The 3CX1500A7 is a ceramic-metal and rugged high-mu power triode, designed with oxide coated cathode.
The tube maximum plate dissipation is 1.5kW and maximum frequency operation is 250MHz.
The tube is designed for use as cathode driven Class AB2 or Class B amplifier in audio or RF applications including the VHF band or as a cathode driven plate modulated Class C RF power amplifier.