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VT18_GPO

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ID = 62887
       
Country:
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Developer: Marconi-Osram - (Valves/Tubes); GB 
Tube type:  Transmitting Triode, air cooled   Text 
  <1925 very rare. ***
Identical to VT18_GPO

Was used by Telephony
Filament Direct
Description

Transmitting tube designed in 1922 for use by the British Post Office. No other details available.

 
Information source British Radio Valves - The Vintage Years: 1904-1925   Pages 83 and 133

 

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