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O408b

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ID = 14577
       
Country:
Austria
Brand: Helikon, Helikonwerk, Ing. Richard Martinek; Wien
Tube type:  TRIODE (Detail uncertain) 
Identical to O408b

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Filament Vf 4 Volts / If 0.08 Ampere / Direct
Information source Taschenbuch zum Röhren-Codex 1948/49   

o408b_sock.png O408b: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

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Just Qvigstad
o408b.png
O408b: Funk-Bastler 1928, Heft 32
Hartmut Völler

 

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