Advantage And Disadvantage Of Satellite Tv

1137 Words5 Pages
A satellite TV system is a very technical, highly complex system of equipment including a satellite uplink station, the satellite out in space orbiting in a geosyncronous orbit 22,300 miles above the earth's equator, the small mini-dish receiving unit located on a house or business and last the receiver (black box) that connects to your television and allows you to view the satellite programming. Commercial satellite TV programming has been around since the 1990's and today it is making huge gains on the cable TV market as more and more Americans are taking advantage of better picture and audio quality, lower monthly prices than cable and free equipment and installation that both major U.S. satellite providers, DISH Network and
DIRECTV provide.
…show more content…
A radio signal can only travel in a straight line however. Enter the satellite. By placing an orbiting satellite at 37,000 km (22,300 miles) above the earth and having it match the earth's rotational speed (7,000 miles per hour) the satellite stays over the same spot above the earth.
This is referred to as being in geosyncronous orbit. These orbits are sometimes also referred to as Clarke orbits in honor of Arthur C. Clarke who first came up with the idea in an article he wrote back in 1945 entitled "Extraterrestrial Relays" published in Wireless World Magazine. The orbiting satellite then retransmits the radio broadcast signal back down to earth to the receiving satellite dish (mini-dish) located on your home or business. The signal then travels through coaxial cables from the dish into the receiver that is connected to your TV, where the signal is then descrambled into viewable programming for your family to enjoy.

Uplink Station

Satellite TV programming that you watch at home begins with a transmitting satellite dish or antenna located at what is known as an uplink station. The satellite

More about Advantage And Disadvantage Of Satellite Tv

Open Document