Here it is. Sure hope some of those who are prone to calling everything an "ARC-5" see this. ---------- ---------- Date: Sat, 6 May 1995 08:22:16 -0700 (PDT) From: Ray L. Mote To: boatanchors@theporch.com Subject: Command Set components I've seen a number of requests for information on the components which made up each of the three major Command Set systems (Navy ATA/ARA, Air Corps SCR-274-N, and joint AN/ARC-5. I hate to use this much bandwidth (approximately one quarter of an entire Digest), but maybe we can do it once and be done with it. I have not included things like RAT, RAV, SCR-183, SCR-283, etc. because they were either very limited production items or they were being phased out as we entered WW2. Suggest this be placed in the Archives, to avoid need to repost in future! COMMAND SETS (W6RIC, 6 May 1995) 1. Navy ATA/ARA Components: Navy Type Manufacturer's Designation Name of Major Unit or Accessory Designation CBY-21531 Receiver Dynamotor 7351 CBY-21626 Transmitter Dynamotor 5168 CBY-23155 Receiver Control Box (2-RX) 6546 CBY-23243 Transmitter Control Box 7095 CBY-23251 Receiver Control Box (3-RX) 5014 CBY-29125 Antenna Relay 5017 CBY-29126 Antenna Relay Shock Mount 7056 CBY-46085 Receiver Shock Mount (2-RX) 5694 CBY-46104 Receiver, 1.5-3.0 Mc 5005 CBY-46105 Receiver, 3.0-6.0 Mc 5006 CBY-46106 Receiver, 6.0-9.1 Mc 5007 CBY-46110 Receiver Rack (2-RX) 5018 CBY-46129 Receiver, 190-550 Kc 7839 CBY-46145 Receiver, 520-1500 Kc 7950 CBY-46149 Receiver Rack (3-RX) 7537 CBY-46150 Receiver Shock Mount (3-RX) 7060 CBY-49107 Switch Panel Adapter (each RX except 46145) 6433 CBY-50083 Modulator 5013 CBY-50084 Modulator Shock Mount 7058 CBY-52208 Transmitter, 3.0-4.0 Mc 5009 CBY-52209 Transmitter, 4.0-5.3 Mc 5010 CBY-52210 Transmitter, 5.3-7.0 Mc 5011 CBY-52211 Transmitter, 7.0-9.1 Mc 5012 CBY-52212 Transmitter Rack (2-TX) 5020 CBY-52213 Transmitter Shock Mount 7062 CBY-52232 Transmitter, 2.1-3.0 Mc 7916 CBY-62036 Auxiliary Outlet Adapter (use w/46145 only) 9074 ? Receiver Control Box Mounting Plate (2-RX) 6831 ? Receiver Control Box Mounting Plate (3-RX) 7054 ? Transmitter Control Box Mounting Plate 7083 ? Receiver Test Set 7918 ? Transmitter Test Set 7919 ? Plugs: Receiver Rack, battery 6578 Receiver Rack, Modulator 6784 Receiver Rack, Receiver Control Box 6577 Modulator, Transmitter Control Box 6963 Transmitter Rack, Modulator 6964 Modulator, battery 6965 Transmitter Rack, Antenna Relay 6967 ? Tools: Tube Extractor 7489 Bristo Wrench #6 8021 Phillips Screw Driver #1A 8020 Knob Assembly, local tuning 6743 ? Splined Cable Components: Casing 3406 Shafting 1174 Nut 1167 Sleeve 6585 Spline 6788 Tag 6789 ? Dials for Receiver Control Box: 190-550 Kc 6051 520-1500 Kc 6052 1.5-3.0 Mc 7575 3.0-6.0 Mc 6053 6.0-9.1 Mc 6054 ? Miscellaneous: (RX=Receiver, TX=Transmitter) RX Dynamotor Brushes (Low Voltage) 23609-3 RX Dynamotor Brushes (High Voltage) 23609-4 TX Dynamotor Brushes (Low Voltage) 23609-6 TX Dynamotor Brushes (High Voltage) 23609-9 NOTE: Each brush part number must be suffixed with the appropriate "+" or "_". For example, on the 28 VDC end of the RX dynamotor, you would need both a 23609-3(+) and a 23609-3(-). Each brush is marked appropriately, and so is each brush holder. ? Shock absorber unit: In 2-RX or 2-TX shock mount 5185 In 3-RX shock mount 5195 In modulator shock mount 7067 In antenna relay shock mount 7065 NOTE: The above information was taken from: First Edition of Final Instruction Book for Model ATA and Model ARA Aircraft Radio Telegraph and Telephone Transmitting and Receiving Equipment. Aircraft Radio Corporation Boonton, New Jersey Contract Number NOs-74192 dated June 29, 1940. 2. SCR-274N Components: A-61-A Dummy Antenna (for transmitter tests) BC-442 Antenna Relay BC-450 Remote Control (for 3 receivers) BC-451 Remote Control (for up to 4 transmitters) BC-453 Receiver 190-550 Kc BC-454 Receiver 3.0-6.0 Mc BC-455 Receiver 6.0-9.1 Mc BC-456 Modulator BC-457 Transmitter 4.0-5.3 Mc BC-458 Transmitter 5.3-7.0 Mc BC-459 Transmitter 7.0-9.1 Mc BC-473 Remote Control (for 1 receiver) BC-496 Remote Control (for 2 receivers) BC-696 Transmitter 3.0-4.0 Mc BC-946 Receiver 550 Kc - 1.5 Mc DM-32 Dynamotor (to power receiver from 28 volts DC) DM-33 Dynamotor (to power modulator & transmitter from 28v) FT-220 Mounting Rack (for 3 receivers) FT-221 Shock Mount (for 3 receivers) FT-222 Mounting Plate (for 3-receiver remote control box) FT-225 Shock Mount (for modulator) FT-226 Mounting Rack (for 2 transmitters) FT-227 Shock Mount (for 2 transmitters) FT-228 Mounting Plate (for transmitter control box) FT-229 Shock Mount (for antenna relay) FT-230 Adapter (for remote control of receiver, plugs into lower front of receiver, has only a "pull-type" handle) FT-231 Shock Mount (for 1 receiver) FT-232 Shock Mount (for 1 transmitter) FT-233 Mounting Rack (for 1 receiver) FT-234 Mounting Rack (for 1 transmitter) FT-235 Mounting Plate (for 1-receiver remote control box) FT-240 Mounting Plate (for 2-receiver remote control box) FT-260 Adapter (for local control of receiver, plugs into lower front panel of receiver, has headphone jack, volume control, and switch.) FT-262 Shock Mount (for 3 transmitters) FT-264 Mounting Rack (for 4 receivers) FT-276 Mounting Rack (for 3 transmitters) FT-277 Mounting Rack (for 2 receivers) FT-278 Shock Mount (for 4 receivers) FT-279 Shock Mount (for 2 receivers) FT-331 Mounting Rack (for 4 transmitters) FT-332 Shock Mount (for 4 transmitters) I-84 Receiver test unit I-85 Transmitter test unit MC-211 Right-angle adapter for splined cable MC-215 Splined cable for receiver remote control (these came in various lengths from 18" to 13 feet!) MC-237 Local tuning knob (spinner type) for receiver (may also carry MC-236 designator or 6743 part nol.) NOTE: The connectors have two part numbers -- one for the "standard" wiring harness, and one for an open wiring harness. (One has a backshell, the other does not.) The two variants are the basic plug number, and the basic number plus an "A" suffix. PL-147 Plug, 2-pin, part numbers 6578 or 9127 PL-148 Plug, 3-pin, part numbers 6965 or 9126 PL-151 Plug, 6-pin, part numbers 6784 or 9123 PL-152 Plug, 8-pin, part numbers 6577 or 9125 PL-153 Plug, 18-pin, part numbers 6963 or 9121 PL-154 Plug, 12-pin, part numbers 6964 or 9122 PL-156 Plug, 5-pin, part numbers 6967 or 9124 PL-157 Plug, 2-pin, part numbers 3146 or 7543 (discontinued) PL-192 Plug, adapter to permit local control of receiver, part number 6787 RC-54 Receiver Test Set (Includes I-84 test unit) RC-55 Transmitter Test Set (Includes I-85 test unit and A-61-A dummy antenna) 3. AN/ARC-5 Components: Manufacturer's Item Name of Major Unit or Accessory Designation C-24/ARC-5 Receiver Local Control Box 6434 C-25/ARC-5 Antenna Loop Control Box 9608 C-26/ARC-5 Receiver Remote Box 9601 C-27/ARC-5 Receiver "Lock-Tuned" Control Box 9850 C-29/ARC-5 Transmitter Control Box 9314 C-30/ARC-5 Transmitter Control Box (VHF/HF) B32611 C-30A/ARC-5 Transmitter Control Box 9910 C-38/ARC-5 Main Control Box 9610 C-39/ARC-5 Auxiliary Control Box (no microphone relay) 9901 C-42/ARC-5 Receiver Control Box (VHF only) B33131 C-43/ARC-5 Receiver Control Box (VHF/HF) B33090 C-48/ARC-5 Auxiliary Control Box (with microphone relay) 9902 DY-2A/ARR-2 Receiver Dynamotor 7351 DY-8/ARC-5 Transmitter Dynamotor 5168 IN-83 Insulator beads for antenna lead J-16/ARC-5 Jack Box (no microphone relay) 9905 J-17/ARC-5 Junction Box 9903 J-22/ARC-5 Jack Box (with microphone relay) 9867 J-22A/ARC-5 Jack Box (with microphone relay, vol. cont.) 9907 J-28/ARC-5 Junction Box ("Y" in cable from VHF Transmitter control box to VHF transmitter & receiver) 9609 J-34/ARC-5 Junction Box ("Y" junct. in cable 9376) 9562 MD-7/ARC-5 Modulator 9313 MT-4/ARR-2 Mounting Plate (C-26, C-42) 7053 MT-5/ARR-2 Receiver shock mount (1-RX) 7059 MT-7A/ARR-2 Receiver rack (1-RX) 7509 MT-62/ARC-5 Receiver shock mount (2-RX) 5694 MT-63/ARC-5 Receiver rack (2-RX) 5018 MT-64/ARC-5 Receiver shock mount (3-RX) 7060 MT-65/ARC-5 Receiver rack (3-RX) 7537 MT-66/ARC-5 Receiver shock mount (4-RX) 7061 MT-67/ARC-5 Receiver rack (4-RX) 5019 MT-68/ARC-5 Transmitter shock mount (1-TX) 7062 MT-69/ARC-5 Transmitter rack (1-TX) 9306 MT-70/ARC-5 Transmitter shock mount (2-TX) 7063 MT-71/ARC-5 Transmitter rack (2-TX) 9307 MT-72/ARC-5 Transmitter shock mount (3-TX) 7064 MT-73/ARC-5 Transmitter rack (3-TX) 9593 MT-74/ARC-5 Transmitter shock mount (4-TX) 7065 MT-75/ARC-5 Transmitter rack (4-TX) 9594 MT-76/ARC-5 Modulator shock mount 7058 MT-77/ARC-5 Antenna relay shock mount 7056 MT-78/ARC-5 Mounting plate (C-27, J-16, J-22/22A) 9451 MT-80/ARC-5 Mounting plate (C-29, C-30/30A, C-39, C-48, J-28, J-34) 7083 MT-85/ARC-5 Mounting plate (J-17) 9904 MT-98/ARC-5 Mounting plate (C-38, C-43) 7054 MT-159/ARC-5 Antenna loading coil shock mount 7057 MX-19/ARC-5 Audio adapter 9595 MX-20/ARC-5 Power adapter 9074 MX-21/ARC-5 Remote control adapter 6433 R-20/ARC-5 Receiver, 1.5-3.0 Mc ---- R-21/ARC-5 Receiver, 3.0-6.0 Mc ---- R-22/ARC-5 Receiver, 6.0-9.0 Mc ---- R-23/ARC-5 Receiver, 190-550 Kc 9602 R-24/ARC-5 Receiver, 520-1500 Kc 9603 R-25/ARC-5 Receiver, 1.5-3.0 Mc 9604 R-26/ARC-5 Receiver, 3.0-6.0 Mc 9605 R-27/ARC-5 Receiver, 6.0-9.1 Mc 9606 R-28/ARC-5 Receiver, VHF (100-156 Mc) B33595 R-112/ARC-5 Receiver, VHF (100-125 Mc tunable - rare!) ------ R-113/ARC-5 Receiver, VHF (125-156 Mc tunable - rare!) ------ R-148/ARC-5 Receiver, 190-550 Kc ---- RE-2/ARC-5 Antenna Relay 5017 T-15/ARC-5 Transmitter, 500-800 Kc 9315 T-16/ARC-5 Transmitter, 800-1300 Kc 9316 T-17/ARC-5 Transmitter, 1.3-2.1 Mc 9317 T-18/ARC-5 Transmitter, 2.1-3.0 Mc 9308 T-19/ARC-5 Transmitter, 3.0-4.0 Mc 9309 T-20/ARC-5 Transmitter, 4.0-5.3 Mc 9310 T-21/ARC-5 Transmitter, 5.3-7.0 Mc 9311 T-22/ARC-5 Transmitter, 7.0-9.1 Mc 9312 T-23/ARC-5 Transmitter, VHF (100-125 Mc) B32616 T-89/ARC-5 Transmitter, VHF (100-125 Mc tunable - rare!) ---- T-90/ARC-5 Transmitter, VHF (125-156 Mc tunable - rare!) ---- TN-6/ARC-5 Antenna loading coil 9607 NOTE: Both HF and VHF equipment is shown in the list above, unlike the original lists in the manual. Equipment in the "VHF" list in the manual included: C-30, C-30A, C-42, C-43, DY-2, R-28, T-23, and the IE-35-A and AN/GRM-1 test equipment The following appeared on a separate list under the heading "Major Units Usable With Several Aircraft Equipments": C-38, C-39, C-48, J-16, J-17, J-22, J-22A, MT-78, MT-80, MT-85, and MT-98 (some of which were already on that list). Above taken from: Handbook of Operating Instructions for Model AN/ARC-5 Aircraft Radio Equipment, NAVAER 08- 5Q-95, dated 21 February 1944.