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ID = 74808
United States of America (USA)
Brand: Jenkins, J.E., & S.E. Adair; Chicago, IL
Developer: Western Electric Company Inc.; New York (NY) 
Tube type:  Triode, vacuum   Power/Output 
Identical to 205 = R205-D = 205D
Similar Tubes
Other base and data slightly different:

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Was used by Industrial
Filament Vf 4.5 Volts / If 1.6 Ampere / Direct / Specified voltage AND current AC/DC
Description This tube is fitted with a UX 4 pin base. The socket guide pin is adjacent to the grid pin so that the tube can be fitted into equipment using the Western Electric 205D tube. 
Dimensions (WHD)
incl. pins / tip
x x 54 mm / x x 2.13 inch
Information source - - Manufacturers Literature   Bulletin No 18 - July 1931

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