Satellite radio has certainly taken off. It is very popular for two or three main reasons such as quality, content and availability. In the context of satellite radio, quality refers to the quality of sound that is capable of being reproduced by the equipment because of the signal; content refers to the types of programmes being broadcast by the various radio channels or stations and availability refers to the footprint or coverage of the satellite, that is how much area of land receives the signal from the satellite.
All these comparisons are made with terrestrial radio broadcasts naturally. For example, we all know that standard AM or FM stations differ hugely in quality, the content can be heavily interspersed with advertising, jingles and mindless chatter and coverage is usually only on a very localized basis.
The two big players in the American satellite radio market are of course Sirius and XM and each one is attempting to out do the other in these three fields
Typically, satellite radio produces a quality of sound which is equivalent to CD quality. This is extremely high, especially if you use decent quality equipment to replay the signal received. If you merely replay satellite radio through tinny, ancient, blown speakers, then you will scarcely benefit from this boost in quality at all.
Quality, content and coverage have all played a role in increasing the popularity of satellite radio, but it is probably content which has played the greatest part.
You may be asking yourself why anyone would want to shell out for subscription radio, when there is so much free radio about. It is a valid question, but in fact, similarities can be made with cable TV and broadcast television. Why do people pay for that? Is it the sound quality? Or the content? Or what? A lot of cable TV is drivel too. Sports coverage, perhaps.
At least the preponderance of satellite radio is free of advertising. That has to be worth a few dollars a month and it is in fact a big selling point. Many people refer to the lack of advertising as one of their foremost reasons for moving to satellite radio.
It is likely that all big league sports games will move to subscription only over the next few years. This will inevitably be carried out with the use of satellite radio. American football, soccer, baseball, basketball will all either get their own nationwide channels or be bundled with other channels
People are fed up with the amount of advertising on AM and FM radio, but at the end of the day, the main reason whether to get satellite radio or not for most people rests on content not even so much on the quality of the sound. If sport is taken off terrestrial radio and only available on satellite radio, then people, especially men, will switch to satellite radio, which is precisely what happened with cable and satellite television.
Owen Jones, the author of this article, writes on a variety of subjects, but is currently involved with Bose alarm clocks. If you would like to kcurrently more, please go to our web site at Bose Digital Radio.
Satellite Radio Technology
Friday, November 5th, 2010Satellite radio technology is similar to cable or satellite TV and it is certainly here to stay. There are several reasons for this: the quality of the broadcasts is higher, the quality of the equipment’s reception is higher and the general coverage of the station, that is to say the so-called satellite’s footprint is much greater as well.
This has the effect that if you travel long distances, you will be able to stay with the same channel without having to look for a new one every forty or fifty miles as you need to do with AM or FM radio stations.
In order to reach this quality, the recording and playback speed needs to be around the 384 kbps level. The music tracks are catalogued in a similar way to the MP3 system, which uses names called ID3 tags.
Each channel on satellite radio attempts to create its own identity. A music channel might try this by playing music only of one type or from only one period or decade. This means that you may get a satellite radio station called 1970’s Punk music or Twentieth Century Classical Music.
On some channels, the music controller or disc jockey will choose, say, fifty minutes worth of music, will listen to it in order to ascertain that the quality and the order are correct and then let the computer play it over the airwaves. This leaves ten minutes every hour for the news and then the sequence can be replayed automatically.
Satellite transmission uses digital recordings and each station is encoded on a different frequency. Similarly, each decoder, say, in your car or your home has to recognize and decode each station separately too. This coding and decoding is done extremely quickly, in fact in what is called ‘real time’.
The resulting binary or digital code is then translated into analogue signals so that your speakers can reproduce it. This process creates sound which is just about of CD quality.
The transmitting satellites are in a geo-stationary orbit at 23,000 miles above the Earth and have a large footprint which is the name given to the area of ground that is capable of receiving their transmissions.
In America, for instance, the two regions concentrated on at first were the densely populated east and west coasts in order to maximize potential revenue. One satellite would be incapable of covering the entirety of the United States in that orbit.
In order to receive satellite transmissions, you will have to use a special antenna on your decoder. This antenna must be capable of receiving L-band transmissions for it to be of use.
These new antennas are a huge improvement on the parabolic dishes (equivalent to those used for satellite television) that one used to have to have in order to take advantage of satellite radio technology
Owen Jones, the author of this piece, writes on a variety of subjects, but is now concerned with Bose radio alarm clocks. If you would like to know more, please visit our website at Bose Digital Radio.
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