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APP4C

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ID = 10943
       
Country:
Great Britain (UK)
Brand: British Tungsram Radio Works Ltd.
Developer: British Tungsram Radio Works Ltd. 
Tube type:  Vacuum Pentode   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to APP4C = CV1684 = CV1685 = VT116_GPO = VT116A_GPO
Similar Tubes
Heater different:
  PP36
Different connections:
  APP4G

Base British-7-Pin, old (M7A) (Codex=N)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 2 Ampere / Indirect / Specified voltage AC/DC
Information source Taschenbuch zum Röhren-Codex 1948/49   
Babani, International Radio Tube Encyclopaedia   Pages 50 & 51
Universal Vade-Mecum, Electron Valves and Semiconductor Devices

s_407_g.gif APP4C: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20


Just Qvigstad
Usage in Models 2= 1935? ; 1= 1935 ; 6= 1936?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):9

Collection of

 
app4c.jpeg

 

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