Saturday 25 July 2009

The Advantages Of Satellite TV

By Ron Goodman

People using satellite TV have a different experience than those that are using cable or terrestrial services. With satellite TV, you receive a much bigger array of services and channels, along with some channels that can be gained through subscription only.

It was in the year 1962 that the first satellite television signal was successfully broadcast for North America over Europe. Syncom 2, a geosynchronous communication satellite, was introduced in 1963. Two years later the world witnessed the launch of Early Bird - the first commercial satellite to enter the synchronous orbit. In 1967 satellite signals were rebroadcast to ground-based downlink stations by a Soviet company called Orbita. The first North American company offering a similar solution was Canada with its Anik 1.

There are thee broadcast standards used to distribute analog TV via satellite: PAL, NTSC, and SECAM. The frequency modulated analog signal, which makes up the audio sub-carrier and video signal, is altered from FM to baseband. Digitized television signal is usually QPSK.

MPEG and DVB-S are the common standards used in digital tv. Because scrambling and accessing encryption is what is needed, methods such as PowerVu, Viaccess, Irdeto, Conax, BISS, Digicipher, VideoGuard, and Videocypher are used most often.

You have several different options if you are looking for satellite television, and the three main types are direct viewer reception, local TV affiliate reception, and headends reception distributed through terrestrial cables. The first type includes DBS (which stands for direct broadcast satellite) and TVRO (short for television receive only).

Satellite TV is often chosen over analog TV because of the advantages it offers, two of which include advanced clarity and resolution. Satellite TV uses Ku band signals plus the best digital equipment " a huge leap from the C-band analog cables (already outdated).

The coverage and reception of satellite TV, in comparison to analog, will be greater. If you do not have access to cable or if you live in far, rural areas, then this kind of TV is for you. Satellite TV likewise offers more options in terms of subscription " you can actually choose among many different retailer companies (never get stuck with the only cable provider in your area). Many people are looking for a variety of programming options in their television providers, and for them, this is definitely the best choice available.

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