How Does Satellite Television Work?
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Broadcast centers recieve signals
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Satellite television has completely revolutionized television ever since its inception in the early 1990s. At that time, though, homes had to have monstrous satellite dishes that would have to move to pick up different channels from various satellites. Now, smaller dishes can be installed that are receiving signals from satellites in geosynchronous orbit around the Earth, which means the dishes will not have move to receive channels. Satellite television has many components that make it work, but the way they fit together is really very simple. It all begins with the satellite provider. They make deals with television stations that enable them to offer the channels to their customers. Various stations then send their programming signals to the broadcast center owned by the satellite TV company. Here, all the signals from various channels and sources are compiled into programming packages, which you can purchase from the provider.
Signals are sent into space
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These packaged signals are then shot into space towards satellites owned by the satellite TV provider. These are moving at the same rotational speed as the Earth, so as long as they are working properly they can always send and receive signals to and from the same sources. The satellites pick up the signals from the broadcast center and send them out to various homes in their area that subscribe to the package. A powerful internal microprocessor copies the signals and coordinates where the beams will be sent. Satellite companies typically have more than one satellite in order to have a wider range for customers.
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Signals recieved at home
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When the home satellite systems receive the broadcast waves from the satellites in the air, they send them to a receiver that is located in the home. Typically, there is one receiver for each television set that is going to be hooked up with satellite television. Inside the receiver, the signals get processed and converted into a code that can be read by the television set. A cord runs from the receiver to the television set and transfers this information to it. The television then takes this information to display the picture onto the screen. When satellite television first came out, a home satellite had to take signals from multiple satellites in space and that means it would take time to change channels. Modern satellite television, however, gets all the channels from a single source, so changing the channel is instantaneous.
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