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D230B

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ID = 7706
       
Country:
Great Britain (UK)
Brand: Mazda = Valve (Tube) brand GB (see also France)
Tube type:  High-vacuum Rectifier 
Identical to D230B

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Filament Vf 4 Volts / If 0.5 Ampere / Direct
Information source Taschenbuch zum Röhren-Codex 1948/49   


Just Qvigstad
Usage in Models 1= 1931

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1
 

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