Scientific types may want to turn away. This is a very short, yet interesting, explanation of how does satellite TV work. Even though it has become very popular in the last few years, satellite TV has been around for a long time. The first satellite for TV was put into orbit in’62.

Back then people who wanted satellite for their televisions had to use a nine foot dish that they put in their back yards. They were really big, ugly, and gave an incredible variety of channels from other countries that made them totally worth the effort. Some people still have those dishes in their back yards. When somebody wants to get channels from a different country they call the neighbors to help them move the dish a tad. There were remotes included with the dishes but those were lost years ago.

The really great thing about these dishes, besides the fact that it was a great excuse not to mow half the back yard, was that you could get programs from other countries. For instance, someone in California could get programming from Canada. Or, when the satellites shifted you could get programs from other countries depending on which satellite you landed on.

So, as the popularity of satellite televisions grew they started shooting more satellites up that had transponders on them. They called these geostationary satellites because they are orbiting at the same speed as the earth so they aren’t really moving anymore than we are. This made reception easier to achieve and if you knew where a satellite was you could point the nine foot dish at the satellite and watch a different countries stuff. It was still pretty cool.

Well, nine foot dishes just have never really caught on as a yard ornament in cities and they wanted satellite television also. So, satellite providers came up with little’” dishes that could be put just about anywhere on a house with a clear southern exposure and started beaming programs from all of the satellites to the dishes. No more calling the neighbors to move the dish, just a little dish stuck on the side of a building that was easy to move and 500 or so channels to choose from.

In cities however, obstruction was a problem and that is how “spot beams” were born. The satellites beam a signal to the spot beam, that beams a signal to the dish, that beams a signal to the receiver. This solved the problem of getting a signal just about anywhere in a metropolitan area easily.

The satellite guys made other advancements too. They learned that by encoding the signals digitally they could cram more channels into the same bandwidth. So there are over 500 channels being shot across the same bandwidth twenty-four hours a day in both HDTV and standard formats.

So there you have it. The very unscientific answer to the question how does satellite TV work.

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