Archive for the ‘Internet Radio’ Category

Various Types Of 2 Way Radios

Monday, January 17th, 2011

Radios that can receive and transmit communications are known as 2 way radios. Some common examples are walkie-talkies, CB radios and even cellular phones. While these products are very different in nature, they are common in that they receive and transmit communication and are classified as 2 way radios.

There are many uses for 2 way radios, including a camping trip with the family where walkie talkies help everyone to stay in touch. When in the wilderness, a cell phone is not likely to have a signal and this is why walkie talkies are so helpful. If individuals should get separated from one another while camping, having a way to remain in communication is invaluable. In order for 2 way radios to work, individuals must be on the same frequency or channel to communicate. Before separating, families should make sure that everyone is on the same channel incase the devices are needed.

The uses of other 2 way radios, such as cell phones, are more obvious. Car problems while out on the highway can be a major issue unless you have a cell phone to keep you in contact with the outside world. In addition, landline phones often have problems and may be out of service temporarily. In many of these instances, however, cell phones are still operational and can offer a way to report the outage to phone companies, stay in touch with family and friends or make emergency calls if needed.

There are a number of places to find 2 way radios, including retail and specialty stores. The internet is also a wonderful way to find 2 way radios in a variety of styles, features and price ranges. Most electronics feature a manufacturers warranty when purchased new, so take note of any such offerings when browsing for 2 way radios. Warranties often last for 90 days to one year and cover repairs andor replacements of any product that is defective as a result of workmanship or materials. It is best to keep any warranty information tucked away in a safe place for later retrieval.

As a final thought with 2 way radios, it is best to test the product before putting it to actual use. In other words, the best way to test a walkie talkie is not when you are already out on a camping trip. The best time would be before you leave home and always be sure to test the distance at which you can still communicate without any problem.

Sonys Take on Satellite Radio Subscriptions

Monday, January 10th, 2011

With satellite radio becoming all the rage, it may be difficult to understand why you should pay for radio when you can get the standard AM and FM stations for free just like you always have. The main reason is that XM radio provides you with a variety of programming that you cannot find anywhere else, without any regards to where you are at, and without the annoyance of constant commercial breaks.

Sirius and XM Radio, the two main contenders in satellite radio subscriptions, are rapidly gaining listeners. Already the total listener count is in the millions. Sony offers a complete range of products for your home, car and anywhere else you can think of that are all ready to go for satellite programming. That way you can enjoy the music that you love regardless of where you are or what you are doing.

One thing for you to consider when thinking about satellite radio is this: where is the cost really? Yes, it is true that you will pay for programming. However, the amount of music time is much greater than your traditional radio time. With standard AM and FM programming, the cost of running comes from sponsors and commercials, which means that you will spend a good portion of your listening time hearing radio ads. Plus, stations are limited to what they will play based on their audience, so there is a good chance you will hear the same songs repeated over and over throughout the day.

With a satellite subscription, you can enjoy your music or listening preferences wherever you are regardless of the time of day. You can listen to the latest in up-and-coming artists, round-the-clock-news, or your old favorites. Not to mention that all of this happens on digital-clear sound no more static or trying to adjust your tuner to get your favorite station in. Plus, the music channels are all commercial free, and many radios will even have an on-screen display letting you know who the artist is and what song is playing at any given moment.

With the newness of satellite radio, you may be wondering what the difference is between Sirius and XM. Depending on the car you drive, your service may come with the radio that is part of the standard equipment. Both companies offer monthly subscription plans for about the same price. The big difference is the programming that is offered. Both offer music channels in nearly every genre imaginable, and have their own variety of special live interviews and performances. Sirius has exclusive deals with the NFL, NBA, Howard Stern and Martha Stewart, while XM has deals with Major League Baseball, NASCAR, Opie and Andy, and Oprah. Depending on listening tastes, these may affect your decision of which service to use.

The biggest need with satellite radio is to ensure that you have the equipment you need. Sony can help you with this with a variety of products that are available for your home, your car, and even portable audio players.

If you are hesitant to run out and buy a bunch of new equipment, Sony has an answer for this as well. The XM Mini-Tuner is compatible with all XM Ready receivers. You set up the subscription to your XM Mini-Tuner, and then simply plug it into the device that you are ready to use. Car radios will soon be able to work with this technology, as well as all your other favorite satellite radio devices.

With all this in mind, it is no wonder that satellite radio is gaining popularity so quickly. You are sure to find the product and service that works best for your personality and lifestyle with no trouble at all.

Sony Radios Just Hear your Choices

Monday, January 3rd, 2011

Sony offers a wide variety of radios to choose from. Their large radio selection offers radios of different sizes, costs, and functionality.

One type of popular radio that Sony offers is the radio walkman. Currently there are seven styles of the radio walkman available to purchase. The Ultra Compact Walkman Player SRF-M97 is a very small, lightweight, stylish model. It allows users to preset twenty of their favorite stations. It offers a AM/FM tuner and a clock. It also has a unique negative display and is ideal for using while jogging or any type of exercise. It retails for $59.95.

The Sports Headphone SRF-HM10 boasts a new lightweight ergonomic sports design. It has a digital FM stereo radio with fifteen presets. It is water resistant and has a rubber grip design for maximum comfort. This model sells for $49.95.

The S2 Sports Street Style Radio Walkman SRF-H11 is designed for hands free use. It is water resistant and has a mega bass sound system. It has an ergonomic design and has an AM/FM stereo analog tuner. This model can be purchased for $39.95.

The four additional radio walkman styles are the S2 Walkman Armband Radio SRF-M85V, the TV/Weather/AM/FM radio Walkman SRF-M37V, the FM/AM Headphone Radio Walkman SRF-H4, and the AM/FM Radio Walkman SRF-59SILVER.

The next type of radio in Sonys lineup is the portable radio. This style is designed for the consumer to take with them. Currently there are six portable radio models available, the Four Band Shower CD Clock Radio ICF-CD73VWHITE, the Four Band Shower Radio ICF-S79V, the Emergency Radio ICF-B01, the Portable Four Band Radio ICF-M410V, the Portable AM/FM/TV/Weather Band Radio ICF-36, and the Pocket AM/FM Radio ICF-S10MK2.

Sony also features a tabletop radio in its line up. It is called The Radio ICF-M1000. It has a stylish high gloss black textured cabinet with a white backlit prismatic LCD display with clock. It has an AM/FM digital tuner with adjustable wide range tone control. This radio sells for $149.95.

Sonys radio lineup also feature two nursery radio monitors. The 900 MHz BabyCall Nursery Monitor NTM-910 has 27 channels to minimize interference. It is voice activated, and has a built in rechargeable battery. It also has five sound sensor activity lights and can be bought for $49.95. The other nursery radio is the 900 MHz BabyCall Nursery Monitor NTM-900 it offers the same features as the NTM-910, but with only nine channels.

Sony also offers four world band radios. These models are the FM Stereo Multi-Band World Band Receiver Radio ICF-SW600GR, the Digital Tuning World Band Receiver ICF-SW35, the World Band Receiver Travel Clock Radio ICF-SW12, and the Twelve Band World Band Receiver Radio ICF-SW11.

Sony also has four CD clock radios in their line up. These four models are the Four Band Radio ICF-CD863V, the TV/Weather/FM/AM Four Band CD Clock Radio ICF-CD855VSIL, the Four Band Clock Radio ICF-CD843V, and the CD Clock Radio ICF-CD814WHITE.

Sony also has four kitchen radios in their collection. These kitchen radios feature sleek designs to fit under kitchen cabinets perfectly. These models are the Under Cabinet LCD-TV Kitchen Clock Radio ICF-CD555TV, the Kitchen CD Clock Radio ICF-CD553RM, the Kitchen CD Clock Radio ICF-CD543RM, and the Kitchen CD Clock Radio ICF-CD523.

Sony also boasts nine AM/FM clock radios in their selection. These radios vary in size, color, and price. They all offer stylish AM/FM tuners with large clocks displayed. The models are AM/FM Clock Radio ICF-C773, the AM/FM Digital Synthesized Tuner Radio ICF-C743, the AM/FM Clock Radio ICF-C630, ICF-C180 Clock Radio with Auto Time Set, the Large Display AM/FM Clock Radio ICF-C492, AM/FM Clock Radio ICF-C112BLACK, WHITE, and the Large Display AM/FM Clock Radio ICF-C212WHITE, and BLACK.

Radio Advertising: A Long History Of Excellence

Monday, December 27th, 2010

For years people have tuned into radio talk shows, radio morning shows as well as all those broadcasters and their funky styles. If you are like many, you flip on the radio as well. From a marketing standpoint though, do you realize the value of radio advertising? While many say that your marketing pounds should be split into various categories, you will find that this is an excellence place to start. What does radio advertising have to offer you?

Consider first the amount of people that are on the radio at any given moment. In the morning, as people get dressed for work or school, the radio is on. When they get into their cars to head to work, the radio is on. The radio is playing in the office, on the way home again and maybe they turn it on before bed as well. It is the first thing that people wake up to. Radio advertising is a powerful medium.

You can put just about anything on it as well. You can fill your marketing pound tightly by putting it on a number of various types of radio advertising markets. Young adults tend to be one of the largest radio listeners in the afternoon hours. Market your product effectively to them during those hours. Adults love to tune in on their way to and home from work. Market your radio advertising pounds to them during this time. In fact, you can even market your product to young children on various radio stations geared towards them.

Radio is very versatile and allows you to tell your story for a smaller amount of your budget with excellent results. You will see that there are many reasons to head to the radio advertising market with your next product. Check out how well it can work for you and be impressed.

Push To Talk vs. Two Way Radios

Monday, December 20th, 2010

Push to talk is often confused as being the same thing as a two way radio. While it is true that two way radios use push to talk communication (think walkie-talkies), push to talk or PTT is a feature that can be added on to a cell phone plan for use on your cell phone. Two way radios on the other hand, are simply two way radios, with no additional features.

Two way radios have utilized the push to talk feature for decades in a variety of settings. Until recently, two way radios have been used primarily by industrial type workers, emergency crews, and utility companies. And although the communication takes place on a secure channel, the conversation is not necessarily one kept under a shroud of privacy. When using push to talk through your cell phone provider, the communication can be as private as a regular cell phone call.

Using push to talk is much like the old days of playing with walkie-talkies with your friends around the neighborhood. Only now, when push to talk is used as an additional feature on your cell phone, it has the capability of maintaining communication to national, and international customers. And instead of crackly, indecipherable conversations as was typical with walkie a talkie, the reception with push to talk is as clear as a standard phone call.

A perfect example of the benefit of using two way radios is in an emergency situation. An emergency dispatcher using a two way radio has the ability to communicate with and dispatch an officer to an emergency while maintaining contact with an emergency caller. The officer dispatched to the emergency can communicate with the dispatcher on his way to, and at the scene of the emergency with the touch of a button. If a cell phone were used in an emergency situation rather than a two way radio, critical time could be lost waiting for a cellular phone connection. When using two way radios, communication between users is instantaneous.

The way push to talk works through your cell phone is fairly simple, like using walkie- talkies; only radio IDs similar to phone numbers are designated for specific users, allowing for the privacy of a cell phone conversation. Here is a simple guide to using your push to talk phone:

Enter the radio ID of the person you want to contact

Push down and hold the push to talk button on the phone. When a specific tone is emitted, usually resembling a beep beep sound, the call is clear and ready to be made

You are connected! Be sure to hold down the push to talk button while youre talking.

When the other person is ready to talk, let go of the talk button and wait for their response.

Wait until you hear the tone indicating its clear to talk, then push and hold down your talk button to respond.

When youre finished, push the talk button again, and the call is complete.

As with any service, there are pros and cons to using the push to talk service. Although it is estimated there are currently 20 million (and growing) push to talk customers, not everyone in your address book is likely to be available through push to talk. This limits the number of personal calls you will likely be making through push to talk. If however, this is something that will be used for a specific business related purpose, and everyone you need to talk to is guaranteed to be in the push to talk network it can be amazing.

Imagine an event such as a rock concert in a large stadium, with several outlying parking lots and hundreds of events staff. Using push to talk communication, calls can be made from one event staff to another, (one to one) or from the head of the event to all 200 employees (one to many, often called group push to talk). Instantaneous communication at a huge event, with multiple employees could potentially eliminate any number of unforeseen complications.

This expediency in communication is easily translated to any number of industries. In a situation such as a major metropolitan power outage, utility workers can have the capability of communicating between one another even while regular modes of communication are out, even cell phone towers. In a situation such as this, the coverage area is more limited, reaching a few miles rather than across state lines. Nevertheless, this type of communication is perfect for a power outage, enabling utilities and utility workers to restore utility services while maintaining communication with one another. Some carriers even have the ability for users of their networks to use the push to talk functionality off-air. This means users working in very remote areas where cell towers are unable to reach, such as logging companies working deep in wooded areas, can still use the radio functions to communicate effectively and instantly to one another on the same carriers network.

Yet another benefit of push to talk is that it isnt cost prohibitive; minutes used across push to talk networks arent deducted from monthly cell phone minute allotments. A basic plan for push to talk can be purchased as an additional feature for a regular cell phone. A plan with unlimited minutes between push to talk customers is around 9.99 on top of a regular cell phone bill. Family plans can be purchased for push to talk groups, starting at 19.99per month. In addition to this benefit is that of international communication capability. With an international talk plan, calls can be made across international boundaries without the hassle of extremely high rates.

As opposed to regular cell phone conversations, push to talk is perfect for immediate, brief conversations. This feature is ideal for business meetings, or something as simple as instant communication between two spouses in a crowded grocery store. Push to talk phones are also cropping up all at amusement parks across the country. Teenagers can split up across an amusement park while maintaining contact with parents, all without deducting minutes from a monthly cell phone allotment or incurring roaming charges when out of network.

As with any type of communication, there are a few drawbacks when using push to talk services. One such disadvantage is that nuances of a regular conversation are lost as only one person at a time can talk while the other listens. This is especially true because there is a bit of a lag in time between communications, making the conversation seem a bit stilted. Another drawback is how obnoxious this type of conversation can be in a public place. Not only does someone within the vicinity of the call have to listen to your side of the conversation, they have to listen to the other end as well. Considering the current lack of cell phone manners, this adds an entirely new level of etiquette and privacy concerns.

Another drawback of using push to talk instead of a standard two way radio is the monthly fee attached to your cell phone bill. A two way radio can be purchased for a one-time cost of anywhere from 20-250, while a push to talk cell phone customer can pay 9.99per month up to 19.99per month for similar features.

There are several differences between the push to talk feature of a cell phone and two way radios. Each has unique benefits and drawbacks catering to specific ranges of customers. A two way radio is a great device to stay in contact with your 14-year-old while visiting an amusement park. Its doubtful however that you would want to give the same 14-year-old unlimited access to your push to talk cell phone.

It seems likely that although there are a limited number of customers currently connected to the cell phone push to talk network, its only a matter of time before that changes. While Nextel was once the only provider of this service, almost all other cell phone networks either currently offer services, or have plans in the immediate future to do so. Although it was once the stand alone feature differentiating Nextel from other networks, this is no longer the case. SouthernLINC Wireless, AT&T & Verizon all offer push to talk packages, and other networks are not far behind. Just as text messaging was once a rare cell phone feature, now its hard to imagine anyone buying a plan without it.

How Does Satellite Radio Work?

Monday, December 13th, 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 subscribers 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 at http:www.review6.info 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.

Getting The Radio Signal From A Satellite

Monday, December 6th, 2010

You have probably been hearing about satellite radio for a while and of course, lately there has been plenty of news about Howard Stern, he is bringing in many listeners to Sirius and the fan base is growing quickly.

One of the big differences between regular radio and satellite radio is that with satellite you get hundreds of channels that are of digital quality, plus on the screen you know who is performing because it gives you that information. There are very few channels on satellite radio that have commercials. With over 100 channels to choose from there is always something good to listen to. No commercials just the music you want to listen to , you don’t have to listen to salesmen, fuel companies, food advertisements, you will have no static, you will be able to listen to your music or talk show with no interruptions 24 hours a day. There are so many channels; a few of them are comedy, local weather and traffic, women’s issues, sports, old time talk shows from the 20s to the 40s.

Through digital magic, you will not get static or any other types of disturbances you would normally get from an analog radio. The possibilities do not end there though, as it may even be possible for digital stations to broadcast pictures and videos directly to your car or home stereo through the magic of digital broadcasting. When receiving a signal from satellite the signal is completely digital and everyone knows a digital signal sounds cleaner and there is no static, you either get the signal or there is not signal. The signal is encoded and sent to the satellite and then it is sent back down to a receiver which it will be decoded and then the receiver plays the sound. If you find you loose the signal it is because when you travel you move along the earth and since the earth is round you will sometimes loose the signal because the satellites are traditional on the horizons.

Now, people you don’t need to switch stations when driving because you cannot get a clear station in, you can listen to the same station or hundreds of other stations ranging from news, music and news in better quality than AM or FM bands. To receive the digital audio streams you will need a antenna to receive the signal.

Its small, portable and it fits in your purse or pocket, don’t be fooled because they are small, they give the best sounding quality a radio can offer. The auto manufacturers are installing satellite radios to enhance the new automobiles, and many stores are now carrying the portable models to be used in the homes.

Satellite radio is subscription based, meaning that you pay a monthly fee for the service. The purchase of a satellite radio and a small monthly fee will open a whole world of ad-free radio listening to you. You will need to pay a monthly or yearly subscription fee to enjoy satellite radio. Many of the automobile dealerships and manufacturers offering many different types of incentives, so are giving 3 months free or even up to 6 months of free service to get you hooked, they are also throwing in no activation fee.

Features Of The XM Radio

Monday, November 29th, 2010

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 its 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 poprock 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 from http:www.reviews2.info.

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 cant 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 peoples 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.

Do You Know The Ipod Clock Radio

Monday, November 22nd, 2010

There is little doubt that the iPod clock radio is one of the many features that has propelled the Apple MP3 player line to the amazing success it has had. It seems that Apple has thought of almost any accessory or add-on that the consumer could want, and all of them offer the typical high quality sound equipment that Apple iPod lovers have come to expect. The iPod clock radio is no exception to the rule. With its stylish design and lightweight durability this is a clock radio really worth having.

Selling at right around 100.00 US, the sleek design of the iPod clock radio makes it ideal for any type of home dcor. It comes in two colors, white and black, with the front of the system designed for speaker space and an easy to read backlit display that gives the time with a backlight adjustment that can go from very dim to very bright. This is a great function for those that have difficulty sleeping with any type of light in the room, as well as for those that want to be able to clearly see the time at a quick glance.

The iPod clock radio has a dock for the iPod located directly behind the button controls for the AMFM radio that are on the center top of the radio unit. Since the radio doubles as a docking station, the iPod batteries will be completely charged in the morning, even if you wish to program it to play softly all night. The adjustable sleep and wake up features allow you to choose the volume and length of time that the sleep unit will function before automatically shutting off. There is also a gradual wake feature that allows you to wake up to your favorite tunes. The radio also can serve as the wake up sound, or there is an optional buzzer or alarm that can be used as well. The volumes, when using the wake or sleep function, will gradually increase or decrease, allowing for a very natural wake up or sleep option.

In addition the iPod clock radio has a remote control that allows you to adjust the volume or any other features on the clock simply and without having to move. As with any other iPod accessory there are high quality stereo speakers built into the radio to give the same clear, high quality sound you would get if you were listening directly to your iPod. The iPod clock radio is one of the most popular of the larger iPod accessories and makes a great gift for yourself or your favorite music lover.

Digital Radio: The New American Revolution

Monday, November 15th, 2010

Americans are nothing if not selectively fickle. It took almost no persuasion for them to abandon their analog landline technology-based telephones, camera, and record players in favor of digitally based alternatives.

But when it comes to their listening pleasure, Americans have been fighting the digital revolution with as much gusto as they fought the American one. They are however, beginning to come around. Having spotty reception, or none, on long commutes or when in the back country on a recreational outing, or simply because they live in a particularly reception-unfriendly area has finally made many Americans start to take notice of their digital radio options.

The first digital radio alternative is satellite radio. Both Sirius and XM Satellite radio have eliminated the commercials from their digital radio transmissions and are beaming their broadcasts into the automobile receivers of millions of US drivers, no matter where they are located. The glitch is that the service is subscription only, and many older cars do not have the satellite digital radio receivers. And in some large urban areas, the reception is lacking, although Sirius and XM are working on fixes for their problems.

But between them Sirius and XM have still managed to collar only fifteen million of the estimated two hundred and thirty million AMFM listeners in the US. The two companies have applied to the FCC for permission to discuss a merger, which will cut costs for both. But even a single entity may never move satellite digital radio beyond the niche stage.

The real up-and-comers in the US digital radio field appears to be local radio stations, both because they do not charge their listeners, and because the price of digital radio receivers is beginning to drop rapidly. At the beginning of 2006, a digital radio receiver cost a minimum of 500; now the most expensive are half that. With rebates it is frequently possible to find a digital radio receiver for under 100.

Hybrid digital radio is the result of combining digital power with the regular broadcasting of an AM or FM station. It costs a traditional broadcasting station upwards of 100,000 to make the transition to Hybrid Digital technology, and even then they have to pay royalties to iBiquity, which developed the process. But more than 1300 radio stations have either bought, or plan to buy, the necessary equipment.