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438

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ID = 10825
       
Country:
United States of America (USA)
Brand:
Tube type:  Vacuum Pentode   Power/Output 
Identical to 438
Similar Tubes
Normally replaceable-slightly different:
  38

Base UY-Base, 5 Pins (USA, April 1927) (Codex=Hfo) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect
Information source Taschenbuch zum Röhren-Codex 1948/49   

s_228_g_6.gif 438: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20


Just Qvigstad
438.png
438: own collection
Peter den Boer

 

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