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HV4/1

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ID = 72857
       
Country:
Great Britain (UK)
Brand: Six Sixty (valves), The Electron Company Ltd.; London
Tube type:  Triode, vacuum   Power/Output 
Identical to HV4/1
Similar Tubes
Normally replaceable-slightly different:
  AC064

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.3 Ampere / Direct / Specified voltage AC/DC
Information source - - Manufacturers Literature   

b4_base_pins~~330.png HV4/1: Fin Stewart
Fin Stewart


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