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WD30

Information - Help 
ID = 10469
       
Country:
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Developer: MO Valve Co. Ltd.; GB 
Tube type:  Double Diode-Pentode   RF/IF-Stage 
Identical to WD30
Similar Tubes
Heater different:
  WD40

Base B9 British 9-Pin (Codex=Yk) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 13 Volts / If 0.3 Ampere / Indirect
Description

General-purpose for RF IF and AF use.

 
Information source The Saga of Marconi Osram Valve   p. 149 & 335
- - Manufacturers Literature   Advertisement Nov 1935
History of the British Radio Valve to 1940
Taschenbuch zum Röhren-Codex 1948/49

s_208_g.gif WD30: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20


Just Qvigstad
Usage in Models 3= 1935 ; 2= 1936

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):5

Collection of

 
4f9e8f03_6d6f_4a97_bdee_1e18bccba221.jpeg

WD30
 

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