MATRIX

Archive for February, 2010

Satellite radio is one of the biggest improvements in broadcasting since the introduction of FM. Satellite radio signal can 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 idea behind satellite radio has appeared in 1992, when the United States Federal Communications Commission granted a spectrum of the S band (the 2.3 GHz frequency) for Digital Audio Radio Service. The license to broadcast in that band was allocated to Sirius Satellite Radio and XM Satellite Radio in 1997. Now there are three companies that provide satellite radio in the world: Sirius and XM in Northern America and WorldSpace in Asia, Europe and Africa.

Each of these companies offer different broadcasting systems, since the radio signal of each is proprietary. This means that you will have to buy different hardware depending on your subscription to one of these companies. However, there are three components common to all satellite radio services: the satellites, the ground repeaters and the radio receivers. Different satellite radio companies broadcast the radio signal in different ways. For instance, XM satellite radio uses geostationary satellites which have orbits that are synchronized with the movement of Earth. These satellites are located above the equator. In order to allow subscribers to receive crystal-clear signal despite obstacles such as buildings, hills or bridges, XM satellite radio service has installed a network of repeaters antennas that receive the radio signal from the satellites and retransmit it to the subscriber’s receiver Sirius, on the other hand, uses satellites that have unique elliptical orbits around Earth. These kinds of orbits allow satellites to get higher in the sky than geostationary satellites and this prevents loss of signal. This is the reason why Sirius has fewer terrestrial repeaters than XM.

One of the great advantages of satellite radio is the fact that the programs are not interrupted by commercials. This is because the provider’s income comes from listeners and not from advertisers. Satellite radio services offer around 70 programs of commercial fee music channels each and you have a great variety of choices, from mainstream rock, hip-hop and dance music to folk music, opera, blues and many more.

Another great thing about satellite radio is the absence of static. You can be driving from the West Coast to the East Coast in the United States of America and you will not get any static at all on the way. The satellite radio signal is digital, which means that you will get crystal-clear sound wherever you go.

Satellite radio tuners receive, along with the actual radio programs, an influx of metadata that consists of information regarding song title, artist, radio program and radio channel. This means that your satellite radio receiver will display all the necessary information about what you are listening to. For instance, if you hear a great song and you want to know which artist sings it, you just look at the receiver‘s display.

All satellite radio programs are uncensored. This is one of the reasons why artists like Howard Stern chose to move their shows on satellite radio. You can also listen to your favorite hip-hop songs without the interruption of those annoying ‘beep’ sounds.

Satellite radio programs also offer information about local traffic and weather conditions. The information is very detailed especially for those who live in big cities. If there is a major national calamity and other terrestrial radio stations will not work, you can always count on getting accurate information from satellite radio program. You can also listen to satellite radio online on your computer.

The introduction of satellite radio has been one of the biggest innovations in recent FM broadcasting history. This radio signal can be heard at a distances of thirty five thousand kilometers and beyond. That is more that twenty two miles with a clear reception, no static and more than one hundred stations to listen to. The inception of this concept was 1992 when the Federal Communications Commissions gave up the S band on the radio wave spectrum (2.3 GHz) to Digital Audio Radio Service. The companies that were initially given a license to broadcast on this spectrum were XM Satellite Radio and Sirius Satellite Radio. Currently, there are three satellite radio services broadcasting around the world: XM and Sirius in North America and WorldSpace in Europe, Asia and Africa.

The three satellite radio companies each have a different system for broadcasting their signals. This means that a customer would end up buying specific equipment depending on what company they subscribe to. There are three parts to a satellite radio system: the ground repeaters, the satellites and the radio receivers. The XM satellite radio has satellites that are geographically located above the equator at all times. To combat the issue of obstacles such as hills, bridges and buildings, the XM radio service has a network of repeaters. These are antennas that get the signal from the satellites and transmit it to the subscriber’s radio. The Sirrus radio service is set up a little differently. The satellites are elliptical in structure and they orbit the Earth. Because these satellites are on a higher level, the signal is usually clear and there is no need to have quite as many repeaters.

The satellite radio programmers are able to choose what music or program to fill air time. Many use CD’s or have musicians come in to perform live. This sound is transmitted via a digital format. The signal is encoded by the satellite and then sent to the repeater antennae. The repeater moves it along to the subscriber’s radio which decodes the signal and plays the sound. Satellite radio also utilizes digital compression which is a method of reducing a set amount of information into a bandwidth using complex algorithms. If you are a subscriber, you will have to purchase the correct equipment to get the signal.

The amount of people who subscribe to satellite radio has grown due to the improvements made to the technology. The appeal of the radio station has always been the fact that the radio doesn’t depend on advertising to pay the bills, therefore the programs available are commercial free.