Receiver mod. BC-312 - U.S.A. 1940 - Supereterodyne with 6 bands, frequency coverage 1,5 - 18 MHz, receive in AM and CW modes.  Intermediate Frequency at 470 KHz, crystal filter,  BFO, use 8 tubesmetallic type with octal socket:  (4) 6K7, (2) 6L7, (1) 6C5, (1) 6R7, (1) 6F6, power supply 12 V with Dynamotor. External speaker mod. LS-3. My copy is dated 1944 and has an AC 115 V (mod. RA-20) power supply in place of the dynamotor.

Ricevitore mod. BC-312 - U.S.A. 1944 - Supereterodina a 6 bande, copertura in frequenza: 1,5 - 18 MHz, ricezione in AM e CW. Media frequenza a 470 kHz, filtro a cristallo, BFO, utilizza 8 valvole del tipo metallico con zoccolo octal: (4) 6K7, (2) 6L7, (1) 6C5, (1) 6R7, (1) 6F6, alimentazione a 12 V con Dynamotor. Altoparlante esterno mod. LS-3. Il mio esemplare e' datato 1944 e ha un alimentatore da rete a 115 V (mod. RA-20) al posto del dynamotor.

BC-312/ BC-342 schematic.