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D_Western

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ID = 28488
       
Country:
United States of America (USA)
Brand: Western Electric Company Inc.; New York (NY)
Tube type:  LOCKED OFF PART (CODE 9) - see in Notes   Audio Frequency 
Identical to D_Western = 201B_Western
Similar Tubes
Other base:
  201A_Western ; CW-186

Base UV-Base (4 Pins+Bayonet, USA 1914 WE)
Description

Project coding for 201A with 3 pin base and 201B with 4 pin base. Replaced by code H according to Tyne, p. 280

 
Information source Saga of the Vacuum Tube, Tyne   p.101


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