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APP4A

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ID = 10939
       
Country:
Hungary
Brand: Tungsram; Budapest (see also British T.)
Tube type:  Vacuum Pentode   Power/Output 
Identical to APP4A
Similar Tubes
Normally replaceable-slightly different:
  MP/Pen
Other base:
  APP4A_5PIN ; APP4As
Other base and other heater:
  AL2
Base British-7-Pin, old (M7A) (Codex=Ndo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1.2 Ampere / Indirect / Specified voltage AC/DC
Information source Taschenbuch zum Röhren-Codex 1948/49   
Babani, International Radio Tube Encyclopaedia   p. 50 & 51
- - Manufacturers Literature
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
s_406_g.gif APP4A: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20

Just Qvigstad 		app4a_characteristics.png
APP4A: My schematic collection.
Pier Antonio Aluffi
Usage in Models 1= 1935?
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1
 
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