[Milsurplus] The ARC-21 and ARR-36

[BSugarberg]

AN/ARC-21
Radio set, 2-24 MHz, A1, A2, F1 emissions, Power output 100 watts RF, Long 
range airborne comm equipment, remotely operated and controlled, presurized, 
Automatically tunes and loads into fixed wire and flush-mounted antennas, 20 
preset channels at any 500 Hz increment, Will work crosschannel with 
receiver AN/ARR-36. Used with B-52 and C-130 aircraft. Replaced by 
AN/ARC-65. 27vdc 60 amp. TO: 12R2-2ARC21, Major components:

RT-128/ARC-21
Receiver-Transmitter, 2-24 MHz, A1, A2, A3, F1 emissions, Power output: 100 
watts RF, Long range airborne comm equipment, remotely operated and 
controlled, presurized, Automatically tunes and loads into fixed wire and 
flush-mounted antennas, 20 preset channels at any 500 Hz increment, Part of 
AN/ARC-21, Will work crosschannel with receiver AN/ARR-36, Used with B-52 
and C-130 aircraft, Replaced by AN/ARC-65, 27 VDC @ 60 amp, TO: 12R2-2ARC21.

C-451/ARC-21
Control box, Part of AN/ARC-21 and AN/ARR-36.

C-455/ARC-21
Control box, Part of AN/ARC-21 and AN/ARR-36.

AN/ARR-36
Radio receiving set, HF, 2-24 MHz, 500 Hz steps in 4 bands. Reception: A1, 
A3, F1. May be operated independently of any other comm equipment. May be 
used in cross-channel operation with AN/ARC-21. Construction: 
subminiaturized. Freq stability: 0.0015% or 250 Hz. Tuning: completely 
automatic to any one of 44,000 freqs. C-451/ARC-21 and C-455/ARC can be used 
without change in wiring to 20 preset freq operations. Used with B-52 and 
B-58A aircraft. 27.5 vdc. TO: 12R2-2ARC21.