Wireless Equipment, Radio Receiver Type RA-1B: American
RAF Receiver Type RA-1B. Serial Number S5331. Made by Bendix Radio Corporation, USA.
The Bendix RA-1B Aircraft HF Receiver covered 150-1500 Kc/s and 1.8 Mc/s in six bands, with inputs for fixed and trailing aerials and a D/F loop and facilities for local oo remote control.
The RA-1 was used in USAAF aircraft such as the Hudson during 1941-45. It could be either locally or remotely controlled and was powered from an aircraft's 12 or 24v DC supplies using a dynamotor unit to generate the high voltages required.