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X42

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ID = 2807
       
Country:
Great Britain (UK)
Brand: MO Valve Co. Ltd.; GB
Tube type:  HEPTODE   Frequency converter 
Identical to X42

Base British-7-Pin, old (M7A) (Codex=Ne) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.6 Ampere / Indirect / Specified voltage AC/DC
Information source The Saga of Marconi Osram Valve   p. 335
History of the British Radio Valve to 1940   p. 148 & 198
Wireless World (The), London (WW, 79)
Taschenbuch zum Röhren-Codex 1948/49

165_7.png X42: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad
Usage in Models 1= 1936 ; 1= 1937? ; 15= 1937 ; 1= 1938

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):18
 

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