"Comtech EF Data’s High-Power Outdoor (HPOD) Solid-State Power Amplifier (SSPA) delivers its rated power, guaranteed, at the 1 dB compression point, to the transmit waveguide flange. It provides a cost effective, more reliable replacement for Traveling Wave Tube Amplifiers (TWTA) in satellite communications. ... Each HPOD consists of a CEFD SSPA module with a field replaceable power supply, a field replaceable fan assembly, and the Monitor/Control Processor (MCP). The amplifier features a Comtech EF Data low loss combining technique and MCP based temperature versus gain compensation." [comtechefdata.com/files/manuals/mn-amplifiers-pdf/mn-hpod.pdf]