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H407spezS

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ID = 12747
       
Country:
Germany
Brand: Valvo GmbH, Radioröhrenfabrik; Hamburg
Tube type:  Screen-grid Tetrode 
Identical to H407spezS

Filament Vf 4 Volts / If 0.065 Ampere
Information source Taschenbuch zum Röhren-Codex 1948/49   

Usage in Models 1= 1929

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

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