Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 10470
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Tube type:  Double Diode-Pentode 
Identical to WD40
Similar Tubes
Heater different:

Base B9 British 9-Pin (Codex=Yk) Top contact with a cap.
Filament Vf 4 Volts / If 1 Ampere / Indirect
Description 4V heater NOT 2V as in the Roehren-Codex 1948/49.

General-purpose for RF IF and AF use. 

Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   Advertisement Nov 1935
WD40: O.J.
Ottó Jancsek

WD40: Tabu Röhren-Codex, 1948
Anonymous 15 Collector


from Just Qvigstad

You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]