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620T

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ID = 15400
       
Country:
Great Britain (UK)
Brand: Cossor, A.C.; London
Developer: Cossor, A.C.; London 
Tube type:  Triode, vacuum   Power/Output 
Identical to 620T
Similar Tubes
Normally replaceable-slightly different:
  HV65
Other base:
  620T_UX
First Source (s)
22.Nov.1935 : Wireless World (The), London (WW, 79)
Predecessor Tubes 600T  

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 6 Volts / If 2 Ampere / Direct / Specified voltage AC/DC
Information source Babani, International Radio Tube Encyclopaedia   p. 36 & 37
History of the British Radio Valve to 1940   p. 145 & 171
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49

b4_base_pins~~35.png 620T: Fin Stewart
Fin Stewart


Just Qvigstad
 

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