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Satellite TV – How Does It


In the early 90s satellite dishes were pretty expensive and took up a lot of

space. Nowadays, you don't have to go through all the trouble that comes

with putting up your own dish and wiring your satellite TV system.

These days, you see that all over the United States, people are using modern compact satellite dishes. Even in rural areas, where it's hard to reach a cable company, you'll find satellite dishes in almost every house. The major satellite TV companies have made huge profits by advertising movies, series, news and sport events and the TV fan-base has grown exponentially over the few last years. See reviews of satellite TV, and Dish. Technically, satellite television doesn't differ much from broadcast television. It's a wireless system that delivers TV programs directly to the viewer's house via radio signals (check out our article, Google How Radio Works for more information about radio broadcasting. Broadcast stations emit radio waves to the surrounding areas using a big powerful antenna. Viewer's antenna is way smaller, but they can pick up the radio signals emitted by the broadcast stations. The only problem with broadcast television is range. Radio signals used in broadcast television are emitted in a straight line. It can go through small objects like trees and other houses, but not large things like the Earth. Since the earth is round, it ultimately breaks the signal. Which means that it's impossible to emit signals from somewhere on land to somewhere very far because the earth is going to block the signal. The other negative side of broadcast television is that the signal can be distorted even in the viewing area if you are a little far from the broadcast antenna. You have to get closer to the broadcast antenna to receive a signal that is as clear as a cable signal. Both of these problems are solved with satellite TV. Signals are transmitted from satellites orbiting the earth. More people can get the signal because the satellites are high up in the sky. To receive and emit radio waves, we use devices called satellite dishes. With satellite television, more people are reached because satellites are higher in the sky than TV antennas. TV satellites are geosynchronous, meaning their relative position to earth stays the same. Satellites are launched into orbit at about 7000 mph, reaching 22,200 miles above earth. This speed and altitude allows satellites to orbit around Earth every 24 hours, which is the same period earth revolves around itself. This means that you only need to configure your satellite once, and from then on you don't need further adjustments to pick up a signal, at least when everything works fine (Google How Satellites Work for more information on satellite orbits.) In conclusion, satellite TV has revolutionized the TV sector by solving the problems with broadcasting to far areas and improving the sound and image quality. The only downside of satellite TV is the price, but it's worth it if you take into consideration the quality of the service. provided by satellite TV providers.
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