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439_Sparton

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ID = 68748
       
Country:
United States of America (USA)
Brand: Sparton-Cardon Tubes; Jackson MI
Tube type:  Vacuum Pentode   RF/IF-Stage 
  Ca. 1925 up to 1945 rare.
Identical to 439_Sparton
Similar Tubes
Normally replaceable-slightly different:
  39

Base UY-Base, 5 Pins (USA, April 1927)
Filament Vf 6.3 Volts / If 0.3 Ampere
Information source - - Manufacturers Literature   

239_pins~~1.gif 439_Sparton: Fin Stewart
Fin Stewart


Just Qvigstad
439.png
439_Sparton: own collection
Peter den Boer

 

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