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AC-detector_Sparton

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ID = 57215
       
Country:
United States of America (USA)
Brand: Sparton-Cardon Tubes; Jackson MI
Tube type:  Triode, vacuum   Detector 
  Ca. 1925 up to 1945 rare.
Identical to AC-detector_Sparton
First Source (s)
1926 : -- Collector info (Sammler)
Successor Tubes AC-373  

Base UX-Base (4 Pins (2 thick, USA 1924, UX) 2 Sidecontacts
Was used by Radio/TV-reception etc.
Filament Indirect / Parallel, (AC/DC)
Description

the sidecontacte are the filament connections.

 
Literature -- Collector info (Sammler)   
 
181_373_401base.png
AC-detector_Sparton: own collection
Peter den Boer

 

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