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History of Science Museum

Brimar Radio Valve Type 50CD6G and Carton, by Brimar, English, Mid 20th Century

Inventory Number 41092


Acknowledgement: © History of Science Museum, University of Oxford, inv.41092

Item type
Object
Provenance
Presented by the Marconi Corporation.
Primary inscriptions
"50CD6 / G" on exterior surface of bulb. "BRIMAR / B.V.A. / MADE IN ENGLAND" etched on exterior surface base.
Object type
Radio valve
Dimensions
Diameter: 55mm Height: 140mm
Inventory No
41092
Accession Number
2004-9/259

Description

Heater Beam Tetrode Radio Valve (or Tube) Type 50CD6G, in unmatching Pinnacle printed cardboard carton. Glass valve with single steel top cap, black plastic? base, eight steel base pins, and one black plastic? central base pin. Possibly three steel pins missing. With BVA (British Radio Valve Manufacturers Association) stamp on valve apron.