Detailed Description

Vintage Mallory G-1501 12-volt, 4-prong electromechanical interrupter vibrator in original box. Manufactured by Mallory in the USA (stamped Melvin Inst). These mechanical DC choppers were standard equipment in 1950s and 1960s 12V automotive tube radios, communications receivers, and mobile transmitters (such as Regency, Gonset Communicator, and classic car radios) to convert 12V DC into high-voltage B+ plate power.

Specifications & Details:

·       Part Number: G-1501 (G1501)

·       Original Manufacturer: P.R. Mallory & Co. Inc.

·       Distributor / Stamp: Melvin Inst.

·       Device Type: Non-Synchronous Electromechanical Vibrator / Interrupter

·       Operating Voltage: 12 VDC (12V–13.5V nominal)

·       Base / Pin Configuration: Standard 4-Prong Plug-In Base (2 thick pins, 2 thin pins)

·       Housing: Can-type metal enclosure with interior sound-dampening insulation

·       Applications: Vintage 12V tube car radios, mobile amateur / ham radio gear, CB transceivers, vintage restoration