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283A

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ID = 35391
       
Country:
United States of America (USA)
Brand: Western Electric Company Inc.; New York (NY)
Tube type:  Dual-Grid Tetrode 
Identical to 283A
Similar Tubes
Other characteristic (electr. data):
  259A

Base UY-Base, 5 Pins (USA, April 1927) Top contact with a cap.
Filament Vf 2 Volts / If 1.6 Ampere
Description Variable mu version of 259A, low microphonics, high Gm receiving tetrode. 
Information source Tube Lore (I)   
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western_electric_283a_e1119.jpg

283A
 

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