BBC Portable Tone Source

Made:
circa 1930
maker:
British Broadcasting Corporation
Portable tone source

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Portable tone source
Science Museum Group
© The Board of Trustees of the Science Museum

Continuously variable 40Hz to 10 KHz in three ranges. R/C oscillator, battery or mains. 4 Valves. Missing main air-spaced variable capacitor and control knob.

Details

Category:
Television
Collection:
BBC Heritage Collection
Object Number:
2012-5118/103
Materials:
wood (unidentified), plastic (unidentified), metal (unknown) and electronic components
Measurements:
overall: 280 mm x 500 mm x 195 mm, 9.5 kg
type:
audio equipment