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ID = 35517
Tube type:  Pulse magnetron   UHF 
Identical to 2J30 = VT-257 = K-7 = CV3944

Filament Vf 6.3 Volts / If 1.5 Ampere / Half indirect
Description 2860 to 2900 MHz, fixed frequency. 20KV at 30A peak (30mA average), 285KW pulse output. Forced air cooling.
EEV, Raytheon, Thomson known manufacturers. 
Information source - - Manufacturers Literature   
Tube Lore (I)   
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2J30: Manufacturer's Literature
Emilio Ciardiello

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