Radio Receiver & Transmitter BC-322

Part of the SCR-195 radio system, manufactured for the United States Army Signal Corps.

• Principle: transceiver, manpack
• Operation modes: AM (A3)
• Frequency range: VHF 52 - 66 MHz
• Frequency display: analogue dial
• Frequency memory: none
• Signal strength indicator: S-meter
• Signal processing:
• Features:
• Sensitivity AM approx. 10 μV
• Transmission power: 100 mW

• Rechargeable battery / battery operation: Heater and anode battery BA-32 (heater voltage 3 V, anode voltage 144 V, grid voltage 13.5 V, microphone voltage 4.5 V).

• 140 x 200 x 220 mm

• Handset TS-11-E (resp. TS-11-(*))
• Antenna AN-30-B
• Battery BA-32
• Canvas bag BG-71
• Chest CH-33 with spare parts and accessories for vehicle operation
• Vehicle antenna material Mast Base MP-22, Mast Section MS-50 and MS-51

The BC-322 / SCR-195 is a very early compact small infantry radio, which was developed by the U.S. Army Signal Corps around 1938. The AM transceiver operates in the VHF band and has a VFO tunable from 52 to 66 MHz.

For portable operation, the radio was carried in a canvas bag, the antenna was screwed to the antenna base on top of the set, the matching BA-32 battery was attached to the bottom of the radio with two straps, and the TS-11-A handset was usually used with the set.

The BC-222 / SCR-194 with a very similar design transmits in the 28 - 52 MHz range and was used by the artillery, usually with a T-24 microphone and HS-22 headphones.

In transmit mode, the VT-67 works as a Hartley oscillator, the VT-33 as a modulator tube. In receive mode, the VT-67 works as a receive detector in a super regenerative circuit (audion) and the VT-33 as an audio amplifier tube.

The set is equipped with a VT-67 and a VT-33.

• TM 11-238 (SCR-194 / SCR-195)

The set was developed at the Signal Corps Laboratories, Fort Monmouth and built by various companies as contractors.
It was used for communication within an infantry regiment.

• Radio Receiver and Transmitter BC-322 on the website of www.radiomuseum.org