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8974
8974 / X-2159 is a power tetrode designed for megawatt power levels in industrial and broadcast applications. == Specifications ==
The 8974 is an external anode tube made of metal and ceramic. It has an overall height of 23.75 inches (603 mm), a diameter of 17.03 inches (433 mm), and weighs 175 pounds (80 kg). It contains a directly heated thoriated-tungsten filament rated at 16.3 volts at approx. 625 amperes. The anode is designed to dissipate 1.25 megawatts, approximately 1700 horsepower (1.25 MW * (1341 hp/MW) = 1676 hp). The tube may be operated as a class C amplifier, where a single tube with an anode voltage of 22.5 kV DC can provide up to 2,158 kilowatts of RF power. 〔 Data sheet for the Eimac 8974 / X-2159 〕
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