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ID = 28452
United States of America (USA)
Brand: Western Electric Company Inc.; New York (NY)
Developer: Western Electric Company Inc.; New York (NY) 
Tube type:  Transmitting Triode, air cooled   Power/Output 
Identical to CW-1818A = 211D
First year 1924 ?? Saga of the Vacuum Tube, Tyne Seite 289

Base Jumbo 4-pin bayonet (1918)
Was used by Military and/or Government
Filament Vf 10 Volts / If 3.4 Ampere / Direct
Information source Tube Lore (II)   p. 182 & 234
Saga of the Vacuum Tube, Tyne   p. 289

vt4c_25.png CW-1818A: Manufacturer's Literature
Emilio Ciardiello

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