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Tubular-single-plate

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ID = 57842
       
Country:
United States of America (USA)
Brand: DeForest-Tubes
Developer: DeForest-Tubes 
Tube type:  TRIODE (Detail uncertain)   Detector 
  <1925 very rare. ***
Identical to Tubular-single-plate

Base Wires
Filament Direct / Battery =
Description This is a tubular Audion with a single plate. It is used in a Wallace Valve detector and it is pictured in an advertisement in Modern Electrics of August 1913. The T(ubular) Audion of DeForest became available in April 1916 in responce to the 1915 Cunningham Audiotron. Both had a cylindrical anode. 
Text in other languages (may differ)
 
usa_deforest_audions2.jpg
Tubular-single-plate: internet
Peter den Boer

 

Usage in Models 1= 1911

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1

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