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Front side connectors
The left connector is for the headset with a standard 10-way NATO plug.
The microphone is normally floating. Pushing the push-to-talk switch grounds one side of the
microphone.
The same connector can also be used for remote turn-on of the complete set , or a small cable
can be connected to a second PRC41 to create a relay station in order to bridge a larger distance
than possible with one set.
The basic PRC-41 has two of these 10-way connectors, all pins are connected in parallel.
The PRC-41A only has one 10-way connector. The other one is a 19-way connector
which connects to a Nestor KY38 speech scrambler. Added are two Collins "opamps" in the
RT695A/PRC-41A
to H
tel. plug
(ptt)
B
to C and
C
D
D
tel. plug
R
S
E
to K
F
tel. plug
(auto relay)
A
M
+26.5 V
L
N
P
to J tel. plug
(remote-on)
K
V
U
to A
tel. plug
T
J
(tel)
H
G
A
B
C
J
K
F
68k
5
26k
10uF
4
3
68k
5
26k
4
3
1
2
+26.5 V
opamps: COLLINS 350-011-010
A
B
C
J
K
F
Relay stations
interconnect cable
10nF
aux
audio
10k
guard Rx
output
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