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2-409

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ID = 15145
       
Country:
Netherlands
Brand: Thermion; Lent (Nijmegen)
Tube type:  Triode, vacuum   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to 2-409
Similar Tubes
Normally replaceable-slightly different:
  B409
Production stop Feb.1938

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Filament Vf 4 Volts / If 0.2 Ampere / Direct / Battery =
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   1933

2438etcbase_5.png 2-409
Peter den Boer


Just Qvigstad
2409data.png
2-409: own collection
Peter den Boer

 

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