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ID = 32653
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: Machlett Labs; USA (tubes) 
Tube type:  Transmitter Triode, liquid-cooling   Power/Output 
Identical to 5658 = ML5658
First year 1948 Radio News
First Source (s)
Oct.1948 : Electron Tube Registration List
Predecessor Tubes 880  

Filament Vf 12 Volts / If 290 Ampere / Direct

All glass construction with external folded anode RF power triode. Pure tungsten, stress-free cathode. The tube requires forced-water cooling. 20KW anode power dissipation. It has been designed for industrial heating, but can be used as amplifier or oscillator. Operates up to 15MHz at full ratings and up to 45MHz at reduced anode voltage. 5658 was made by several US manufacturers, including Amperex, Federal, Machlett, Westinghouse and Sylvania. Also Fivre, Italy.

Weight 3200 g / 112.88 oz
Information source Tube Lore (I)   
- - Manufacturers Literature   
Radio News
5658: Manufacturer's Literature
Emilio Ciardiello

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