The PTCM1027 from Communications & Power Industries (CPI) is a TWT Amplifier that operates from 26.5 to 40 GHz. It delivers an output power of 145 W and can also be operated in pulsed mode using an internal grid modulator. The amplifier features built in self-test, advanced fault diagnostics, modular, plug and play field replaceable PCBs and Ethernet remote control and monitoring. It is based on CPI TMD’s ultra-reliable military power supplies and also employs a state-of-the-art cooling system, incorporating heat pipes. This amplifier is available in a standard (customisable) 6U chassis and is suitable for use in electromagnetic compatibility, radiated immunity, communications, electronic warfare radar and RF component testing applications.