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
A
B
C
E
F
G
H
J
K
L
M
N
P
R
S
T
U
V
D
26k
68k
10k
aux
audio
guard Rx
output
to C and
D
tel. plug
to H
tel. plug
(ptt)
+26.5 V
to K
tel. plug
(auto relay)
to A
tel. plug
(tel)
to J tel. plug
(remote-on)
10nF
26k
68k
1
2
3
4
5
+26.5 V
opamps: COLLINS 350-011-010
10uF
4
5
3
A
B
C
J
K
F
A
B
C
J
K
F
Relay stations
interconnect cable