Why do we have satellite television? What’s wrong with the terrestrial broadcasts that we have enjoyed for five decades or more? Well the real benefit is the fact that you get more channels. You get more channels because satellite broadcasts are able to use more bandwidth than conventional terrestrial systems and can thus fit more separate channels into the space allowed. Another competitor for your viewing time is cable television of course. Cable has some benefits in being more reliable perhaps however, it is also limited by the very fact that you must live somewhere where the cable companies are ready to connect you up.
The local terrain and the curvature of the earth limit terrestrial TV signals in the area that they can server. Both terrestrial and Satellite TV use essentially the same type of signals but by beaming the signal from above, one satellite is able to serve a wider area. This is why satellite television has become popular in isolated areas where it is not practical to serve people with a land based antenna and certainly not economic to provide cables to those areas.
You simply can’t ignore the logic.
Satellites that transmit TV are placed in orbit over 22, 000 miles above the Earth and they rotate around the planet once every 24 hours and under the same direction that the Earth is rotating in. Because the Earth rotates once every 24 hours and the satellite moves around the Earth at the same velocity along the same direction, the satellite always stays over the same question on the surface. The satellites are said to be in geostationary orbit. Because they’re high in the air a satellite beams signals over a large area of the planets surface. The satellites are also in communication with each other so that they are able to relay the same broadcast to all satellites in orbit over various parts of the world. This is how we’re able to get TV live from anywhere on the Earth and view it during the same time as everyone else on the planet receiving a signal from a satellite. When you think about it it is a pretty amazing feat of technology.
Television?? More Considerations
When satellite television was first introduced the dishes required to receive the signal were very expensive and people were able to set them up to receive programmes that weren’t really intended for everybody to see. Nowadays people tend to subscribe to a’ Direct Broadcast Satellite’ (DBS) provider such as DirecTV or Dish Network in the US and Sky in the UK. These providers are able to choose programs and broadcast them to people as set packages, for example the’ Family ‘, ‘Sports’ or’ Movie’ packages. Cost will depend on which one you decide to buy.
The leader in this sort of technology is Dish Network. They have made it easy for people to upgrade to the HD satellite television with the help of an antenna pointed at the Dish Network satellite and a receiver that transmits the information to a HD compatible television.