Mostyl Crystal set Radio Receiver

Made:
1923-1926 in Birmingham
Mostyl Crystal set radio receiver, complete with BBC logo Mostyl Crystal set Radio Receiver

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Mostyl Crystal set radio receiver, complete with BBC logo
Science Museum Group
© The Board of Trustees of the Science Museum

Mostyl Crystal set Radio Receiver
Science Museum Group
© The Board of Trustees of the Science Museum

Mostyl Crystal set radio receiver, complete with BBC logo, manufactured by Gramostyles Ltd of Birmingham between 1923-1926.

The crystal set was a simple radio receiver which did not need any power to make it work. It only received AM, amplitude modulated, signals. The crystal, with a point contact, called a cats whisker as that was what was sometimes used, on its surface, created a diode action rectifying the carrier wave so making it possible to hear the audio signal which was modulated onto it.

Details

Category:
Television
Collection:
BBC Heritage Collection
Object Number:
2012-5118/854
Materials:
wood (unidentified), plastic (unidentified) and metal (unknown)
Measurements:
overall: 185 mm x 166 mm x 166 mm, 1.1 kg
type:
radio receiver