A broadband 500 kW CW klystron at S-band

This paper will describe the development of a 500 kilowatt CW S-band klystron amplifier, designed for installation, on the 210 foot steerable antenna at the JPL/NASA deep space instrumentation facility at Goldstone, California. This tube is an improved version of the 450 kilowatt unit developed in 1967. Its features include 1-1/2 percent instantaneous bandwidth, 58 dB nominal gain and 53 percent nominal efficiency.