Articles About Satellite And Dish Networks

Satalite TV Service

For many people who have been used to traditional TV broadcasts or cable service, the first time they watch programs via satalite TV service may come as a shock. The fine clarity of images and quality of sound possible on satalite TV service are so much better. The reason is that all broadcasts on a satalite TV service are done on digital technology.

When you apply for a satalite TV service connection, the satalite TV service will send a technician to install the dish antenna system. The satalite TV service operator usually has a satellite up in space, located at a fixed point about 35,700 kilometers above the Earth?s equator. The compressed, digital signals from the satellite are beamed downwards onto your parabolic dish antenna, which is really a reflector and functions as a passive amplifier when it gathers the signals and concentrates them onto its focal point.

The dish bounces the signal received from the satellite to the LNBF, which is located at the focal point. The LNBF is that cylindrical assembly that you can see mounted in front of the dish. LNBF is the shortcut for Low Noise amplifier Block downconverter Feedhorn, or simply LNB. The LNB is the most crucial part of the satalite TV service system, aside from the receiver. A quality LNB can refine the quality of audio/video signals that feed into your receiver.

The feed horn at the head of the LNB funnels the signal reflected from the dish into the body of the LNB. The channels in the satalite TV service have a circular polarity. This means that when you change the channel on your receiver to an odd-numbered channel, the polarity goes in a counter-clockwise direction, and even-numbered channels go clockwise. The receiver in your house, which is a little box near your television set, will automatically switch the polarity when you switch the channels.

The signal representing the particular channel you specified gets amplified in the LNB. It then converts down the signal from the original 12 GHz that comes from the satalite TV service to a lower range below 2,000 MHz. Since the signal has been down-converted, it can now move through the coaxial cable that runs from your dish antenna to the satalite TV service receiver and on to your television set.

Sometimes, to make sure that you have an even clearer reception, your satalite TV service provider may recommend the use of a 24-inch dish. The bigger dish will help to increase the gain. Many satalite TV service subscribers also decide to use two dish antennas: one antenna is dedicated to regular programming while the other antenna is for HDTV broadcasts or other special channels that may be offered by the satalite TV service.

Free satellite TV dishes are usually part of the receiver package you get from the satalite TV service provider.

frank j vanderlugt owns and operates http://www.satellite-tv-service-now.com Satellite Tv Service

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