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BA9

Information - Help 
ID = 13825
       
Country:
France
Brand: Grammont (Radiofotos, Fotos); Paris, Malakoff
Tube type:  TRIODE (Detail uncertain) 
Identical to BA9

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Filament Vf 1.7 Volts / If 0.06 Ampere / Direct
Description Im "Amateur Wireless 23.9.1929" wird Uf= 1,9V bei If= 0.05A angegeben. 
Information source Taschenbuch zum Röhren-Codex 1948/49   
 
ba9_sock.png
BA9: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

 

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