Twenty-eight new waveguide electromechanical relay switches offer full waveguide performance covering C, X, Ku, K and Ka frequency bands from 5.85 to 40 GHz. They are ideal for applications that include electronic warfare, electronic countermeasures, microwave radio, VSAT, SATCOM, radar, research and development, space systems, and test instrumentation. They are configured for SPDT operation with latching self-cut-off actuators, TTL logic and position indicators with manual override. A shorting plate can be removed for optional DPDT operation. All switches incorporate a patented motor drive with arc suppression and include an environmentally sealed, quick-connect DC control connector and mate. The compact package design features integrated waveguide ports with grooved flanges and O-rings included for pressurized operation (up to 30 PSIG). These waveguide electromechanical relay switches deliver performance down to 0.01 dB typical insertion loss and up to 105 dB typical isolation. Models exhibit switching speed levels that range from 54 to 76 msec typical, and are available with either +12 or +28 Vdc nominal voltages.