Electron Tubes and Devices in the 4.3-mm Frequency Range

This paper discusses the development programs for a klystron, a magnetron, and various duplexing and switching devices for the 70-kMc region of the radio frequency spectrum during the last decade. An evaluation of the electrical performance and of the behavior under environmental conditions for these devices is also discussed. It is concluded that the quality and performance of the devices make system application feasible. Sections I and II describe the klystron and magnetron program. Section III describes the switching devices program.