Tips On Just how the satellite radio works
by Karri Owens
Satellite radio is probably the biggest improvements in broadcasting since the introduction of FM. Satellite radio signal could be broadcasted for more than 35,000 kilometers (22,000 miles) with complete clarity and high quality sound. You will never get static interferences while listening to over 100 radio channels. The theory behind satellite radio has appeared in 1992, in the event the United States Federal Communications Commission granted a spectrum with the S band (the 2.3 GHz frequency) for Digital Audio Radio Service. The license to broadcast because band was allocated to Sirius Satellite Radio and XM Satellite Radio in 1997. Presently there are three companies that provide satellite radio on the globe: Sirius and XM in Northern America and WorldSpace in Asia, Europe and Africa.
These companies offer different broadcasting systems, considering that the radio signal of each is proprietary. Because of this you will have to buy different hardware based on your subscription to one of such companies. However, there are three components present with all satellite radio services: the satellites, the soil repeaters and the radio receivers. Different satellite radio companies broadcast the radio signal in different ways. For instance, XM satellite radio uses geostationary satellites that have orbits that are synchronized with the movement of Earth. These satellites are placed above the equator. In order to allow subscribers to obtain crystal-clear signal despite obstacles for example buildings, hills or bridges, XM satellite radio service has installed a network of repeaters antennas that obtain the radio signal from the satellites and retransmit it on the subscriber's receiver Sirius, on the other hand, uses satellites that have unique elliptical orbits around Earth. Such orbits allow satellites to get higher in the sky than geostationary satellites and this prevents loss in signal. This is the reason why Sirius has fewer terrestrial repeaters than XM.
Satellite radio services have digital broadcast centers in which a huge amount of music in digital format as well as CD format is stored. Radio programmers possess the task of selecting which song needs to be played at which time. There are also plenty of studios managed by digital radio companies where artists perform live. All songs and material are transmitted on the satellites in digital format in order that the signal contains very high quality sound. The signal is encoded through the satellite and then retransmitted to the repeaters antennas, which in turn transmit it to the radio receiver which decodes it and plays the sound.
The whole process is very quick and reliable. Satellite radio would not be possible without digital compression. Digital compression is a technique that uses sophisticated algorithms to compress as much material as possible on the available bandwidth. After you make a subscription to a satellite radio provider you will want the appropriate <a href="http://goarticles.com/article/A-Look-At-Jazz-Music-Schools/6054368/">radio</a> equipment. Traditional radios cannot decode the signal received from satellites which means you will need special equipment.
The buzz of satellite radio is growing due to many technological advancements that enabled manufacturers to offer the receivers at very attractive prices. The belief that satellite radio is commercial free for several of its channels is also a major selling point.
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New Unique Article!
Title: Tips On Just how the satellite radio works
Author: Karri Owens
Email: karri_o_2000@yahoo.com
Keywords: radio,music,entertainment,arts
Word Count: 524
Category: Movies
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