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438

Information - Help 
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
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
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438: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe

 
438.png
438: own collection
Peter den Boer


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