BBC OBA/7 Outside Broadcast Audio Amplifier

BBC OBA/7 Outside Broadcast Audio Amplifier

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BBC OBA/7 Outside Broadcast Audio Amplifier
Science Museum Group
© The Board of Trustees of the Science Museum

BBC OBA/7 Outside Broadcast Audio Amplifier, c.1928.

Designed for general outside broadcast use. Valve operated from a 12 volt supply with high-tension supply from motor-generator. By the late 1930s, the extremely heavy OBA/7 was replaced by the OBA/8 amplifer.

Details

Category:
Television
Collection:
BBC Heritage Collection
Object Number:
2012-5118/5
Materials:
metal (unknown), plastic (unidentified) and electronic components
Measurements:
overall: 346 mm x 752 mm x 288 mm, 27.5 kg
type:
amplifier