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W408b_Helikon

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ID = 32115
       
Country:
Austria
Brand: Helikon, Helikonwerk, Ing. Richard Martinek; Wien
Tube type:  Triode, vacuum 
Identical to W408b_Helikon

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.08 Ampere / Direct / Battery =
Information source -- Original prospect or advert   
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren   

b4_base_pins~~649.png W408b_Helikon: Fin Stewart
Fin Stewart


Just Qvigstad
w408b.png
W408b_Helikon: Funk-Bastler 1928, Heft 32
Hartmut Völler

 

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