Short Introduction
Uncategorized July 17th. 2009, 12:01amShort Introduction
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A Short Introduction To Historypin
A Short Introduction Into How Satellite Tv Works
Did you ever ask yourself what are the things that make satellite tv function and which are its most important purposes? This short article will hopefully answer some of the basic questions in this matter.
First of all, let us establish the most important aspects: satellite tv at its root is the broadcasting of both video and audio signals, sent by various satellites to the dishes which are found on the Earth’s surface. These satellites are on a geostationary orbit.
Obviously, satellites can almost be considered a contemporary wonder and they are the things which make so many things possible, and not only in satellite tv. They have deeply revolutionized communications. They orbit the Earth in a place called Clarke Belt, which is a region in space found 22,300 miles over the Equator line.
But now let’s talk a little bit about the transponders. They are objects that transmit the signal to the Earth, and each and every satellite has a number of transponders. The signals that are transmitted can be different in their nature. Usually, they are broadcast on some important bands, the C Band, the Ku Band and the Ka Band. The frequency of the signal is the most important element which is defined by these various types of bands.
Bear in mind, these signals have to travel more than 20,000 miles, 22,300 more precisely. They are then picked up on the ground's surface by the satellite dishes. A satellite dish’s main task is to pick up these signals and reflect them further away. Even if a dish can be as small as 18 inches across, it will still successfully deliver the signal to the feedhorn.
And now, in this journey, the satellite signal gets to the feedhorn. But what is a feedhorn? A feedhorn is apart of the satellite dish. The feedhorn’s goal is to receive the signal and transmit it over once more to the LNB. Then, the LNB will amplify the signal in order to transform it to a frequency which will be more appropriate for a transmission which is made over cable.
And now we talk about another enigmatic term, the LNB. LNB is an acronym of Low Noise Block, and its task is the one we were talking about earlier. The cable is also called IFL, an abbreviation of Intra Facility Link. The IFL is the object with the help of which the LNB carries the signal to the receiver. Then, the last step of this process is done by the receiver, which carries the signal to your television set.
And here is where the signal’s journey comes to an end. It is very fascinating when you think about all the technology which is involved in this process and all the steps and transformations the signal must undergo. So now you finally know how satellite tv works in its basic form.
About the Author
Michael Stevens is a satellite tv passionate. Learn more about satellite tv at http://www.satellitetv-center.com/
