MILITARY MIKES, HANDSETS, HEADSETS and SPEAKERS --------------------------------------------- by Gerry Stephens, W9SLM Transcribed by Jerry Proc, VE3FAB on September 3, 1995 The following article was published in the June 1964 issue of 73 Magazine and is a summary of various military microphones, handsets, headphones and speakers developed during World War 2. HANDSETS -------- Type Cord Wires Plug Remarks ---------------------------------------------------------------- TS- 9 9 ft 3 Terms Unit includes PTT switch. Part of telephone EE-8. TS-10 6 ft 2 Clips 2 sound powered phones in parallel. Impedance is 350-600 ohms. No PTT. TS-11 6 ft 4 PL-106 Cord equipped with built in RF coil with PTT switch. Part of SCR-195. TS-12 9 ft 3 Terms Similar to TS-9 except has hanger to hook on box. Used with EE-91. TS-13 5 ft 4 PL-55 Similar to TS-11 but has 750 ohm res. PL-68 TS-14 5 ft 4 PL-204 Similar to TS-9 except no PTT switch. Part of SCR-561. TS-15 5 ft. 4 PL-55 Similar to TS-13. Different switch PL-68 and no resistor. Part of SCR-300. Type L 4.5 ft 2 --- Similar to TS-10 except impedance is 350 ohms. LOUDSPEAKERS ------------ Type Imped(ohms) Remarks ----------------------------------------------------------------- LS-1 ---- 4" PM type, part of BC-603. LS-2 6 6" PM type in walnut cabinet. Part of SCR-13. LS-3 8000 6" PM type in 8 x 8 steel box. Part of SCR-299. LS-6 ---- 4" PM type with baffle and horn. Part of PA-4. LS-7 4000 4" PM type with input xformer and 3 ft. cord. LS-9 250 Similar to LS-3 except lower impedance. LS-11 250 Similar to LS-7 except lower impedance. MICROPHONES ----------- Type Res. or Plug Remarks Imped ---------------------------------------------------------------- T-17 60 PL-68 Hand held carbon with PTT switch. T-21 --- ----- Condenser type with 2 stage preamp built into the base. Part of GR-3. T-24 60 PL-106 Carbon mike, Part of handset SCR-194 and SCR-543. T-26 60 PL-58 Commercial telephone type carbon, with arm. Part of SCR-197. T-30 120 PL-291 Carbon throat type, 2 units in series on neck piece. T-32 40 ------ Carbon mike on desk stand with PTT switch. Part of SCR-188A. T-34A 200 PL-179 Magnetic type, MC-233 mike. Part of JK-26 SCR-522 and SCR-542. T-35 75 PL-51 Similar to T-26. Part of chest set TD-1. T-36 50 ------ Carbon type with PTT sw. Part of PA-4. T-38 40 PL-58 Carbon mike with PTT sw. Part of SCR-197. T-42 --- ----- Replaced by ANB-M-CL. T-44 200 PL-179 Magnetic type for use in oxygen mask. JK-26 Part of SCR-522 and SCR-542. T-45 60 PL-291 Carbon type, anti-noise lip mike. T-50 21 k Amphenol Moving coil type with PTT switch. Part MC-3M of SCR-299, SCR-300 and SCR-499. ANB-M-C1 60 PL-291 Carbon mike type MC-254. May be used in T-17 and T-30. Replaces T-42. HEADSETS (PHONES) ----------------- Type Imped Plug Remarks ---------------------------------------------------------------- P-11 24 kohm PL-5 Double receiver headset. P-12 24 " PL-5 Double receiver headset. Will replace P-16. P-13 512 ohm PL-51 Double receiver headset with cushions. P-14 24 kohm PL-5 Double receiver handset with cushions. Part of SCR-189, 190, and 199. P-16 24 kohm PL-5 Similar to P-12, except has longer waterproof cord. Part of SCR-163. P-18 24 kohm PL-55 Similar to P-16 except different plug. P-19 24 kohm PL-55 Similar to P-14 and P-18 except has PL-55 plug and MC-114 cushions. P-21 24 kohm PL-55 4 receivers on 2 headbands. One unit in each headset is in series. Used when two operators need to listen to two different radio channels. P-23 8 kohm PL-55 Double receiver headset with MC-162 cushions. HS-16A 520 ohm HB-1 Double receiver headset used with code practice equipment. HS-18 8 kohm PL-54 For crash helmets. Two receivers with two cushions. Replaced by HS-30 and HS-33. HS-20 470 ohm PL-55 Single receiver headset. Part of TG5-A or TG5-B. HS-22 8 kohm PL-55 Double receiver headset with cushions. Part of SCR-194. HS-23 8 kohm PL-54 Double receiver headset. Replaced by HS-30 and HS-33. HS-24 512 ohm PL-58 Sound powered type. Double receiver with cushions. HS-29 256 ohm PL-55 Four receivers on two headbands. Used in DF installations. HS-30 256 ohm none Double receiver insert type with ear inserts M-300. HS-33 600 ohm PL-354 Double receiver headset with cushions MC-162. HS-38 600 ohm PL-354 Double receiver for use in Air Corps helmets.