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QB3/500

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ID = 52484
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Transmitting Tetrode, air cooled 
  Ca. 1925 up to 1945 rare.
Identical to QB3/500

Filament Vf 11 Volts / If 10 Ampere
Dimensions (WHD)
incl. pins / tip
100 x 440 x mm / 3.94 x 17.32 x inch
Information source - - Manufacturers Literature   
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qb3500data1.png
QB3/500: own collection
Peter den Boer

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