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P20

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ID = 16138
       
Country:
France
Brand: Grammont (Radiofotos, Fotos); Paris, Malakoff
Tube type:  Triode, vacuum   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to P20
Similar Tubes
Normally replaceable-slightly different:
  F704
Multiple differences or of other kind:
  RV218

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Filament Vf 7.5 Volts / If 1.5 Ampere / Direct
Description

Used as modulator and LF power amplificator.

 
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   2-9-1933
- - Manufacturers Literature

b9small_4.png P20: own collection
Peter den Boer


Just Qvigstad
p20datasmall.png
P20: own collection
Peter den Boer

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