A satellite communication system is a type of repeater that receives the RF signal on the uplink frequency and retransmits it to the earth station on the downlink frequency.Through this communication can be established from the same place to another place.The satellite is orbiting around the Earth in an orbit 36000 km above the Earth's surface.
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The signal path from the transmitter to the satellite is called uplink.The signal path from the satellite to the ground-based subscriber device is called downloading.It has an uplink frequency band of 7.75 to 7.075 GHZ and the downlink frequency bank is 3.4 to 4.8 GHZ.A satellite can use about 10000 volt circuits.These satellites are controlled from the ground.
