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ID = 46505
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Transmitting Triode, air cooled   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to DO40A

Base L4 British large 4 pin (1922, LG4)
Was used by Transmittertube (Radio)
Filament Direct / Specified voltage AC/DC

Mentioned on advertisement by Mullard, April 1932. Electrical data required

Dimensions (WHD)
incl. pins / tip
80 x 185 x mm / 3.15 x 7.28 x inch
Information source - - Manufacturers Literature   

l4_based_triode~~2.png DO40A: Peter den Boer
Fin Stewart

Just Qvigstad

Collection of

Collection of a member from GB


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