The whole content of the radio service that is both data and audio content is represented by only two carriers. Other four carriers carry duplicates of the same content to achieve redundancy through diversity of signals. Time delayed and error correction schemes are used for carrying data on each carrier. This is done to enhance availability.

Thus the total effective radio spectrum used for content is a little over four mega hertz.

You've caved. Initially the idea of paying $13/month for radio seemed silly, since you already had a perfectly fine set up, but over time the idea of having 130 channels of commercial-free listening charmed you. Since you'll need a few items to get started, you may be wondering what kind of Sirius Satellite radios to look for at your local electronics shop.

Subscription-based satellite radio service is at the forefront of the US music market. Long gone are the days when people when the only option was in choosing from just one or two measly stations that had poor reception and overbearing, irritating disk jockeys and commercials!

However, local stations generally don't fear this latest technology revolution, predicting their survival in much the same way basic television has survived, despite the emergence of cable in the 90s.

If you're browsing the internet in search of a satellite radio service for the US and Canada, then you need only check two websites: Sirius and XMRadio. These two giants are your only options and yet you'll notice striking similarities between the two websites' design, the product pricing and the programmer's stations.

Rumors have been flying around that Sirius and XM will form a ground-breaking merger this year, uniting all 14+ million customers under one banner.

There are many satellite radio accessories to enable you to enhance your Sirius radio capabilities. For instance, you may decide to listen to two different stations of this latest technology in your house at the same time.

Or you may want a remote control with the three-line LCD display telling you the song title, station and artist. Or perhaps you'd like better reception in the car when you're going through mountain terrain.

Portable satellite radio is the latest music trend, combining your MP3 collection with the ability to hear new music via Sirius or XM Radio. You'll find that many of the portable ones are unique, sleek and more functional than an iPod. Many people like the versatility of a portable satellite radio since they can use it in the home, office or car, with minimal installation requirements.

The answer to all your MP3 satellite radio woes is here, revolutionizing radio in much the same way as Tivo did for satellite television! With Time Trax, you can now download your favorite XM and Sirius radio shows in high-quality MP3 format directly to your computer.

If you want to burn the MP3 files onto CD-R's, post them on your website or even load them into your iTunes, it's up to you! There's no limit to what you can do with this neat little device.

Actually, the newest wave in radio technology does not use a wave at all. It uses a satellite signal that is beamed down from the sky. It seems we are getting closer all the time to living in the Star Trek age. It has not been many years ago that the only way to get a radio signal to your home or car was by a tower that emit electromagnetic waves for broadcasting.

Subscription-based satellite radio service is at the forefront of the US music market. Long gone are the days when people when the only option was in choosing from just one or two measly stations that had poor reception and overbearing, irritating disk jockeys and commercials!

However, local radio stations generally don't fear the satellite radio revolution, predicting their survival in much the same way basic television has survived, despite the emergence of cable in the 90s.

There are many brands of satellite radios that will work well with the XM Satellite Radio systems. The Pioneer Inno and Samsung Helix XM radio receivers have features that will give XM users Live XM broadcasts that are portable and give them the option to store their MP3's and play them when they want to. With more than 50 hours of storage, the Pioneer Inno is certainly capable of providing many hours of entertainment and access to sports and stock tickers.