Mullard EF9 VM RF pentode valve (McVitie Weston valve collection), 1939

Mullard EF9 VM RF pentode valve (McVitie Weston valve collection), 1939 Mullard EF9 VM RF pentode valve (McVitie Weston valve collection), 1939

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

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

Mullard EF9 VM RF pentode valve, Ct8+tc base, red painted envelope marked 'SAMPLE', made by the Mullard Limited, Mitcham, London, England, 1939. McVitie Weston number = RMW/Y238

Details

Category:
Electronic Components
Object Number:
1972-141/1757
Materials:
glass, metal (unknown) and plastic (unidentified)
Measurements:
overall: 90 mm x 40 mm diameter,
type:
thermionic valve
credit:
Donated by STC plc