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70_Sparton

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ID = 68601
       
Country:
United States of America (USA)
Brand: Sparton-Cardon Tubes; Jackson MI
Developer: Sparton-Cardon Tubes; Jackson MI 
Tube type:  Wunderlich Tube   Detector 
  Ca. 1925 up to 1945 rare.
Identical to 70_Sparton
Similar Tubes
Normally replaceable-slightly different:
  70_Wunderlich

Base 6-Pin-Base U6A, old, USA
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Specified voltage AC/DC
Description

Special detector[b]

A triode with two equal grids and a single plate. Used as a full wave detector (am) with additional LF-amplification.

 
Information source - - Manufacturers Literature   

sparton_70_pin_ass.png 70_Sparton: Fin Stewart
Fin Stewart


Just Qvigstad
70_sparton.png
70_Sparton: own collection
Peter den Boer

 
sparton_70_tube_bm.jpg

 

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