National/Greenstone 4CX20000B

National/Greenstone 4CX20000B
4CX20000B is intended for use as a Class C RF power amplifier in the AM broadcast service, for use as an audio amplifier or modulator, or as a pulse modulator. The anode is rated for 20 kW dissipation and incorporates a highly efficient cooler of new design, which significantly reduces air pressure and flow requirements and produces low acoustic noise levels.