PRC-25 & PRC-77 Test Adapter

©Brooke Clarke, N6GCE



Front
Back

Description

This test adatper connects to the "POWER" connector on the PRC-25, PRC-77, X-mode on the VRC-12 series radios and the Tx/Rx & REMOTE  MSC-2001 plus other things.  It has 12 each spring clip binding posts that connect to the corresponding contacts.  The male connector that mates to the radio is marked 9215 ACCPW06B12-14P and has 14 Pins.  The female connector, like the one on the radio is marked 30194 GC01A12-14S and has 14 sockets.

Pins K and N have no wire connected.

The following terminals are present:
 
Pin Letter
Test Box
Label
PRC-25
Function
PRC-77
Function
MSC-2001
Rx/Tx
MSC-2001
Remote
Binding Post color
A
GND
Ground
Ground Gnd
Gnd
Black
B
AUDIO
OUT
Audio
Out
Audio
Out
Audio
Out
Audio
Out
Silver
C
R/T REL
PTT
PTT PTT PTT
Silver
D
MIC
Mike
Mike Mike Mike
Silver
E
+13V
Radio
+13 VDC
Radio
+13 VDC
Radio
+13 VDC
Radio
+13 VDC
Red
F
+13V
Battery
+13 VDC
Battery
+13 VDC
Battery
+13 VDC
Battery
+13 VDC
Red
H
+3V
Radio +3 VDC
nc


Red
J
GND
MIC Gnd
MIC Gnd MIC Gnd MIC Gnd
Black
K

na
ReTrans
 PT
ReTrans
 PTT
ReTrans PTT

no binding
post
no wire
L
+3V
Radio +3 VDC
Tone dsbl
= gnd

Cipher
/
Plain
Red
M
+3V
Battery +3 VDC

audio
to
handset
nc
Red
N

na
+13 from FUNCTION sw

+13
from
VEU
+13
Into
VEU
no binding post
no wire
P
OUT
SHUNT
na
Wideband audio out

Silver
R
TR
na
wideband audio in

Silver

The binding posts carrying DC power have Red Caps.  Ground is black and the rest are just the raw Silver.  If the radio jumper cap is placed on the female cable end then the test adapter acts as taps into the lines.  If the jumper cap is not installed then the radio needs to be powered through the test adapter.

It's strange that pins K and N are not part of the test adapter.  If you know why let me know.


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