The 3CX2500F3/8251 high power triode is widely employed in AM, FM, and TV service. It's coaxial filament and grid terminals insure low-inductance connection to these electrodes and allow operation at maximum ratings through 110 MHz. The use of an external forced-air-cooled anode results in a compact structure with high power-handling capability. The 3CX2500F3/8251 has a flexible filament and grid leads on the base which can simplify low frequency installations.