A 20-kilovolt, 18-ampere ruggedized pulse tetrode

A new pulse tetrode (the X656) has been developed which is intended for applications involving severe shock or vibration. Designed to operate satisfactorily under conditions of 200-g shock or 10-g vibration, the electrical characteristics of this new tube are similar to those of the widely used 4PR60A. Typically, 18 amperes of pulse anode current is available when operating at 20 kv.