The OceanTRx 4 Mil X from Orbit Communication Systems is a Space-Qualified Satellite Terminal with an X-band transmitter frequency range of 7.9-8.4 GHz and a receiver frequency range of 7.25-7.75 GHz. This VSAT system has a RHCP/LHCP electrically switchable polarization control and a system G/T of 14 dB/Deg K. It uses a dual offset Gregorian antenna that measures 1.15 m and a system EIRP value of 48 dBW. The terminal has a continuous azimuth range of -30° to +120° and a cross elevation range of -75° to +75°. It features simultaneous operation or automatic switching of dual and multiple bands and incorporates a patented algorithm that enables seamless MEO/LEO satellite handover. The terminal is designed and tested for the strictest MIL-STD-810G environmental conditions and MIL-STD-461G EMI/EMC conditions. It weighs less than 250 Kg and measures 1.55 × 1.69 m (radome size). The terminal is has an optional fast manual band swapping with multiple BUCs per system and provides reliable, high-capacity, long-range multiband communication to navy vessels under extreme conditions.