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CY42

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ID = 12637
       
Country:
France
Brand: Cyrnos (brand) - see also MCB
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to CY42
Similar Tubes
Normally replaceable-slightly different:
  B442

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. 20
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_20.png CY42: Telefunken Werkstattbuch
Wolfgang Bauer


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