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Audion_05-unbased

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ID = 74665
       
Country:
United States of America (USA)
Brand: DeForest-Tubes
Developer: DeForest-Tubes 
Tube type:  Triode, vacuum   Audio Frequency 
Identical to Audion_05-unbased
Similar Tubes
Other base and data slightly different:
  Audion_06-triode

Base Wires Wires only.
Was used by Radio/TV-reception etc.
Filament Direct / Battery =
Description This tube was the second type of triode made by H. W. McCandless & Co for the de Forest company. It was tubular (T-8 bulb, 25 mm diameter) double ended, about three inches long, and had the filament connections from one end and the anode and grid from the other end. Very little has been found on this tube and it is not mentioned in Tyne's "Saga of the vacuum Tube". One existing tube of this style shows that it has a double filament, with a third filament lead-in wire. 
Dimensions (WHD)
incl. pins / tip
x x 25 mm / x x 0.98 inch

 
audion_05_triode_baseless.jpg

 

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