Found in a 1945 magazine these circuits were intended to convert pre-war radios to receive the new FM and VHF bands that were expanding. The FM range at the time ranged from 84 to 102 MHz.

Found in a 1945 magazine these circuits were intended to convert pre-war radios to receive the new FM and VHF bands that were expanding. The FM range at the time ranged from 84 to 102 MHz.