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D100_4pin

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ID = 37231
       
Country:
France
Brand: Grammont (Radiofotos, Fotos); Paris, Malakoff
Tube type:  Vacuum Pentode   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to D100_4pin
Similar Tubes
Normally replaceable-slightly different:
  B443_4pin

Base Europe 4-Pin (A, 4A, B4, since 1914) Sidecontact
Filament Vf 4 Volts / If 0.15 Ampere / Direct / Battery =
Literature -- Collector info (Sammler)   
- - Manufacturers Literature   2-9-1933
 
d100~~2.jpg
D100_4pin: Ma collection
Christian ADAM

 
miniwattsmall2_5.png
D100_4pin: own collection
Peter den Boer



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