Transmitting valve type TT4A, 1919-1922

Made:
1919-1922 in England
maker:
M-O Valve Company Limited

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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

Transmitting valve type TT4A, made by M-O Valve Company Limited, England, 1919-1922. Transfer logo on the valve reads "VALVE WRLESS TANSMITTING, PATT NO. 5199A, TT4A". On the reverse it reads "MANUFACTURED BY THE M.O. VALVE CO. LTD. MADE IN ENGLAND".

Details

Category:
Electronic Components
Object Number:
1922-433
Materials:
brass (copper, zinc alloy), glass, metal (unknown), plastic (unidentified), textile and wood (unidentified)
type:
thermionic valve
taxonomy:
  • component - object
credit:
Donated by the M. O. Valve Company Limited

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