For more information on finding and storing these services, see our, There is a possibility some LED Lights can cause interference to DAB and FM Radio Reception, particularly if LED lights are used to replace halogen lights, and retain the original transformer. For more information on interference, please see our RTIS site. This can commonly be caused by high pressure when, during fine weather, radio signals can travel much further than normal.
The DTV coverage map will list all stations in your area. The BBC network stations, e.g. This can commonly be caused by high pressure when, during fine weather, radio signals can travel much further than normal. If possible, check the external cable for any signs of damage, such as cracking and tears. Sometimes a full scan is required. To check what coverage of DAB services are available in your locality, please see our Transmitter checker tool. Check your radio manual for specific instructions on doing a full re-scan. If your car radio is showing no signal or no service for a station you usually receive, this could be down to one of the following things: If you know your location, you can use our transmitter checker to see whether there is a problem. CBeebies HD 202, CBBC 204 We also test that an aerial is easy to set-up and use, that the cable is a decent length and that any built-in amplifier actually improves the performance of the aerial (we find that some don't). An electric motor is used in many appliances such as electric lawnmowers, washing machines, drills and hairdryers etc. The telescopic aerial fitted to stereo portables is a compromise and the radio will often only give really good results if connected to an external aerial.
Check your radio manual for specific instructions on doing a full re-scan. If this distant radio signal is on the same frequency as the one you are listening to it can cause a reception problem. Use our Transmitter Checker to find the best frequencies for your location. We put indoor TV aerials through rigorous tests to find the most effective models for the best Freeview TV experience. To find out if a particular switch is causing the problem, try turning the lights off one at a time. Even if you are predicted to have good reception, you may have problems receiving services using indoor or loft aerials. During wet weather, when covered in moisture, all trees can have an appreciable effect on signals. This normally happens in the summer months, due to high pressure weather conditions in the atmosphere, allowing radio signals to travel further. There is nothing that can be done and the problem will go away when the weather changes. If you are still having problems, it is possible an unwanted signal is the cause. A television signal will always lose some of its strength as it passes along the cable and through the connectors. Unlike the other services, all the predictions of DAB coverage are for indoor coverage. Just select 'detailed view' to get more information. Poor DAB reception can also be caused by equipment used in the vehicle. If anything doesn't add up with an indoor aerial we will investigate further. There are differences between a reception problem and one caused by electrical interference. Otherwise, all the unwanted signals will also be boosted, which can cause pictures to break up. The result is a higher level of interference and a deterioration in both the sound and coverage. Portable radios should be tuned in a location in your home where the best possible signal is received. For more information see our guide on, If you normally can receive a service, but you are now finding it is fading, or you can hear hissing, this could be down to one of three things. Many people are now using low power LED lights instead of the more traditional varieties. Digital TV channels are grouped into bundles, called multiplexes, which are transmitted at different frequencies across the TV band. Make sure any cables between your radio equipment and aerial are connected securely. With all of these potential causes, it is worth keeping a log for at least two weeks to determine whether there are any patterns or trends to the interference. This is causing the buzzing, clicking or pops sounds you can hear. Radio listeners - might experience poor reception or be able to hear an unexpected radio station. To listen to DAB in your car you will need to ensure your aerial is able to receive a DAB signal. However the CAI (Confederation of Aerial Industries) is a recognised trade body which will be able to put you in touch with one of their members in your area. Depending on the transmitter you are using, your aerial elements will need to be mounted flat (horizontal) or on its side (vertical). The government set a target of switching off FM radio services after a set of criteria on digital radio listening had been met. This is because the power used is lower, and is forced to work outside of its normal operating parameters, resulting in electrical impulse interference. This is known as co-channel interference. Portable DAB radios will usually have a telescopic one, but if you are retro-fitting a DAB radio into a car, you may need to add a DAB aerial.
For more information on how to retune manually see our manual re-tuning page. You'll find the checker on our help homepage under the search bar: This will tell you where your local transmitter is, what channels should be available in your area and any planned works that may affect your signal. If you are still having problems, it is possible an unwanted signal is the cause.
Even in good areas an external aerial will guarantee optimum performance and will also ensure consistent listening quality. Some hi-fi’s have external AM aerials that tend to look like many wires wound around a plastic loop. If it is, contact your local council. It is difficult to determine which group aerial you have, or even if it is wide-band. For information on the, The BBC cannot recommend individual installers.
You may need to check that all parts of your receiving system are fully earthed. Please see our help page to see how DAB multiplexes work, Therefore, you may not be receiving this service, as there is not a commercial DAB service in your local area. block or interfere with television signals from local transmitters, or the links between transmitters. In most circumstances the supplied telescopic aerial should be perfectly adequate, and as a rule of thumb DAB aerials tend to work best when vertical and extended at least 35 cm. You may get good, clear reception during the day, but after sunset the signal may fade or become distorted. These problems will clear as the weather changes. For example, some masthead amplifiers are also distribution amplifiers. Use the BBC’s Transmitter Checker tool to determine the best transmitter for your location. These fit directly under an outside aerial and usually the best type of amplifier to fix weak signals. All of the stations in one multiplex should be behaving the same way. This will help you to see if there are, or have been recently, transmitter faults in your local area. Effectiveness at Its Best. Radio reception can drop out when on the move due to changes in topography. The second signal is picked up by the radio moments after the first. Best indoor aerial for use next to windows: 1byone 0.5 mm Paper Thin TV Aerial Why not opt for the … Using our Transmitter Checker, check your transmitter is not undergoing any work. Ideally, this should be on the roof or high up on the outside of the building, though it may also give good results in the loft. By choosing a Which? The signal should return once you move away from these features. This has meant that some transmitters are using frequencies different from those that have been used for many years.
A faulty motor can cause electrical interference. We cannot recommend individual installers. The RDS system is set up to detect local radio travel news. DAB aerials are different from FM or TV aerials, so you need a good quality DAB-specific aerial. See our car radio guide for more information. Try moving the radio to another position, such as near a window, higher up, or another room. For more information see our guide on how weather can affect radio reception. If the TV is able to get a signal and identify the channels on another socket, then you can be rest assured that your TV is fine. You should not re-tune your television. This is similar to Radio 4 LW on DAB, which can be found next to Radio 4 on the list of stations.
For information on the symptoms of interference see our, We cannot recommend individual Installers. The best place for an aerial is at a height of ten metres, mounted outside without anything between the aerial and the transmitter. This normally happens in the summer months, due to high pressure weather conditions in the atmosphere, allowing radio signals to travel further. If you have bought a new car, the DAB radio may be tuned to DAB stations in a different location. CBeebies 205.
There are also some handy re-tune videos on the Freeview website. Our DAB installation guide provides further information. It can be built-in, indoor or external and vary with platform.
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