English: The Eimac 3CX1500A7, a popular high power transmitting triodevacuum tube used in radio and television transmitters. Typical output 1500 W power at 220 MHz giving 14 dB gain with 3000V on the anode. The cylindrical sheet metal structure is a heat sink attached to the anode through which air is forced by a fan during operation. From data sheet: [1]
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