The XTD-270DBS is a compact self contained antenna mountable high power amplifier (HPA) designed for low cost installation and long life. The outdoor design eliminates the need for an amplifier shelter as well as a long waveguide run between the amplifier and the antenna feed horn. RF filters, cooling, and monitoring & control (M&C) systems are all self contained within the HPA. These features provide high reliability, low maintenance costs, and low replacement costs.