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728T

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ID = 18340
       
Country:
United States of America (USA)
Brand: Western Electric Company Inc.; New York (NY)
Developer: Western Electric Company Inc.; New York (NY) 
Tube type:  Pulse magnetron   UHF 
Identical to 728T = 4J51
Predecessor Tubes 728IY   728FY   728JY   728BY   728CY   728HY   728AY   728GY   728DY   728EY  

Was used by Radar
Filament Vf 14.5 Volts / If 3.4 Ampere / Direct
Description Cavity magnetron, tunable in the band from 900 to 970MHz. 275KW. Coaxial output; external magnet. 
Information source Tube Lore (I)   

4j51_1.png
728T: Manufacturer's Literature
Emilio Ciardiello

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