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Most of these issues can be easily solved by giving your radio a few extra minutes to finish updating the first time you power it up on or after August Other potential issues and troubleshooting tips are provided below. Just give your radio a few extra moments to update when you first turn it on. Your radio may need minutes to receive the updated lineup from our satellites.

During this time, the audio you hear may not match what is shown on your display and you may see messaging such as "updating channels" or "acquiring signal" on your radio's display. Let it update. Please do not change channels while your radio is updating, as this will delay the update from being completed. Visit www. Some listeners may need to take additional action on or after August 17 if one or more of the following applies: You have an XM dock and play radio and your audio does not match the channel you are tuned to, your presets return the wrong channel or some of the new channels are missing.

You have a Sirius radio and you use the channel preset or channel blocking features on your radio. You have a Sirius or XM radio model that is able to record programming and you have set up a specific program or programs to be recorded. You are having some other technical issue with your radio that began on or after August Probably not. On August 17 or whenever you first turn your radio on after that date , your radio preset buttons should automatically sync to the new locations for any channels that you've chosen as presets.

If this does not happen automatically, follow the instructions included with your vehicle owner's manual to quickly update your presets.

Will my Sirius radio presets point to the new channel locations? If you have a Sirius radio and your presets no longer take you to your favorite channels, you may have to reset one or more of your preset buttons.

This is easy to do and should only take a few moments. Click here to see the full channel guide—or to customize your own, click here. I have an XM dock-and- play radio. The audio does not match the channel I am tuned to. The preset buttons return the wrong audio or some of the new channels are missing. What should I do? Some XM receivers will continue trying to update even after they have been properly updated.

Simply push the POWER button to turn your radio on, wait three to five minutes, and then press the POWER button again to turn the radio off turning the car's ignition off and on does not count. Your XM radio should work properly the next time you turn your radio back on. If this occurs, you will need to update the preset button labels on your radio. This is a simple procedure:.

The preset button label should then match the name and number of the channel you're tuned to. Follow the instructions that came with your radio to quickly reset those channels.

A small number of dealer-installed XM Satellite radios used predominantly in Toyota, Lexus and Scion vehicles may not properly adjust to the new channel locations on or after August If you have one of these radios you may notice that the programming you hear does not match the channel name and number you see on your radio. As you tune up and down the dial, the sequence of channel names you see may not match the sequence of programming that you hear as you change the channels.

Click on the appropriate link below for printable instructions for performing what is called a "Channel List Update," the process that will correct this behavior. Important: There are different sets of instructions based on your vehicle and model year. How will I know if my radio actually needs to be refreshed? Allow your radio to update. This might take a few minutes. When your radio has finished updating tune to Channel If you hear Met Opera Radio , you're all set!

You do NOT need a refresh. If you hear nothing, if the channel number does not appear, or if you see a message like "unsubscribed channel", you will need to refresh your radio.

If you hear Turbo , you're all set! We apologize for any inconvenience this may cause. Click here for a copy of these instructions that you can print out and take to your vehicle. Certain older Sirius radios lack the appropriate bandwidth to receive over channels, including many which have been added in recent years. We apologize for any inconvenience. Ready for Liftoff: The first rocket carrying a Sirius satellite into orbit was launched on 5 September Satellite communication is contingent on maintaining line of sight LOS between satellite and receiver.

What made satellite radio seem impossible was that vehicles were inevitably going to pass under bridges, drive under tree canopies or into parking garages, enter tunnels, or become isolated in deep canyons of the natural or urban variety.

The challenge facing Briskman was to design satellites and complementary receivers that would somehow maintain LOS as much as possible. If you were to drive into an underground garage and park, the signal would be lost, and nothing could be done about that. But if LOS was lost only briefly, there had to be some way to make sure the receiver could keep on playing until it could pick up the signal again.

A big part of the solution to maintaining a LOS connection between receiver and satellite was satellite diversity. Image: Edison Research. In cities with tall buildings, the satellites are supplemented by terrestrial repeaters, land-based antennas that beam signals directly into urban canyons. There are hundreds of thousands of underpasses in the United States alone, Briskman noted, and going under any one of them could block both satellites.

The receiver contains a 5-second buffer, so that if the satellites are blocked, the receiver plays out the buffered data. The receiver is where incoming signals are decoded and decrypted. The Sirius radio is unusual, Briskman says, because it actually has three independent receivers, one each for the two satellites and one for terrestrial repeaters.

To deal with three separate receivers, he devised what he called a maximal-ratio combiner. If there are two or three strong signals from the receivers, this circuit puts them in phase and—as the name suggests—combines them. Conversely, if one or two of the signals is bad, it suppresses them. And the Sirius radio actually comprises two separate units. The other is mounted on the roof or the trunk. It holds the antenna and a low-noise receiver. It takes the signals coming in from the satellites at slightly different frequencies in the megahertz band , amplifies them, downconverts them to around 75 MHz, and runs them in to the first unit in the main cabin.

The omnidirectional antenna is fairly small, about 30 millimeters wide, or roughly the size of a U. Briskman is to this day exasperated that automakers typically insist on packaging his satellite radio antenna with a GPS antenna, which makes the combined antenna unit much bigger than he would like. Mission Control: In the early s, Sirius controlled its network of three satellites from a control room in New York City.

Photo: SiriusXM. Briskman recalls that the implementation of both the satellites and the radio receivers went smoothly. The part of the development that was most taxing and required the most iterations was designing the user interface, a process exacerbated by every different carmaker having different notions of how it should work. In those heady early days, Sirius had a rival, called XM. Sirius was the first to secure a broadcast license, but XM beat it to the market, going live in September of Sirius began broadcasting in February of The satellite radio market was tough, however.

XM would eventually file for Chapter 11 bankruptcy protection. The two companies argued that the only way for both to survive was to merge, and they got permission from regulatory authorities to do so in Since the merger, the combination has had enough subscribers to remain profitable. SiriusXM kept improving its technology. The company reduced that pair to one chip at nm in The postmerger entity kept at it; in the chip was scaled down again to 40 nm, Briskman notes. Hartenstein was named chairman of the XM half of the company in ; he remains a board member of the combined SiriusXM.

SiriusXM radios are now installed in three-quarters of all automobiles manufactured around the world.

Craig S. China has taken another step toward semiconductor independence with Alibaba announcing the design of a 5-nanometer technology server chip that is based on Arm Ltd. But, impressive as that feat is, an even more significant chip design development by the Chinese tech giant may be making available the source code to a RISC-V CPU core its own engineers designed.

This means other companies can use it in their own processor designs—and escape architecture license fees. The company made both announcements at its annual cloud convention in its home city of Hangzhou last month.

The Chinese government is funding a lot of startups that are designing a variety of chips. The number of newly registered Chinese chip-related companies more than tripled in the first five months of from the same period a year ago. And the biggest Chinese technology companies like Alibaba, Baidu, and Huawei are developing their own chips rather than banking on those from Intel, Nvidia, and other United States-based companies. China is intent on developing semiconductor independence, both in design and manufacture of state-of-the-art chips.

You could drive from Tacoma, Wash. Not only would you never hear static interfering with your favorite tunes, but the music would be interrupted by few or no commercials. Satellite radio , also called digital radio , offers uninterrupted, near CD-quality music beamed to your radio from space.

XM and Sirius were both in debt, and believed a merger would quickly solve that problem. They thought that the merger would also lead to lower prices and more programming choices for consumers. Some people were skeptical about the two companies joining, though, fearing a monopoly would only reduce competition, raise prices and affect consumers poorly. Sirius and XM received approval from the U.

Department of Justice, but the companies couldn't move until the FCC begrudgingly allowed the merger to go forward in July The new company goes by the name Sirius XM Radio.

In this article, you'll learn what separates satellite radio from conventional radio and about the equipment you'll need to pick up satellite radio signals.

Satellite radio is an idea over a decade in the making. In , the U. Only four companies applied for a license to broadcast over that band.

The FCC gave licenses to two of these companies in Listeners aren't able to pick up local stations using satellite radio services, but they have access to hundreds of stations offering a variety of music genres. Each company has a different plan for its broadcasting system, but the systems do share similarities.

Here are the key components of the two satellite radio systems:. Satellite radio works a lot like satellite TV -- you purchase a receiver and pay a monthly subscription fee for a certain number of channels. For the moment, there are slight variances in the three satellite radio companies' systems.

In the next three sections, we will profile each of the companies and their current satellite radio services. XM and Sirius each offered more than channels. Although the companies merged, both XM and Sirius still exist as separate services. Subscribers to one services can purchase an additional "best of" subscription to the other service. While XM Radio and Sirius have merged into a single company, the two services aren't fully integrated yet.

Part of the reason for this is due to differences in hardware and software. XM Radio uses two Boeing HS satellites, appropriately nicknamed "Rock" and "Roll," and two BSS satellites it calls "Rhythm" and "Blues," placed in parallel geostationary orbit, two at 85 degrees west longitude and the other two at degrees west longitude.

Geostationary Earth orbit GEO is about 22, miles 35, km above Earth, and is the type of orbit most commonly used for communications satellites. A design flaw in the HS satellite caused its solar panels to function inefficiently. XM launched "Rhythm" on February 28, , and "Blues" on October 30, , to replace the older satellites. XM Radio's ground station transmits a signal to its two active GEO satellites, which bounce the signals back down to radio receivers on the ground.

The radio receivers are programmed to receive and unscramble the digital data signal, which contains more than channels of digital audio. In addition to the encoded sound, the signal contains information about the broadcast. The song title, artist and genre of music are all displayed on the radio. In urban areas, where buildings can block out the satellite signal, XM's broadcasting system is supplemented by ground transmitters.

Each receiver contains a proprietary chipset.



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