Satellite technology has made a benchmark in the field of broadcast communications over the last decade, introducing the world to an entirely new era of television entertainment. Many have wondered how this type of innovation works and how can it affect every human life.
A satellite dish is normally an antenna designed to receive signals from a specific broadcast source. The dish has a bowl-shaped (parabolic) surface to capture the signal and transmit it to the central feed horn as a narrow beam of energy. To provide everyone with a quality satellite programming, the satellite dish must receive a signal from a correct source. There are a lot of man-made satellites that orbit around the earth at a distance of about 20,000 miles into the sky. These satellites receive certain digital signals from your local programming provider, encrypt them and then transmit them back to the subscribers.
Azimuth, Altitude and Skew
Each satellite is situated into the sky at specifically calculated coordinates. These coordinates namely the azimuth, the altitude and the skew, tell your satellite dish exactly where to look. The azimuth refers to the East/West location while the altitude or elevation states how far North of the horizon (ground level) you need to go. The skew is a computation to compensate for the natural curvature of the earth itself. With the help of these three coordinates, you can precisely point your satellite dish to receive transmission from any appropriate satellite.
There are some systems that can receive signals from multiple sources, having multiple horns to capture multiple signals. To avoid any problem, each signal should be accurately reflected to separate feed horns so that there could be no interruption. When your satellite dish captures the signal, it sends it via the feed horn where it is transmitted to the satellite receiver. To guarantee that you receive a strong, uninterrupted satellite transmission, the satellite dish must be mounted in an open area without any kind of obstructions like trees, walls and buildings.