A Science Service LRWT (Long-Range Wave Transmitter) is an antenna feed device developed by Science Service Incorporated in the years before the Last War. It was used extensively by the Scetanian armed forces to control military satellites, due to its high-power transmitter capabilities. Of the four built, only one remains, in the Science Service headquarters in Tresdo. Compared to other antenna feeds, it is very large, being 3 ft x 3 ft x 7 ft. This allows it to transmit to orbiting objects, such as the OCL B.T.