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NA410O

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ID = 14541
       
Country:
Germany
Brand: Niggl-Hochvakuum-Industrie, Niggl-Audion; München
Tube type:  Triode, vacuum 
Identical to NA410O
First Source (s)
Sep.1927 : Funk Bastler 1927 Heft 39

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.1 Ampere / Direct / Battery =
Information source Taschenbuch zum Röhren-Codex 1948/49   

na410o_sock.png NA410O: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

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Just Qvigstad
na410o.png
NA410O: Funk-Bastler 1928, Heft 41
Hartmut Völler

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