Quantcast AM1780/VRC MAIN PWR Switch at NORM Position.

 

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System Power Distribution, Including Crew-member Control Boxes
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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Receiver-Transmitter Control of Radio Transmission and Microphone Signal Distribution, including Crewmember Control Boxes


TM 11--5820-498-35
(1) Power distribution to OA-3633/GRC,
out the radio and crewmember control boxes in
receiver-transmitter, and MX2799/VRC or MX
system.
6707/VRC.
a . AM1780/VRC MAIN PWR Switch at
NORM Position.
To
Unit
From
J22, pin B
CX-1029/VRC .. . . . . . . . . . . . . . . . .
J21, pin B . . . . . . . . . . . . . . . . . . . . . . .
Pin B
MT-4723/VRC . . . . . . . . . . . . . . . . . . . .
Pin B . . . . . . . . . . . . . . . . . . . . . . . . . . .
Switch S504, rear (NORM position)
J501, pin B . . . . . . . . . . . . . . . . . . . . . .
AM-1780/VRC . . . . . . . . . . . . . . . . . . . . . .
J501, pin D
Switch S504, rear . . . . . . . . . . . . . . . .
Pin D
Pin D . . . . . . . . . . . . . . . . . . . . . . . . . . .
CX-4723/VRC . . . . . . . . . . . . . . . . . . . . .
J24, pin J
MT-1029/VRC  . . . . . . . . . . . . . . . . . . . . .
J22, pin D . . . . . . . . . . . . . . . . . . . .
J3, pins J and Ca. . . . . . . . . . . . . . . . .
Switch S2, front and rear
AM-2060(*)/GRC . . . . . . . . . . . . . . . .
J4 (pins used depend on setting of
Switch S2 . . . . . . . . . . . . . . . . . . . . . . .
S2)
Q1, Q2, Q3, and Q4, and R17
J3, pins J and Ca . . . . . . . . . . . . . . . .
J2, pin B
Q1 and Q2 . . . . . . . . . . . . . . . . . . . . . .
J2, pins E and M
Q3 and Q4 . . . . . . . . . . . . . . . . . . . . . . .
J2, pin H
R17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J2, pins N and C
K1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FL1 or FL2, pin B; to audio
Receiver-transmitter . . . . . . . . . . . . . . . J3, pin B . . . . . . . . . . . . . . . . . . . . . . .
accessory earphone
Chassis ground
J3, pin A . . . . . . . . . . . . . . . . . . . . . . . .
A10, only in RT-505/PRC-15
J3, pin M . . . . . . . . . . . . . . . . . . . . . . . .
V1 filament in RT-505/PRC-25
J3, pin H . . . . . . . . . . . . . . . . . . . . . . . .
only when K2 is operated by
closure of audio accessory push-
to-talk switch
K1 and K3
J3, pin N . . . . . . . . . . . . . . . . . . . . . . . .
K1 and K2 to audio accessory
J3, pin C . . . . . . . . . . . . . . . .
push-to-talk switch. Switch
operation will key K1 and K2
to set up receiver-transmitter in
transmit mode
Pins used depend on setting of S2
CX-4722/VRC . . . . . . . . . . . . . . . . . Pins used depend on setting of S2 . . . . .
Pins used depend on setting of S2
MX-2799/VRC or MX-6707/VRC . . . . . J551; pins used depend on setting of
S2.
Indicates parallel connetions from J3, with CB1 in ON position.
(2) Power distribution through AM-1780
/VRC and crewmember control boxes.
Unit
To
From
MT-1029/VRC . . . . . . . . . . . . . . . . . . . . . . . .
J22, pin B
J21, pin B . . . . . . . . . . . . . . . . . . . .
CX-4723/VBC . . . . . . . . . . . . . . . . . . . . . .
Pin B . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Pin B
J501, pin B . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  S504, rear
AM-1780/VRC . . . . . . . . . . . . . . . . . . . . . .
S504, rear . . . . . . . . . . . . . . . . . . . . . . . . . . .  J501, pin D
CX-4723/VRC . . . . . . . . . . . . . . . . . . . . .
Pin D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Pin D
MT-1029/VRC . . . . . . . . . . . . . . . . . . . . . .
J22, pin D . . . . . . . . . . . . . . . . . . . . . . .  J24, pin D
AM-2060(*)/GRC . . . . . . . . . . . . . . . . . . . . . .
J3, pin J . . . . . . . . . . . . . . . . . . . . . . . . . . .  J3, pin C through CB1
MT-1029/VRC . . . . . . . . . . . . . . . . . . . . . . . . .
J24, pin C . . . . . . . . . . . . . . . . . . . . . . .  J22, pin C
CX-4723/VRC . . . . . . . . . . . . . . . . . . . .
Pin C . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Pin C
AM-1780/VRC . . . . . . . . . . . . . . . . . . . . .
J501, pin C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  S504, pin C
S504, front . . . . . . . . . . . . . . . . . . . . . . . . . . .  CB501
CB501 . . . . . . . . . . . . . . . . . . . . . . . . .  J504, pin C
CX-4723/VRC . . . . . . . . . . . . . . . . . . . . . .
Pin C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Pin C
C-2298/VRC . . . . . . . . . . . . . . . . . . . . . . . . . .
J801, pin C . . . . . . . . . . . . . . . . . . . . . .  Amplifier A80
AM-1780/VRC . . . . . . . . . . . . . . . . . . . . . . . .
CB501 . . . . . . . . . . . . . . . . . . . . . . . . .  J505 (J506,J507), pin C
Pin C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . Pin C
CX-4723/VRC . . . . . . . . . . . . . . . . . . . . .
J904, pin Cb . . . . . . . . . . . . . . . . . . . .  Amplifier A80
2297/VRC . . . . . . . . . . . . . . . . . . . . . . . . . . .
J904, pin Cb . . . . . . . . . . . . . . . . . . . . .  S901, rear (EXT position)
S901, rear . . . . . . . . . . . . . . . . . . . . . . . .  J901, pin C
See footnote at end of table.
2-3


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