Quartz crystal

SMG00313637 Quartz crystal, mounted

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SMG00313637
Science Museum Group
© The Board of Trustees of the Science Museum

Quartz crystal, mounted
Science Museum Group
© The Board of Trustees of the Science Museum

Quartz crystal, mounted, for control of amateur radio transmitter (f: 7144 kc,42.02m) c. 1930

Details

Category:
Radio Communication
Object Number:
1972-410
type:
transmitter
credit:
Powderly, L.B.