mon, 29 Jun 1998 23:09:43 +0600 To: "Boyd" , BOATANCHORS@listserv.tempe.gov, glowbugs@piobaire.mines.uidaho.edu From: w5hvv@aeneas.net (Roderick M. Fitz-Randolph) Subject: GB> Re: [Drake] Re: [Hallicrafters] [Fwd: GALAXY/GLOBE/WRL Page] Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO >Hi Tom, > Well Galaxy is an illegally imported (Bootleg) CB/Ham Transceiver. >It is sold as a 10 meter radio but we all know what it is used for (CB). >It's my opinion that this product should not be promoted... >Boyd W6DSB ________________________________________________________________________ Boyd, dunno if the above is a joke or not. Assuming you were sincere, the World Radio Labs Galaxy was a rather well known and used transceiver, as I recall.... from possibly before your time: 50's-60's, I believe. The effort to start a Galaxy/Globe/World Radio Labs Page is not what you imply, I can assure you. Rod, N5HV w5hvv@aeneas.net From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 30 01:26:11 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id BAA05382 for ; Tue, 30 Jun 1998 01:26:11 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id BAA17566 for ; Tue, 30 Jun 1998 01:27:28 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id VAA13303 for glowbugs-outgoing; Mon, 29 Jun 1998 21:53:49 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from relay1.Hawaii.edu (root@relay1.hawaii.edu [128.171.3.53]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id VAA13298 for ; Mon, 29 Jun 1998 21:53:45 -0700 (PDT) Received: from uhunix5.its.Hawaii.Edu ([128.171.44.55]) by relay1.Hawaii.Edu with SMTP id <148638(1)>; Mon, 29 Jun 1998 18:52:53 -1000 Received: from localhost by uhunix5.its.Hawaii.Edu with SMTP id <188929(6)>; Mon, 29 Jun 1998 18:52:46 -1000 Date: Mon, 29 Jun 1998 18:52:40 -1000 From: Jeffrey Herman X-Sender: jeffreyh@uhunix5 cc: Boyd , BOATANCHORS@listserv.tempe.gov, glowbugs@piobaire.mines.uidaho.edu To: To: To: Subject: Re: GB> Re: [Drake] Re: [Hallicrafters] [Fwd: GALAXY/GLOBE/WRL Page] In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > Well Galaxy is an illegally imported (Bootleg) CB/Ham Transceiver. >It is sold as a 10 meter radio but we all know what it is used for (CB). >It's my opinion that this product should not be promoted... >Boyd W6DSB You hurt the feelings of my Galaxy GT-550 (80-10m, 550w input SSB, 360w CW [don't know of too many CB rigs that do CW]). It says it won't work until you say you're sorry. Jeff KH2PZ / KH6 From mglover@sampousa.com Tue Jun 30 08:29:28 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id IAA05742 for ; Tue, 30 Jun 1998 08:29:26 -0400 Received: from paris.akorn.net (paris.akorn.net [205.217.100.5]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id IAA04217 for ; Tue, 30 Jun 1998 08:30:49 -0400 (EDT) Received: from NTSERVER1.sampousa.com ([205.216.71.107]) by paris.akorn.net (8.8.5/8.7.3) with ESMTP id IAA14634 for ; Tue, 30 Jun 1998 08:30:44 -0400 (EDT) Message-Id: <199806301230.IAA14634@paris.akorn.net> From: "Michael Glover" To: Subject: Re: KDS-2084M Date: Tue, 30 Jun 1998 08:29:32 -0700 X-MSMail-Priority: Normal X-Priority: 3 X-Mailer: Microsoft Internet Mail 4.70.1155 MIME-Version: 1.0 Content-Type: text/plain; charset=BIG5 Content-Transfer-Encoding: 7bit Status: RO mr. joe the spec for the kds-2084 is horiz. 31.5khz---vert scan 60.0/70.0 hz ---resolution 640x480. tks mg ---------- > From: Joseph Krzeszewski > To: service@sampousa.com > Subject: KDS-2084M > Date: Friday, June 26, 1998 10:22 AM > > I have a Sampo monitor here, model number KDS-2084M. I realize this is > an older model and as such, there is no information about it on your web > site. I need to know the horizontal and vertical sync frequencies. The > Windows 95 drivers and .inf files won't help me as I am using X11.R6. > > Thanks for your time. > > -- Joe From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 30 10:42:03 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id KAA05867 for ; Tue, 30 Jun 1998 10:42:03 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id KAA20978 for ; Tue, 30 Jun 1998 10:43:27 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA17138 for glowbugs-outgoing; Tue, 30 Jun 1998 07:21:18 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id HAA17129 for ; Tue, 30 Jun 1998 07:21:13 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id KAA29243; Tue, 30 Jun 1998 10:16:59 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806301416.KAA29243@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> FD-98 In-Reply-To: from Ken Gordon at "Jun 28, 98 09:49:03 am" To: keng@uidaho.edu (Ken Gordon) Date: Tue, 30 Jun 1998 10:16:52 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu, rdkeys@seedlab1.cropsci.ncsu.edu (User RDKEYS Robert D. Keys) X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > Well, I did the 1D bit from home here. Had lots of other family > commitments and Saturday was a real ZOO around here. Worked quite a number > of stations on 40 and 80 considering a) my crummy antenna, and b) the very > limited amount of time I had to do it. > > Didn't find any BA folks though. Well, Big Bertha Radiomarine made it out to FD, but it was hard on the Olde CW Pfartes, with the 98 degree wx, 100% humiditiy, and 110 heat index. 80M was a bust on FD this year, but the other bands did quite well. On 80M Bertha worked everything the R-388 could hear, but mostly nothing west of the big muddy was heard on the vertical, the 3/4 wave L worked against a counterpoise, or the extended double zepp beaming west. All we could muster was around 150 QSOs. Yech.... There must have been a Faraday cage over the big muddy. We got one TX out there and nary anything else. On the East Coast she was a 599 almost everywhere. I think I worked one BA/GB station, because someone came back after the usual rpt and asked who was on the sending iron. I wrote down who it was but lost the scrap of paper that it was on (a 5 area call sign I think). Anyway, we had a good FD98 with glowenbottles in tow, and had only one problem with a runaway generator that blew the filament fuse in Bertha (caused us to run for some 2 amp fuse wire to rebuild the cartrige fuse on the fly. Although operating separates in the heat of the battle of FD is .... interesting .... to say the least, the combo worked very well using a footswitch to do the antenna changeover relay and keep the hands free for logging and batting the bug. Changing antennae took around 5 seconds to switch alligator leads to the relay. Although the sandybox ether puffers, with their fancy computerized gilli- widgets and gadgets did well on the upper bands, none of them had the fun and camaraderie we had making ol' Big Bertha Radiomarine puff some bigtime ether waves, again, idling along her hefty pair of 813's at a liesurely 150 watties de ethere outputpuffing.....(:+}}..... Ahh, such was FD98........ ZUT DE NA4G/Bob UP From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 30 10:45:44 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id KAA05892 for ; Tue, 30 Jun 1998 10:45:43 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id KAA21756 for ; Tue, 30 Jun 1998 10:47:08 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA17314 for glowbugs-outgoing; Tue, 30 Jun 1998 07:26:03 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id HAA17304 for ; Tue, 30 Jun 1998 07:25:58 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id KAA29260; Tue, 30 Jun 1998 10:21:36 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806301421.KAA29260@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> GL ALL on FD 98 (with glowenbottles of course!) In-Reply-To: <010201bd9f88$42db9f60$0a2a9595@tetrode.ece.tntech.edu> from Conard Murray WS4S at "Jun 24, 98 10:53:41 am" To: cmurray@tntech.edu (Conard Murray WS4S) Date: Tue, 30 Jun 1998 10:21:34 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > Hey Bob, > I will be looking for you from our FD site on the ridgetop west of town. > GL and I hope the 'skeeters aren't too bad! > Conard The skeeters and pesky flycritters and noseeums ate us alive! And, we were in a beautiful pasture with green meadows and lots of tall pine trees for antennaehangers. Alas, the road apples tended to make one step gingerly after dark.....(:+}}..... But, what the heck, that is part of FD......(:+}}..... ZUT DE NA4G/Bob UP p.s. The trees took a 200 foot length of rope to go up and over! That must be between 85 and 100 feet of tree.... wow! I need some of those trees in my back yard, for sure. From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 30 12:34:02 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id MAA06041 for ; Tue, 30 Jun 1998 12:34:01 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id MAA03230 for ; Tue, 30 Jun 1998 12:35:28 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA18552 for glowbugs-outgoing; Tue, 30 Jun 1998 09:09:12 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA18547 for ; Tue, 30 Jun 1998 09:09:09 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id MAA29489; Tue, 30 Jun 1998 12:04:51 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806301604.MAA29489@seedlab1.cropsci.ncsu.edu> Subject: GB> FD98 BA fotos online To: glowbugs@piobaire.mines.uidaho.edu Date: Tue, 30 Jun 1998 12:04:42 -0400 (EDT) Cc: rdkeys@seedlab1.cropsci.ncsu.edu (User RDKEYS Robert D. Keys) X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO One of our club members had a digital camera and took some fotos of the Big Bertha Radiomarine 80M station on FD98. They are on his web page at http://members.aol.com/fdecker in the ham radio section on the Field Day page. If you turn the brightness way up, you can get some idea of what Big Bertha Radiomarine looks like. The tubes are 813's and not 818's. Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 30 13:38:52 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id NAA06103 for ; Tue, 30 Jun 1998 13:38:52 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id NAA12221 for ; Tue, 30 Jun 1998 13:40:18 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA19802 for glowbugs-outgoing; Tue, 30 Jun 1998 10:06:20 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id KAA19796 for ; Tue, 30 Jun 1998 10:06:15 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id NAA29644; Tue, 30 Jun 1998 13:01:53 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806301701.NAA29644@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> Some useful gb parts at http://wits.atl.org In-Reply-To: <000101bd9fc5$886a8d60$33940318@cc632587-a.vron1.nj.home.com> from David Newkirk at "Jun 24, 98 07:12:18 pm" To: dpnewkirk@home.com Date: Tue, 30 Jun 1998 13:01:51 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > > The beginner will do well to abide by the layout and choice > > of parts recommended by the editors. There is some wisdom to this. We have all had those experiences where moving the gilli next to the widget instead of precisely 3 inches therefrom made for problems. > I think you're mistaken about the "selling parts" aspect. Having worked at > ARRL HQ for a total of about 14 years, I can assure you that time spent > doing the "tech support" for a beginner-oriented construction project would > convince you that the time to teach the arts of substitution and > improvisation is *not* when beginners build their very first transmitters > and receivers--a time when a person's emerging engagement with the thrill > and magic of a new hobby can easily be dowsed by a bad experience with a > frustratingly dead project, particularly the all-important receiver. Further > to the point of this particular example, back in 1941, that tech support was > handled mainly by typewriting -- perhaps augmented by dictation, which fed > into typewriting -- and I know from the published obit of one guy who long > handled the Technical Information Service that the lights in the TIS office > often burned well into many evenings. For someone new, *really* new, to this > wonderful stuff, even someone enthusiastic enough to meet it more than > halfway, getting something working with the *right* parts can be challenge > enough without entering "the garden of forking paths" of parts substitution. > > 73, > > Dave Newkirk, W9VES > dpnewkirk@home.com Well said, Dave. I would also take a somewhat diverging point of view, that, with the collective wisdome we have aboard here on the list (and elsewhere) even the rank beginner dipping his fingers for the first time into that ethereal mystery of building something and making it work, can have a reasonable expectation of getting a useful receiver or transmitter together. Rather than writing in to the Tech Dept, all he has to do is holler on the list (shorter turn around time these days.....(:+}}.....). I sense that one of the things we must do is to help the beginner to understand more about what he is trying to build and how it is built and how it is designed, rather than just telling him to jump in and build it. The underlying whys and wherefores are just as important as the particular parts to use, and a necessary understanding of such whys and wherefores is ``basic training'' experience for newbies. Seriously, everyone should have (even the beginner) a point of view and expectation that although certain discrete parts are called for, most of the time you can substitute considerably widely if you understand the function of the part. Collectively, we must help the beginners understand what everything does, and what can be substituted, and what limits of substitution are reasonable. Classic case in point: the magical National Audio Coupler ---- 500h and 0.01ufd regen detector to audio coupler. Although it is ideally suited to coupling say a pentode detector tube into the audio, the reality is that anything from 1h to 1000h will work fairly well. Where values become more critical are things like the actual tuned circuits used, and feedback windings, and that kind of thing. Where the values become more important as opposed to critical are where one is optimizing the performance for particular conditions. Then it can become something the beginner may have trouble with. Case in point, the grid coupler on a regen detector. Typically one sees things like 100pf and 1/2/3 meg ohms used. Practically, anything from 1-1000pf and 100k to 100meg ohms will work. Optimizing may require something more in the range of 10-20pf and 10meg ohms (in my hands) rather than 250pf and 1 meg ohm typical of the early 200M detectors. I sense to a great extent that certain defaults are specified for convenience or availability at the time, and 10-80 years later, we have to punt somewhat to arrive at something that works. As a group, we need to make sure the newbie understands what sort of leeway in punting he may have. I sense that sometimes is not gotten across to the newbies. In working solid state, the tolerances and leeways are somewhat narrow, but the older tube base gear usually can be rather flexible. Again, it is understanding that the newbie needs to get, and we, as the collective elmers need to get across. That is one of the golden things of the list..... it is online tech support, in real time (almost). Also, as hams, we must take the initiative, and if we can't find the exact Parto No. 9 Gilliwidget for our treasured set, then we have to learn to make do with what else we can muster up and make work. That is indeed as much of the fun and challenge as plunking down the guildern de realme at the local Radio Row Parts Mongers for the exact set of parts we need(ed back in 1935 or 1955 or such). Anyway, Dave, ``Welcome Aboard'', and your expertise and wisdom is most welcome. 73/ZUT DE NA4G/Bob UP From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 30 14:53:36 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id OAA06154 for ; Tue, 30 Jun 1998 14:53:31 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id OAA23113 for ; Tue, 30 Jun 1998 14:54:59 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id LAA21376 for glowbugs-outgoing; Tue, 30 Jun 1998 11:19:07 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id LAA21371 for ; Tue, 30 Jun 1998 11:19:03 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id OAA29729; Tue, 30 Jun 1998 14:14:38 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806301814.OAA29729@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> Coupling problems In-Reply-To: <000001bda1c2$24362ee0$33940318@cc632587-a.vron1.nj.home.com> from David Newkirk at "Jun 27, 98 07:53:02 am" To: dpnewkirk@home.com Date: Tue, 30 Jun 1998 14:14:36 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > > Four books with an entry in the index for regeneration all show > > single tuned circuits. Some have two tubes, but no quad tuned ckts > > like I have with the IF cans. All of them use the stage as an RF > > amplifier/detector. I don't want a detector. Terman says regen > > isn't used because the single tuned circuit doesn't give enough > > selectivity. Huh? I would think Ternan(sp?) is implying for use as a bandwidth medium in an IF strip a single tuned circuit with regeneration will not be as good as conventional multiple tuned circuits in the bandwith (and as Dave asserts, bandpass shape). But, as hams, and experimenters, we don't have to work by the dictates and conventions of commercial production manufacture design. > He means several things by that. One is that the selectivity obtainable > through regneration doesn't have a shape factor that's useful for other than > very narrowband communication. (Sharp noise, very wide skirts, low stopband > attenuation.) Another is that the selectivity obtainable through > regeneration is signal-level dependent. (A regenerative stage's selectivity > is maximum at critical regeneration [the feedback level *just* below > oscillation]. Incoming signals of moderate and greater strengths change the > detector gain and therefore change the selectivity achieved. In effect, the > stronger the signal, the broader the selectivity; to maintain high > selectivity, you must include some means of variable input coupling or input > level control so you can keep the strength of the desired signal at a level > that allows you to achieve the desired selectivity.) Good point about the selectivity. It is very narrow, hence not easily shaped or used in things like voice or classic wideband rtty (although I have used regen detectors on narrowband 170hz rtty back when I was an unknowing novice and folks were chuckling at the geek novice --- actually the RAL does pretty well when carefully adjusted on 170hz rtty if the signal to noise is pretty good). On the signal-level issue, that brings home the very important point of uncoupling, uncoupling, uncoupling as much as possible on regen receivers. Classically, on early 200M sets up through about 1926 or so, and maybe as late as Ross Hull's articles in 1928, coupling was an important factor. For some reason, after around 1932 or so, up to the present time, it seems to have been to some extent forgotten. I am not sure why, historically. The more you load up the detector with signal, the more oscillator power is required to heterodyne, and the broader the signal passband. If using regeneration in something like IF or RF strips, then coupling becomes again important to optimize the selectivity. Remeber Fred Sutter's example in 1939 or 40 with the use of 12 inch antennae on regen detectors to increase the selectivity. In my hands it still works. Again, uncouple, uncouple, uncouple with regenerative devices. If you look at some of the 50's and related era regen sets, they occasionally had very small input coupling capacitors that were often adjustable. Where that occurred, they were thinking of the overloading effects on strong signals. In the 60's and later generic electronics press articles we often see, that again seems largely forgotten. Uncoupling on regen detectors really IS an important point never to be forgotten. > Another thing he doesn't mention is that a tube's input capacitance varies > with its bias. (The "gainier" the tube, the greater the capacitance shift > per unit change of bias.) The AGC-related motorboating sometimes experienced > with AM-SW broadcast superhets on higher SW frequencies [AGC shifts > oscillator and pushes signal out of passband, absence of signal turns up > gain and returns signal to passband, AGC shifts oscillator and moves signal > out of passband...] especially with the xA7 and xA8 converter tubes, is > related to this effect. In an amplifier, an unbypassed cathode resistor can > offset this effect somewhat. Thanks for the tidbits. I have wondered why this happened, and never quite gotten the full picture. > > Seems to me that when the books don't talk about > > something, it's either because it is impractical or because nobody > > thought of it yet. > > Yes. In this case, I think it's because it's impractical. Often, I would expect, it is impractical for the commercial interests. As hams, well, we know how practical we can get, right? How else can we make a trf set do yoeman ham duty (impractical, right, but it still can work well). > > Regen has been around a long time. Is the use > > of regen with multiple tuned circuits impractical? Even for a > > fixed frequency receiver? > > Rememeber, a regenerative stage is an oscillator that may or may not be used > in the oscillating condition. (I gather that you won't be using yours in the > oscillating condition.) A stage configured as an oscillator oscillates when > its feedback-loop gain is sufficient, and in the proper phase, to maintain > oscillation. In practice, if the feedback loop contains multiple resonances, > the stage automatically finds the highest-Q resonance at which gain and > phase are suitable for oscillation and operates there. (If no resonance > satisfies those conditions, the result is a very stable *non*oscillating > condition.) This is what happens with a tuned-plate, tuned-grid circuit; the > tuned circuit with the higher Q pretty much controls the oscillation > frequency. I think in his case, as an IF strip, the use of the regeneration to give sharp filtering in a non-oscillating condition may be a good practical approach, if the bugs of coupling and alignment can be worked out. He needs narrow filtering at 60khz, and I would expect that a two stage amplifier using regeneration might do well. I would not expect it to work well at 3 or 4 stages, unless it were carefully uncoupled, bypassed and shielded to prevent motorboating between stages. > I think that the reason we don't see regenerators and oscillators with > multiple resonators is because multiple resonators really can't help an > oscillator do its job better. You've already discovered that any coupling > closer than critical causes a double-humped response. Since the oscillator > will "use" only one response in a multiply peaked loop, all extra resonators > do is reduce the loop gain. Undercoupling multiple circuits sufficiently to > achieve what looks like a single, higher-Q resonance just lowers the loop > gain more. (Besides, you will never tune two or more circuits to *exactly* > the same frequency--at least not for long. :-D) Whatever improvement in Q > might seem to be achieved is more than offset by a decrease in loop gain. I would think that the multiple tuned section would only be used as the input element or coupling element, and not as an actual part of the discrete regenerative circuit. Practically, centering all of the input circuits on the 60khz and then adding regeneration to the last tank of the group to get the regenerative selectivity would be my approach. Adding a second regenerative stage loosely coupled to the first should help, but I would be very leery of more than two stages. All of the input elements would need to be less than critical coupled to get away from the double hump. In terms of achieving maximum selectivity, there might be some advantage to lowering the loop gain maybe for stability concerns? If it were regenerative, I would expect that some means of spot adjustment of the tuning of the individual tanks might be required, on the fly. How practical that is may be open for discussion. My expectation is that the adjustment of multiple stages of tanks within a regenerative ``loop'' would be somewhat tricky and prone to alignment problems. That might again suggest that the multiple tuning input would be good for setting the generic bandpass, and then the regenerative stage following (or stages) would set the peak within the bandpass. > I think that one resonator per loop (okay, or two per loop if you're using a > TPTG or similar) will pretty much be it. I think also that you'd still run > into trouble if you tried to chain multiple single-resonator regenerators at > one frequency without at least one nonregenerative buffer stage between > every two regenerative stages, because the grid-plate capacitance of even > good IF-amp tubes can be sufficient to make a top-coupled > double-tuned-circuit filter out of one stage's grid and plate tuned > circuits -- an effect that could lead to some quite interesting results if > both circuits are part of regenerative loops. One buffering approach worth > trying would be to insert a stage of frequency conversion between two > regenerators; in effect, this is what was going on with those "regenerative > mixer [or RF], regenerative IF" simple superhets of the 30s and 40s. But > what *you* want is a TRF! I would also agree that one regenerative resonator per loop is probably best. Shielding and uncoupling should get around much of the possibility of instability at 60khz. Maybe even something like a cathode follower on the output between the regenerative stages? I would expect that may not be required. At 455khz or 1600khz or higher, something like a cathode follower might be useful. On a 60khz rx, it would be a good candidate for a trf style set. Luv those TRF thingies! Hope it all works out for him. Keep us filled in on how it goes..... Keep the discussion going..... great stuff to ponder and then run to the bench and fingerpoke some. Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 30 15:11:28 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id PAA06181 for ; Tue, 30 Jun 1998 15:11:27 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id PAA22967 for ; Tue, 30 Jun 1998 15:12:54 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id LAA21671 for glowbugs-outgoing; Tue, 30 Jun 1998 11:37:26 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from Rt66.com (mack.rt66.com [198.59.162.1]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id LAA21666 for ; Tue, 30 Jun 1998 11:37:24 -0700 (PDT) From: msix@rt66.com Received: from localhost (msix@localhost) by Rt66.com (8.8.7/8.8.6) with SMTP id MAA27385 for ; Tue, 30 Jun 1998 12:34:43 -0600 (MDT) Date: Tue, 30 Jun 1998 12:34:42 -0600 (MDT) To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Newbies and homebrew In-Reply-To: <199806301701.NAA29644@seedlab1.cropsci.ncsu.edu> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Dave said: > > I think you're mistaken about the "selling parts" aspect. Having worked at > > ARRL HQ for a total of about 14 years, I can assure you that time spent > > doing the "tech support" for a beginner-oriented construction project would > > convince you that the time to teach the arts of substitution and > > improvisation is *not* when beginners build their very first transmitters > > and receivers-- For someone new, *really* new, to this > > wonderful stuff, even someone enthusiastic enough to meet it more than > > halfway, getting something working with the *right* parts can be challenge > > enough without entering "the garden of forking paths" of parts substitution. > > Dave Newkirk, W9VES Then Bob said: > Well said, Dave. I would take a somewhat diverging point of view > that, with the collective wisdome we have aboard here on the list (and > elsewhere) even the rank beginner dipping his fingers for the first time > into that ethereal mystery of building something and making it work, can > have a reasonable expectation of getting a useful receiver or transmitter > together. Rather than writing in to the Tech Dept, all he has to do is > holler on the list (shorter turn around time these days.....(:+}}.....). > 73/ZUT DE NA4G/Bob UP Now I have the effrontery to say: Both approaches assume: the guy can read, understands what he is reading, is curious enough to keep asking til he understands and then applies the wisdom. Based on what I've seen on the reflectors at least 30 percent don't meet above criteria - so plenty good stuff, including Dave's and Bob's and almost everyone else's, is falling on many deaf ears... For example, this morning a fellow asked if it was OK to replace the 56pF LO injection cap with a 6800pF. Bet he won't get an answer but if he does, probably the wrong one. Blind leading the blind and so forth. I favor the Elmer 1 on 1 approach. I did it numerous times - culled the ones who had it and dumped the ones who couldn't spell 'car' even if I spotted them the c and the a... Maybe we need a serious Elmer reflector where old guys can go 1 on 1 with the new guys and then lead them thru the problem offline so no one feels embarrassed or compelled to posture? 73 - John W7ZFB at msix@rt66.com 1400 Catron SE Albq, NM 87123 *********************************************************** * Homebrewer since 1947 CW BoatAnchors Norcal #930 * *********************************************************** From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 30 16:23:48 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id QAA06241 for ; Tue, 30 Jun 1998 16:23:48 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id QAA02988 for ; Tue, 30 Jun 1998 16:25:17 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA22659 for glowbugs-outgoing; Tue, 30 Jun 1998 12:52:03 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id MAA22654 for ; Tue, 30 Jun 1998 12:51:59 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id PAA29870; Tue, 30 Jun 1998 15:47:31 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806301947.PAA29870@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> Newbies and homebrew In-Reply-To: from "msix@rt66.com" at "Jun 30, 98 12:34:42 pm" To: msix@rt66.com Date: Tue, 30 Jun 1998 15:47:28 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > Dave said: > Then Bob said: > Now I have the effrontery to say: Now we have some right good discussion going.....(:+}}... > Both approaches assume: the guy can read, understands what he is > reading, is curious enough to keep asking til he understands and > then applies the wisdom. Based on what I've seen on the reflectors > at least 30 percent don't meet above criteria - so plenty good stuff, > including Dave's and Bob's and almost everyone else's, is falling on > many deaf ears... I have seen some of that, but, my gut feeling of those on this list is that most have enough input under their belts that they pass muster on the above. Outside the list, on the generic Inet hustle, I sometimes wonder. > For example, this morning a fellow asked if it was OK to replace the > 56pF LO injection cap with a 6800pF. Bet he won't get an answer but if > he does, probably the wrong one. Blind leading the blind and so forth. Ouch! Maybe 25-200pf, but I sense a dead short at 6800pf, depending upon how the output is taken away, its frequency, and where it is injected. > I favor the Elmer 1 on 1 approach. I did it numerous times - culled > the ones who had it and dumped the ones who couldn't spell 'car' even > if I spotted them the c and the a... The 1 on 1 elmer approach is always good. Sadly, I fear that much of the wisdom of the aging elmers is fading, and all we have left to go on for what is not in the books is our collective memory. To the extent that the GB list provides some of that collective memory and a sounding board against which it can resonate, that is a close second maybe. > Maybe we need a serious Elmer reflector where old guys can go 1 on 1 > with the new guys and then lead them thru the problem offline so no > one feels embarrassed or compelled to posture? When we started this list, that was one of the underlying assumptions (i.e., it could act as a specialized elmering reflector). Each of us knows a thing or two, and collectively it mounts up to some substantial wisdom. I would hope that it serves to elmer us along. My sincere hope is that we don't wind up losing too much of the details along the way that has taken many of us a lifetime to accumulate or reconstruct from earlier times (few of us actually ran spark sets or detectors and one steps, for real in the old days [even though we is approaching Olde Pfarte status] and it does take a lifetime of study and work with it to make it play well). Much of it is not learned by just reading the old QST's. I know that I keep learning all kinds of new delicious tidbits, off the list, most every day. Mebbie a background Elmer current would be useful, if piobaire might be amenable to it. I dunno, exactly. Conard? > 73 - John W7ZFB at msix@rt66.com > * Homebrewer since 1947 CW BoatAnchors Norcal #930 * John, you is Olde Pfarte status! Congrats and all that, etc....(:+}}... Me, .... I is just Olde Pfarte in training, still.....(:+}}... Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 30 16:28:33 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id QAA06249 for ; Tue, 30 Jun 1998 16:28:32 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id QAA04144 for ; Tue, 30 Jun 1998 16:30:02 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id NAA22782 for glowbugs-outgoing; Tue, 30 Jun 1998 13:08:17 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from inetgw.guidant.com (inetgw.guidant.com [132.189.76.3]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id NAA22776 for ; Tue, 30 Jun 1998 13:08:15 -0700 (PDT) Received: from inetgw.guidant.com (root@localhost) by inetgw.guidant.com with ESMTP id PAA12813 for ; Tue, 30 Jun 1998 15:07:46 -0500 (CDT) Received: from stpmsx01.stp.guidant.com (stpmsx01.stp.guidant.com [132.189.8.30]) by inetgw.guidant.com with ESMTP id PAA12806 for ; Tue, 30 Jun 1998 15:07:46 -0500 (CDT) Received: by stpmsx01.stp.guidant.com with Internet Mail Service (5.0.1458.49) id ; Tue, 30 Jun 1998 15:07:50 -0500 Message-ID: <21B46CBD022AD1118F0500805F15A06884A0A9@STPMSX05.stp.guidant.com> From: "Freeberg, Scott (STP)" To: "'Boatanchors@Tempe'" , "'Boatanchors@theporch'" , "'glowbugs'" Subject: GB> National FB-7 & SW-3 Questions Date: Tue, 30 Jun 1998 15:06:57 -0500 X-Priority: 3 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.0.1458.49) Content-Type: text/plain Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Greetings, I was wondering if there any any folks on here that own and use a National FB-7 or SW-3 receiver . I would like to ask some questions? Thanks, 73, Scott WA9WFA Saint Paul Minn From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 30 16:50:46 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id QAA06279 for ; Tue, 30 Jun 1998 16:50:46 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id QAA06300 for ; Tue, 30 Jun 1998 16:52:11 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id NAA23189 for glowbugs-outgoing; Tue, 30 Jun 1998 13:25:10 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id NAA23182 for ; Tue, 30 Jun 1998 13:25:08 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id QAA00113; Tue, 30 Jun 1998 16:20:41 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199806302020.QAA00113@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> 60 KHz regen update In-Reply-To: <199806250506.AAA21413@citrus.iaxs.net> from Bill Hawkins at "Jun 25, 98 00:06:24 am" To: bill@iaxs.net (Bill Hawkins) Date: Tue, 30 Jun 1998 16:20:39 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > The data from the first trial had a 90 Hz BW at -6 Db. Apparently, this > is pretty narrow. That is very nice. > The differnce is probably due to unhooking > the 200CD generator to let the counter read the self res freq. I would expect that the stray capacitances picked up might do that. > If the generator is at resonance, I > see no discontinuity when oscillation begins. Turning the regen cap is > like turning a volume control. That is the mark of a very good regenerative detector in my book. You should not be able to discern the transition from non-oscillating to oscillating if it is a good one. On a marginal detector the plop as it goes into oscillation will increase (as will the pulling of the detector sometimes). > But if I offset the generator by 100 Hz, > I can see the voltage drop until it pops into oscillation with a very > clear break point. This is what I would expect as Q gets 'multiplied.' > If I set the regen cap that way, I get 80 Hz at -6 and 420 Hz at -20 Db. > I did not go back and try that adjustment technique with one can. The > difference between that regen point and minimum on the cap is a gain > of about 20. You may be running into a reason why a heterodyne receiver is also quite good a LF as opposed to an autodyne receiver (standard regenerative receiver). The selectivity on the detector is so great that as you tune for offset to hear CW, you tune out the desired signal. The Navy (RCA) designed the RBA to overcome that problem. It was a heterodyne (i.e., what modern folks call a direct conversion) receiver. You can hear that occurring on an RAK receiver as you get down to the lowest band. That is WHY they never put audio filtering on the RAK and why all the trf stages and the detector are separately tunable (trimmable) from the front panel..... so the detector and RF stages can be optimized for the particular signal frequency and detector offset used. > I was dropping to -40 Db, too. So that's the next thing to investigate. > Minus 40 Db ocurred at 61.285 and 56.950, so that's pretty well skewed. 3kcs for -40DB.... that seems pretty good. How close did that come to filtering out your 60.2 carrier? Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 30 17:27:15 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id RAA06331 for ; Tue, 30 Jun 1998 17:27:14 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id RAA10699 for ; Tue, 30 Jun 1998 17:28:44 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id NAA23680 for glowbugs-outgoing; Tue, 30 Jun 1998 13:57:32 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from okcforum.org (okcforum.org [206.30.124.5]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id NAA23675 for ; Tue, 30 Jun 1998 13:57:28 -0700 (PDT) Received: (from psykey@localhost) by okcforum.org (8.8.7/8.8.7) id PAA21072 for glowbugs@piobaire.mines.uidaho.edu; Tue, 30 Jun 1998 15:57:03 -0500 From: Jim Glover Message-Id: <199806302057.PAA21072@okcforum.org> Subject: Re: GB> Newbies and homebrew To: glowbugs@piobaire.mines.uidaho.edu Date: Tue, 30 Jun 1998 15:57:03 -0500 (CDT) In-Reply-To: <199806301947.PAA29870@seedlab1.cropsci.ncsu.edu> from "User Rdkeys Robert D. Keys" at Jun 30, 98 03:47:28 pm Content-Type: text Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Folks... As one of the ones who's likely to benefit from the elmering, I'd like to see it all mingled in with the high-level discussions. It would all be more fun for me that way. More expedient to separate the two functions? Perhaps...but I'm in this strictly for the entertainment and enrichment it'll give me over the years, so I tend to favor doing things the fun way. --Jim WB5UDE From glowbugs-owner@piobaire.mines.uidaho.edu Tue Jun 30 18:45:02 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id SAA06382 for ; Tue, 30 Jun 1998 18:45:01 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id SAA16969 for ; Tue, 30 Jun 1998 18:46:32 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id PAA24621 for glowbugs-outgoing; Tue, 30 Jun 1998 15:23:50 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from ha1.rdc1.nj.home.com (siteadm@ha1.rdc1.nj.home.com [24.3.128.66]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id PAA24616 for ; Tue, 30 Jun 1998 15:23:46 -0700 (PDT) Received: from cc632587-a.vron1.nj.home.com ([24.3.148.51]) by ha1.rdc1.nj.home.com (Netscape Mail Server v2.02) with SMTP id AAA18060 for ; Tue, 30 Jun 1998 15:23:06 -0700 Reply-To: From: "David Newkirk" To: "Glowbugs List" Subject: RE: GB> National FB-7 & SW-3 Questions Date: Tue, 30 Jun 1998 18:23:03 -0400 Message-ID: <000201bda475$a5d88000$33940318@cc632587-a.vron1.nj.home.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0 Importance: Normal In-Reply-To: <21B46CBD022AD1118F0500805F15A06884A0A9@STPMSX05.stp.guidant.com> X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3110.3 Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Scott, WA9WFA, wrote: > I was wondering if there any any folks on here that own and use a > National FB-7 or SW-3 receiver. I have an FB-XA that works nicely on 80 and 40. Shoot! 73, Dave Newkirk, W9VES dpnewkirk@home.com From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jul 1 07:40:21 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id HAA07012 for ; Wed, 1 Jul 1998 07:40:20 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id HAA27233 for ; Wed, 1 Jul 1998 07:42:00 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id DAA29491 for glowbugs-outgoing; Wed, 1 Jul 1998 03:59:43 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mixer.visi.com (root@mixer.visi.com [209.98.98.1]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id DAA29486 for ; Wed, 1 Jul 1998 03:59:32 -0700 (PDT) Received: from wb0poq (rodo1@13-215.dynamic.visi.com [209.98.13.215]) by mixer.visi.com (8.8.8/8.7.5) with SMTP id FAA27309 for ; Wed, 1 Jul 1998 05:59:25 -0500 (CDT) Posted-Date: Wed, 1 Jul 1998 05:59:25 -0500 (CDT) Message-ID: <359A15AF.4CAD00FC@visi.com> Date: Wed, 01 Jul 1998 05:55:43 -0500 From: Bob Liesenfeld X-Mailer: Mozilla 2.02 (X11; I; Linux 2.0.27 i586) MIME-Version: 1.0 To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Filter choke Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Hi gang, I have an old Knight T-50 transmitter that needs a new filter choke in the power supply. It is a fullwave, using a 5U4G, feeding a capacitive input pi type filter. The two caps are 8uF, and the key up output is on the order of 720VDC. Maximum current drain would be on the order of 120mA. The Knight part # is 140001. Any ideas on the approximate value this choke should have? Is it perhaps a 'swinging' choke? I can lay my hands on a few different chokes, and would like some input to make an informed choice. Tnx es 72 -- Genuine E-mail From the Land of the Everlasting Icicle... Bob Liesenfeld wb0poq@visi.com From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jul 1 10:03:19 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id KAA07159 for ; Wed, 1 Jul 1998 10:03:19 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id KAA11353 for ; Wed, 1 Jul 1998 10:05:01 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id GAA00612 for glowbugs-outgoing; Wed, 1 Jul 1998 06:36:44 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id GAA00597 for ; Wed, 1 Jul 1998 06:36:38 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id JAA01207; Wed, 1 Jul 1998 09:32:27 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199807011332.JAA01207@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> Filter choke In-Reply-To: <359A15AF.4CAD00FC@visi.com> from Bob Liesenfeld at "Jul 1, 98 05:55:43 am" To: wb0poq@visi.com (Bob Liesenfeld) Date: Wed, 1 Jul 1998 09:32:25 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > Hi gang, > I have an old Knight T-50 transmitter that needs a new filter choke in the > power supply. It is a fullwave, using a 5U4G, feeding a capacitive input pi type > filter. The two caps are 8uF, and the key up output is on the order of 720VDC. > Maximum current drain would be on the order of 120mA. The Knight part # is > 140001. > Any ideas on the approximate value this choke should have? Is it perhaps a > 'swinging' choke? I can lay my hands on a few different chokes, and would like > some input to make an informed choice. > Tnx es 72 That would generically be something in the neighborhood of 10-30h probably rated at 150ma continuous or 100ma intermittent duty (depends upon how heavily the rig was designed to be run). Anything from around 10-30h at 100-300ma should do nicely, depending mainly upon what you can get to fit back in the case. I would expect with 8uf caps that the choke would tend towards 30h more than 10h. To get an idea of what is appropriate, look in any of the old handbooks of the 40's or 50's era for examples. As you increase the choke value you will tend to smooth out the hum a little more. There should not be anything critical in those values on that kind of transmitter. Anything from 4ufd caps with 10h on up should do nicely, depending upon how much AC hum you can tolerate on the output signal. If you are running CW, you can use minimal values. If you are running AM, you need a little more hum filtering to tend towards the largest choke that can fit back in for that mode. Someone who has the schematic or parts list for it can probably give you an exact value. If there is only one choke, it is not going to be a swinging choke. If there are two chokes and it is choke input to the filter, then the first one could be a swinging choke. For all the capacitor input filters they would not be expected to be a swinging choke. Good Luck.... Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jul 1 10:26:31 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id KAA07180 for ; Wed, 1 Jul 1998 10:26:31 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id KAA01643 for ; Wed, 1 Jul 1998 10:28:14 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA01075 for glowbugs-outgoing; Wed, 1 Jul 1998 07:04:58 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from hotmail.com (f59.hotmail.com [207.82.251.193]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id HAA01069 for ; Wed, 1 Jul 1998 07:04:53 -0700 (PDT) Received: (qmail 13536 invoked by uid 0); 1 Jul 1998 14:04:12 -0000 Message-ID: <19980701140412.13535.qmail@hotmail.com> Received: from 147.49.3.25 by www.hotmail.com with HTTP; Wed, 01 Jul 1998 07:04:11 PDT X-Originating-IP: [147.49.3.25] From: "Brad Hernlem" To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> RF Gain in Battery Tubes Content-Type: text/plain Date: Wed, 01 Jul 1998 07:04:11 PDT Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO What is the preferred method, when using filament pentodes, to adjust the gain in an RF stage short of adding a C battery? My references don't show too many examples of receiver RF stages with adjustable gain and those that do employ variable cathode resistors (with non-filament tubes). Is there anything wrong with using screen grid adjustment? Brad ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jul 1 11:19:04 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id LAA07216 for ; Wed, 1 Jul 1998 11:18:54 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id LAA21932 for ; Wed, 1 Jul 1998 11:19:03 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA01485 for glowbugs-outgoing; Wed, 1 Jul 1998 07:53:05 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from inetgw.guidant.com (inetgw.guidant.com [132.189.76.3]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id HAA01480 for ; Wed, 1 Jul 1998 07:53:01 -0700 (PDT) Received: from inetgw.guidant.com (root@localhost) by inetgw.guidant.com with ESMTP id JAA29839 for ; Wed, 1 Jul 1998 09:52:48 -0500 (CDT) Received: from stpmsx01.stp.guidant.com (stpmsx01.stp.guidant.com [132.189.8.30]) by inetgw.guidant.com with ESMTP id JAA29828 for ; Wed, 1 Jul 1998 09:52:48 -0500 (CDT) Received: by stpmsx01.stp.guidant.com with Internet Mail Service (5.0.1458.49) id ; Wed, 1 Jul 1998 09:52:51 -0500 Message-ID: <21B46CBD022AD1118F0500805F15A06884A0BB@STPMSX05.stp.guidant.com> From: "Freeberg, Scott (STP)" To: "'Boatanchors@Tempe'" , "'Boatanchors@theporch'" , "'glowbugs'" Subject: GB> Want Conar Manual Pages Date: Wed, 1 Jul 1998 09:52:26 -0500 X-Priority: 3 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.0.1458.49) Content-Type: text/plain Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Greetings, I just got a Conar 3 band transmitter and receiver. With some audio filtering, these will be fun to play with on 40 and 80 meters. Anyway, I bought a manual for the transmitter and recever from a popular manual house but their receiver master was missing the alignment pages. I would like to get the alignment pages or an original manual for that Conar 500 receiver. As soon as my crystal order arrives, I am putting that Conar 400 transmitter and the Ameco AC-1 on 40 meters! Can't wait! Thanks, Scott WA9WFA in Saint Paul Minn From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jul 1 11:33:48 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id LAA07246 for ; Wed, 1 Jul 1998 11:33:48 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id LAA23112 for ; Wed, 1 Jul 1998 11:35:31 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA01605 for glowbugs-outgoing; Wed, 1 Jul 1998 08:03:19 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from pp.hw.ac.uk (pp@pp.hw.ac.uk [137.195.151.253]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id IAA01600 for ; Wed, 1 Jul 1998 08:03:13 -0700 (PDT) Received: from punt2.hw.ac.uk by pp.hw.ac.uk with SMTP(trusted); Wed, 1 Jul 1998 16:02:52 +0100 Received: from annexuser2.cen.hw.ac.uk (annexuser2.cen.hw.ac.uk [137.195.165.11]) by punt2.hw.ac.uk (8.8.8/8.8.8) with SMTP id QAA26969; Wed, 1 Jul 1998 16:02:44 +0100 Message-Id: <199807011502.QAA26969@punt2.hw.ac.uk> MIME-Version: 1.0 To: wb0poq From: Bill Jarvis CC: glowbugs Date: Wed, 01 Jul 1998 16:02:35 +500 X-Mailer: Net-Tamer 1.11 Subject: GB> Re: GB Filter choke Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On 1998-07-01 wb0poq@visi.com said: Hi gang, I have an old Knight T-50 transmitter that needs a new filter choke in the power supply. It is a fullwave, using a 5U4G, feeding a capacitive input pi type filter. The two caps are 8uF, and the key up output is on the order of 720VDC. Maximum current drain would be on the order of 120mA. The Knight part # is 140001. Any ideas on the approximate value this choke should have? Is it perhaps a 'swinging' choke? I can lay my hands on a few different chokes, and would like some input to make an informed choice. Tnx es 72 -- Genuine E-mail From the Land of the Everlasting Icicle... Bob Liesenfeld wb0poq@visi.com 10 henries would have been typical. 5, and you might hear slight hum. Swinging would help with voltage stability but that is not necessarily an advantage (unless HT or B+ for the oscillator stage also comes from this supply). It's not unusual to use a transformer winding as a replacement choke. Trial and error is most unlikely to do any harm. ============ ===== ===== BILL J. ===== ===== ============ GM8APX, qthr Edinburgh, Scotland, UK Credo nos in fluctu eodem esse Net-Tamer V 1.11 - Registered From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jul 1 11:37:39 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id LAA07255 for ; Wed, 1 Jul 1998 11:37:35 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id LAA22487 for ; Wed, 1 Jul 1998 11:39:16 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA01731 for glowbugs-outgoing; Wed, 1 Jul 1998 08:10:43 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.xmission.com (mail.xmission.com [198.60.22.22]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id IAA01725 for ; Wed, 1 Jul 1998 08:10:40 -0700 (PDT) Received: from slc565.modem.xmission.com (xmission.com) [166.70.7.69] by mail.xmission.com with esmtp (Exim 1.82 #2) id 0yrOWa-00054z-00; Wed, 1 Jul 1998 09:10:21 -0600 Message-ID: <3599FD2B.5BB2A24A@xmission.com> Date: Wed, 01 Jul 1998 09:11:09 +0000 From: Dexter Francis Reply-To: cwest@xmission.com Organization: CWest Tube Sales X-Mailer: Mozilla 4.05 (Macintosh; I; PPC) MIME-Version: 1.0 To: "User Rdkeys Robert D. Keys" CC: Bob Liesenfeld , glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Filter choke References: <199807011332.JAA01207@seedlab1.cropsci.ncsu.edu> Content-Type: text/plain; charset=us-ascii; x-mac-type="54455854"; x-mac-creator="4D4F5353" Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO If you go to http://www.xmission.com:80/~cwest/Reference/PSCircuits.html you'll find schematics and a table of RLC values for some power supplies as recomnended by RCA. -df *** CWest - P.O. Box 22443 Salt Lake City, Utah 84122 *** Visit our Web Page @ http://www.xmission.com/~cwest From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jul 1 11:47:08 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id LAA07266 for ; Wed, 1 Jul 1998 11:47:07 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id LAA21486 for ; Wed, 1 Jul 1998 11:48:49 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA01899 for glowbugs-outgoing; Wed, 1 Jul 1998 08:25:20 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from Rt66.com (mack.rt66.com [198.59.162.1]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id IAA01894 for ; Wed, 1 Jul 1998 08:25:16 -0700 (PDT) From: msix@rt66.com Received: from localhost (msix@localhost) by Rt66.com (8.8.7/8.8.6) with SMTP id JAA05573; Wed, 1 Jul 1998 09:22:37 -0600 (MDT) Date: Wed, 1 Jul 1998 09:22:36 -0600 (MDT) To: Bob Liesenfeld cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Filter choke In-Reply-To: <359A15AF.4CAD00FC@visi.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > I have an old Knight T-50 transmitter that needs a new filter choke in the > power supply. It is a fullwave, using a 5U4G, feeding a capacitive input pi > filter. The two caps are 8uF, and the key up output is on the order of 720VDC. > Maximum current drain would be on the order of 120mA. The Knight part # is Sounds like this supplies an 807 PA plate. If signs output cap replaced, may have failed and trashed choke? Or - choke may have been very underrated. Is there signs of why it failed? Some just used a resistor in cap input supplies. Why not try 200ohms/10W for openers and see... Increasing value of output cap wouldn't hurt, either. 73 - John W7ZFB at msix@rt66.com 1400 Catron SE Albq, NM 87123 *********************************************************** * Homebrewer since 1947 CW BoatAnchors Norcal #930 * *********************************************************** From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jul 1 12:05:55 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id MAA07287 for ; Wed, 1 Jul 1998 12:05:55 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id MAA27495 for ; Wed, 1 Jul 1998 12:07:19 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA02153 for glowbugs-outgoing; Wed, 1 Jul 1998 08:41:51 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from Rt66.com (mack.rt66.com [198.59.162.1]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id IAA02148 for ; Wed, 1 Jul 1998 08:41:47 -0700 (PDT) From: msix@rt66.com Received: from localhost (msix@localhost) by Rt66.com (8.8.7/8.8.6) with SMTP id JAA08207; Wed, 1 Jul 1998 09:39:07 -0600 (MDT) Date: Wed, 1 Jul 1998 09:39:04 -0600 (MDT) To: Brad Hernlem cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> RF Gain in Battery Tubes In-Reply-To: <19980701140412.13535.qmail@hotmail.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > What is the preferred method, when using filament pentodes, to adjust > the gain in an RF stage short of adding a C battery? My references don't > show too many examples of receiver RF stages with adjustable gain and > those that do employ variable cathode resistors (with non-filament > tubes). Is there anything wrong with using screen grid adjustment? > Brad Lots of QRP rigs just use a pot across the input tuned ckt or in the ant lead as there is no gain adjust terminal on an NE-602... Not particularily elegant but easy. 73 - John W7ZFB at msix@rt66.com 1400 Catron SE Albq, NM 87123 *********************************************************** * Homebrewer since 1947 CW BoatAnchors Norcal #930 * *********************************************************** From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jul 1 12:22:26 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id MAA07304 for ; Wed, 1 Jul 1998 12:22:26 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id MAA29265 for ; Wed, 1 Jul 1998 12:23:38 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA02421 for glowbugs-outgoing; Wed, 1 Jul 1998 08:55:06 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from pp.hw.ac.uk (pp@pp.hw.ac.uk [137.195.151.253]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id IAA02415 for ; Wed, 1 Jul 1998 08:55:01 -0700 (PDT) Received: from punt2.hw.ac.uk by pp.hw.ac.uk with SMTP(trusted); Wed, 1 Jul 1998 16:52:42 +0100 Received: from annexuser4.cen.hw.ac.uk (annexuser4.cen.hw.ac.uk [137.195.165.13]) by punt2.hw.ac.uk (8.8.8/8.8.8) with SMTP id QAA27431; Wed, 1 Jul 1998 16:52:32 +0100 Message-Id: <199807011552.QAA27431@punt2.hw.ac.uk> MIME-Version: 1.0 To: alihernlem From: Bill Jarvis CC: glowbugs Date: Wed, 01 Jul 1998 16:52:23 +500 X-Mailer: Net-Tamer 1.11 Subject: GB> Re: GB RF Gain in Battery Tubes Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On 1998-07-01 alihernlem@hotmail.com said: What is the preferred method, when using filament pentodes, to adjust the gain in an RF stage short of adding a C battery? My references don't show too many examples of receiver RF stages with adjustable gain and those that do employ variable cathode resistors (with non-filament tubes). Is there anything wrong with using screen grid adjustment? Brad ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com Nothing wrong. As the VR feeding the screen might carry more current than a VR usually does (i.e., nil!), you might need one rated say 2, 3 or 5 watts. Also it must be decoupled; but at RF that means only 100 pF or so from screen to deck. There is nothing against using an ordinary pot of about 1/2 megohm in the standard potential dividing circuit for RF gain control; except that you are more likely to run into unwanted oscillation because of phase shifts caused by the VR and adjacent Cs. A low pot of under 2 kohm in the cathode would probably work well, too. That would alter the effective grid bias. How about a VR close to the present cathode R (if none, try 100 or 200 ohms) with the control grid returning to the slider instead of to deck? That would also give you variable GB. The VERY simplest approach - a VR in series with the incoming RF signal - ought to be fine, so long as there is no AGC (AVC) already there in the circuit, to counteract it. ALL extra wiring ought to be very short. I have a list of old books about designing/repairing/making valve wirelesses, available on request by email (also a list of valves etc). (Aaargh! Spam!) (Nothing collectable; no silly prices.) ============ ===== ===== BILL J. ===== ===== ============ GM8APX, qthr Edinburgh, Scotland, UK Turbane magna vehiculorum obviam erat tibi venienti hunc? Net-Tamer V 1.11 - Registered From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jul 1 12:26:26 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id MAA07312 for ; Wed, 1 Jul 1998 12:26:25 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id MAA30926 for ; Wed, 1 Jul 1998 12:28:08 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA02561 for glowbugs-outgoing; Wed, 1 Jul 1998 09:00:53 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mixer.visi.com (root@mixer.visi.com [209.98.98.1]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA02553 for ; Wed, 1 Jul 1998 09:00:49 -0700 (PDT) Received: from wb0poq (rodo1@13-216.dynamic.visi.com [209.98.13.216]) by mixer.visi.com (8.8.8/8.7.5) with SMTP id LAA06361 for ; Wed, 1 Jul 1998 11:00:32 -0500 (CDT) Posted-Date: Wed, 1 Jul 1998 11:00:32 -0500 (CDT) Message-ID: <359A5C43.1521F2B9@visi.com> Date: Wed, 01 Jul 1998 10:56:51 -0500 From: Bob Liesenfeld X-Mailer: Mozilla 2.02 (X11; I; Linux 2.0.27 i586) MIME-Version: 1.0 To: Glowbugs list Subject: GB> Re: Filter choke Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Wow! What a response! Thanks to all for the helpful info on my choke querry. 72 -- Genuine E-mail From the Land of the Everlasting Icicle... Bob Liesenfeld wb0poq@visi.com From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jul 1 12:40:46 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id MAA07325 for ; Wed, 1 Jul 1998 12:40:46 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id MAA32378 for ; Wed, 1 Jul 1998 12:42:29 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA02808 for glowbugs-outgoing; Wed, 1 Jul 1998 09:16:27 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from hotmail.com (f52.hotmail.com [207.82.250.63]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id JAA02802 for ; Wed, 1 Jul 1998 09:16:24 -0700 (PDT) Received: (qmail 21022 invoked by uid 0); 1 Jul 1998 16:15:37 -0000 Message-ID: <19980701161537.21020.qmail@hotmail.com> Received: from 147.49.3.25 by www.hotmail.com with HTTP; Wed, 01 Jul 1998 09:15:36 PDT X-Originating-IP: [147.49.3.25] From: "Brad Hernlem" To: B.H.Jarvis@hw.ac.uk Cc: glowbugs@piobaire.mines.uidaho.edu Subject: GB> Re: GB RF Gain in Battery Tubes Content-Type: text/plain Date: Wed, 01 Jul 1998 09:15:36 PDT Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO >A low pot of under 2 kohm in the cathode would probably work well, too. >That would alter the effective grid bias. > >How about a VR close to the present cathode R (if none, try 100 or 200 >ohms) with the control grid returning to the slider instead of to deck? >That would also give you variable GB. The problem with cathode Rs is that I want to tie together in parallel all the filaments of the several tubes which means that they will all be at the same potential. So if I want to change the gain characteristics of the tube I am thinking that I would either have to add a separate grid supply or use the screen grid control method. >The VERY simplest approach - a VR in series with the incoming RF signal >- ought to be fine, so long as there is no AGC (AVC) already there in >the circuit, to counteract it. I am planning a simple regen receiver: 1L4 (Tuned RF), 1L4 (Regen Det) and 3A4 (AF). All these tubes will run off a common 1.5 V battery. >ALL extra wiring ought to be very short. > >I have a list of old books about designing/repairing/making valve >wirelesses, available on request by email (also a list of valves etc). Do you have any design info for what I propose? >(Aaargh! Spam!) (Nothing collectable; no silly prices.) > >============ ===== ===== BILL J. ===== ===== ============ >GM8APX, qthr Edinburgh, Scotland, UK Brad ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jul 1 12:56:19 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id MAA07338 for ; Wed, 1 Jul 1998 12:56:19 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id MAA02150 for ; Wed, 1 Jul 1998 12:57:42 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA03035 for glowbugs-outgoing; Wed, 1 Jul 1998 09:28:14 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from Rt66.com (mack.rt66.com [198.59.162.1]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA03029 for ; Wed, 1 Jul 1998 09:28:09 -0700 (PDT) From: msix@rt66.com Received: from localhost (msix@localhost) by Rt66.com (8.8.7/8.8.6) with SMTP id KAA16039; Wed, 1 Jul 1998 10:25:28 -0600 (MDT) Date: Wed, 1 Jul 1998 10:25:27 -0600 (MDT) To: Bob Liesenfeld cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Filter choke Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO While you're at it, might check filament voltage. If over 6.5 the xfmr was probably made for 108-112 line voltage like most BAs, not 120-122. May run too hot and could fail if not fixed... Fixes: 1. Best is variac. 2. Can switch to S/S rectifiers and use rectifier fil winding in series-aiding with primary. 3. Can add secondary of 6.3V/1A xfmr in series with power xfmr primary. Leave primary of this xfmr floating. Doubt T-50 uses neg grid bias on the PA, but good insurance to put 100-150K resistor across PA grid ckoke in rigs that do. This prevents loss of bias and vaporized finals if choke opens... Seeing a pair of 6KD6s vaporize is a sight I will never forget! 73 - John W7ZFB at msix@rt66.com 1400 Catron SE Albq, NM 87123 *********************************************************** * Homebrewer since 1947 CW BoatAnchors Norcal #930 * *********************************************************** From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jul 1 12:56:51 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id MAA07344 for ; Wed, 1 Jul 1998 12:56:50 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id MAA02460 for ; Wed, 1 Jul 1998 12:58:29 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA03067 for glowbugs-outgoing; Wed, 1 Jul 1998 09:29:33 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from dfw-ix4.ix.netcom.com (dfw-ix4.ix.netcom.com [206.214.98.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA03060 for ; Wed, 1 Jul 1998 09:29:28 -0700 (PDT) Received: (from smap@localhost) by dfw-ix4.ix.netcom.com (8.8.4/8.8.4) id LAA14863; Wed, 1 Jul 1998 11:28:33 -0500 (CDT) Date: Wed, 1 Jul 1998 11:28:33 -0500 (CDT) Message-Id: <199807011628.LAA14863@dfw-ix4.ix.netcom.com> Received: from val-ca3-44.ix.netcom.com(206.217.130.108) by dfw-ix4.ix.netcom.com via smap (V1.3) id rma014852; Wed Jul 1 11:28:17 1998 From: mjsilva@ix.netcom.com (michael silva) Subject: Re: GB> RF Gain in Battery Tubes To: "Brad Hernlem" Cc: glowbugs@piobaire.mines.uidaho.edu Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO You wrote: > >What is the preferred method, when using filament pentodes, to adjust >the gain in an RF stage short of adding a C battery? My references don't >show too many examples of receiver RF stages with adjustable gain and >those that do employ variable cathode resistors (with non-filament >tubes). Is there anything wrong with using screen grid adjustment? One way that filament-tube sets got a bias voltage source was to put a resistor (or choke) between the negative plate supply point and circuit/filament ground. The tube current for all tubes flows through this resistor, raising the ground above the negative plate supply point, like a cathode resistor for the entire set. Perhaps you could put a pot across such a resistor (or just use a pot alone) to get a variable negative voltage. 73, Mike, KK6GM From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jul 1 14:08:39 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id OAA07390 for ; Wed, 1 Jul 1998 14:08:39 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id OAA11019 for ; Wed, 1 Jul 1998 14:10:22 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA04032 for glowbugs-outgoing; Wed, 1 Jul 1998 10:36:10 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from pp.hw.ac.uk (pp@pp.hw.ac.uk [137.195.151.253]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id KAA04019 for ; Wed, 1 Jul 1998 10:35:49 -0700 (PDT) Received: from punt2.hw.ac.uk by pp.hw.ac.uk with SMTP(trusted); Wed, 1 Jul 1998 18:35:23 +0100 Received: from annexuser3.cen.hw.ac.uk (annexuser3.cen.hw.ac.uk [137.195.165.12]) by punt2.hw.ac.uk (8.8.8/8.8.8) with SMTP id SAA27966; Wed, 1 Jul 1998 18:35:16 +0100 Message-Id: <199807011735.SAA27966@punt2.hw.ac.uk> MIME-Version: 1.0 To: alihernlem From: Bill Jarvis CC: glowbugs Date: Wed, 01 Jul 1998 18:35:07 +500 X-Mailer: Net-Tamer 1.11 Subject: GB> Re: GB RF Gain in Battery Tubes Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO snip I am planning a simple regen receiver: 1L4 (Tuned RF), 1L4 (Regen Det) and 3A4 (AF). All these tubes will run off a common 1.5 V battery. Do you have any design info for what I propose? One or more (switched) wavebands? Aerial: ferrite rod, frame, or external long wire only? I'd go for ferrite although it's too "modern". 90 V B battery? I'd try to get the detector working first, then add the RF stage and later the AF stage. Everything as conventional as possible. What kind of detector? Power grid, anode bend, or what? Power grid requires no bias and the tuned L can go direct between grid 1 and deck; but if you insert say 47 pF and a grid leak it will set its own bias and be closer to anode bend. Early hi-fi sets used power grid, allegedly for less audio distortion; but that is something you could experiment with changing later. Your anode load (detector stage) could be untuned (aperiodic) - say a 10 kohm resistance; then for regen, a small VC (say 5 to 22 pF) from anode to a few turns (other end earthed) near the tuning L. Audio through 0.1 uF from the same anode, to top of say 1/2 meg VC (volume control). (But before developing the audio output stage, I'd use a crystal earpiece instead of the volume control.) Screen through say 47 kohm to B+, decoupled with at least 100 pF. I'd try to get this detector stage working well with strong local signals, then work on adding an RF stage. Untuned RF stages are not unknown but they amplify the unwanted signals as well. In a regen, the RF stage is mainly to stop oscillation feeding the aerial and transmitting; but you can add selectivity or sensitivity if needed by tuning the RF stage. With all filaments in parallel, you could use a resistance at the B- battery terminal to provide a negative bias voltage; use enough R for the MAXIMUM bias voltage and use megohms of potential divider for stages which want less bias (if any). A variable (pot) across that R could provide variable GB for your RF gain if wanted but the 1L4 is NOT a variable-mu tube. I'm working on something similar using 1920s 4 V heater valves, just for fun. I keep finding that the KISS principle wins every time. NONE of the complications I've tried so far have added any overall improvement. I'd be interested to hear how you progress. ============ ===== ===== BILL J. ===== ===== ============ GM8APX, qthr Edinburgh, Scotland, UK Tibi gratias agimus quod nihil fumas. Net-Tamer V 1.11 - Registered From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jul 1 14:14:35 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id OAA07399 for ; Wed, 1 Jul 1998 14:14:35 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id OAA11496 for ; Wed, 1 Jul 1998 14:15:44 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA03912 for glowbugs-outgoing; Wed, 1 Jul 1998 10:30:50 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.iaxs.net (root@alyssa.iaxs.net [205.164.100.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id KAA03906 for ; Wed, 1 Jul 1998 10:30:34 -0700 (PDT) Received: from citrus.iaxs.net (bill@citrus.iaxs.net [206.43.66.3]) by mail.iaxs.net (8.8.8/iaxs-19971103) with ESMTP id MAA15033; Wed, 1 Jul 1998 12:29:11 -0500 (CDT) Received: (from bill@localhost) by citrus.iaxs.net (8.8.8/iaxs-citrus-19971103) id MAA07619; Wed, 1 Jul 1998 12:29:10 -0500 (CDT) Date: Wed, 1 Jul 1998 12:29:10 -0500 (CDT) From: Bill Hawkins Message-Id: <199807011729.MAA07619@citrus.iaxs.net> To: alihernlem@hotmail.com, mjsilva@ix.netcom.com Subject: Re: GB> RF Gain in Battery Tubes Cc: glowbugs@piobaire.mines.uidaho.edu Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Didn't the battery sets of the 20's use a filament rheostat for adjusting gain? Reducing electron emission will reduce gain, whaddaya think? Regards, Bill Hawkins From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jul 1 15:44:37 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id PAA07658 for ; Wed, 1 Jul 1998 15:44:37 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id PAA23761 for ; Wed, 1 Jul 1998 15:46:09 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA05273 for glowbugs-outgoing; Wed, 1 Jul 1998 12:11:38 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id MAA05267 for ; Wed, 1 Jul 1998 12:11:33 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id PAA05104; Wed, 1 Jul 1998 15:04:48 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199807011904.PAA05104@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> RF Gain in Battery Tubes (old types) In-Reply-To: <199807011729.MAA07619@citrus.iaxs.net> from Bill Hawkins at "Jul 1, 98 12:29:10 pm" To: bill@iaxs.net (Bill Hawkins) Date: Wed, 1 Jul 1998 15:04:44 -0400 (EDT) Cc: glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > Didn't the battery sets of the 20's use a filament rheostat for adjusting > gain? Reducing electron emission will reduce gain, whaddaya think? It works fairly well, within reason. Typically, things like the '01A run well from 3.5 volts up to 5.1 volts on the filaments. Mine, I try to run at around 4.2 volts, usually. On the average rheostat for the type, and running a pair of tubes (detector and one step), that is just when the rheostat makes. In practice, there is not a lot of difference in ``gain'' between that point and full filament voltage. Coupling makes a much better gain control on the average regen set. On '30's in the same set, I use 3.3 volts (3 wet nicad cells) and the rheostat mimimized to get somewhere around 2.7 volts to run them. Some workers are of the opinion that running at reduced voltage can be harmful to the filament life. I have yet to run into any such problem on '01A/30/32 tubes. On very weak '01A's a jolt up to 5 volts for a few seconds clears up any minor tendency to weakness at reduced voltage. I tend to run battery tubes very lightly (24-48 plate volts maximally), and that seems to do fine on reduced voltages in my hands. Running them harder than that I have no data on. Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Wed Jul 1 23:55:38 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id XAA08062 for ; Wed, 1 Jul 1998 23:55:37 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id XAA28893 for ; Wed, 1 Jul 1998 23:57:27 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id UAA09111 for glowbugs-outgoing; Wed, 1 Jul 1998 20:31:42 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from dfw-ix13.ix.netcom.com (dfw-ix13.ix.netcom.com [206.214.98.13]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id UAA09106 for ; Wed, 1 Jul 1998 20:31:36 -0700 (PDT) From: mjsilva@ix.netcom.com Received: (from smap@localhost) by dfw-ix13.ix.netcom.com (8.8.4/8.8.4) id WAA01771 for glowbugs@piobaire.mines.uidaho.edu; Wed, 1 Jul 1998 22:30:24 -0500 (CDT) Date: Wed, 1 Jul 1998 22:30:24 -0500 (CDT) Received: from val-ca1-06.ix.netcom.com(205.184.26.38) by dfw-ix13.ix.netcom.com via smap (V1.3) id rma001732; Wed Jul 1 22:29:41 1998 To: glowbugs@piobaire.mines.uidaho.edu Message-Id: <19987120294646334@ix.netcom.com> Subject: GB> 12HL7 -- too hot for homebrew? X-Mailer: NETCOMplete v3.20, from NETCOM On-Line Communications, Inc. MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Hi all, I just got some 12HL7 video amplifier tubes -- similar to the 12BY7 and with the nice 6/12 v filament arrangement, but with about twice the transconductance (21,000 vs. 11,000). I've never worked with such a hot tube before and I'm wondering if it will be a pain in the anode. I'd be using it in the xtal oscillator and/or VFO role, so how do you all think it will behave, with reasonable layout precautions and feedback reduced accordingly? BTW, got them for 50 cents from the latest AES flyer. 73, Mike, KK6GM From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jul 2 01:27:04 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id BAA08142 for ; Thu, 2 Jul 1998 01:27:03 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id BAA03926 for ; Thu, 2 Jul 1998 01:28:57 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id WAA10272 for glowbugs-outgoing; Wed, 1 Jul 1998 22:05:06 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id WAA10252; Wed, 1 Jul 1998 22:04:56 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Wed, 1 Jul 1998 22:04:56 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: msix@rt66.com cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Newbies and homebrew In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > Maybe we need a serious Elmer reflector where old guys can go 1 on 1 > with the new guys and then lead them thru the problem offline so no > one feels embarrassed or compelled to posture? Excellent idea! I can provide the space on our server. Ken From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jul 2 02:18:04 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id CAA08195 for ; Thu, 2 Jul 1998 02:18:02 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id CAA02542 for ; Thu, 2 Jul 1998 02:19:56 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id WAA10734 for glowbugs-outgoing; Wed, 1 Jul 1998 22:57:24 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from Rt66.com (mack.rt66.com [198.59.162.1]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id WAA10729 for ; Wed, 1 Jul 1998 22:57:20 -0700 (PDT) From: msix@rt66.com Received: from localhost (msix@localhost) by Rt66.com (8.8.7/8.8.6) with SMTP id XAA06328; Wed, 1 Jul 1998 23:54:15 -0600 (MDT) Date: Wed, 1 Jul 1998 23:54:15 -0600 (MDT) To: mjsilva@ix.netcom.com cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> 12HL7 -- too hot for homebrew? In-Reply-To: <19987120294646334@ix.netcom.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > I just got some 12HL7 video amplifier tubes -- similar to the 12BY7 and with the nice 6/12 v > filament arrangement, but with about twice the transconductance (21,000 vs. 11,000). I've never > worked with such a hot tube before and I'm wondering if it will be a pain in the anode. I'd be > using it in the xtal oscillator and/or VFO role, so how do you all think it will behave, with > reasonable layout precautions and feedback reduced accordingly? > Mike, KK6GM I tried this one in a couple of driver sockets. Plenty hot. I recall I had to back the drive pot down quite a bit, so they definitely have more gain than 12BY7. Didn't leave in as didn't need the extra gain. Jerry, W0GAQ put me onto it couple years ago. Don't know how he does it, but knows every tube ever made. That's how I found out about the hi gm 6GM6 and 6EW6 for Rx RF Amp service. Have found the 6AG7 and 6CL6 at 9-11000 gm make excellent VFOs at 105V or 150V Reg. Seem more stable at lower voltage. Much stabler than the smaller pentodes when you need some power out. I've always assumed they were better because of their hi gm internal geometry (grid and screen tightly coupled to cathode but suppressor and plate far, far away) which isn't the case with normal gm pentodes. With this configuration, the plate load is well isolated from the VFO action going on between grid and cathode, thus better stability. But then, I may be missing something... Anyway, I tend to think hi gm is a plus for VFOs - not for gain so much as for geometry. Imagine 12HL7 has same hi gm geometry. Why not tack something together and report back... 73 - John W7ZFB at msix@rt66.com 1400 Catron SE Albq, NM 87123 *********************************************************** * Homebrewer since 1947 CW BoatAnchors Norcal #930 * *********************************************************** From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jul 2 07:14:41 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id HAA08456 for ; Thu, 2 Jul 1998 07:14:40 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id HAA07399 for ; Thu, 2 Jul 1998 07:16:38 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id DAA12483 for glowbugs-outgoing; Thu, 2 Jul 1998 03:49:36 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from smtp3.erols.com (smtp3.erols.com [207.172.3.236]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id DAA12478 for ; Thu, 2 Jul 1998 03:49:30 -0700 (PDT) Received: from LOCALNAME (207-172-119-7.s7.tnt2.brd.erols.com [207.172.119.7]) by smtp3.erols.com (8.8.8/8.8.5) with SMTP id GAA26384; Thu, 2 Jul 1998 06:49:23 -0400 (EDT) Message-Id: <199807021049.GAA26384@smtp3.erols.com> X-Sender: wmeara@pop.erols.com X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Thu, 02 Jul 1998 10:46:59 -0400 To: glowbugs@piobaire.mines.uidaho.edu, homebrew@qth.net From: Bill Meara Subject: GB> Cool Frank Jones trick Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Saw a Frank Jones article in an old CQ. Sort of an update on his supergainer. In the IF he had one crystal filter in the first stage, with the regen taking place in the next IF stage. The crystal filter had the classic "phasing cap." Frank bent part of one of the rotor plates out, so if you wanted to short out the crystal you just turned the phasing control until the rotor made contact with the stator. This was the "phone" position. I thought that was clever. > 73 de N2CQR Bill Meara, Falls Church, Virginia wmeara@erols.com G-QRP #7965 http://www.mindspring.com/~johnmb/billm.htm From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jul 2 09:55:05 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id JAA08589 for ; Thu, 2 Jul 1998 09:55:04 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id JAA29721 for ; Thu, 2 Jul 1998 09:57:04 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id GAA13639 for glowbugs-outgoing; Thu, 2 Jul 1998 06:32:58 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id GAA13634 for ; Thu, 2 Jul 1998 06:32:55 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id JAA00220; Thu, 2 Jul 1998 09:28:32 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199807021328.JAA00220@seedlab1.cropsci.ncsu.edu> Subject: GB> Battery tube filament voltages --- be careful In-Reply-To: from Mark Dittmar at "Jul 1, 98 01:43:46 pm" To: Mark_Dittmar@maxtor.com Date: Thu, 2 Jul 1998 09:28:30 -0400 (EDT) Cc: rdkeys@seedlab1.cropsci.ncsu.edu (User RDKEYS Robert D. Keys), glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > Bob- > > You wrote that: > > " On '30's in the same set, I use 3.3 volts (3 wet nicad cells) and the > rheostat mimimized to get somewhere around 2.7 volts to run them." 1.7 volts (typo...sorry) > I thought that 30s ran on 2 V, 60 ma MAX. I have a regen set I > built from 30's and am running the filaments at 2.0 VDC. Do you think its > OK to run at around 3 VDC ? It might explain the relatively low volume > I'm getting into my headphones. You are right..... 3 volts on 30's will nuke them.... please be careful. ----------------- They are rated at 2 volts and 60ma, and I run them a little below that at around 1.7 volts. That is plenty to make them work fine in a small regen set. Low volume would be due to some other kind of mismatch or problem. On my set, I get better volume on the 30's than the '01A's, by a slight bit. They are very comparable in my set and I swap them back and forth fine, generally. My stock of '01A's is down to about half a dozen used ones, so I usually drop 30's in when I need to and use them instead. > Thanks, > Mark DIttmar > AB0CW You are welcome, and for sure, I don't want anyone to nuke their precious '30 tubes. Always check that you have the right voltages on the filaments or a little less, to conserve filament life. Generally, on small regen sets where plate power in the tubes is not maxed out, you can drop the filament voltages down to 80-90% and conserve the filament life considerably. That is mostly on thoriated tungsten filaments, but it also works on coated filaments. Generally, for the particular set, reduce the filament voltage to the point where the set drops off, and then increase just above that point. There is no reason to run the filaments hotter than that in most applications. Where you are running the tubes for power, the same can hold true, but you play a game of running the filaments hot enough to emit sufficient for the plate current you need to pass. Beyond that you don't really need to go. It can conserve filament life, considerably. Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jul 2 10:43:39 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id KAA08624 for ; Thu, 2 Jul 1998 10:43:39 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id KAA00643 for ; Thu, 2 Jul 1998 10:45:39 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA14027 for glowbugs-outgoing; Thu, 2 Jul 1998 07:24:35 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id HAA14021; Thu, 2 Jul 1998 07:24:20 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Thu, 2 Jul 1998 07:24:19 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: Bill Meara cc: glowbugs@piobaire.mines.uidaho.edu, homebrew@qth.net Subject: Re: GB> Cool Frank Jones trick In-Reply-To: <199807021049.GAA26384@smtp3.erols.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > Saw a Frank Jones article in an old CQ. Sort of an update on his > supergainer. In the IF he had one crystal filter in the first stage, with > the regen taking place in the next IF stage. The crystal filter had the > classic "phasing cap." Frank bent part of one of the rotor plates out, so > if you wanted to short out the crystal you just turned the phasing control > until the rotor made contact with the stator. This was the "phone" > position. I thought that was clever. That exact same method is used in the R-1004 (receiver portion of the AN/GRC-109) to switch the bfo to a frequency too high to hear. The BFO in the R-1004 also provides a source of voltage for biasing the RF and IF stages. Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jul 2 11:48:18 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id LAA08710 for ; Thu, 2 Jul 1998 11:48:18 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id LAA19750 for ; Thu, 2 Jul 1998 11:50:18 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA14827 for glowbugs-outgoing; Thu, 2 Jul 1998 08:16:15 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id IAA14807 for ; Thu, 2 Jul 1998 08:15:26 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.8/8.8.8) id LAA08363; Thu, 2 Jul 1998 11:10:20 -0400 (EDT) (envelope-from rdkeys) From: "User Rdkeys Robert D. Keys" Message-Id: <199807021510.LAA08363@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> Cool Frank Jones trick In-Reply-To: from Ken Gordon at "Jul 2, 98 07:24:19 am" To: keng@uidaho.edu (Ken Gordon) Date: Thu, 2 Jul 1998 11:10:17 -0400 (EDT) Cc: wmeara@erols.com, glowbugs@piobaire.mines.uidaho.edu, homebrew@qth.net X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > > Saw a Frank Jones article in an old CQ. Sort of an update on his > > supergainer. In the IF he had one crystal filter in the first stage, with > > the regen taking place in the next IF stage. The crystal filter had the > > classic "phasing cap." Frank bent part of one of the rotor plates out, so > > if you wanted to short out the crystal you just turned the phasing control > > until the rotor made contact with the stator. This was the "phone" > > position. I thought that was clever. > > That exact same method is used in the R-1004 (receiver portion of the > AN/GRC-109) to switch the bfo to a frequency too high to hear. The BFO in > the R-1004 also provides a source of voltage for biasing the RF and IF > stages. I had a friend that used a similar ``fsk'' approach to do QSK on his vfo. Key down pulled the vfo to the operating frequency. Key up released it to some mc off, so the output went to zero. Worked fine. Hams are full of clever things to make something work..... that is part of ham radio! Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Thu Jul 2 18:53:39 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id SAA08974 for ; Thu, 2 Jul 1998 18:53:38 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id SAA30114 for ; Thu, 2 Jul 1998 18:55:44 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id PAA18962 for glowbugs-outgoing; Thu, 2 Jul 1998 15:32:12 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from ha1.rdc1.nj.home.com (siteadm@ha1.rdc1.nj.home.com [24.3.128.66]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id PAA18957 for ; Thu, 2 Jul 1998 15:32:07 -0700 (PDT) Received: from cc632587-a.vron1.nj.home.com ([24.3.148.51]) by ha1.rdc1.nj.home.com (Netscape Mail Server v2.02) with SMTP id AAA27066 for ; Thu, 2 Jul 1998 15:31:36 -0700 Reply-To: From: "David Newkirk" To: "Glowbugs List" Subject: RE: GB> 12HL7 -- too hot for homebrew? Date: Thu, 2 Jul 1998 18:31:14 -0400 Message-ID: <000001bda609$1f1617e0$33940318@cc632587-a.vron1.nj.home.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0 X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3110.3 Importance: Normal Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Mike, KK6GM, wrote: > I just got some 12HL7 video amplifier tubes -- similar to the 12BY7 and with the nice 6/12 v > filament arrangement, but with about twice the transconductance (21,000 vs. 11,000). I've never > worked with such a hot tube before and I'm wondering if it will be a pain in the anode. I'd be > using it in the xtal oscillator and/or VFO role, so how do you all think it will behave, with > reasonable layout precautions and feedback reduced accordingly? and John, W7ZFB, wrote: > I tried this one in a couple of driver sockets. Plenty hot. > I recall I had to back the drive pot down quite a bit, so they > definitely have more gain than 12BY7. [deletion] > Have found the 6AG7 and 6CL6 at 9-11000 gm make excellent VFOs at 105V > or 150V Reg. Seem more stable at lower voltage. > Much stabler than the smaller pentodes when you need some power out. > > I've always assumed they were better because of their hi gm internal > geometry (grid and screen tightly coupled to cathode but suppressor > and plate far, far away) which isn't the case with normal gm pentodes. > With this configuration, the plate load is well isolated from the VFO > action going on between grid and cathode, thus better stability. > But then, I may be missing something... [deletion] Thd 12HL7 is a great oscillator tube, as are the others that John mentions. The 6AH6 and equivalents, including the 6AC7, are good, too. What we're after is not just high grid-plate transconductance -- many sweep tubes have that -- but high transconductance *and high grid-screen mu*. The grid-screen mu is important because most of the oscillator circuits in which we use these tubes use the screen-grid-cathode triode as the oscillator--that is, as electron-coupled oscillators. A figure of 20 or more is the key. Per Langford-Smith, a pentode/tetrode's grid-screen mu is essentially identical to its mu when triod-connected (screen tied to plate), so a look at some sweep tube specs will reveal that such tubes are *not* the choice for electron-coupled oscillators despite their high transconductance. Bottom line: Tubes intended for "instrumentation" or video-amplifier service are the ones to go for. The 6AG7, 6AK7, 6AC7, 6AH6, 6CL6, 12BY7, 12GN7, 12HL7 come to mind; maybe the 6GK6, although its grid-plate capacitance is higher than these others. Lower plate-grid capacitance (another aspect where sweep tubes and audio power tubes are generally crummy) is also important, so it's a good idea to always use a close-fitting metal shield with glass video amplifier tubes because the presence of a shield reduces the g-p capacitance by a factor of 2 or so. This makes the 6AG7 an excellent choice in the sense that it's got a built-in shield and a heftier plate than the 6AC7. Am in the process of writing up an article on this for Web distribution. I keep adding ideas, so it'll probably be August or September before it's done! 73, Dave Newkirk, W9VES dpnewkirk@home.com From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jul 3 00:01:32 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id AAA09202 for ; Fri, 3 Jul 1998 00:01:31 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id AAA16560 for ; Fri, 3 Jul 1998 00:03:40 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id UAA20878 for glowbugs-outgoing; Thu, 2 Jul 1998 20:47:25 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mtiwmhc03.worldnet.att.net (mtiwmhc03.worldnet.att.net [204.127.131.38]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id UAA20873 for ; Thu, 2 Jul 1998 20:47:22 -0700 (PDT) Received: from LOCALNAME ([12.65.130.126]) by mtiwmhc03.worldnet.att.net (InterMail v03.02.03 118 118 102) with SMTP id <19980703034611.OELS29455@LOCALNAME>; Fri, 3 Jul 1998 03:46:11 +0000 X-Sender: ebjr@postoffice.worldnet.att.net X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: BASWAPLIST@FOOTHILL.NET, boatanchors@theporch.com, glowbugs@piobaire.mines.uidaho.edu From: Sandy W5TVW Subject: GB> WTB: HT-44 and P/S Message-Id: <19980703034611.OELS29455@LOCALNAME> Date: Fri, 3 Jul 1998 03:46:11 +0000 Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Hello gang, Looking for a Hallicrafters HT-44 transmitter and matching power supply to go with the SX-117 receiver I aquired recently. Anybody have one out there somewhere sitting on the shelf unused? 73, E. V. Sandy Blaize, W5TVW "Boat Anchors collected, restored, repaired, traded and used!" 417 Ridgewood Drive Metairie, LA., 70001 ***Still looking for a Hallicrafters SR-75, **** *** TRC-10 transceiver, and an RAL receiver ****** From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jul 3 14:18:10 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id OAA09921 for ; Fri, 3 Jul 1998 14:18:07 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id OAA19226 for ; Fri, 3 Jul 1998 14:20:28 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA25466 for glowbugs-outgoing; Fri, 3 Jul 1998 10:59:19 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.xmission.com (mail.xmission.com [198.60.22.22]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id KAA25460 for ; Fri, 3 Jul 1998 10:59:17 -0700 (PDT) Received: from slc409h.modem.xmission.com (xmission.com) [166.70.2.155] by mail.xmission.com with esmtp (Exim 1.82 #2) id 0ysA6q-0002Rn-00; Fri, 3 Jul 1998 11:58:56 -0600 Message-ID: <359CC7AF.A674AAB8@xmission.com> Date: Fri, 03 Jul 1998 11:59:44 +0000 From: Dexter Francis Reply-To: cwest@xmission.com Organization: CWest Tube Sales X-Mailer: Mozilla 4.05 (Macintosh; I; PPC) MIME-Version: 1.0 To: Old Tube Radios , glowbugs@piobaire.mines.uidaho.edu, "baswaplist@foothill.net" Subject: GB> Tube Data pages References: <199807031250.HAA28750@sco.theporch.com> Content-Type: text/plain; charset=us-ascii; x-mac-type="54455854"; x-mac-creator="4D4F5353" Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Greetings all - After weeks of fussing and fiddling I've got the hang of Adobe Exchange, so the web site tube section is going back up with the addition of links to pdf files that are pages from the manufacturer's data books. Currently the "0's" page link is active. I'll be adding as fast as the scanner and available time will let me. BTW- if anyone has a book with data on the 0A5 or 0G3, I'd love to have a clean xerox copy, as my books here don't have them and I'd like them to be included. -df *** CWest - P.O. Box 22443 Salt Lake City, Utah 84122 *** Visit our Web Page @ http://www.xmission.com/~cwest From glowbugs-owner@piobaire.mines.uidaho.edu Fri Jul 3 19:41:17 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id TAA10181 for ; Fri, 3 Jul 1998 19:41:16 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id TAA00417 for ; Fri, 3 Jul 1998 19:43:40 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id QAA27582 for glowbugs-outgoing; Fri, 3 Jul 1998 16:25:17 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from okcforum.org (okcforum.org [206.30.124.5]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id QAA27577 for ; Fri, 3 Jul 1998 16:25:15 -0700 (PDT) Received: (from psykey@localhost) by okcforum.org (8.8.7/8.8.7) id SAA31240 for glowbugs@piobaire.mines.uidaho.edu; Fri, 3 Jul 1998 18:24:44 -0500 Date: Fri, 3 Jul 1998 18:24:44 -0500 From: Jim Glover Message-Id: <199807032324.SAA31240@okcforum.org> To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> guessing voltage ratings for caps Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I have an old HW-101 that probably has some mica caps going bad. I need to try replacing some, but the HW-101's manual doesn't specify the voltage rating of the capacitors. Does anyone have any suggestions about how I can determine or guess what voltage rating I'll need? Thanks! --Jim WB5UDE From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jul 4 00:18:32 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id AAA10401 for ; Sat, 4 Jul 1998 00:18:32 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id AAA09366 for ; Sat, 4 Jul 1998 00:20:59 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id VAA29144 for glowbugs-outgoing; Fri, 3 Jul 1998 21:04:01 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from imo30.mx.aol.com (imo30.mx.aol.com [198.81.17.74]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id VAA29139 for ; Fri, 3 Jul 1998 21:03:58 -0700 (PDT) From: MNHopkins@aol.com Received: from MNHopkins@aol.com by imo30.mx.aol.com (IMOv14_b1.1) id PNVUa26167 for ; Sat, 4 Jul 1998 00:02:29 -0400 (EDT) Message-ID: <2b9a34c1.359da957@aol.com> Date: Sat, 4 Jul 1998 00:02:29 EDT To: glowbugs@piobaire.mines.uidaho.edu Mime-Version: 1.0 Subject: GB> 1947 Blooper was CPO too Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit X-Mailer: AOL 3.0 16-bit for Windows sub 58 Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO My pals who build regenerative RXs and put them on the air without buffers or any isolation whatever steadfastly inisist that they "do not radiate any appreciable amount," despite the fact some of them deliver more power to the antenna than Chuck Adams' PA. OK, said I, there are many worse infractions around. But reading the December, 1947 QST tonite I saw a circuit that might help. W1FTX offered a two-tube regen that doubled as a Code Practce Oscillator. With that, our erstwhiles could spend some of their time practicing the code and maybe get as fast as Chuck Adams who, besides being the father of the QRP-L mailer, is said to be able to copy CW at 75 and FSK at 60 baud. The old QST circuit uses a 6J5 regenerative detector with a 3-30 uufd (as they said for picofarad back then) trimmer in line with the antenna. Regeneration is controlled by the modern throttle condenser (capaicitor) method a la Rockey et als and a fat old 6SN7GT gives two stages of audio when not in regeneration itself as a code oscillator. Plug in coils are offered for 2.5 to 32mc (of course), and the PSU uses a type 80 valve as the British would say of the thermonic emission rectifier which delivers an uplifting 300VDC from a separate chassis. There is a picture of a youth on the cover, back in those pre Novice days, tapping away on the thing and never knowing he was probably a bootlegger. 73 de ab5L, michael in dallas, student of Tecraft and International (ICM) ham products and mementoes of Six Meters' Golden Age: 1957-58 Michael Hopkins Box 226841 Dallas, TX 75222 MNHopkins@AOL.com From glowbugs-owner@piobaire.mines.uidaho.edu Sat Jul 4 23:02:30 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id XAA11523 for ; Sat, 4 Jul 1998 23:02:28 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id XAA12192 for ; Sat, 4 Jul 1998 23:05:13 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id TAA06574 for glowbugs-outgoing; Sat, 4 Jul 1998 19:45:13 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from m25.boston.juno.com (m25.boston.juno.com [205.231.100.187]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id TAA06569 for ; Sat, 4 Jul 1998 19:45:09 -0700 (PDT) Received: (from ne1s@juno.com) by m25.boston.juno.com (queuemail) id DHC2S2VF; Sat, 04 Jul 1998 22:43:52 EDT To: wmeara@erols.com Cc: glowbugs@piobaire.mines.uidaho.edu Date: Sat, 4 Jul 1998 22:31:42 -0400 Subject: Re: GB> Cool Frank Jones trick Message-ID: <19980704.224049.3262.0.NE1S@juno.com> References: <199807021049.GAA26384@smtp3.erols.com> X-Mailer: Juno 1.38 X-Juno-Line-Breaks: 0-19,22-25 From: ne1s@juno.com (Larry M Szendrei) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On Thu, 02 Jul 1998 10:46:59 -0400 Bill Meara writes: >Saw a Frank Jones article in an old CQ. Sort of an update on his >supergainer. In the IF he had one crystal filter in the first stage, >with >the regen taking place in the next IF stage. The crystal filter had >the >classic "phasing cap." Frank bent part of one of the rotor plates >out, so >if you wanted to short out the crystal you just turned the phasing >control >until the rotor made contact with the stator. This was the "phone" >position. I thought that was clever. >> >73 de N2CQR >Bill Meara, Falls Church, Virginia >wmeara@erols.com G-QRP #7965 >http://www.mindspring.com/~johnmb/billm.htm > > I have a 1930's vintage homebrew (not by me!) superhet that uses this same trick on the BFO variable condenser to turn off the BFO. I was similarly impressed. Larry NE1S _____________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail from Juno at http://www.juno.com Or call Juno at (800) 654-JUNO [654-5866] From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jul 5 09:34:13 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id JAA12065 for ; Sun, 5 Jul 1998 09:34:11 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id JAA21272 for ; Sun, 5 Jul 1998 09:37:03 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id FAA09670 for glowbugs-outgoing; Sun, 5 Jul 1998 05:59:58 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from ha1.rdc1.nj.home.com (siteadm@ha1.rdc1.nj.home.com [24.3.128.66]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id FAA09665 for ; Sun, 5 Jul 1998 05:59:55 -0700 (PDT) Received: from cc632587-a.vron1.nj.home.com ([24.3.148.51]) by ha1.rdc1.nj.home.com (Netscape Mail Server v2.02) with SMTP id AAA25500 for ; Sun, 5 Jul 1998 05:59:44 -0700 Reply-To: From: "David Newkirk" To: "Glowbugs List" Subject: RE: GB> Cool Frank Jones trick [Oscillator Safety] Date: Sun, 5 Jul 1998 08:59:18 -0400 Message-ID: <000001bda814$b8b62900$33940318@cc632587-a.vron1.nj.home.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0 In-Reply-To: <19980704.224049.3262.0.NE1S@juno.com> Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3110.3 Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Bill Meara, N2CQR, wrote: > The crystal filter had the > classic "phasing cap." Frank bent part of one of the rotor plates > out, so > if you wanted to short out the crystal you just turned the phasing > control > until the rotor made contact with the stator. This was the "phone" > position. and Larry Szendrei, NE1S, wrote: > I have a 1930's vintage homebrew (not by me!) superhet that uses this > same trick on the BFO variable condenser to turn off the BFO. I was > similarly impressed. Using a bent capacitor plate to turn off a oscillator is a cool bit of "Depression engineering" *if* no components, including the oscillator tube, are unduly stressed when the oscillator isn't oscillating. If the oscillator tube does not include a cathode bias resistor capable of biasing the tube to class A, or sufficiently high resistance in its screen and plate dc feeds such that neither the plate nor the screen draws excessive current when the tube isn't oscillating, it may draw destructively high current when not oscillating. This is so because the default oscillator-tube biasing approach was usually class C with a *grid leak* (a resistor between grid and the cathode, often connected between grid and ground and connected between grid and cathode through the cathode's dc connection to ground), a technique that can provide proper bias only as long as the tube is oscillating. It works like this: When the oscillatory voltage swing at the grid drives the grid positive, current flows in the dc circuit consisting of the grid-cathode diode and the grid leak. This *grid current*, flowing through the grid-leak resistor, develops the tube's bias voltage across the grid leak. Capacitance across the grid leak charges to hold the bias constant for the period of the RF waveform. The thing is, this works *only* when oscillator voltage is present to drive the grid positive. No oscillatory voltage, no bias. Without bias, the tube draws as much plate current (and screen current, if the tube is not a triode) as the resistance in its plate (and screen) circuits, and the impedance of its power supply, allow. Any oscillator design that stops oscillation by reducing feedback-loop gain in the presence of full electrode voltages (as short-circuiting the oscillator tuning capacitor does) must therefore be configured so the tube doesn't draw too much current (and the resistances in its plate and screen feeds don't dissipate too much power) when the tube isn't oscillating. Very likely, the BFO in Larry's superhet is a triode, and there's a voltage-dropping resistor in series with the oscillator plate supply line provides this protection. If the resistor's power rating is sufficiently high *and* the BFO tube draws no more than class A electrode currents with its tuning capacitor shorted, that circuit's method of stopping oscillation -- which, for simplicity's sake and the cost of a B+ switch during the Great Depression, would otherwise endanger the oscillator tube and other components -- is sound. As you'll see in detail when I get my GB website going, my particular glowbug "thing" is understanding and improving circuits of the past rather than just duplicating them. I'm particularly sensitive to the safety of vacuum tubes (all but a few of which are no longer produced) and crystals (which are fragile and expensive) -- not to mention the safety of the operator, which is paramount. Quite a few vintage circuits, especially transmitter circuits, can easily endanger, even quickly destroy, their tubes and other components under some operating and failure conditions; many vintage transmitter circuits are positively dangerous to modern crystals (and even many vintage crystals) under conditions just outside, and often inside, the limits of normal operating adjustments. As an example of this, a quick component-safety glance of Lew McCoy's Mighty Midget transmitter design (see it via N6EV's glowbugs page at http://www.qsl.net/n6ev/Glowbug.html) reveals a 1-watt, 10,000-ohm resistor -- the dropping resistor in the oscillator's B+ line -- that dissipates 1 W by design. (Even considering the circuit's low duty cycle, this is NG; that should be a 2 W resistor at least.) A quick operator-safety check of the same circuit reveals that final amplifier's LOADING capacitor will charge, in the absence of a low-dc-resistance external load, to close to 300 V because there's no pull-down resistor (or RF choke, which acts as a low-value pull-down resistor) across it. (Okay, a few hundred picofarads won't store much energy, but many electric-shock injuries occur as a result of the victim's reflex reaction to the shock and not the shock itself.) A quick radio-design glance at the same circuit reveals an oscillator configuration that likely oscillates only virtue of its tube's high mu. (The configuration is a common-anode circuit that isn't given a good, well-defined ac anode ground.) 73, Dave Newkirk, W9VES dpnewkirk@home.com From glowbugs-owner@piobaire.mines.uidaho.edu Sun Jul 5 13:19:52 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id NAA12252 for ; Sun, 5 Jul 1998 13:19:52 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id NAA20185 for ; Sun, 5 Jul 1998 13:22:47 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA10961 for glowbugs-outgoing; Sun, 5 Jul 1998 09:59:30 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from Rt66.com (mack.rt66.com [198.59.162.1]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA10956 for ; Sun, 5 Jul 1998 09:59:27 -0700 (PDT) From: msix@rt66.com Received: from localhost (msix@localhost) by Rt66.com (8.8.7/8.8.6) with SMTP id KAA11326 for ; Sun, 5 Jul 1998 10:56:50 -0600 (MDT) Date: Sun, 5 Jul 1998 10:56:50 -0600 (MDT) To: glowbugs@piobaire.mines.uidaho.edu Subject: RE: GB> Cool Frank Jones trick [Oscillator Safety] In-Reply-To: <000001bda814$b8b62900$33940318@cc632587-a.vron1.nj.home.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On Sun, 5 Jul 1998, David Newkirk wrote: Larry NE1S said: > > I have a 1930's vintage homebrew (not by me!) superhet that uses this > > same trick on the BFO variable condenser to turn off the BFO... Then Dave W9EVS said: > Using a bent capacitor plate to turn off a oscillator is a cool bit of > "Depression engineering" *if* no components, including the oscillator tube, > are unduly stressed when the oscillator isn't oscillating. If the oscillator > tube does not include a cathode bias resistor... Now I say: Yes. Most of the later BFO/VFOs include a resistor in the cathode or source, regardless of oscillator type. Some earlier ckts didn't. Purposes is to suppress harmonics and enhance stability, but also would protect the active device if tank shorted... 73 - John W7ZFB at msix@rt66.com 1400 Catron SE Albq, NM 87123 *********************************************************** * Homebrewer since 1947 CW BoatAnchors Norcal #930 * *********************************************************** Happy 4th... From glowbugs-owner@piobaire.mines.uidaho.edu Mon Jul 6 07:30:00 1998 Return-Path: Received: from smtp.WPI.EDU (root@smtp.WPI.EDU [130.215.24.62]) by blargh.wpi.edu (8.8.7/8.8.7) with ESMTP id HAA13146 for ; Mon, 6 Jul 1998 07:30:00 -0400 Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.1.Beta1/8.9.1.Beta1) with ESMTP id HAA32487 for ; Mon, 6 Jul 1998 07:33:08 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id EAA17014 for glowbugs-outgoing; Mon, 6 Jul 1998 04:10:51 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from smtp1.erols.com (smtp1.erols.com [207.172.3.234]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id EAA17009 for ; Mon, 6 Jul 1998 04:10:48 -0700 (PDT) Received: from LOCALNAME (207-172-119-219.s219.tnt2.brd.erols.com [207.172.119.219]) by smtp1.erols.com (8.8.8/8.8.5) with SMTP id HAA09103; Mon, 6 Jul 1998 07:10:40 -0400 (EDT) Message-Id: <199807061110.HAA09103@smtp1.erols.com> X-Sender: wmeara@pop.erols.com X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Mon, 06 Jul 1998 11:07:41 -0400 To: glowbugs@piobaire.mines.uidaho.edu, homebrew@qth.net From: Bill Meara Subject: GB> Mighty Midget Update Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I put the Mighty Midget RX into the old Heathkit Sixer cabinet. Looks great but I found that the cabinet seriously detuned my BFO. I had to put a hole in the top of the box so that could acccess the BFO's slug-tuned coil. I used a slightly widened plastic nut starter to do the tuning. Worked great. SSB sounds FB! Rigged up a 3PDT relay box to handle TR switchover with the DX60B. Works fine, but I had planned on muting the RX by simply lifting the cathode of the RF AMP off ground on transmit (actually the ground side of the RF gain control). This succeeeds in turning the RF gain way down, but it does not silence the RX. How about just lifting the cathode of the AF amp off ground at the same time? Any other suggestions for muting? Possible future inporvements: -- Of course the filter. But I'm really tempted to leave it as is (455 kc transformers only - a bit broad). Anyone have experience using ceramic resonators as filters at 455 kc? -- Tuning mechanism. A 6-1 reduction drive would make tuning easier, but I don't have one in my junkbox (hint! hint!) and the current arrangement (direct tuning of cap) is OK. 73 de N2CQR Bill Meara, Falls Church, Virginia wmeara@erols.com G-QRP #7965 http://www.mindspring.com/~johnmb/billm.htm http://www.homeusers.prestel.co.uk/g3ycc/n2cqr_1.htm From glowbugs-owner@piobaire.mines.uidaho.edu Sat May 2 10:53:45 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.8.8) with ESMTP id KAA12992 for ; Sat, 2 May 1998 10:53:45 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id HAA04840 for glowbugs-outgoing; Sat, 2 May 1998 07:23:01 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from admin.aurora.edu (admin.aurora.edu [192.203.224.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id HAA04831 for ; Sat, 2 May 1998 07:22:58 -0700 (PDT) Received: from localhost (broehrig@localhost) by admin.aurora.edu (8.8.8/8.8.8) with SMTP id JAA19131; Sat, 2 May 1998 09:14:39 -0500 Date: Sat, 2 May 1998 09:14:38 -0500 (CDT) From: Bob Roehrig To: Ken Gordon cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Glowbugs and QSK... In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On Fri, 1 May 1998, Ken Gordon wrote: > Indeed! Has anyone here remembered how to "hotrod" a relay? > > I tried it several times: the idea is to use something on the order of a > 350 VDC powersupply for a 12 VDC relay, with a series dropping resistor so > that when the key is down, the current through the relay is no more than > the rated current. Supposedly...what this does is make the relay close > much faster. That's how a TTY loop circuit works. Typically use around a 120VDC supply and a 2K resistor, even though the polar relays or selector magnets will pull in at less than 28V. Using a diode across the coil directly will slow down the release. best way is to put the diode across the combination of the relay coil and its dropping resistor. (This was not done in TTY circuits - they usually used series RC "networks" across contacts rather than anything across the coils). "Nostalgia is a thing of the past" E-mail broehrig@admin.aurora.edu 73 de Bob, K9EUI CIS: Data / Telecom Aurora University, Aurora, IL 630-844-4898 Fax 630-844-5530 From glowbugs-owner@piobaire.mines.uidaho.edu Sat May 2 13:01:51 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.8.8) with ESMTP id NAA27884 for ; Sat, 2 May 1998 13:01:51 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA06360 for glowbugs-outgoing; Sat, 2 May 1998 09:35:07 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from alyssa.iaxs.net (root@alyssa.iaxs.net [205.164.100.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA06355 for ; Sat, 2 May 1998 09:35:04 -0700 (PDT) Received: from citrus.iaxs.net (bill@citrus.iaxs.net [206.43.66.3]) by alyssa.iaxs.net (8.8.8/iaxs-19971103) with ESMTP id LAA16378; Sat, 2 May 1998 11:34:26 -0500 (CDT) Received: (from bill@localhost) by citrus.iaxs.net (8.8.8/iaxs-citrus-19971103) id LAA08029; Sat, 2 May 1998 11:34:23 -0500 (CDT) Date: Sat, 2 May 1998 11:34:23 -0500 (CDT) From: Bill Hawkins Message-Id: <199805021634.LAA08029@citrus.iaxs.net> To: broehrig@admin.aurora.edu, keng@uidaho.edu Subject: Re: GB> Glowbugs and QSK... Cc: glowbugs@piobaire.mines.uidaho.edu Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Well, lessee, the thing that makes the relay move is the magnetic field. That's proportional to current. The coil has inductance (that varies as the armature moves). The fastest way to establish current is to use a current source, approximated by a large resistor and relatively high voltage. Then you'd want to reduce the armature travel distance (and time) by adjusting/bending things to get a small magnetic gap and a small contact gap. Low spring force would be nice, but you'll need it for the release. On the release, you need to dump the current quickly and use the spring force to pull the armature back to the open position. If the circuit is just opened, the inductor tries to maintain current flow and the voltage rises until something arcs. Using a back diode will stop the arc, but it maintains the current flow and holds the armature closed. Bob says TTY used RC across contacts. So did IBM in the old 700 series VT computer gear. R was about the DC coil resistance, and C about 0.1 microfarad. Don't know how the values are picked, but there's only two of them. A resistance box and a cap box and a scope across the contacts would let you tune the RC values for fast release - if you are really serious about fast QSK, that is. The original RC values were probably chosen to minimize arcing and maximize contact life. Just speculation, but the use of RC to let the circuit oscillate in a damped wave probably reduces the magnetic field holding the armature faster than using a back diode and a resistor, for LR decay. Then again, maybe not. Caps were cheaper than diodes in those days. Regards, Bill Hawkins From glowbugs-owner@piobaire.mines.uidaho.edu Sat May 2 16:22:56 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.8.8) with ESMTP id QAA13141 for ; Sat, 2 May 1998 16:22:56 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA07977 for glowbugs-outgoing; Sat, 2 May 1998 12:59:11 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mtigwc04.worldnet.att.net (mtigwc04.worldnet.att.net [204.127.131.33]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id MAA07972 for ; Sat, 2 May 1998 12:59:07 -0700 (PDT) Received: from LOCALNAME ([12.65.146.46]) by mtigwc04.worldnet.att.net (post.office MTA v2.0 0613 ) with SMTP id AAB22149; Sat, 2 May 1998 19:58:11 +0000 X-Sender: ebjr@postoffice.worldnet.att.net X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: boatanchors@theporch.com, glowbugs@piobaire.mines.uidaho.edu From: Sandy W5TVW Subject: GB> Baton Rouge, LA hamfest Date: Sat, 2 May 1998 19:58:11 +0000 Message-ID: <19980502195806.AAB22149@LOCALNAME> Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Went to Baton Rouge today with Joe, K5HLR. Ran into a few Glowbuggers- Boatanchor people there. The pickin's were very slim! Saw an R-392 (It followed Keith KK5FE home!) There was a very scruffy NC-98 there overpriced at $110. A Hallicrafters S-120 (didn't ask price!) Not much else except some craft stuff, and lots of computer odds-n-ends. Many, many empty tables! I'd say it was about as poor a flea market showing as I've seen there. I came home with nearly all my money! 73, E. V. Sandy Blaize, W5TVW "Boat Anchors collected, restored, repaired, traded and used!" 417 Ridgewood Drive Metairie, LA., 70001 ***Again looking for a Hallicrafters SR-75 **** **860 Hartley 'ECO' construction "on hold"**** *** Looking for a TRC-10 transceiver ****** *** Looking for an RAL receiver *********** From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 3 00:16:54 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.8.8) with ESMTP id AAA24736 for ; Sun, 3 May 1998 00:16:54 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id UAA11224 for glowbugs-outgoing; Sat, 2 May 1998 20:49:47 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id UAA11214; Sat, 2 May 1998 20:49:33 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Sat, 2 May 1998 20:49:32 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: Doug cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Glowbugs and QSK... In-Reply-To: <354BC990.4EBC01B9@alpinet.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO My sincere thanks to everyone who responded to my original post on "hotrodding" a relay. Your suggestions were VERY practical and all of them work. Thanks again!!!!! Ken W7EKB On Sat, 2 May 1998, Doug wrote: > Hi Ken.....try it the way the Phone company did it back when we had > relays in about everything for the business. Use a separate source, fed > through a diode to the coil. Include sufficient series resistance to allow > some current to flow in the coil at all times, just not quite enough to cause > the contacts to become light in the released position. This current is called > the "soak" current, and is designed to bring the relay near to the operating > point, reducing the R/L time constant in the core and causing it to switch > to the opposite state much more quickly. Just dont use too much current > that'd keep the relay from releasing quickly. > > I've tried this in a QSK configuration and it really rocks.....good clean > switching and falloff time. > > Have fun > > Doug, K7YD > > > Ken Gordon wrote: > > > On Fri, 1 May 1998, DEVCOM wrote: > > > > > I used to run QSK with relays with a homebrew 6C4/6DQ6 transmitter with a > > > radio shack SW receiver and, like you say, it was great! Works even better > > > than VOX (which is also good for hearing someone trying to break) and full > > > duplex on VHF, because between each character you can hear the slightest bit > > > of interference, breakers, the other station doubling with you, etc. > > > Amazing how many thousands of "cycles" a mechanical device like that can > > > survive.. > > > > Indeed! Has anyone here remembered how to "hotrod" a relay? > > > > I tried it several times: the idea is to use something on the order of a > > 350 VDC powersupply for a 12 VDC relay, with a series dropping resistor so > > that when the key is down, the current through the relay is no more than > > the rated current. Supposedly...what this does is make the relay close > > much faster. > > > > However, all I ever accomplished by doing this was burn up relays. They > > surely keyed fast....for a while. I tried a clamping-diode but that > > didn't help either. I abandoned the idea since I had run out of time to > > devote to it. > > > > Now, I wonder... > > > > Ken W7EKB > > > > > > From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 3 11:46:08 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.8.8) with ESMTP id LAA07394 for ; Sun, 3 May 1998 11:46:07 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id IAA18600 for glowbugs-outgoing; Sun, 3 May 1998 08:21:29 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from admin.aurora.edu (admin.aurora.edu [192.203.224.2]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id IAA18591 for ; Sun, 3 May 1998 08:21:25 -0700 (PDT) Received: from localhost (broehrig@localhost) by admin.aurora.edu (8.8.8/8.8.8) with SMTP id KAA28601; Sun, 3 May 1998 10:12:33 -0500 Date: Sun, 3 May 1998 10:12:33 -0500 (CDT) From: Bob Roehrig To: Bill Hawkins cc: keng@uidaho.edu, glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Glowbugs and QSK... In-Reply-To: <199805021634.LAA08029@citrus.iaxs.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On Sat, 2 May 1998, Bill Hawkins wrote: > Bob says TTY used RC across contacts. So did IBM in the old 700 series > VT computer gear. R was about the DC coil resistance, and C about 0.1 > microfarad. Don't know how the values are picked, but there's only two > of them. That's about right I think. The TTY (and other Western Electric) circuits used a couple different "networks". The most popular one was a 185A, if I remember correctly, and as I recall it had a resistor of 470 to 560 ohms and a cap of .1 to .15uf. "Nostalgia is a thing of the past" E-mail broehrig@admin.aurora.edu 73 de Bob, K9EUI CIS: Data / Telecom Aurora University, Aurora, IL 630-844-4898 Fax 630-844-5530 From glowbugs-owner@piobaire.mines.uidaho.edu Sun May 3 22:07:26 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.8.8) with ESMTP id WAA13851 for ; Sun, 3 May 1998 22:07:25 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id SAA24010 for glowbugs-outgoing; Sun, 3 May 1998 18:41:58 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id SAA24005 for ; Sun, 3 May 1998 18:41:55 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Sun, 3 May 1998 18:41:55 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> A keying relay... Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Well, I found a "Keying Relay M-7470182, Struthers-Dunn, Inc., Type 78CCA101, 28VDC" I think it is the one which goes in the ART-13. Looks nearly new. Dunno where I got it. Every contact set inside is adjustable as is the armature tension and spacing. Seems too big and stiff to key very fast. It has an external vacumn relay which was probably used to key the antenna. Does anyone have a wiring diagram for this thing ? I mean the Cinch-Jones looking thing on the bottom? Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Mon May 4 00:06:16 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.8.8) with ESMTP id AAA17886 for ; Mon, 4 May 1998 00:06:15 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id UAA24985 for glowbugs-outgoing; Sun, 3 May 1998 20:45:30 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from camel7.mindspring.com (camel7.mindspring.com [207.69.200.57]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id UAA24980 for ; Sun, 3 May 1998 20:45:26 -0700 (PDT) Received: from sorcery-2 (user-38lc2rt.dialup.mindspring.com [209.86.11.125]) by camel7.mindspring.com (8.8.5/8.8.5) with SMTP id XAA07143 for ; Sun, 3 May 1998 23:44:45 -0400 (EDT) Message-Id: <3.0.5.32.19980503225824.00813440@pop.pipeline.com> X-Sender: lrware@pop.pipeline.com X-Mailer: QUALCOMM Windows Eudora Pro Version 3.0.5 (32) Date: Sun, 03 May 1998 22:58:24 +0000 To: glowbugs@piobaire.mines.uidaho.edu From: "Lawrence R. Ware" Subject: GB> Box of glowbug type parts Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Good evening folks! Been a while since I posted here, but since I have this box of NOS Bud and Johnson variable caps sitting around I thought I'd see if any of the glowbuggers needed some for home-brew projects. I have: 4 ea. BUD LC-1847 3 gang tinymite 25 pf/section variables. 6 ea. Johnson 149-2 ? variables. 4 ea. Johnson 160-311 2.9 - 19.6 pf variables. 4 ea. Johnson 160-203 1.5 - 3.1 pf variables. 20 total all NOS, 19 NIB. One of you homebrewers want to take the whole lot for $20 + $4 for priority mail? If I get a lot of requests, winner will be picked based on best idea for using them.... :-) -Larry # Larry Ware # Admirer, Collector, Restorer of National Radio Company # receivers and other artifacts. # Orlando, Florida # lrware@pipeline.com From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 12:43:04 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id MAA14967 for ; Tue, 5 May 1998 12:43:04 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA27485 for glowbugs-outgoing; Tue, 5 May 1998 09:07:11 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from relay.mnsinc.com (relay1.mnsinc.com [206.55.3.25]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA27476 for ; Tue, 5 May 1998 09:07:06 -0700 (PDT) Received: from COMPUTER (bry.mnsinc.com [206.239.150.65]) by relay.mnsinc.com (8.8.5/8.7.3) with SMTP id MAA23608; Tue, 5 May 1998 12:05:05 -0400 (EDT) Message-Id: <199805051605.MAA23608@relay.mnsinc.com> Comments: Authenticated sender is From: "Brian Carling" Organization: http://www.mnsinc.com/bry/ To: raylarue@gte.net, Boatanchors-qth , glowbugs@piobaire.mines.uidaho.edu Date: Tue, 5 May 1998 12:04:27 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? Reply-to: bry@mnsinc.com Priority: normal In-reply-to: <354BDCAD.53E4F180@gte.net> X-mailer: Pegasus Mail for Windows (v2.54) Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Now folks here is an idea that may have some validity! I don't like to sign as AF4K/BA because it sounds like I am in some foreign country!! HOW ABOUT instead of calling CQ we call QBA QBA QBA de AF4K AF4K AF4K Meaning: CQ CQ CQ (I am using a BA and would like to work others with old tube gear!) and how about insetad of a QRZ? we would send QBA? QBA? QBA? Meaning: 'Who is calling me with a Boatanchor?" I think this has some merit! What do YOU folks think??? On 2 May 98 at 22:55, Ray wrote: > During field day, members of AReU (East Tampa), are planning on > firing up a couple classic and antique rigs. It will be a great > opportunity for new hams to see a little of our "roots" in operation > and for old hams to be reminded of some of the enjoyable times in > the past. One of our rigs is a compact one tube, WW 2 spy rig. It > is xtal controlled and runs only about 10 watts. > > Is there a "Q" signal which could be transmitted along with ones > call, to indicate the use of an classic/antique? I was thinking > like QBA or QAT? I think if I heard such an ID among all the other > QRM, I would try harder to make the contact. If not, anyone game > for coining one? 73, Ray, W4BYG > > > --- > Submissions boatanchors@qth.net > **************************************************** *** 73 from Radio AF4K/G3XLQ Gaithersburg, MD USA * ** E-mail to: bry@mnsinc.com * *** ICQ 6124470 *** ** http://www.mnsinc.com/bry/ * **************************************************** AM International #1024, TENTEN #13582. GRID FM19. Rigs: Valiant, DX-60/HG-10, FT-840, TM-261A, Harvey Wells Bandmaster, Drake 2 C. TEN-TEN #13582, DXCC #17763, Bicentennial WAS From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 13:26:15 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id NAA27520 for ; Tue, 5 May 1998 13:26:14 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA28408 for glowbugs-outgoing; Tue, 5 May 1998 09:54:02 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id JAA28387; Tue, 5 May 1998 09:53:15 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Tue, 5 May 1998 09:53:15 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: Brian Carling cc: raylarue@gte.net, Boatanchors-qth , glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? In-Reply-To: <199805051605.MAA23608@relay.mnsinc.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Excellent idea, but what are the REAL meanings for QBA and QBA? They DO exist, you know. Probably have not been used in dogs years, but they are someone's list somewhere. Say, Bry, I worked W7ZFB last night on 7051 or so. He was 599 into Moscow despite a) QRN (a storm building up), and b) his 40 watts from the Elmac pair. This about 0300. He had much worse QRN than myself. Even so, he didn't have a LOT of trouble hearing my 50 watts until just before we signed. Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 14:22:23 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id OAA16254 for ; Tue, 5 May 1998 14:22:22 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA29922 for glowbugs-outgoing; Tue, 5 May 1998 10:48:36 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.xmission.com (mail.xmission.com [198.60.22.22]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id KAA29917 for ; Tue, 5 May 1998 10:48:32 -0700 (PDT) Received: from slc282h.modem.xmission.com (xmission.com) [166.70.2.28] by mail.xmission.com with esmtp (Exim 1.82 #2) id 0yWlp6-0004tQ-00; Tue, 5 May 1998 11:48:12 -0600 Message-ID: <354F51FB.F4BAD285@xmission.com> Date: Tue, 05 May 1998 11:53:03 -0600 From: Dexter Francis Reply-To: cwest@xmission.com Organization: CWest Tube Sales X-Mailer: Mozilla 4.05 (Macintosh; I; PPC) MIME-Version: 1.0 To: Ken Gordon , glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? References: Content-Type: text/plain; charset=us-ascii; x-mac-type="54455854"; x-mac-creator="4D4F5353" Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I have a copy of "Electronic Communication" by Shrader, that has a five page list of Q Signals in it, that goes from QRA to QUU. There are no Q signals listed that start with anything before QR. Here are a few that I find particularly fun: QRD - Is my keying defective? These two "Ferrengi" Q signals from a bygone era... QSJ - What is the charge to be collected per word to_______, including internal telegraph charges? QSP - Will your relay to_______free of charge? QUA - Have you news of (station ID)? QUI - Are your navigation lights working? [Lights on - No one home?!...;-)] And this one, for pure power of compaction... QUQ - Shall I train my searchlight nearly vertical on a cloud, occulting if possible and, if your aircraft is seen, deflect the beam up-wind on on the water or land, to facilitate your landing? -df *** CWest - P.O. Box 22443 Salt Lake City, Utah 84122 *** *Visit our Web Page @ http://www.xmission.com/~cwest* From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 16:13:35 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id QAA13607 for ; Tue, 5 May 1998 16:13:34 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA02294 for glowbugs-outgoing; Tue, 5 May 1998 12:38:56 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from seedlab1.cropsci.ncsu.edu (seedlab1.cropsci.ncsu.edu [152.1.88.4]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id MAA02284 for ; Tue, 5 May 1998 12:38:51 -0700 (PDT) Received: (from rdkeys@localhost) by seedlab1.cropsci.ncsu.edu (8.8.7/8.8.7) id PAA12126; Tue, 5 May 1998 15:34:29 -0400 (EDT) From: "Robert D. Keys" Message-Id: <199805051934.PAA12126@seedlab1.cropsci.ncsu.edu> Subject: Re: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? In-Reply-To: <354F51FB.F4BAD285@xmission.com> from Dexter Francis at "May 5, 98 11:53:03 am" To: cwest@xmission.com Date: Tue, 5 May 1998 15:34:29 -0400 (EDT) Cc: keng@uidaho.edu, glowbugs@piobaire.mines.uidaho.edu X-Mailer: ELM [version 2.4ME+ PL32 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > I have a copy of "Electronic Communication" by Shrader, that has a five > page list of Q Signals in it, that goes from QRA to QUU. There are no Q > signals listed that start with anything before QR. That is a good study book. Not as good as Noll, but generally lots of good info, if you get a 3rd edition. The latest one get scarce on CW stuff, if memory serves me correctly. There are reserved sections that are in the ITU designations. I think the ACM Army pub details what is open. That is the definitive list other than the ITU pubs. Someone had it transcribed in, at one time, and I have transcribed about half of it in.... someday to finish. > Here are a few that I find particularly fun: > > QRD - Is my keying defective? > > These two "Ferrengi" Q signals from a bygone era... > > QSJ - What is the charge to be collected per word to_______, including > internal telegraph charges? That might still apply, but not in ham circuits. > QSP - Will your relay to_______free of charge? That definitely still applies in traffic handling. I use that quite often. It is also used in conversational mode, where you want to just relay indirectly something to a buddy. In round tables, where someone is not around, yet, it is useful, if you have to leave for a while and you expect the buddy to show up. > QUA - Have you news of (station ID)? That is used occasionally, especially among friends. > QUI - Are your navigation lights working? [Lights on - No one > home?!...;-)] The air sigs are not used much anymore..... > And this one, for pure power of compaction... > > QUQ - Shall I train my searchlight nearly vertical on a cloud, occulting > if possible and, if your aircraft is seen, > deflect the beam up-wind on on the water or land, to > facilitate your landing? There are several of somewhat dense compaction, depending upon what your particular originating or replying use is. 73/Bob/NA4G From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 16:33:02 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id QAA10476 for ; Tue, 5 May 1998 16:33:01 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id NAA02575 for glowbugs-outgoing; Tue, 5 May 1998 13:01:16 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from getnet.com (gn2.getnet.com [207.254.1.12]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id NAA02570 for ; Tue, 5 May 1998 13:01:11 -0700 (PDT) Received: from localhost (jackmead@localhost) by getnet.com (8.8.8/8.8.7) with SMTP id NAA08324; Tue, 5 May 1998 13:00:07 -0700 (MST) Date: Tue, 5 May 1998 13:00:07 -0700 (MST) From: Jack Meadows To: Brian Carling cc: raylarue@gte.net, Boatanchors-qth , glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? In-Reply-To: <199805051605.MAA23608@relay.mnsinc.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I like QBA, it has a nice rhythm! Let's do it! Best regards, Jack W7QQQ 813 xtal osc. 6dq6 xtal osc. SB220 QRG cleaner On Tue, 5 May 1998, Brian Carling wrote: > Now folks here is an idea that may have some validity! > > I don't like to sign as AF4K/BA > because it sounds like I am in some foreign country!! > > HOW ABOUT instead of calling CQ we call > QBA QBA QBA de AF4K AF4K AF4K > > Meaning: CQ CQ CQ (I am using a BA and would like to work others with > old tube gear!) > > and how about insetad of a QRZ? we would send QBA? QBA? QBA? > > Meaning: 'Who is calling me with a Boatanchor?" > > I think this has some merit! What do YOU folks think??? > > > **************************************************** > *** 73 from Radio AF4K/G3XLQ Gaithersburg, MD USA * > ** E-mail to: bry@mnsinc.com * > *** ICQ 6124470 *** > ** http://www.mnsinc.com/bry/ * > **************************************************** > AM International #1024, TENTEN #13582. GRID FM19. Rigs: Valiant, DX-60/HG-10, FT-840, TM-261A, Harvey Wells Bandmaster, Drake 2 > C. > TEN-TEN #13582, DXCC #17763, Bicentennial WAS > From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 16:58:02 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id QAA30551 for ; Tue, 5 May 1998 16:58:01 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id NAA03328 for glowbugs-outgoing; Tue, 5 May 1998 13:26:10 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from relay1.Hawaii.edu (root@relay1.hawaii.edu [128.171.3.53]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id NAA03323 for ; Tue, 5 May 1998 13:26:04 -0700 (PDT) Received: from uhunix5.its.Hawaii.Edu ([128.171.44.55]) by relay1.Hawaii.Edu with SMTP id <148634(10)>; Tue, 5 May 1998 10:25:33 -1000 Received: from localhost by uhunix5.its.Hawaii.Edu with SMTP id <188932(6)>; Tue, 5 May 1998 10:25:25 -1000 Date: Tue, 5 May 1998 10:25:20 -1000 From: Jeffrey Herman X-Sender: jeffreyh@uhunix5 To: Ken Gordon cc: Brian Carling , raylarue@gte.net, Boatanchors-qth , glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Hey Gang, why don't we all meet on one BA list instead of two of 'em; I see in the header some of you are residing on the ba@qth.net list. I believe the list boatanchors@listserve.tempe.gov, with its 460 subscribers, might be the place to hang out. It would be nice to have all the BA people in one location so we don't miss any gossup, err, good stuff. 73, Jeff KH2PZ From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 17:33:52 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id RAA16352 for ; Tue, 5 May 1998 17:33:52 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id NAA03964 for glowbugs-outgoing; Tue, 5 May 1998 13:57:22 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mtigwc05.worldnet.att.net (mtigwc05.worldnet.att.net [204.127.131.35]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id NAA03959 for ; Tue, 5 May 1998 13:57:19 -0700 (PDT) Received: from LOCALNAME ([12.65.147.100]) by mtigwc05.worldnet.att.net (post.office MTA v2.0 0613 ) with SMTP id AAB23093; Tue, 5 May 1998 20:56:15 +0000 X-Sender: ebjr@postoffice.worldnet.att.net X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: Jack Meadows , glowbugs@piobaire.mines.uidaho.edu From: Sandy W5TVW Subject: Re: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? Date: Tue, 5 May 1998 20:56:15 +0000 Message-ID: <19980505205610.AAB23093@LOCALNAME> Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO At 01:00 PM 5/5/98 -0700, you wrote: >I like QBA, it has a nice rhythm! >Let's do it! > >Best regards, >Jack W7QQQ >813 xtal osc. >6dq6 xtal osc. >SB220 QRG cleaner > According to my old ACP131, "QBA" means: What is the horizontal visibility at........? (place) Answer: The horizontal visibility at....(place) at.....hours is......(distance). Now QGA and QGB has no entry. That is it is in the book, but the meaning/definition is blank. My ACP131 is dated July 1953. 73, E. V. Sandy Blaize, W5TVW "Boat Anchors collected, restored, repaired, traded and used!" 417 Ridgewood Drive Metairie, LA., 70001 ***Again looking for a Hallicrafters SR-75 **** **860 Hartley 'ECO' construction "on hold"**** *** Looking for a TRC-10 transceiver ****** *** Looking for an RAL receiver *********** From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 17:57:03 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id RAA09751 for ; Tue, 5 May 1998 17:57:01 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id OAA04252 for glowbugs-outgoing; Tue, 5 May 1998 14:19:12 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from radiate.indy.net (radiate.indy.net [199.3.65.253]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id OAA04247 for ; Tue, 5 May 1998 14:19:08 -0700 (PDT) Received: from indy3.indy.net (root@indy3.indy.net [199.3.65.14]) by radiate.indy.net (8.8.7/8.8.7) with ESMTP id PAA04976; Tue, 5 May 1998 15:44:22 -0500 (EST) Received: from localhost (rbarmore@localhost [127.0.0.1]) by indy3.indy.net (8.8.7/8.8.7) with SMTP id PAA12594; Tue, 5 May 1998 15:44:20 -0500 (EST) Date: Tue, 5 May 1998 15:44:19 -0500 (EST) From: "Roberta J. Barmore" X-Sender: rbarmore@indy3 To: Brian Carling cc: raylarue@gte.net, Boatanchors-qth , glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? In-Reply-To: <199805051605.MAA23608@relay.mnsinc.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Hi! The only problem I have with "QBA" is that it tends to restrict one's preaching to the choir! Folks like me, who run low power and aren't on the air very often, tend to want to work anybody we can find--and for that, CQ (called or, more often, answered) works just fine. Most of 'em get a kick out of hearing "rig hr one 6L6!" --And the ones that don't usually ask what it is. (One fellow in TX even wrote for the schematic!) (BTW, the mil Z-sig ZBA means "cause of delay is _____." It sort of applies, if we take QBA to be similar. Stick with the Q-sig--lest you receive a reply from a South African comm'l station! My favorite Z-sig is ZAO: "Can't understand voice. Use telegraphy." H'mmm, wonder if W9ZAO is taken? And ZAB could be useful: "Your speed key improperly adjusted." Not that we ever hear *that* on the bands). 73, --Bobbi KB9GKX "RJ" rbarmore@indy.net Roberta J. (Bobbi) Barmore FISTS #3388 * G-QRP #10001 * ARRL * RSGB * WIA Appreciator Of Vacuum-Tube Ham Gear and Vintage Keys From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 18:18:13 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id SAA08933 for ; Tue, 5 May 1998 18:18:12 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id OAA04620 for glowbugs-outgoing; Tue, 5 May 1998 14:44:01 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from pacs01.infoave.net (20C00D02@pacs01.InfoAve.Net [165.166.0.11]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id OAA04613 for ; Tue, 5 May 1998 14:43:54 -0700 (PDT) Received: from tetrode ("port 3472"@[149.149.42.10]) by InfoAve.Net (PMDF V5.1-10 #23426) with SMTP id <01IWOLF1ZTZG8ZE3FS@InfoAve.Net> for glowbugs@piobaire.mines.uidaho.edu; Tue, 5 May 1998 17:43:20 EDT Date: Tue, 05 May 1998 16:47:23 -0500 From: Conard Murray WS4S Subject: Re: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? To: Sandy W5TVW , Jack Meadows , glowbugs@piobaire.mines.uidaho.edu Message-id: <001401bd786f$64b79de0$0a2a9595@tetrode.ece.tntech.edu> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 4.72.2106.4 Content-type: text/plain; charset="iso-8859-1" Content-transfer-encoding: 7bit X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V4.72.2106.4 X-Priority: 3 Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Sandy said: ---> According to my old ACP131, "QBA" means: What is the horizontal >visibility >at........? (place) > Answer: The horizontal visibility at....(place) at.....hours >is......(distance). So, can we reinterpret this to mean : QBA?: Can you see across the room for all the old radio junk piled up in your shack? answered by: QBA1: stacked up one foot, visibility ok. QBA2: stacked up 2 feet, where are the wall outlets? and so on until: QBA8: I can't get out of the shack. Call the rescue squad caving and extrication team. ZUT! de Conard, WS4S From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 18:51:52 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id SAA25934 for ; Tue, 5 May 1998 18:51:51 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id PAA05071 for glowbugs-outgoing; Tue, 5 May 1998 15:12:57 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from dfw-ix5.ix.netcom.com (dfw-ix5.ix.netcom.com [206.214.98.5]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id PAA05066 for ; Tue, 5 May 1998 15:12:54 -0700 (PDT) Received: (from smap@localhost) by dfw-ix5.ix.netcom.com (8.8.4/8.8.4) id RAA06622; Tue, 5 May 1998 17:11:50 -0500 (CDT) Date: Tue, 5 May 1998 17:11:50 -0500 (CDT) Message-Id: <199805052211.RAA06622@dfw-ix5.ix.netcom.com> Received: from val-ca3-04.ix.netcom.com(206.217.130.68) by dfw-ix5.ix.netcom.com via smap (V1.3) id rma006583; Tue May 5 17:11:14 1998 From: mjsilva@ix.netcom.com (michael silva) Subject: Re: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? To: glowbugs@piobaire.mines.uidaho.edu To: boatanchors@listserve.tempe.gov Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Brian wrote: > >Now folks here is an idea that may have some validity! > >I don't like to sign as AF4K/BA >because it sounds like I am in some foreign country!! > >HOW ABOUT instead of calling CQ we call >QBA QBA QBA de AF4K AF4K AF4K I've wanted to convey the same information myself. Since it's been pointed out that QBA is already defined, how about QVT? Not defined AFAIK; covers commercial, military and homebrew, big and small, as long as it glows; and has a fabulous rhythm. Plus people will answer Bobbi's CQs just to find out what it means! 73, Mike, KK6GM From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 20:18:54 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id UAA22743 for ; Tue, 5 May 1998 20:18:53 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id QAA06004 for glowbugs-outgoing; Tue, 5 May 1998 16:52:00 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id QAA05999 for ; Tue, 5 May 1998 16:51:54 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Tue, 5 May 1998 16:51:54 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? In-Reply-To: <199805052211.RAA06622@dfw-ix5.ix.netcom.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I thought I once had a list of "Q" and "Z" signals which ran from QAA/ZAA through QZZ/ZZZ. Have they all gone away, like CW in the Coast Guard!?!?!?!?!?! Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 20:18:57 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id UAA16720 for ; Tue, 5 May 1998 20:18:56 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id QAA06016 for glowbugs-outgoing; Tue, 5 May 1998 16:52:37 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id QAA06011 for ; Tue, 5 May 1998 16:52:34 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Tue, 5 May 1998 16:52:33 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> RE: Q and Z sigs... Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I have a scanner, if that would help. Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 20:43:04 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id UAA26158 for ; Tue, 5 May 1998 20:43:03 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id RAA06369 for glowbugs-outgoing; Tue, 5 May 1998 17:15:30 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mead.wanet.net (mead.wanet.net [205.229.176.135]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id RAA06364 for ; Tue, 5 May 1998 17:15:26 -0700 (PDT) Received: from LOCALNAME (d205229186048.socal.wanet.com [205.229.186.48]) by mead.wanet.net (8.8.7/8.8.7) with SMTP id RAA12094 for ; Tue, 5 May 1998 17:14:48 -0700 (PDT) Date: Tue, 5 May 1998 17:14:48 -0700 (PDT) Message-Id: <3.0.16.19980505171033.69377b82@SOCAL.WANet.com> X-Sender: k6qq@SOCAL.WANet.com X-Mailer: Windows Eudora Pro Version 3.0 (16) To: glowbugs@piobaire.mines.uidaho.edu From: John Moriarity Subject: Re: GB> Re: [BoatAnchors] "Q" signals Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Be careful when making up Q signals. According to an article I read by Kenneth Brown, G0PSW, there are Q signals before QR that (were?) used by the British Army. For example, QAU meant "I am waterlogged". My special favorite is QGG, meaning "send the pony by the next train". 73, John, K6QQ From glowbugs-owner@piobaire.mines.uidaho.edu Tue May 5 22:55:25 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id WAA09732 for ; Tue, 5 May 1998 22:55:25 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id TAA07715 for glowbugs-outgoing; Tue, 5 May 1998 19:23:52 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from main.aeneas.net (root@main.aeneas.net [207.203.176.23]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id TAA07710 for ; Tue, 5 May 1998 19:23:48 -0700 (PDT) Received: from [207.203.177.35] (pmj320.aeneas.net [207.203.177.35]) by main.aeneas.net (8.6.12/8.6.9) with SMTP id VAA12895; Tue, 5 May 1998 21:24:37 -0500 X-Sender: w5hvv@mail.aeneas.net Message-Id: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Tue, 5 May 1998 21:23:18 +0600 To: "Roberta J. Barmore" , glowbugs@piobaire.mines.uidaho.edu, BOATANCHORS@LISTSERV.TEMPE.GOV From: w5hvv@aeneas.net (Roderick M. Fitz-Randolph) Subject: Re: GB> Re: [BoatAnchors] "Q" signals for use of antique rigs? Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > (BTW, the mil Z-sig ZBA means "cause of delay is _____." It sort of >applies, if we take QBA to be similar. Stick with the Q-sig--lest you >receive a reply from a South African comm'l station! My favorite >Z-sig is ZAO: "Can't understand voice. Use telegraphy." H'mmm, wonder if >W9ZAO is taken? And ZAB could be useful: "Your speed key improperly >adjusted." Not that we ever hear *that* on the bands). > > 73, > --Bobbi __________________________________________________________________________ Bobbi, when I was handling CW traffic from Ascension Island as AFE83 back up to Patrick AFB (AFE70) and was also bringing the old obsolete DC-4s over from Recife, Brazil back in 1956-57, we used to use Z-codes. I've got a few good stories to tell about the use of the one that stands for, "Place a competent operator on the circuit". If my ancient memory cells work anymore, I recall it was ZBJ.... not sure tho. Do you (or anyone else) know where we can get a complete set of the Z-codes? Rod, N5HV w5hvv@aeneas.net From glowbugs-owner@piobaire.mines.uidaho.edu Wed May 6 01:06:08 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id BAA01056 for ; Wed, 6 May 1998 01:06:06 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id VAA09184 for glowbugs-outgoing; Tue, 5 May 1998 21:35:33 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from koto.qnet.com (mta@koto.qnet.com [207.155.37.7]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id VAA09179 for ; Tue, 5 May 1998 21:35:30 -0700 (PDT) Date: Tue, 5 May 1998 21:35:30 -0700 (PDT) Message-Id: <199805060435.VAA09179@piobaire.mines.uidaho.edu> Received: from k56-palm-02-06.ca.qnet.com ([207.155.33.158]) by koto.qnet.com (Post.Office MTA v3.1.2 release (PO203-101c) ID# 3-41930U500L2S100) with SMTP id AAA13411 for ; Tue, 5 May 1998 21:34:42 -0700 X-Sender: jmc@pop3.av.qnet.com X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: glowbugs@piobaire.mines.uidaho.edu From: JMcAulay Subject: GB> Q-Signals Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO When it comes to "Service Abbreviations" (AKA Q-Signals), one I'm rather surprised no one has mentioned recently is the ever-popular QLF? This, some may recall, is used when one wishes to enquire, "Are you sending with your left foot?" As an affirmative response, the abbreviation is, of course, simply followed by a period. 73 John WA6QPL From glowbugs-owner@piobaire.mines.uidaho.edu Wed May 6 08:29:23 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id IAA24481 for ; Wed, 6 May 1998 08:29:22 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id FAA15139 for glowbugs-outgoing; Wed, 6 May 1998 05:03:33 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from mail.xmission.com (mail.xmission.com [198.60.22.22]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id FAA15132 for ; Wed, 6 May 1998 05:03:29 -0700 (PDT) Received: from slc22h.modem.xmission.com (xmission.com) [166.70.9.22] by mail.xmission.com with esmtp (Exim 1.82 #2) id 0yX2uv-0003OS-00; Wed, 6 May 1998 06:03:22 -0600 Message-ID: <355052A7.3F5B58D0@xmission.com> Date: Wed, 06 May 1998 06:08:10 -0600 From: Dexter Francis Reply-To: cwest@xmission.com Organization: CWest Tube Sales X-Mailer: Mozilla 4.05 (Macintosh; I; PPC) MIME-Version: 1.0 To: michael silva , glowbugs@piobaire.mines.uidaho.edu Subject: GB> Re: --.- ...- . References: <199805052211.RAA06622@dfw-ix5.ix.netcom.com> Content-Type: text/plain; charset=us-ascii; x-mac-type="54455854"; x-mac-creator="4D4F5353" Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Gosh, I could even ID that one! (Therefore, I like it!) -df *** CWest - P.O. Box 22443 Salt Lake City, Utah 84122 *** *Visit our Web Page @ http://www.xmission.com/~cwest* From glowbugs-owner@piobaire.mines.uidaho.edu Wed May 6 10:21:40 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id KAA31376 for ; Wed, 6 May 1998 10:21:39 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id GAA17103 for glowbugs-outgoing; Wed, 6 May 1998 06:52:40 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from getnet.com (gn2.getnet.com [207.254.1.12]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id GAA17091 for ; Wed, 6 May 1998 06:52:35 -0700 (PDT) Received: from localhost (jackmead@localhost) by getnet.com (8.8.8/8.8.7) with SMTP id GAA16152; Wed, 6 May 1998 06:52:22 -0700 (MST) Date: Wed, 6 May 1998 06:52:22 -0700 (MST) From: Jack Meadows To: John Moriarity cc: glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Re: [BoatAnchors] "Q" signals In-Reply-To: <3.0.16.19980505171033.69377b82@SOCAL.WANet.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO What is the signal for QQQ? de, W7QQQ Jack p.s. maybe I shouldn't ask. On Tue, 5 May 1998, John Moriarity wrote: > Be careful when making up Q signals. According to an article > I read by Kenneth Brown, G0PSW, there are Q signals before QR > that (were?) used by the British Army. For example, QAU meant > "I am waterlogged". > > My special favorite is QGG, meaning "send the pony by the > next train". > > 73, > > John, K6QQ > > > From glowbugs-owner@piobaire.mines.uidaho.edu Wed May 6 12:55:33 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id MAA12486 for ; Wed, 6 May 1998 12:55:31 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id JAA19939 for glowbugs-outgoing; Wed, 6 May 1998 09:20:57 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from tntech.edu (SYSTEM@gemini.tntech.edu [149.149.11.7]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id JAA19929 for ; Wed, 6 May 1998 09:20:51 -0700 (PDT) Received: from [149.149.25.17] ("port 2048"@fh303.chem.tntech.edu) by tntech.edu (PMDF V5.1-10 #24187) with ESMTP id <01IWPMC7SBQ48WXTS9@tntech.edu> for glowbugs@piobaire.mines.uidaho.edu; Wed, 6 May 1998 11:20:04 CDT Date: Wed, 06 May 1998 11:22:01 -0500 From: "Dr. Dan Swartling" Subject: GB> Q signals To: glowbugs@piobaire.mines.uidaho.edu Message-id: MIME-version: 1.0 Content-type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO According to the Allied Communications Publication 131 (B), amended: QBA - What is the horizontal visibility at (place)? The horizontal visibility at (place) at ..... hours is (distance figures and units). There is no listing for QAT. There is QAR - May I stop listening on the watch frequency for ... minutes? and QAU - I am about to jettison fuel. and QAQ - Am I near a prohibited area? and QAP - Shall I listen for you on .... kHz (MHz)? and QAZ - Are you experiencing communications difficulties through flying in a storm? QOA to QQZ are reserved for the Maritime Services; however, no meanings have been assigned to date. This is why I occaisonally use QPP, as in "Have to go QPP AS K" which I am sure is a non-sanctioned usage. I rather like QBA but would hesitate to use it. I would use QAT without hesitating for a second. Any other comments? (Please forward this to the BA and GB lists for me. TNX) Dan ************************************************************************ * Dan Swartling DSwart@tntech.edu * * Assistant Professor of Chemistry djsx@woodlawn.uchicago.edu * * Tennessee Tech University DSwart@aol.com * * Cookeville, TN 38505 http://gemini.tntech.edu/~DSwart/ * * * * When life give you lemons, build a battery * ************************************************************************ From glowbugs-owner@piobaire.mines.uidaho.edu Wed May 6 14:39:08 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id OAA18897 for ; Wed, 6 May 1998 14:39:07 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id KAA21828 for glowbugs-outgoing; Wed, 6 May 1998 10:58:00 -0700 (PDT) Received: from localhost (keng@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id KAA21819; Wed, 6 May 1998 10:57:43 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: keng owned process doing -bs Date: Wed, 6 May 1998 10:57:43 -0700 (PDT) From: Ken Gordon X-Sender: keng@piobaire.mines.uidaho.edu To: Conard Murray WS4S cc: Dr Dan Swartling , glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Q signals In-Reply-To: <022701bd7910$e5e268e0$0a2a9595@tetrode.ece.tntech.edu> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO > Hi Dan, > Congrats on the callsign ..... do you have a copy of the ACP 131(B)? > I think a bunch of guys would like to see that scanned and put on the web. > Conard I have a scanner. Sandy is sending me the ACP. Where do you guys want it and in what format? Ken W7EKB From glowbugs-owner@piobaire.mines.uidaho.edu Wed May 6 15:44:49 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id PAA04504 for ; Wed, 6 May 1998 15:44:49 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA22730 for glowbugs-outgoing; Wed, 6 May 1998 12:11:30 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from dfw-ix8.ix.netcom.com (dfw-ix8.ix.netcom.com [206.214.98.8]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id MAA22725 for ; Wed, 6 May 1998 12:11:25 -0700 (PDT) Received: (from smap@localhost) by dfw-ix8.ix.netcom.com (8.8.4/8.8.4) id OAA19939; Wed, 6 May 1998 14:10:22 -0500 (CDT) Date: Wed, 6 May 1998 14:10:22 -0500 (CDT) Message-Id: <199805061910.OAA19939@dfw-ix8.ix.netcom.com> Received: from val-ca3-46.ix.netcom.com(206.217.130.110) by dfw-ix8.ix.netcom.com via smap (V1.3) id rma019915; Wed May 6 14:10:09 1998 From: mjsilva@ix.netcom.com (michael silva) Subject: GB> Looking for info on beam-deflection tube mixers To: glowbugs@piobaire.mines.uidaho.edu To: boatanchors@listserv.tempe.gov Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Hi all, I'm thinking out my next project, a portable CW transceiver, and I'd like to know what you all know about using beam-deflection tubes (not the 7360 due to its cost, but I've got some 6ME8s floating around) as mixers and detectors. What exactly are the advantages in both mixer and detector service? I gather that they are fairly quiet -- true? Any other reason to use or not use them in either circuit application? 73, Mike, KK6GM From glowbugs-owner@piobaire.mines.uidaho.edu Wed May 6 16:15:36 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id QAA30574 for ; Wed, 6 May 1998 16:15:35 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id MAA23110 for glowbugs-outgoing; Wed, 6 May 1998 12:41:54 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from smtp03.primenet.com (daemon@smtp03.primenet.com [206.165.6.133]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id MAA23105 for ; Wed, 6 May 1998 12:41:49 -0700 (PDT) Received: (from daemon@localhost) by smtp03.primenet.com (8.8.8/8.8.8) id MAA11153; Wed, 6 May 1998 12:40:58 -0700 (MST) Received: from usr04.primenet.com(206.165.6.204) via SMTP by smtp03.primenet.com, id smtpd011126; Wed May 6 12:40:53 1998 Date: Wed, 6 May 1998 12:40:51 -0700 (MST) From: Chris Trask To: michael silva cc: glowbugs@piobaire.mines.uidaho.edu, boatanchors@listserv.tempe.gov Subject: Re: GB> Looking for info on beam-deflection tube mixers In-Reply-To: <199805061910.OAA19939@dfw-ix8.ix.netcom.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO On Wed, 6 May 1998, michael silva wrote: > Hi all, > > I'm thinking out my next project, a portable CW transceiver, and I'd > like to know what you all know about using beam-deflection tubes (not > the 7360 due to its cost, but I've got some 6ME8s floating around) as > mixers and detectors. What exactly are the advantages in both mixer > and detector service? I gather that they are fairly quiet -- true? > Any other reason to use or not use them in either circuit application? > Another envelope is the 6AR8. These tubes were very susceptible to magnetice fields (just like a CRT) and were usually shielded. For all intents and purposes, they are very much like a long-tailed pair, which is a differential pair of triodes having a common cathode which is then connected to the plate of a third tube used as a current source. For mixers, modulators, and synchronous detectors they're great. ,----------------------. Circuit Design for the / What's all this \ RF Impaired / extinct stuff, anyhow? / \ _______,--------------' Chris Trask / N7ZWY _ |/ Principal Engineer oo\ ATG Design Services (__)\ _ P.O. Box 25240 \ \ .' `. Tempe, Arizona 85285-5240 \ \ / \ \ '" \ Technical Editor, . ( ) \ QRP Quarterly '-| )__| :. \ QRP ARCI 9464 | | | | \ '. c__; c__; '-..'>.__ Email: ctrask@primenet.com http://www.primenet.com/~ctrask Graphics by Loek Frederiks From glowbugs-owner@piobaire.mines.uidaho.edu Thu May 7 00:54:30 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id AAA23920 for ; Thu, 7 May 1998 00:54:28 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id VAA29756 for glowbugs-outgoing; Wed, 6 May 1998 21:18:44 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from relay1.Hawaii.edu (root@relay1.hawaii.edu [128.171.3.53]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id VAA29751 for ; Wed, 6 May 1998 21:18:41 -0700 (PDT) Received: from uhunix4.its.Hawaii.Edu ([128.171.44.54]) by relay1.Hawaii.Edu with SMTP id <148513(7)>; Wed, 6 May 1998 18:17:54 -1000 Received: from localhost by uhunix4.its.Hawaii.Edu with SMTP id <216703(9)>; Wed, 6 May 1998 18:17:48 -1000 Date: Wed, 6 May 1998 18:17:44 -1000 From: Jeffrey Herman X-Sender: jeffreyh@uhunix4 To: Bill Hawkins cc: broehrig@admin.aurora.edu, keng@uidaho.edu, glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Glowbugs and QSK... In-Reply-To: <199805021634.LAA08029@citrus.iaxs.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Why not just add an extra set of contacts to your handkey? You can also use the key's gap adjusting screw (to the rear) as a NC contact point - great for muting your rcvr's speaker during key-down. Jeff KH2PZ (who has an antenna lead-in wires and speaker wires running to and from his key!) From glowbugs-owner@piobaire.mines.uidaho.edu Thu May 7 09:31:53 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id JAA14666 for ; Thu, 7 May 1998 09:31:52 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id FAA04874 for glowbugs-outgoing; Thu, 7 May 1998 05:57:01 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from tntech.edu (SYSTEM@gemini.tntech.edu [149.149.11.7]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id FAA04869 for ; Thu, 7 May 1998 05:56:57 -0700 (PDT) Received: from [149.149.25.17] ("port 2054"@fh303.chem.tntech.edu) by tntech.edu (PMDF V5.1-10 #24187) with ESMTP id <01IWQTHAI1588WY1ST@tntech.edu> for glowbugs@piobaire.mines.uidaho.edu; Thu, 7 May 1998 07:55:46 CDT Date: Thu, 07 May 1998 07:57:49 -0500 From: "Dr. Dan Swartling" Subject: GB> Q codes To: glowbugs@piobaire.mines.uidaho.edu Message-id: MIME-version: 1.0 Content-type: text/plain; charset="us-ascii" Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO The ACP131(B) list can be found at: http://www.ac6v.com/pagel.html Lots of good stuff at this sight. Dan ************************************************************************ * Dan Swartling DSwart@tntech.edu * * Assistant Professor of Chemistry djsx@woodlawn.uchicago.edu * * Tennessee Tech University DSwart@aol.com * * Cookeville, TN 38505 http://gemini.tntech.edu/~DSwart/ * * * * When life give you lemons, build a battery * ************************************************************************ From glowbugs-owner@piobaire.mines.uidaho.edu Fri May 8 14:44:19 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id OAA18052 for ; Fri, 8 May 1998 14:44:18 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id LAA25645 for glowbugs-outgoing; Fri, 8 May 1998 11:09:41 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from hotmail.com (f27.hotmail.com [207.82.250.38]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id LAA25640 for ; Fri, 8 May 1998 11:09:36 -0700 (PDT) Received: (qmail 19197 invoked by uid 0); 8 May 1998 18:08:46 -0000 Message-ID: <19980508180846.19196.qmail@hotmail.com> Received: from 147.49.3.25 by www.hotmail.com with HTTP; Fri, 08 May 1998 11:08:46 PDT X-Originating-IP: [147.49.3.25] From: "Brad Hernlem" To: glowbugs@piobaire.mines.uidaho.edu Subject: GB> RAL Schematic Content-Type: text/plain Date: Fri, 08 May 1998 11:08:46 PDT Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO I have tried to download the ral7schematic.ps.gz from the following site but it seems to be munged or something. Anyone know where I can get a copy that is readable (I get PS errors in GhostScript and can't print it out on a PS printer either)? http://www.mines.uidaho.edu/ftp/pub/Glowbugs/Military/ Thanks, Brad ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com From glowbugs-owner@piobaire.mines.uidaho.edu Sat May 9 01:20:38 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id BAA00424 for ; Sat, 9 May 1998 01:20:38 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id VAA07641 for glowbugs-outgoing; Fri, 8 May 1998 21:57:16 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from radiate.indy.net (radiate.indy.net [199.3.65.253]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id VAA07636 for ; Fri, 8 May 1998 21:57:12 -0700 (PDT) Received: from indy3.indy.net (root@indy3.indy.net [199.3.65.14]) by radiate.indy.net (8.8.7/8.8.7) with ESMTP id XAA11728; Fri, 8 May 1998 23:57:42 -0500 (EST) Received: from localhost (rbarmore@localhost [127.0.0.1] (may be forged)) by indy3.indy.net (8.8.7/8.8.7) with SMTP id XAA04264; Fri, 8 May 1998 23:57:39 -0500 (EST) Date: Fri, 8 May 1998 23:57:37 -0500 (EST) From: "Roberta J. Barmore" X-Sender: rbarmore@indy3 To: BA , glowbugs@piobaire.mines.uidaho.edu Subject: GB> Dayton.... Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Hi, Gang! I have been hoping to get to Dayton (the Hamvention, that is) again this year, and have been keeping track of the other listfolks who will be there, especially those with Actual Spaces, as one usually has a 50-50 chance of meetin' 'em. But as of now, it's looking iffy, thanks to a long dull story which I will not tell, as it involves solid-state and some detail design work of which my opinions might be actionable if expressed in print. (In many ways, the usual drill for my line of work). There's an off chance I might be able to work out going there *Friday* and that leads to a question for the More Experienced Tube-slingers: how's the flea market at Dayton on Friday, typically? 73, --Bobbi (Pounding my head against the wall? Why no, I'm not pounding my head against the wall. Besides, it feels so good when I stop). KB9GKX "RJ" rbarmore@indy.net Roberta J. (Bobbi) Barmore FISTS #3388 * G-QRP #10001 * ARRL * RSGB * WIA Appreciator Of Vacuum-Tube Ham Gear and Vintage Keys From glowbugs-owner@piobaire.mines.uidaho.edu Sat May 9 01:58:44 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id BAA32634 for ; Sat, 9 May 1998 01:58:43 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id WAA08149 for glowbugs-outgoing; Fri, 8 May 1998 22:29:25 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from enterprise.powerup.com.au (enterprise.powerup.com.au [203.32.8.37]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with SMTP id WAA08144 for ; Fri, 8 May 1998 22:29:19 -0700 (PDT) Received: (qmail 4704 invoked from network); 9 May 1998 05:28:32 -0000 Received: from ts5802.powerup.com.au (HELO mkelly) (202.139.238.194) by enterprise.powerup.com.au with SMTP; 9 May 1998 05:28:32 -0000 Message-ID: <3553E979.2CA1@powerup.com.au> Date: Sat, 09 May 1998 15:28:25 +1000 From: Murray Kelly Reply-To: mkelly@powerup.com.au Organization: M P Kelly (Med) P/L X-Mailer: Mozilla 3.01C-NSCP (Win95; I) MIME-Version: 1.0 To: "Roberta J. Barmore" CC: BA , glowbugs@piobaire.mines.uidaho.edu Subject: Re: GB> Dayton.... References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-glowbugs@piobaire.mines.uidaho.edu Precedence: bulk Status: RO Roberta J. Barmore wrote: > how's the flea market at Dayton on Friday, typically? > > 73, > --Bobbi If it's not raining it's OK. I had to jump 6" deep 'puddles' on the Fri I was there. :-( ****************************************************************** * Murray Kelly vk4aok mkelly@powerup.com.au * * 29 Molonga Ter. / Graceville/ QLD. 4075/ Australia * * ph/fax Intl+ 61 7 3379 3307 * ****************************************************************** From glowbugs-owner@piobaire.mines.uidaho.edu Sat May 9 04:06:57 1998 Return-Path: Received: from piobaire.mines.uidaho.edu (root@piobaire.mines.uidaho.edu [129.101.8.252]) by smtp.WPI.EDU (8.9.0.Beta6/8.9.0.Beta6) with ESMTP id EAA17431 for ; Sat, 9 May 1998 04:06:55 -0400 (EDT) Received: (from domo@localhost) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) id AAA09650 for glowbugs-outgoing; Sat, 9 May 1998 00:42:33 -0700 (PDT) X-Authentication-Warning: piobaire.mines.uidaho.edu: domo set sender to owner-glowbugs using -f Received: from sw2031.ki.icl.se (sw2031.ki.icl.se [140.150.92.61]) by piobaire.mines.uidaho.edu (8.8.3/8.6.12) with ESMTP id AAA09644 for ; Sat, 9 May 1998 00:42:29 -0700 (P