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E1980

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ID = 30035
       
Country:
Great Britain (UK)
Brand: Marconi's Wireless Telegraph Co. Ltd.
Developer: MO Valve Co. Ltd.; GB 
Tube type:  Triode-Heptode   Frequency converter 
Identical to E1980
Similar Tubes
Other shape (e.g. bulb type):
  X101
Heater different:
  E1969

Base Loctal-8, B8G (Sylvania, 1938)
Was used by Radio/TV-reception etc.
Filament Vf 19 Volts / If 0.1 Ampere / Indirect
Description

Developed at the Hirst Research Centre of GEC.

 
Information source Universal Vade-Mecum, Electron Valves and Semiconductor Devices   group 327, p. 760


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