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M.D.3A

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ID = 81487
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Triode, vacuum   Universal 
  <1925 very rare. ***
Identical to M.D.3A
Similar Tubes
Normally replaceable-slightly different:
  WD11

Was used by Radio/TV-reception etc.
Filament Vf 1.5 Volts / If 0.3 Ampere
Description

Is a dull filament tube, used for low frequency amplifier and detector. Made on an American W.D. 11 base. Box states 1.5 to 2.0 volts, not to run bright.  Anode 30 to 100 volts. 

 

wd11sockelbild_2_1_1~~2.png M.D.3A: Fin Stewart
Fin Stewart

Collection of

 
20200401_194741.jpg

M.D.3A
 

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