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How Does Satellite TV Work?Satellite TV works by re-transmitting channel signals from the artificial satellites back to the Earth. Your satellite dish (or antenna) captures these signals, while a satellite receiver decodes and processes the signal before sending it to your television set. Understanding Signals, The Dish And Satellite Receivers Satellite signals are just like radio waves that transmit various analog or digital programming of channels. These waves are then reflected to the satellite dish to capture concentrated signals, sending them off to your receiver via your satellite cable network. The main job of your satellite receiver is to convert these signals (of hundreds of different frequencies) into viewable satellite TV channels. The satellite dish comes in two forms - oval and parabolic. While you may choose a dish based on its appearance, be aware that each type of dish receives different amounts of signals. Oval dishes can unite signals to multiple areas in the sky, which allows them to receive satellite TV channels from numerous satellites. While a parabolic dish can only collect signals from one source in the sky, restricting it to receiving channels from only one satellite at a time. Satellite receivers are similar to cable boxes, with the exception that they have different functionality. A satellite receiver, as its name suggests, receives signals from the satellite dish and transforms them into a readable or viewable signal that allows your television to display all of the various channels. The standard format of satellite signals are MPEG2, which allow base stations to transfer more channels to various satellites. Because your satellite TV cannot read MPEG2, your receiver will do the job for you by decompressing and decoding the MPEG2 format into any standard television format. Once these signals are decoded, you will be able to watch various TV shows on different channels. However, you can receive two types of channels from your satellite TV - scrambled and unscrambled channels. While scrambled channels are those that need subscription (from Dish Network or Direct TV), unscrambled channels are viewable without any type of additional charge. Most providers of satellite networks provide both the equipment and installation. Although you will be paying monthly for their services, you will only receive a limited number of channels, those that are included in your subscription plan. If you want to receive more channels for your satellite TV, you could buy your own equipment and do the installation yourself. |
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