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W31

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ID = 10449
       
Country:
Great Britain (UK)
Brand: MO Valve Co. Ltd.; GB
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to W31 = VPTS

Base British-7-Pin, old (M7A) (Codex=Nc) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 13 Volts / If 0.3 Ampere / Indirect
Information source The Saga of Marconi Osram Valve   p. 335
History of the British Radio Valve to 1940   p. 148 & 196
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49

158_17.png W31: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad
w31_characteristics.png
W31: My schematic collection.
Pier Antonio Aluffi

Usage in Models 5= 1935 ; 1= 1936? ; 7= 1936 ; 4= 1937

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):17
 
gb_w31_osram.jpg

 

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