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203A_UV4

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ID = 30557
       
Country:
United States of America (USA)
Brand: Western Electric Company Inc.; New York (NY)
Developer: Western Electric Company Inc.; New York (NY) 
Tube type:  Triode, vacuum   Universal 
Identical to 203A_UV4 = CW-933 = J_Western = VT-1
Successor Tubes 203B_Western  

Base UV-Base (4 Pins+Bayonet, USA 1914 WE)
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 1.1 Ampere / Direct / Battery =
Description

This tube, from WWI, had "iron-clad" electrode structure, with grid punched from nickel sheet, plate ribbed for rigidity and CuNiFe alloy filament.
Also known as VT-1, Signal Corps, or CW-933, U.S. Navy coding. Tube Lore II, p. 234, states that the filament was platinum, for patent reasons

 
Tube prices 1 Tube prices (visible for members only)
Information source Saga of the Vacuum Tube, Tyne   p.99
Tube Lore (I)   Supplement S9
Tube Lore (II)

uv~~113.png 203A_UV4: Fin Stewart
Fin Stewart


Just Qvigstad

Collection of

 
203a_vt1.jpg

 

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