AN/VRC-12- Series

was the
standard mobile radio from the Vietnam War (1965) to the 90s.
The radios were used together with AN/PRC-25 and AN/PRC-77 Manpacks, used from the 60s to th 80s.
It consists of three main components:
(The collection contains all three radios.)

RT-246A/VRC, a transceiver with 10 preset channels without loudspeaker; [ < click ]

RT-524A/VRC, a transceiver without presets but with loudspeaker [ < click ]

R-442A/VRC, auxiliary receiver [ < click ]

The radios were put together in different combinations, thus forming radio sets
AN/VRC-12 and VRC-43 to VRC-49.

.	VRC-12	VRC-43	VRC-44	VRC-45	VRC-46	VRC-47	VRC-48	VRC-49
RT-246	1	1	1	2	0	0	0	0
RT-524	0	0	0	0	1	1	1	2
R-442	1	0	2	0	0	1	2	0

Explanation of the chart:
A radio plus mounting is the radio set.
VRC-12 consists of one RT-246 (plus mouting) and one RT-242 (plus mounting);
VRC-43 consists of one RT-246 (plus mounting). (and so on)

The series usually is called AN/VRC-12- series.

Accessories:
The Mounting MT-1029 is used for RT-246 and RT-524.
(MT-1029 also holds the power supply & audio amplifier AM-2060 for
PRC-25 and PRC-77).
the Mounting MT-1898 is used for R-442.
Both mountings contain some electric elements.
Other accessories are: Power supply, radio control boxes, transient and mini transient suppressor, cables, antennas, audio accessories etc.

VRC-12 replaces radio sets AN/GRC-3 to AN/GRC-8.
 

Frequency range:

30.00 ... 75.95 MHz in 2 ranges

Channels:

920

Channel spacing:

50 KHz

Frequency contol:

Crystal

HF output:

Low: 8 W; High: 35 W

Squelch:

New = 150 Hz; Old = noise

Sensitivity:

0.5 µV / 10 dB

Mode:

F3

Audio- frequency:

500 ... 3000 Hz

Powered by:

22 .. 30 V

Power consumption:

Transmitting 9.5 A @ 26.5 V

Receiving 0.75 A @ 26.5 V

Weight:

26.3 kg

Year of issue:

1965

Replaces:

AN/GRC-3 to AN/GRC-8