Dark noise generation by super-power tubes

This paper describes the noise generation properties of multi-megawatt super-power tubes of the shield-grid type. The importance of the subject lies in the use of these tubes in radar transmitters where “dark noise” generated in the interpulse interval may seriously degrade system performance. In the past this has required plate pulsing of the amplifier but this paper demonstrates that grid-pulsing alone can be made to suffice.