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VMP4G_5-pin

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ID = 70998
       
Country:
Great Britain (UK)
Brand: Gecovalve (Geco) = Brand of General Electric (GB)
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to VMP4G_5-pin
Similar Tubes
Other base:
  VMP4G
First Source (s)
1935 : History of the British Radio Valve to 1940 p. 196

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC
Description

This tube is a variable mu type.

 
Information source The Saga of Marconi Osram Valve   p. 335
Babani, International Radio Tube Encyclopaedia   p. 154 & 155
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49

b5_9_10.png VMP4G_5-pin: Fin Stewart
Fin Stewart


Just Qvigstad

Collection of

 
gecovalve_vmp4g_5pin_tube01.jpg

 

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