Quantcast Receiver-Transmitter Received Audio Signal Distribution, Including Crewmember Boxes

 

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Control, Intercommunication Set C-2296/VRC
Up
TM-11-5820-498-35 Radio Sets AN/VRC-53 AN/VRC-64 AN/GRC-125 and AN/GRC-160 and Amplifier Power Supply GROUPS 0A-3633/GRC and 3633A/GRC Manual
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Section II. RETRANSMISSION CIRCUIT FUNCTIONING


TM 11-5820-498-35
TO
From
Unit
Pin U . . . . . . . . . . . . . . . . . . . . . . .  Pin U
. . . . . . . . .. . . . . . .
CX-4723/VRC
J22, pin U . . . . . . . . . . . . . . . . . . . . . . . . . . .  J24, pin N
.................
MT-1029/VRC
J3, pin N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  J2, pin D
AM-2060(*)/GRC . . . . . . . . . . . . . . .
Pin D . . . . . . . . . . . . . . . . . . .
..................
CX-4655/GRC
J3, Pin D . . . . . . . . . . . . . . . . . . . . .  Module 22
Receiver-transmitter  . . . . . . . . . . . . . . .
VRC). Individual selector switches and volume
2-5. Receiver-Transmitter Received Audio Sig-
controls in the crewmember control boxes are
nal Distribution, Including Crewmember
used to select the signal to be monitored, and to
Boxes
adjust the audio signal level.
a. AM-2060 (*)/GRC Loudspeaker. Audio sig-
Received audio signals from the receiver-trans-
mitter are applied to the AM-2060(*)/GRC and
nals can be heard on the AM­2060(*)/GRC inter-
through the MT­1029/VRC, system cabling, and
nal loudspeaker when the SPKR switch is set to
the AM­1780/VRC, to the crewmember control
ON. Audio signals from the receiver-transmitter
boxes (C-2296/VRC, C-2297/VRC, and C-2298/
are applied to the loudspeaker as follows:
From
To
Unit
Module A25/A55 . . . . . . . . . . . . . . . . . . .
J3, pin B
Receiver-transmitter . . . . . . . . . . . . . .
Pin B
Pin B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.....................
CX-4655/GRC
Audio amplifier Q1, Q2
J2, pin B . . . . . . . . . . . . . . . . . . . . . . .
AM-2060(*)/GRC . . . . . . . . . . . . . . . . . . .
S1 (ON Position)
Audio amplifier Q1, Q2 . . . . . . . . . . .
Relay E1, terminals 2 and 1
S1 . . . . . . . .. . . . . . . . . . . . . . . . . . .
LS1 (through P1, J1)
Relay K1, terminal 1 . . . . . . . . . . . . .
b. Unmuted Audio Signals to Crewmember
ceiver-transmitter can be heard at the audio ac-
Control Boxes. When the crewmember control
cessory at the crewmember control boxes. Un-
box MONITOR switch is set to A position, un-
muted audio signals are distributed to the crew-
muted (full strength) audio signals from the re-
member control boxes as follows:
From
Item
To
Receiver-transmitter . . . . . . . . . . . . . .  Module A25/A55 . . . . . . . . . . . . . . . . . .
J3, pin B
CX-4655/GRC . . . . . . . . . . . . . . . . . . . . . .  Pin B . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pin B
AM-2060(*)/GRC . . . . . . . . .
J2, pin B . . . . . . . . . . . . . .
Audio amplifier Q1, Q2
Audio amplifier Q2 . . . . . . . . . . . . . . .
J3, pin S
MT-1029/VRC . . . . . . . . . . . . . . . . . . . . .  J24, pin S . . . . . . . . . . . . . . . . . . . . . . . .
J22, pin H
CX-4723/VRC . . . . . . . . . . . . . . . . . . . . .
Pin H . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pin H
AM-1780/VRC . . . . . . . . . . . . . . . . . . . . . . . . . .  J3, pin H . . . . . . . . . . . . . . . . . . . . . . . .
K501, terminals 9 and 10
K501, terminal 10 . . . . . . . . . . . . . . . . .
J504, pin M
CX-4723/VRC . . . . . . . . . . . . . . . .  Pin M . . . . . . . . . . . . . . . . . . . . .
Pin M
C-2298/VRC . . . . . . . . . . . . . . . . . . . . . . .
J801, pin M . . . . . . . . . . . . . . . . . . . . . .
S801 (A position)
S801 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
R801 (VOLUME control)
R801 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J802 and J803, pins B and E to
audio accessory earphones
a
AM-1780/VRC . . . . . . . . . . . . . . . . . . . . .
K501, terminal 10 . . . . . . . . . . . . . . .  J505 (J506, J507), pin M
CX-4723/VRC . . . . . . . . . . . . . . . . . . . . .
Pin M . . . . . . . . . . . . . . . . . . . . . . . . .
Pin M
C-2297/VRC . . . . . . . . . . . . . . . . . . . . . . . . .
J904, pin M . . . . . . . . . . . . . . . . . . . . . . S902 (A position)
S902b . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  R902 (VOLUME control)
R902 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  J902 and J903, pins B and E to
audio accessory earphones
b
S902 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  S901 (EXT position)
J901, pin J
S901 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cable (fig. 4-6, note 7) . . . . . . . . . . . . . .
Pin J . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Pin J
J61, pin J . . . . . . . . . . . . . . . . . . . . . . . . R61 (VOLUME control)
C-2296/VRC . . . . . . . . . . . . . . . . . . . . . . . .
R61 . . . . . . . . . . . . . . . . . . . . . . . . . . . .  TB61, pin 5
TB61, pin 6 . . . . . . . . . . . . . . . . . . . .  H-207/VRC earphone
a
Indicates parallel connections from K501, terminal 10.
b
Indicates parallel connections from S902.
2-7


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