How does satellite radio work?

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.  

Satellite radio services have digital broadcast centers where a huge amount of music in digital format as well as CD format is stored. Radio programmers have the task of selecting which song has to be played at which time. There are also a lot of studios managed by digital radio companies where artists perform live. All songs and material are transmitted to the satellites in digital format so that the signal contains very high quality sound. The signal is encoded by the satellite and then retransmitted to the repeaters antennas, which then transmit it to the radio receiver which decodes it and plays the sound. The entire 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. Once you make a subscription to a satellite radio provider you will need the appropriate radio equipment. Traditional radios cannot decode the signal received from satellites so you will need special equipment. 

The popularity of satellite radio has exploded due to many technological advancements that enabled manufacturers to offer the receivers at very attractive prices. The fact that satellite radio is commercial free for many of its channels is also a major selling point

Features of the XM Radio

XM Radio provides over 150 programs that include music, sports and entertainment, traffic and weather channels.

The music area has the largest number of channels. Here are 68 music channels that you can enjoy and where you can listen to your favorite music whether is from the 60s, the 90s or it’s the new released music. There are music-by-the-decade channels that include the 40s, 50s, 60s, 70s, 80s and 90s songs which are mostly pop/rock outlets, the Top 20 channel, Love Songs, Movie Soundtracks, Show Tunes, MTV, VH1, and a Global hits channel. For those you prefer new music there is the Unsigned channel and the XMU channel. The last one can be compared to a college station. If you are a jazz fan, XM offers you live music from the Blue Note club and the B.B. King Club in New York City.

There are entertainment shows on XM radio hosted by Tom Perry, Snoop Dog or Quincy Jones. Comedy shows may be found on the High Voltage channel where shock jocks Opie and Anthony do their job now uncensored. In totally, XM has three comedy channels including a family comedy channel. Beside these, there are more radio channels like Playboy Radio and Public Radio hosted by Bob Edwards which includes a line of NPR shows that you can enjoy whenever you like.

If you are a sports fanatic you can choose from a good variety of channel dedicated to sports that are provided by XM radio. This includes college football and basketball, NASCAR and Major League Baseball. You can easily listen to the Bowl Championship Series to find out which team is going to the next level, the NCAA Division I football champion.

With a subscription from XM, you will have 38 channels of sports, news and talk channels. For example, ABC News & Talk, BBC World Service, CNBC, Court TV, C-Span, CNN, CNN Headline News, Discovery Channel, E Entertainment, two ESPN channels, Fox News, NASCAR Racing are a few talk station to which you can listen. Local weather and traffic channels are provided too and in totally, they are 22 channels. 

Sound clearance depends on the subscription you have. If you have satellite radio from XM, the sound has more quality than the one from Sirius, but still you can’t say that is the same as a CD. You can say that the sound is somewhere between the sound of a CD and AM radio. Hopefully, in the years that will come, the sound quality will improve.

As this technology appeared so did a new line of hardware that can match people’s desires. 

And XM has new things to offer like the Delphi XM MyFi which is a small receiver, actually the smallest in the world that can include up to five yours of XM content to which you can listen anywhere you like. Another is the Delphi SkyFi2 which has a TiVo-like 30-Minute Replay feature so, you can rewind, push the pause button or just play it forward to hear music, news or anything else you stored on the it. This equipments are also produced by Sony, Alpine, Pioneer and of course others.  

Delphi XM Roady Radio

The Delphi XM Roady Radio Receiver is the smallest radio receiver available on the market. It’s the next generation of radio, not only for being America’s most popular satellite radio service but for its power of choice, giving the listener the pleasure of choosing what kind of songs he wants to hear – wherever, whenever he wants.

In short terms, you can listen to more than 170 digital channels, live concerts, daily news, live commentary on sports, etc. Plus, listening to music on your radio without any commercial is like a dream come true. The receiver is somehow smaller than SkiFi XM Receiver but it has a sharper look. Being able to use it with no major problems. The interface is user-friendly and the installation of  additional accessories lie the Roady FM Modulator or the power adaptor is very easy. As for the price, where you can use it and on which system, you can take a look below:

Price: $119.95

Use: Car or Home

System: XM Satellite Radio

The features of the Delphi XM Roady Radio are plenty:

- plug and play: you can easily connect to your home kits, car or audio systems, whenever you want

- you can search for channel, presets or category

- seven color displays

- smallest radio available on the market, together with the smallest antenna

- optional home audio

- the possibility of saving a total of 15 songs information

When buying a full kit, you will find in the box the following: receiver, micro-antenna, three faceplates, cigarette lighter power adaptor, cassette adaptor, universal mounting bracket and manual. It is told that the Delphi XM Roady is the direct competitor of Terk XM Commander, being slightly less expensive if you buy the Commander without the FM Modulator. As for the receiver, well.. how small can it be? It is very small. Like I said, it is the smallest receiver you can find out there to buy. The colors are quite brilliant, so that we could spoil our looks by watching red, green, sky blue, orange, night blue, purple and pink. If you’re really a fashion maniac, you can combine the colors with the three colored faceplates for a dazzling look. A very nice option on the Delphi XM Radio is the TuneSelect, where you can save a total of 15 songs, with detailed information upon them.

As for accessories, you can buy an additional home kit (base, antenna, power adaptor, mini-stereo to RCA output cable), Power / FM Modulator (rebroadcasting on the following frequencies: 88.1, 88.3, 88.5, 88.7, 107.1,  107.3, 107.5, 107.7, being available on the market since December 2003),  FM Modulator (which can be found at a price of  $49.99) or Mini Stereo to dual RCA Cable (with that you can connect your Delphi XM Roady to your stereo CD, in case that you don’t have a CD player).

As a conclusion, I can say that the Delphi XM Radio Receiver is a pretty good gadget to buy, the reviews being generally positive. That doesn’t mean you can’t buy something that won’t work as you would expect, but, if you choose the right place to buy (where customer service is a really important thing to notice), you would be very pleased of the acquisition. Overall, for its price it is an extraordinary unit.

Canadian satellite radio

While the United States initiated the satellite radio evolution, Canada is now hot on their trails. The Canadian Radio-television and Telecommunications Commission (CRTC) began hearings in 2004 for applicants ready to develop Canada’s first satellite radio broadcasting. The Canadian satellite radio industry received quite a lot of interest and in the end three main applications were filed: XM filed one in partnership with Canadian Satellite Radio and Sirius filed an application with Standard Broadcasting and the CBC. The third application belongs to CHUM Limited and Astral Media and to many came as a surprise. That was mostly because CHUM Limited and Astral Media came up with a different solution that that proposed by Sirius and XM Radio.

CHUM applied for a subscription radio service that is to be delivered through the already existing terrestrial DAB transmitters. In other words, the transmitters would be the ones receiving the satellite transmission, from where they would continue the broadcast to consumer owned receivers. While the CHUM Limited and Astral Media proposal offers an entirely Canadian approach, the first two bring in a blend of US based technology and Canadian broadcasting channels. XM Radio and Sirius had a slight advantage in the fact that the coverage area of their satellites already existed in parts of Canada, so a small audience was already using their services.  

Three satellite radio services for Canada

The Canadian Radio-television and Telecommunications Commission (CRTC) approved all three applications in June 2005, but with a series of conditions imposed to the three solicitants. Here they are as required by the CRTC:

• A minimum of 8 channels must be produced in Canada and for each Canadian channel 9 foreign channels can be broadcast.

• At least 85% of the content on the Canadian-produced channels (whether musical or spoken word) must be Canadian.

• At least 25% of the Canadian channels must be French-language stations.

• At least 25% of the music aired on the Canadian channels must be new Canadian music.

• At least 25% of the music played on the Canadian channels must be from up-and-coming Canadian artists.

The three companies had to accept these conditions as they are part of the Canadian broadcasting regulations. The US companies and their Canadian partners began negotiations for tilting the rules in their favor. One of the main offers of both the Sirius and XM Radio partnerships was that they would play 50% French content as opposed to the 25% required by the CRTC. AS a results of the negotiations, XM Radio received 5 channels of National Hockey League Play-by-Play in addition to the channels they already had – XMs part of the deal was to cover the Canadian National Hockey League games. The fact that the US satellite industry giants were both allowed to broadcast on Canadian territory determined CHUM to appeal the decision. They motivated their action by saying that the two US companies would simply “suffocate” CHUM with their presence in Canada, not allowing any room for development for the all-Canadian company. CHUM also complained about the deals that were cut with the two US companies. As a response, Canadian Satellite Radio and Sirius Canada said that CHUM is in fact trying to obtain monopoly over the Canadian satellite radio market for themselves. 

Today’s Canadian satellite radio

One of the main complaints of the people of Canada was that the CRTC decision did not require sufficient Canadian content. This made the broadcasters come out with promises of additional French and Canadian content. The Canadian Federal Cabinet accepted the CRTC decision on September 10, 2005. XM satellite radio was launched on the 29th of November 2005 and Sirius was next on December 1. Monthly subscription rates are $12.99 for XM with a one time activation fee of $19.99 and $14.99 for Sirius, without any activation fees. Both companies are expecting rapid increases in the numbers o subscribers, although, in spite of the extra Canadian content they added to their air time, there are still quite a few voices protesting against the potential monopoly the two companies may get to in the near future. 

The advantages of satellite radio

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. 

If you still are not convinced on why you should pay money for something that you can get for free, think about how much time you have wasted listening to commercials and all kinds of other boring stuff on terrestrial radio programs. Traditional radio is not free, despite the popular belief. It is time-consuming and irritating because you have to listen to five minutes or more of commercials so that you can finally hear a song you like. The satellite radio subscriptions are very affordable and, for around 13 dollars per month, you get exactly the programs you want, which you can listen to wherever you are, at the best sound quality.  

Satellite radio is great for you especially if you travel a lot. If you are traveling across the United States of America, for example, you can listen to the channel or channels you want during your whole trip, without losing signal or getting static. If you have a traditional radio, you will have to keep changing channels every hundred miles, but if you are using satellite radio you do not have to do that because the geographically availability of programs is not a problem. Satellite radio subscribers will soon get the chance to watch video programs as well. Both Sirius and XM services have announced their intention of introducing in the near future a variety of video satellite channels that will have some of the great advantages that are currently available to satellite radio: commercial free programs, great quality of sound and vast geographical availability.