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4XP

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ID = 15243
       
Country:
Great Britain (UK)
Brand: Cossor, A.C.; London
Tube type:  Triode, vacuum   Power/Output 
Identical to 4XP = LP4_Ferranti
Similar Tubes
Normally replaceable-slightly different:
  202_Ignix ; D404 ; RE604
First Source (s)
22.Nov.1935 : Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Direct / Specified voltage AC/DC
Information source Babani, International Radio Tube Encyclopaedia   p. 8 & 9
History of the British Radio Valve to 1940   p. 145 &171
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49
1_68.png 4XP: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad 		4xp_data.png
4XP: COSSOR VALVE MANUAL 1935-6
Jose Casas-Avalos
Usage in Models 1= 1935? ; 1= 1935 ; 3= 1937 ; 2= 1938 ; 6= 1939
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):13
 
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