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E415b

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ID = 15810
       
Country:
Austria
Brand: Helikon, Helikonwerk, Ing. Richard Martinek; Wien
Tube type:  Triode, vacuum   Universal 
Identical to E415b
First Source (s)
Jul.1928 : Funk Bastler 1928, Heft 32

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.15 Ampere / Direct
Information source Taschenbuch zum Röhren-Codex 1948/49   
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren   

e415b_sock.png E415b: Tabu Röhren-Codex, 1948
Anonymous 15 Collector


Just Qvigstad
e415b.png
E415b: Funk-Bastler 1928, Heft 32
Hartmut Völler

 
screenshot_20240114_121721_gallery.jpg

 

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