Here is some facts about satellite Tv.
Satellite television or satellite Television is television delivered by way of orbiting communications satellites situated 37,000 km above the earth?s surface.
The very first satellite Tv signal was relayed from Europe to the Telstar satellite more than North America in 1962. The very first domestic North American satellite to carry tv was Canada?s Anik 1, which was launched in 1973.
Satellite Tv, like other communications relayed by satellite, starts with a transmitting satellite antenna situated at an uplink facility. Uplink satellite dishes are directed toward the satellite that its signals will be transmitted to, and are extremely significant, as significantly as 9 to 12 meters (30 to 40 feet) in diameter. The larger the satellite dish, the more accurate positioning and improved signal reception at the satellite. The satellite Tv signals is transmitted to devices situated on-board the satellite referred to as transponders, which retransmit the satellite signal back towards the Earth at a distinct frequency.
The satellite signal, really weak following traveling by means of space, is collected by a parabolic receiving dish, which reflects the weak signal to the dish?s focal point and is received, down-converted to a lower frequency band and amplified by a device known as a low-noise block down converter, or LNB.
A new form of satellite antenna, which does not use a directed parabolic dish and can be utilized on a mobile platform such as a vehicle, was recently announced by the University of Waterloo. On generally known as vehicle satellite program.
The satellite Television signal, now amplified, travels to a satellite Tv receiver box via coaxial cable (RG-6 or RG-10 can not be standard RG-59) and is converted by a local oscillator to the L-band range of frequencies (roughly). Special on-board electronics in the receiver box aid tune the signal and then convert it to a frequency that a regular television can use.
As you known, satellite Tv enterprise in United States are primarily dominated by two corporations, Dish Network and DirecTV. If you would like to have a satellite Television in your home, your options are mostly limited to the cost-free satellite Television packages that provided by either 1 Dish Network or DirecTV.
Here?s a rapid view on United States satellite Tv business: Hughes?s DirecTV, the initially high-powered DBS method, went online in 1994 and was the first North American DBS service. In 1996, Echostar?s Dish Network went on the net in the United States and has gone on to comparable achievement.
Teddy Low
Webmaster
http://www.satellitetvissue.com
Please read our another article:Top 10 Satellite Tv Software Reviews.
Source: http://www.satellitetvsoftwares.com/2012/03/06/satellite-tv/
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