Typically they move in geosynchronous orbits about 22,300 mi (35,900 km) above the earth and operate at frequencies near 4 gigahertz for downlinking and 6 GHz for uplinking.
典型的通讯卫星位于地球同步轨道，约在地球上方35，900公里处，操作频率向地传输4吉赫，向上传输为6吉赫。
Typically they move in geosynchronous orbits about 22,300 mi (35,900 km) above the earth and operate at frequencies near 4 gigahertz for downlinking and 6 GHz for uplinking.
典型的通讯卫星位于地球同步轨道，约在地球上方35，900公里处，操作频率向地传输4吉赫，向上传输为6吉赫。
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