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BD9

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ID = 36382
       
Country:
France
Brand: Grammont (Radiofotos, Fotos); Paris, Malakoff
Tube type:  Triode, vacuum   Power/Output 
Identical to BD9

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 1.9 Volts / If 0.2 Ampere / Direct / Battery =
Information source - - Manufacturers Literature   Amateur Wireless 23.9.1929


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bd9.jpg

 

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