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D20/2

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ID = 14043
       
Country:
Germany
Brand: Spanner GmbH, Marken: Delta Valve, Altron, Neo-Delta; Berlin
Tube type:  Triode, vacuum   Power/Output 
Identical to D20/2
First Source (s)
Jul.1928 : Funk Bastler 1928, Heft 31

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.1 Ampere / Direct
Information source Taschenbuch zum Röhren-Codex 1948/49   

b4_base_pins~~875.png D20/2: Fin Stewart
Fin Stewart


Just Qvigstad
d202.png
D20/2: Funk-Bastler 1928, Heft 41
Hartmut Völler

 

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