Jingguang brand FU-801F electronic tube is an oxide collecting cathode, metal-ceramic structure, and anode air-cooled triode. The maximum operating frequency is 350MHz, the maximum dissipation power of the anode is 800W, and the maximum dissipation power of the grid is 4W. It is used for cathode-excited Class AB2 or Class B amplifiers, including RF amplifiers in the VHF band, and can also be used for pulse modulators or pulse regulators. It can be interchanged with 3CPX800A7 electronic tube produced in the United States.

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