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AC/VS

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ID = 12531
       
Country:
Great Britain (UK)
Brand: Hivac Ltd.; Harrow-on-the-Hill
Tube type:  Screen-grid Tetrode   RF/IF-Stage   Controlling (mu) 
Identical to AC/VS
Similar Tubes
Normally replaceable-slightly different:
  VMS4

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

Also made by Clarion and Graham Farish. Latter tube has electrical differences.

 
Information source Babani, International Radio Tube Encyclopaedia   p. 48 & 49
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 179, p. 310
Taschenbuch zum Röhren-Codex 1948/49

mpt4_so~~5.png AC/VS: Fin Stewart
Fin Stewart


Just Qvigstad
 

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