The PTXM9754 is a compact 100 W CW modular microwave power module with an integrated “Super Mini” TWT, a solid state preamplifier, and a high-density switch mode power supply to produce a single drop-in microwave amplifier block. Integration of the TWT and power supply simplifies design by eliminating TWT interconnections and their associated safety and reliability hazards. Integration further reduces the overall system size, simplifying the installation task. No user adjustments are required, simplifying replacement and reducing replacement times in the field. The MPM can be configured to incorporate a variety of TWT models, allowing the user to specify frequency and peak power parameters. The MPM includes a high-speed focus electrode modulator to permit operation at high PRFs.