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Military connectors
This page is a stub

This page contains a random selection of military connectors that have been encountered on equipment in our collection.

U79/U
Layout
This connector is often found on military equipment. It is extremely robust and allows quick connect/disconnect by turning the plug 10 degrees. It accepts a U-77/U cable part (plug).

Pins
10
Chassis
U79/U
Cable
U77/U
Usage
Headset, handset, speaker, intercom,
CIK (Philips)
Power (not recommended) 1 		  

  1. WARNING — On some devices, such as the SSR-4 receiver, an U79/U connector is used to provide the 110 or 220V mains AC voltage to the instrument. This is potentially dangerous as the contacts of the plug can easily be tounched with a finger. Always connect the instrument first, before connecing the cable to the mains.
IC-3620 intercom
Below is the pinout of the U-79/U connectors – when looking into the receptacles – on the IC-3620 intercom set of the Philips RT-3600 military radio. The same connector, with the same pinout, can be found on the vehicle junction boxes used with this radio set. The same pinout is also used on the GRA3686 remote control set. ➤ More about the RT-3600

  1. SPK
    Speaker output (regulated)
  2. SPK GND
    Speaker return
  3. MIC RAD
    Microphone to radio
  4. AF LINE
    Audio line out (fixed)
  5. MIC GND
    Microphone return
  6. PTT
    Push-to-Talk
  7. PTT GND
    Push-to-Talk return
  8. n.c.
    unused
  9. MIC IC
    Microphone to intercom
  10. SPK +18V
    +18V power for speaker
FuG-8 handset
Below is the pinout of the U79/U socket on German FuG-8 two-way radios, like the Bosch KF-802 and the AEG/Telefunken Telecar 100. By convention, this layout is used by virtually all two-way radios that were used by the German public safety services at the time. ➤ More about the FuG-8

  1. n.c.
    unused
  2. PTT
    Push-to-Talk
  3. PTT
    Push-to-Talk
  4. SPK
    Speaker
  5. SPK
    Speaker
  6. MIC
    Microphone
  7. MIC
    Microphone
  8. GND
    Ground
  9. n.c.
    unused
  10. n.c.
    unused
  11. n.c.
    unused
U79/U on this website
Spendex-40 secure telephone for voice, fax and computer
Spendex 50 (DBT), military secure crypto phone
Philips RT-3600 wideband VHF FM radio
Philips RT-4600 wideband VHF FM radio
KL/GRA-3686 radio remote control set
Telefunken FuG-8 two-way police radio (4m band)
RDN-F-221 full-duplex data/voice radio for 2-meter band
CIA VHF intercept receiver SRR-4
Further information
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© Crypto Museum. Created: Monday 15 April 2024. Last changed: Saturday, 11 May 2024 - 06:30 CET.
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