1. There are over 2,500 communication satellites approx. 36,000km above the earth’s surface in a geostationary orbit around the equator, known as the Clarke Belt (named after scientist and sci-fi author, Arthur C. Clarke)
2 . It takes approx. 0.6 seconds for data to travel from a satellite to your TV screen
3. Larger satellite dishes have a higher gain (they focus energy more accurately and efficiently) which makes them more reliable in bad weather, experiencing less signal ‘dropout’.
4. It is possible to align just one satellite dish to receive signal from multiple satellites at the same time.
5. Rain or snow can affect satellite signal as the high frequency radio waves (between 1-3000MHz) are easily absorbed by water. The same is true for mobile phones. Terrestrial TV however, is more resistant to bad weather as it works on much lower frequencies (up to 700MHz) which are less easily absorbed.