What is a satellite TV?

Here is some free satellite TV knowledge for always-curious satellite TV users!

Satellite television or satellite TV is television delivered by way of orbiting communications satellites located 37,000 km (22,300 miles) above the earth's surface. The first satellite TV signal was relayed from Europe to the Telstar satellite over North America in 1962. The first domestic North American satellite to carry television was Canada's Anik 1, which was launched in 1973.

Satellite TV, like other communications relayed by satellite, starts with a transmitting satellite antenna located at an uplink facility. Uplink satellite dishes are directed toward the satellite that its signals will be transmitted to, and are very large, as much as 9 to 12 meters (30 to 40 feet) in diameter.

The larger the satellite dish, the more accurate positioning and improved signal reception at the satellite. The satellite TV signals is transmitted to devices located on-board the satellite called transponders, which retransmit the satellite signal back towards the Earth at a different frequency.

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