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Cable TV and Satellite TV - which is better?
Cable TV and satellite TV - which is the better system? There's a battle going on between Cable TV and Satellite TV. Today, consumers have a choice between conventional cable TV, digital cable TV, and all-digital satellite TV. Do you want to know...
Dish Network and Direct TV try to join forces
In October of 2001, Dish Network and Direct TV made a very serious attempt at joining forces with one another which would have given these two Satellite TV providers a huge monopoly in the satellite TV industry, however, the US Department of Justice...
Dish Network VS Cable Television
Have you wanted to upgrade your regular cable to digital cable and then someone confused you by saying you should ditch the cable all together and go with a satellite system? Then this article was meant for you! We are going to compare some of the...
Satellite TV can be an eye opening experience!
There are many appealing aspects to satellite television. From
the many freebies that the companies try to entice you with, to
the appealing price of the monthly service, to the value of the
basic service, to the quality of the picture and...
VoIP - Saving on the Bundle
The use of VoIP services is really in it's infancy at the present time, and like an infant will grow as time moves forward.
While the business community has been on the forefront of the use of VoIP and broadband phone services, it's use is...
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The Science Behind Satellites
The Science Behind Satellites
By Kate Ivy and Gary Davis
Dish-Network-Satellite-TV.ws
Webmasters: You may reprint this article in its entirety, providing you leave the Byline and About the Author sections intact, including the links to Dish Network Satellite TV.
The Science Behind Your Satellite Dish
Ever wonder how your satellite system works? There’s actually quite a bit of science going on behind the scenes, with several components working together to bring you that digital-quality signal. Here’s a quick look at the pieces that form your satellite puzzle.
Your channel selection begins with the programming sources themselves. Companies like Showtime, HBO and Starz! all create their respective programming. Channel providers then purchase rights to this programming so that they can broadcast the shows via satellite. Once a provider has their programming in place, they turn their attention to the broadcast center to compress and convert the programming for satellite broadcast.
Your programming original arrives as a digital stream of video, which is then compressed and converted through an encoder, typically using the MPEG 2 format. This format reduces the overall size of the video, making it possible for a satellite to broadcast hundreds of channels at the same time.
Once encoded, the video is then encrypted so that the broadcast can only be viewed by paying subscribers. This encryption “scrambles” the signal so that those without the proper receiver pick up distorted and unintelligible video. After the video has been encrypted, it is sent to the provider’s satellite, strategically positioned in the sky.
The satellite itself uses a dish similar to
your own satellite dish, to receive the video and send it back down to Earth to the provider’s subscribers. The satellite contains numerous transponders, components that allow the satellite to pick up the broadcast signal, amplify it and resend at a specific frequency. In addition to the transponders, satellites typically have several other onboard components, including a power source such as solar panels or rechargeable batteries and a computer system to monitor the satellite’s various functions and conditions.
When the satellite sends the signal back down to Earth, it is picked up by your dish, a small round antennae that receives the satellite’s broadcast and send the video on to your satellite TV receiver.
The receiver is that little black box that sits inside your home and allows you to choose which channel you want to watch. The receiver actually performs several crucial functions in the satellite viewing process, including the decryption of the signal itself. If you’ll remember, the satellite signal was scrambled by the provider to protect it from un-paying consumers. Your receiver “de-scrambles” that signal and converts the signal into a format that your television can handle, such as analog or more recently, HDTV.
Together these amazing components create a vividly clear digital picture for over 200 satellite channels. How’s that for programming genius?
About the Author
About the Authors: Gary Davis is owner of Dish Network Satellite TV and has written numerous articles on the satellite television industry. Kate Ivy has written for a variety of publications and websites and is the owner of
Ivygirl Media & Design.
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