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СО-44so-44

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ID = 13025
       
Country:
Soviet Union
Brand: Common type USSR (SU) tube/semicond.
Tube type:  Screen-grid Tetrode   Power/Output 
Identical to СО-44

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Er)
Was used by Radio/TV-reception etc.
Filament Vf 3.6 Volts / If 0.22 Ampere / Direct
Information source Taschenbuch zum Röhren-Codex 1948/49   
Röhren-Vademecum; P.H. Brans; Antwerpen

so44_sock.png СО-44: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

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Just Qvigstad
so44_spec.png
СО-44: Grundig Rö-Tabu, zum M1, Band 3, 1948
Anonymous 15 Collector

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Usage in Models 1= 1933?

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

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