U-229 Audio Accessories

Brooke Clarke, N6GCE

Handsets
Headsets
Microphones & Earphones
Miscellaneous
Speakers
Test Equipment
VIC - Vehicle Inter Communication
Other

U-229 Family Pinout by Function: Audio, Fill, Data
Audio Connectors
Military Audio Accessories (small photos)

Handsets

M-80 - Microphone common for many mil radios
M-153 - Microphone, Voice Silencer - someone right beside you can not hear what you are saying
H-250 - Telephone style mike & earphone with PTT common for many mil radios
H-350 - Telephone style mike & earphone with PTT for use with telephone equipment or 5-pin audio connector mil radios but not 6-pin

Headsets

EM200 Ear Mike
H-251 - Headphones
H-161A/U Headset with boom mike
Plantronics Supra SHS1585-01NC Headset -

Microphones & Earphones

Microphones & Earphones are elements of a handset or headset.

Miscellaneous

PRC-68 Family Frequency Assignment Cloning Cable -
PRC-68 Family Repeater/Retransmission Cable - the receiver must have a 6 pin AUDIO connector.
Y cable - one U-229 and 2 each U-228 allows the use of two audio accessories with one radio, like headphones and seperate mike.  Designed by Fort Monmouth, built by Federal Correctional Institution, Danbury, CT
CX-7867 - 13' long U-229 to U-228 extension Cable, built by Federal Correctional Institution, Danbury, CT - ONLY A, B and E connected!
Radio Shack Simplex Repeater Controler 19-345 - allows talking to yourself, great for testing
Crypto Fill Cable - 6 pins ( A through F) wired direct

Speakers

LS-454 - is an un amplified speaker with a U-229 connector on a cable. TM 11-5965-255-14P.pdf
AM-4979/GR Amplified Speaker - with mod for use with PRC-68 series radios

AM-6747 speaker Controls,
          connectors & IndicatorsAM-6747 - similar to the AM-4979 but has a connector for Audio in instead of a cable








Test Equipment

Audio Power Test Adapter - used for testing PRC-68 series squad radios -
HP 204B Audio Oscillator - a 1 mw signal at 1 kHz is easily heard on a handset or headset.  You can hear a pronounced drop in signal level at 50 Hz and at 20 kHz since military hand & head sets are built for 300 to 3000 Hz operation.  Working on a way to test microphones.
Radio Headset/Mic Test Harness - brings out pins A, B, C, D, and E (and now F) to test points
TS-585C Audio Level Meter -

VIC - Vehicle Inter Communication

moved to it's own web page

Other

RD-609/TSQ-64 Communications Recorder

Links

Fair Radio -
Mike Murphy -
Steve Hanney -
Back to Brooke's Products for Sale, alphanumeric index of web pages, PRC68, U-229 Pin Out by FunctionMilitary Audio, Squad RadioMilitary Information, Home page

Page created 16 March 2001.