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ID = 47293
United States of America (USA)
Brand: Western Electric Company Inc.; New York (NY)
Tube type:  Triode, vacuum   Universal 
Identical to CV2584 = 231D

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Filament Vf 3.1 Volts / If 0.06 Ampere / Direct / Battery =
Description Receiving triode, T8 bulb on four pin base wired like UX-199. Mu = 8.5, Gm 0.38 to 0.56mS. 4000 hours life expectancy; controlled microphonics. Grid and filament spring supported by glass bead from top of plate. Developed for Northern Electric as improved UX-199. 
Information source -- Original-techn. papers.   
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cv2584_so.png CV2584
Anonymous 10 Collector

Just Qvigstad

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