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D471

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ID = 49616
       
Country:
United States of America (USA)
Brand: DeForest-Tubes
Tube type:  Triode, vacuum   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to D471
Similar Tubes
Normally replaceable-slightly different:
  UX171

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Filament Vf 5 Volts / If 0.5 Ampere / Direct / Battery =
Information source - - Manufacturers Literature   1927
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d471_so.png D471
Anonymous 10 Collector


Just Qvigstad
d471small.png
D471: own collection
Peter den Boer

 

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