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GENRAD MODEL 533 (1933)

The Genrad model 533 was manufactured for General Radio Ltd by General Radio Ltd in 1933.

5-valve broadcast band radio

Technical Information

Valves (5): 57, 58, 57, 42, 80

Intermediate Frequency: 455

Frequency Bands: 1

Chassis Notes(most schematics can be clicked to download a full size version) Mixture of 2.5V and 6.3V valves. The dial bulb is 2.5V. The oscillator section of the tuning gang is smaller than the antenna section, and there is no padder in the oscillator circuit.

1933 Genrad model 533

General Construction Notes for General Radio Ltd:

Chassis' appear to have been lightly chrome plated, valve identification is often stamped in black ink on the back of the chassis.  An ID tag showing General Radio Ltd and the model code / serial number seems to be on the back of all sighted examples.