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401_Hytron

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ID = 78817
       
Country:
United States of America (USA)
Brand: Hytron; Salem (MA)
Tube type:  Triode, vacuum   Audio Frequency 
  Ca. 1925 up to 1945 very rare. ***
Identical to 401_Hytron
Similar Tubes
Different connections:
  401_McCullough

Base UX-Base (4 Pins (2 thick, USA 1924, UX) 2 Sidecontacts
Was used by Radio/TV-reception etc.
Filament Vf 3 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC)
Literature -- Collector info (Sammler)   
 
hytron_401_bm.jpg
401_Hytron: Bob Millard collection
Fin Stewart

 
401_ac_tube_connections~~1.png
401_Hytron: Fin Stewart
Fin Stewart

 

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