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E200/300

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ID = 12703
       
Country:
France
Brand: Celsior (tubes), Radio-Celsior; Paris
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to E200/300
Similar Tubes
Normally replaceable-slightly different:
  B442 ; RES044
First year 1930 Saga of the Vacuum Tube, Tyne page 410

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Er) Top contact screw type.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.1 Ampere / Direct
Information source Röhren-Vademecum; P.H. Brans; Antwerpen   p. 33
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 150, p. 213
Taschenbuch zum Röhren-Codex 1948/49
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren

3_5~~5.png E200/300: Fin Stewart
Fin Stewart


Just Qvigstad
 

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