The Amazing Technology Of Consumer Satellite TV
There is a long, very scientific answer to the question, how does satellite TV work. There is also a shorter version that is way more interesting. We’re going to go with the shorter version and apologize in advance to the scientific types who will cringe when they read this. As far as most people thinking that dishes are new, well they are not. The first satellite for TV was shot into space 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.
Besides that a person who had one of these dishes was not required to mow about half of the lawn, you had unlimited television channels. Most of the channels came from other countries. This was because no one who owned a dish actually knew where to point it to get specific channels. So, a person in one region could get channels from a country thousands of miles away.
Once the satellites became more popular, providers started shooting satellites with transponders up regularly. These geostationary satellites orbit at the same speed as the earth so they don’t seem to be moving. This made reception even better and it was lots easier to find channels and countries because the satellites were identified. As people became more knowledgeable about where satellites were located they started creating their own programming guides. Those have now been replaced with the onscreen guides provided by the satellites.
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.
Problem was that most city dwellers don’t have an unobstructed view of anything. So, the next advancement was found in spot beams. Spot beams provide the answer to many problems. The satellite shoots a signal to the spot beam. The spot beam shoots a signal to the dish. The dish shoots the signal to the receiver on the television.
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.
If you’d like to learn more about how does satellite TV work there are many websites that have all of the scientific information about each part of the system. However, sometimes a short version followed by a satellite broadcast movie is better.
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