The impact is variable and can happen for a few minutes or possible for a small number of days. Transmitter Freeview problem reports; Ardintoul: Freeview: Wrong regional programme due to a fault from 18 Dec 11:59 until 18 Dec 12:36. Reception is fine and in hilly areas it happily switches from DAB to FM without causing me a problem However, it does give me grief when I want to hear traffic reports – … Engine affecting your own car radio - A distinct buzzing ‘whine’ which rises and falls with engine speed. Radio and Television Investigation Service (RTIS), help guide on the different types of amplifiers available, Radio and Television Investigation Service (RTIS), Leeds, Wakefield, Huddersfield and Bradford. 3/13/2017. It is often a process of elimination to find the cause. However, in both cases the signal will be weakened as it has to pass through various obstructions such as walls, roof tiles, foil backed insulation etc. If you receive this additional signal it can potentially cause picture break up. DAB uses multiplexes to group services together. If you find a regular pattern and it is occurring to all stations and your television, there may be a source of interference nearby or within your own home. The. Since it is a communal aerial, you will not be able to contact Ofcom directly. 5 Live sports extra is a secondary service of Radio 5 Live, and not always available on air. The CAI (Confederation of Aerial Industries) is a recognised trade body which can put you in touch with one of its members in your area. FM radio signals can be affected by fine weather including high pressure and the only solution is to wait for the weather to change, you should not re-tune during this time. We have no control over it. See how weather can affect Freeview reception. Contact the Freeview Advice Line on 0808 100 0288, or for further details please see Freeview TV Changes. If you are using an external aerial, check whether the problem affects all radios connected to that aerial at the same time. Digital Audio Broadcasting (DAB) is a digital radio standard for broadcasting digital audio radio services in many countries around the world but not in North America where HD Radio is the standard for digital radio.. Interference from a device within a home or close by can affect televisions too, so it is worth switching on the television when you notice the problem. Virginia Ford: Hi Virginia,i have also lost all DAB sussex stations they have messed up the frequencies on these DAB. This often sounds like birds tweeting and happens if there is another frequency being transmitted near the one you are listening to. To listen to DAB in your car you will need to ensure your aerial is able to receive a DAB signal. Weather impacts are rare for DAB but certain weather conditions allow the DAB signals to travel further than normal. For more information on how to retune manually see our manual re-tuning page. A faulty thermostat will normally manifest on the radio as a loud rasping sound. : Arfon: DAB: Off the air due to essential engineering from 18 Dec 10:47 until 18 Dec 11:39. DAB radio in the UK is badly broken and needs fixing. Most electrical items produce a distinctive sound. 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. It is worth checking if your neighbours are affected as you will all be using the same television aerial. This means you’ll often notice a delay when watching live programmes. External aerials are also available for FM radio and will significantly improve reception. If not, take the radio outside and see if it is worse as there may be a faulty piece of electrical equipment nearby, e.g. Our, If your installation is in good order a simple filter may help solve the problem. A green build-up is a sign that water has at some point got into your installation. This is often caused by Power Line Telecommunications (PLT) devices. By using our Transmitter Checker, you can check what MW/LW radio services are available at your location. By switching it off and seeing whether the problem goes away, you will be able to know if this is the cause. Rule out Reception problems . For hi-fi systems check your aerial isn’t broken or become loose. There are all kinds of aerials available on the market and some which are specific to certain frequencies. Some sets do this automatically. It is rare for a windfarm to cause interference to your reception. If this does not work, a full re-scan might be needed. If it is possible, try putting your FM radio into mono. This may mean an electrical item in your home or nearby, is interfering with the reception of your FM radio and is causing the buzzing, clicking or pops you can hear. AM reception can vary a great deal from day to night because of differences in the atmosphere. When we broadcast a signal, some of it disappears off into space and is lost. We have a basic installation guide you can read. The first thing to do is to swap any interconnecting leads. Many people are now using low-power LED lights instead of more traditional varieties. Use our transmitter tool to see the status of your local transmitters and also to see whether you are in a good DAB reception area. Check whether there is a pattern. The interference can come from many sources. If all other stations on the same DAB multiplex are working ok and you have just lost one station, this is not due to interference. This is why you can often hear radio stations from outside the UK at night. For example all the cables between your television equipment and aerial are connected securely and none is damaged. DAB radio problems in the car can have several causes. If you get hiss when listening to a stereo signal try switching to mono. All these need a power supply to work. See our, Radio signals can be affected by fine weather including high pressure. This may mean some viewers will lose some TV services, or need to repoint/change their aerial. Use the BBC’s Transmitter Checker tool to determine the best transmitter for your location. Once a reception problem has been ruled out, you will need to start eliminating possible electrical interference. We have a. A qualified aerial installer with local knowledge will be able to advise further. If all other stations are working ok and you have just lost one station. Does it come and go at specific times? Further information can be found on our mobile phone interference help guide. 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. Even in good areas an external aerial will guarantee optimum performance and will also ensure consistent listening quality. TVs and set-top boxes that receive Freeview may have the service blocked by these 4G mobile signals; there is a very small chance this may cause interference to your Freeview service. This may mean an electrical item in your home, or nearby, is interfering with your MW/LW radio. Normally, the signals from each transmitter can only be received by those homes that have aerials with a direct line-of-sight to the transmitter. The explanation: when you plug in a pair of headphones, the speakers will be... - Roberts Ecologic 4 DAB radio While an amplifier provides gain, boosts the signal, an attenuator provides loss, reduces the signal. Try switching your radio off and on again. Please see our help guide on a manual retune. The regulator, Ofcom, deals with Pirate Radio and you can report it. You can find other common sources of interference in our individual, If your problem is caused by interference, your landlord or property manager can contact the regulator, Ofcom, for help. When the BBC has additional sports content, it can be found next to Radio 5 live on DAB radio. 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. There are three types of amplifier – masthead, set-back and distribution. It is important to check that your installation is intact. The RTIS is a diagnostic and advisory service provided by the BBC for the benefit of all UK audience members and broadcasters. To establish whether this is the problem, check whether it happens when the heating comes on. See our, We cannot recommend individual installers. If not, then you will need to check the radio and aerial to confirm they are both working properly. DAB Just tune your Digital Radio (DAB) to LBC. To see whether there are any faults with the local transmitters use the BBC’s Transmitter Checker tool. If this does not work, a full re-scan might be needed. If you are hearing a hum it is often linked to an issue with your mains adapter. Try to move your radio away from the street or use an external aerial. is a recognised trade body which will be able to put you in touch with one of their members in your area. You may need to instruct a qualified installer to assist you with this. When the BBC has additional sports content, it can be found next to Radio 5 live on DAB radio. There is usually a pattern to it with a definite start and end time, and it normally affects all services. The fast-paced half hour features leading guests discussing the challenges that face us all. This is known as a single frequency network (SFN). At these times, there is nothing that can be done but to wait until the weather condition changes. This is known as co-channel interference. If you have a portable radio you will be able to pick up more of the receivable signal if your telescopic aerial is fully extended. Interference is usually caused by electrical devices in the home. Deleting all the presets and then re-scanning to select local ones may fix the problem. It helps you investigate whether a problem receiving domestic TV and radio services is due to interference from an external source, or is actually a reception problem. The most common PLT devices are Powerline Ethernet Adapters that are used to enable the internet to be shared around a home using the electrical mains. Check whether you are also having interference on an FM radio. The transmitter tool can only show faults with BBC services. It tends to happen mostly in the evenings - when television viewing is at a peak and specialist FM programmes are on air. Further information can be found on our help guide on receiving television through a communal aerial. Nations and Local radio services are carried on a mix of commercial multiplexes. Please be aware most local news is not currently broadcast in HD at this time so will not be available on HD channels. The two that are usually blamed are radio amateurs / CB enthusiasts and digital communications (TETRA). eceiving television through a communal aerial. 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. This will help you to see if there are, or have been recently, transmitter faults in your local area. The best digital radios today offer top sound quality and slick interfaces – and at a reasonable price point too. If so what does the problem sound like? For more helpful information please see our, Your aerial should be as high as possible pointing towards the transmitter with the best signal. We have listed some of them below but this is only a guide and not a definitive list. A heating system can cause interference if it has a fault. This is why you can often hear radio stations from outside the UK at night. Motorcycles tend to be the worst. Use our transmitter tool to check you are tuned to the best frequency for your area, as you can often pick up more than one signal. You will, however, need to have a suitable postcode of the area you are having problems in to see what the radio coverage is in that area. It often appears at the same time on consecutive days, then disappears for several months. An electric motor is used in many appliances such as electric lawnmowers, washing machines, drills and hairdryers etc. The, If you know your location, you can use our, When travelling in the car, your signal can be affected by. Enter your full postcode for details of which DAB digital radio stations you're likely to receive. If your problem is caused by interference, your landlord or property manager can contact the regulator, Ofcom, for help using the Ofcom contact web form. Please see our Freeview Installation guide for further details. If you are still having problems, it is possible an unwanted signal is the cause. Switch lights on and off one at a time, Passing traffic - A distinct buzzing 'whine' which varies with engine speed. FM Tune into 97.3 FM throughout London and the surrounding areas. If you can still receive radio stations via digital television this doesn’t mean that DAB radio is working—radio stations use a different technology to broadcast on digital television than DAB. The only solution is to wait for the weather to change, you should not re-tune during this time. The cause is an atmospheric effect known as Sporadic-E and can last from a few seconds up to an hour or more. If you can receive a service from more than one transmitter, then you get the benefit that your radio combines the signals from all the transmitters it can receive. You can use our transmitter checker to see if you are in good radio coverage. If you have a problem first check whether it is with your own equipment or the local transmitter. For example all the cables between your television equipment and aerial are connected securely and none is damaged. National commercial digital radio multiplex operator. Advice for improving medium wave reception can be found on this BBC Reception help guide. Broadcasters share the airwaves with a number of others who either have a licence from Ofcom to use certain frequencies or can use a limited number of unlicensed frequencies. To see what is available when, the BBC keeps a schedule on the, Check cables and leads within your property to ensure the problem is not a simple installation fault. If it is, contact your local council. However, if the original light used a transformer, rather than directly running off the mains, it is possible the transformer is causing the interference. DAB aerials are different from FM or TV aerials, so you need a good quality DAB-specific aerial. The first affiliate was the legendary KPPC radio in Pasadena, California. BBC News HD, BBC Four HD and CBeebies HD are broadcast using capacity on commercial multiplexes. If you have re-tuned your television, we would recommend doing a manual retune to the transmitter your aerial is pointing towards. They may be supplied by your Internet Service Provider (ISP) as part of a package. Have a look at our, The BBC cannot recommend individual Installers. Many people are now using low power LED lights instead of the more traditional varieties. About 9.45am today my DAB radio in my office lost Radio 2 and just keeps scrolling "Service not available". To rule this out see our guide on water damage to cables. For example, some masthead amplifiers are also distribution amplifiers. Windowsills and high shelves are a good position for the radio. If possible, check the external cable for any signs of damage, such as cracking and tears. This can commonly be caused by high pressure when, during fine weather, radio signals can travel much further than normal. Check cables and leads within your property to ensure the problem is not a simple installation fault. We use the RDS to ‘tell’ your radio if there is a better or stronger frequency for the radio service you are listening to, as you travel around. The first is a fault with the local FM transmitter. There is nothing than can be done the problem will go away when the weather changes. For more information see our effect of tropospheric ducting on Freeview help guide. Your television can sometimes receive signals from more than one transmitter, which may be transmitting different regional news. These are not recommended unless absolutely required as they can introduce unexpected reception problems. Ensure the telescopic/integrated aerial is fully extended. It is important to check your installation is working properly and that your radio is in the best possible location. Use our Transmitter Checker to find the best frequencies for your location. Ensure you are tuned to the correct frequency for the service you wish to listen to. Unlike the other services, all the predictions of DAB coverage are for indoor coverage. Very occasionally, the weather, usually high pressure, can result in a weakened signal. The criteria has recently been met but as yet the government have not undertaken a review of FM radio nor given any indication of when or if FM switch off will happen. That’s because they are so used to that trademark hiss and crackle of FM radio interference. This difference has the potential to cause electrical interference. Therefore at these times, you can then receive different television services that are using the same frequency. External aerials are also available for DAB and will significantly improve reception. Check your radio manual for specific instructions on doing a full re-scan. Water can get into external cables and can cause reception problems. If your DAB digital radio has the digital tick mark, or you know it has an FM mode, you could use this for reception of Classic FM. The way to turn traffic announcements on and off on varies between radios. If you have an external or loft aerial check they are functioning correctly. Note when the nearby lamps switch on and off and compare it with when you experience the problem. Please see our, To see whether there are any faults with the local transmitters use the, There are differences between a reception problem and one caused by electrical interference. is a recognised trade body which can put you in touch with one of its members in your area. urbling noises and breakup on DAB are normally reception problems due to a weak signal, but they could also be linked to some sort of interference. Typical causes of interference to a communal aerial are faulty heating thermostats or a poorly suppressed lift motor. We are only receiving broadcasts through our digital television. Switch off heating systems and see whether the problem goes away. There is nothing anyone can do about this and the only answer is to wait for the weather to change. Firstly, you may have a poor aerial system, so we recommend you checking over your installation by reading our, To turn AD on or off, press AD on your remote. Use our transmitter tool, which will tell you what national and local DAB services are available in your locality. See our guide on Hissing and Fading. Ensure there is nothing in front of the aerial that could block the signal, such as trees. An electric motor is used in many appliances such as lawnmowers, washing machines, drills and hairdryers. Try moving the radio to another position, such as near a window, higher up, or another room. See our guide on, This may mean an electrical item in your home or nearby, is interfering with the reception of your FM radio and is causing the buzzing, clicking or pops you can hear. Look for a pattern. As a rule of thumb, hissing, distorted 'S' or 'Z' sounds, whistling and twittering are not interference but are caused by general reception problems. DAB reception problems can be caused by many things. See our guide on, The effect that causes radio signals to travel further than normal is known as tropospheric ducting. An exception is "helically wound" FM aerials. Check our works and warning page to see if there any current weather problems. It is important to check your installation is working properly and that your radio is in the best possible position. If you rule out basic reception problems and believe there is a nearby source of interference you can contact us either by phone or. Use the list of symptoms below as a guide to help you identify a possible interference source: This effect happens in bursts of a few seconds at a time and is due to central heating thermostats. 5 Live sports extra is a secondary service of Radio 5 Live, and not always available on air. We have a, FM radio signals can be affected by fine weather including high pressure and the only solution is to wait for the weather to change, you should, In some urban areas Pirate Radio can be a problem. There is nothing that can be done and the problem will go away when the weather changes. This could be unwanted signals and result in picture loss on your own television and, maybe, those living nearby. For more information see our guide on. The CAI (Confederation of Aerial Industries) is a recognised trade body which will can put you in touch with one of their members in your area. Find out more about DAB digital radio and check if you can receive the national commercial stations. It is a process of elimination so it is important that you switch off everything in your home first to see whether the problem goes away. This is because the power used is lower, and is forced to work outside of its normal operating parameters, resulting in electrical impulse interference. Make sure any cables between your radio equipment and aerial are connected securely. The aerial and cables need to be well maintained and you need a radio with the option to connect an external aerial. If the hissing or fading is more obvious when it is raining, the rainwater might be getting into the external aerial down-lead. Further information and guidance can be found by visiting the Get Digital site. If one of these stations can be received with a good signal but soon goes ‘off air’ there could be a problem with the radio. Read about our approach to external linking. The BBC's local and national radio services are carried on local commercial DAB Multiplexes. However, it is important to first rule out a reception problem and any electrical devices in your home before assuming the windfarm is to blame. Equipment, such as baby alarms, are designed to work within an allocated frequency band and when used correctly they will not cause problems to television or radio reception. It will also show you any transmitter faults. Check you car manual for yours. An indoor aerial may be good enough, but for the best reception use an outdoor one. Use the, These are not recommended unless absolutely required as they can introduce unexpected reception problems. Try switching your radio on and off. Potentially, as the blade moves this can reflect the signal and cause intermittent loss of service, pixilation or freezing of the picture. 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. There are differences between a reception problem and one caused by electrical interference. For further information see our, Water can get into external cables and can cause reception problems. For reception type symptoms use the step by step guide to help troubleshoot problems with DAB radio or use the Problem Assistant. If you are using a portable radio, it may be necessary to move this to a different position in the room. If you have a relatively new car, the radio may have been tuned to DAB stations in a different location. Breakthrough can manifest as flashing, jumping, break-up and freezing of TV pictures and ‘voices’ or rhythmic thumps and pops over the radio. As DAB Italia works with private radio service providers, they are limited to a certain annual budget. Tim Johns, a producer on Radio 2, tweeted: “Oh dear - there's a current problem with BBC DAB reception in central London. If it is a direct cable, check for any obvious signs of water or a green build-up on the connector. Electric motor - A distinct rough crackly 'whine'. If you still have a problem use the ‘autotune' function to re-tune. The simplest test is to turn off your engine and see whether it goes away. Many people are now using low-power LED lights instead of more traditional varieties. Poorly screened leads can be an ‘entry point’, allowing unwanted radio waves into your television or radio system. However, DAB radio works in a completely different way to FM. This can be requested by contacting At800. When the problem occurs check channels from all multiplexes. More information can be found in our pirate radio help guide. It may take a little trial and error to find the most suitable one for your installation, and it is worth taking the advice of a local aerial contractor to select the correct one for the installation. Our information on how clear skies and fine weather can affect your radio reception may be useful, please see our Weather Guide. Try our Problem Assistant to help you rule out any common problems or follow the advice below. It can be found next to Radio 4 on the list of stations. For more information on how to retune manually see our, If you are still having problems, it is possible an unwanted signal is the cause. This means your radio is able to receive more radio channels either using the same frequency as the service you are listening to or adjacent to that frequency. A pirate radio station is unlicenced and may use frequencies that are close to licenced radio services, for example Radio 2 or Classic FM. Our sister site, the Radio and Television Investigation Service (RTIS) also has useful information on how to distinguish the difference. We would suggest talking with a qualified mechanic if you experience interference from any item within your car. If you have several appliances with electric motors you may need to turn them all off and try the above one at a time. To ensure you are receiving the correct regional news programmes from the transmitter your aerial is pointing towards, you will need to do a manual retune. Try to avoid putting it next to a radiator or any electronic equipment, for example, a computer, microwave, boiler or mobile phone. For more information see the. There is a very small chance that 4G signals will affect your television reception as they use frequencies that are close to those used by Freeview television. The problem could be due to a number of reasons, the station may have stopped broadcasting or have moved multiplexes rather than a radio fault. See our guide on DAB radio in cars. The only solution is to wait for the weather to change, you should not re-tune during this time. In either case, you will need to ask your landlord or management committee to solve the problem. As the aerial is directional, by simply turning the radio you will be able to get the best reception. Further information can be found on our ways of tracing interference to radio reception help guide. For more information see our guide on tropospheric ducting. For more information see our interference caused by lighting. It is important to check the cables and the aerial for damage and that they are operating correctly. Your radio must be in a good DAB coverage area to receive BBC services. Listeners to 774kHz medium wave will need to re-tune to continue hearing the full BBC Radio Leeds schedule: To find the best FM frequency for your area, try our problem assistant. Have a look at our Transmitter Checker to see what BBC services you can receive where you are. AM reception can vary a great deal from day to night because of differences in the atmosphere. If the transmitter is on reduced power or undergoing any transmitter maintenance work, this can cause hissing or fading. Page 1 Stream 83i Trouble shooting Guide Important Note: For any unusual problem Factory reset your radio as explained on page85 For Mac users, to make life easier, to listen to itunes on your radio, download ‘Eyeconnect¶ # # # # Symptoms Cause/cure ( 1a. It can also cause a crackling noise which is worse on MW and LW than FM. Please be aware most local news is not currently broadcast in HD at this time so will not be available on HD channels. If you are having continuous reception problems check your car aerial for damage. You may get good, clear reception during the day, but after sunset the signal may fade or become distorted. A technician uses the audio and picture to sync them with what’s happening on screen. This can increasingly happen if your batteries are beginning to fail. Some hi-fi’s have external AM aerials that tend to look like many wires wound around a plastic loop. Coverage improved with new transmitters What is Sound Digital? This is causing the buzzing, clicking or pops sounds you can hear. However, as there are a limited number of frequencies to broadcast television services, we need to re-use them numerous times across the UK. Thank you for replying.The Power supply came with the radio.It is a Roberts 7.5v 0.8A switched mode,and is supplying the correct voltage. If using an external or loft aerial, the problem could be due to corrosion, or the cable may be damaged or loose. If you rule out basic reception problems and believe there is a nearby source of interference, you can contact us either by phone or, We cannot investigate everything so it’s best to, Once a reception problem has been ruled out, you will need to start eliminating possible electrical interference. . To check, remove the power from the amplifier and see whether the problem goes away. Often, car radio interference originates in the ignition system or the charging circuit. Some years are worse than others, depending on the prevailing weather patterns. This is because the transformer would have been designed to operate at the higher power and not the lower power the LED lights use. If you can’t locate the problem you may wish to speak to neighbours to ask them to do the same as the problem could be located in their home. Is it happening every day? Its technical name is multipath distortion. For example, the leads from your aerial wall plate to your television or leads to external speakers. If you can hear breakthrough on your equipment you may be able to fit a filter to help with the breakthrough. The effect that causes radio signals to travel further than normal is known as tropospheric ducting. To rule out any reception problems within your property see the. If you’ve suddenly lost access to digital radio stations there could be a problem with your local transmitter. The 800 MHz frequencies used by some 4G services are next to the frequencies used for Freeview. Lost reception of one or more station within a multiplex. It is important to find the cause of the interference as there are a number of filters available to you. Use our Transmitter Checker to check the transmitter is not undergoing any work and to see which FM radio services you can receive from your location. What is the Radio and Television Investigation Service? If reception improves a better quality or external aerial may help. This may be from a socket on the wall or a direct cable through the wall. Radio signals can be affected by fine weather including high pressure. We cannot recommend individual Installers. If you have an external aerial, a radio signal will always lose some of its strength as it passes along the cable and through the connectors. Firstly tune into one of the radio bands between radio stations to see if you hear any unusual sounds. Keeping a note of when each lamp comes on and goes off will help to identify whether this is the cause of your interference. Using our Transmitter Checker, check your transmitter is not undergoing any work. Radio 4 LW normally broadcasts Yesterday in Parliament, The Daily Service and the Shipping Forecast each day. This may mean some viewers will lose some TV services, or need to repoint/change their aerial. If you get interference when, for example, using the indicators or heater, then you may need to replace them. If the problem continues you may need to repair or replace the appliance. A faulty motor can cause electrical interference. Therefore it is important to minimise the loss by using good quality cable and connectors. If there is a problem with one of the transmitters you can receive, you may start to hear burbling noises or break up as there may now not be enough signals for good reception. If you live in a basement flat, or your building is steel-framed or reinforced concrete, coverage may be affected. These split the TV signal from a single aerial and allow the signal to be sent to several different televisions in the building. If the interference changes with engine speed it is most probably the ignition system causing the issue. This may be fine during the day, but in the evening, signals from distant transmitters can travel further, and can cause reception problems for those at the very edge of coverage. Switching off the heating system while you are experiencing the problem will help to identify it. An externally mounted aerial can be attached to many types of DAB portable radio and hi-fi systems. more information, please visit our page on, This may be due to two reasons. When Radio 5 Live Sports Extra is on air, you should find it right next to 5 Live on the list of stations on your digital radio. This is likely to happen if you live close to a transmitter. The signal should return once you move away from these features. This usually happens in warm fine weather, where atmospheric conditions cause television signals to travel much greater distances than they normally would. How to re-tune your DAB digital radio to listen to talkSPORT and talkSPORT 2 The easiest way to get the live sport you want on DAB digital radio. Most FM car radios have a Radio Data System (RDS) built in. We cannot investigate everything so it’s best to check the scope of our service first. The radio technology known as Digital Audio Broadcasting (DAB and DAB+), and its TV sibling, Digital Multimedia Broadcasting (DMB), is being operated in several regions worldwide, either in the form of full services, or as feasibility studies.. As of 2017, 420 million people are able to receive DAB services, with over 2,100 DAB services on air in 38 countries. When the problem happens, does it affect all stations? The buzzing and clicking lasts from a few seconds to a minute at a time. A faulty or uncompressed engine can cause a distinct buzzing 'whine' which varies with engine speed - motorcycles tend to be the worst. It is important to check your own system to ensure your cables and connectors are in good condition. To improve on this figure, broadcasters would need to increase the number of transmitters drastically and build a much denser network. To get the best reception extend the aerial fully and move the aerial and radio around until you get the best reception. The BBC cannot recommend individual Installers. The best place to put a DAB aerial is on the roof of the car and as far from the engine as possible, to avoid any interference. Each DAB multiplex is broadcast using a specific frequency and the transmitters used by that specific DAB multiplex all use the same frequency. Use our transmitter tool to see whether your local transmitter is currently affected by maintenance work. . See our. To prevent interference it may be necessary to fit a 4G filter. An aerial contractor should be able to recommend the best one for your problem. During wet weather, when covered in moisture, all trees can have an appreciable effect on signals. Try to move your radio away from the street or use an external aerial. DAB uses different frequencies from FM radio. If neighbours are having the same problem it may be that the aerial itself is at fault, or there may be an interfering signal. Same for Radio 1-6 and also the WS. To ensure you are receiving the correct regional news programmes from the transmitter your aerial is pointing towards, you will need to do a manual retune. It can be readily identified because it only occurs when an appliance is used. Instead, they assume that something is wrong with the device itself. For more information see our guide on how weather can affect radio reception. It is often a process of elimination to find the cause. See our guide on Buzzing and Clicking. Nevertheless, when averaged over several years, the majority of viewers and FM listeners should be free from this sort of interference for at least 99% of the time, providing they live within the service area of their transmitter and are using a good directional aerial. To find out if a particular switch is causing the problem, try turning the lights off one at a time. If you have a lot of appliances with electric motors you may need to turn them all off and try the above one at a time. It might be worth borrowing another DAB digital radio to see if the same issue occurs. This can happen when your radio receives more than one signal. For a programme broadcast live, (like the News), subtitles will be generated as it is broadcast, which is a complex and problematic process. Audio Description is a live verbal commentary, providing information which describes the key visual information contained on the screen, which a blind or partially sighted viewer may otherwise miss. Attenuators can be used to decrease the incoming signal if it is too strong without distorting it. Following a decision by the Government, some channels used by Freeview, are being reallocated to allow for the future development of new mobile broadband services. As a rule of thumb burbling noises and breakup on DAB are normally reception problems due to a weak signal, but they could also be linked to some sort of interference. For more information see our guide on tropospheric ducting. Look out for lamps which are dull or flickering as this is normally a sign they are faulty. It is sometimes possible to hear distorted speech through your TV loudspeaker or radio. Switching lights on and off can help to identify the source. As a rule of thumb b urbling noises and breakup on DAB are normally reception problems due to a weak signal, but they could also be linked to some sort of interference. You can determine how good your coverage is by using the BBC’s online transmitter tool. The transmitter tool can only show faults with BBC services. Please see our help guide on a manual retune. If you have an extendable aerial make sure it is fully extended to give the best possible reception. Make sure you are tuned to the best frequency for your area, as you can often pick up more than one signal. The first step in is to determine whether it's a reception or interference problem. A radio which can tune to medium and long wave services usually has an aerial built in, which you cannot see. As a result this can. 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. Check whether there are any known works or warnings that might be causing the problem. To rule out any reception problems within your property see the BBC Reception Advice site to check for any installation faults. BBC Radio Leeds will broadcast as normal on FM, digital radio, Freeview and online. For example you receive one signal directly from the transmitter and another is being reflected off a nearby hill. Indoor portables are especially susceptible. If using a hi-fi with a wire aerial, again extend as much as possible to get the best signal. The problem could be due to a number of reasons, the station may have stopped broadcasting or have moved multiplexes rather than a radio fault. Broken aerials may affect reception. For more information, please visit our page on how weather can affect your Television and Radio reception. 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. Otherwise, all the unwanted signals will also be boosted, which can cause pictures to break up. The problem is that we've just bought my grandparents a DAB/FM radio for christmas. Radio reception can drop out when on the move due to changes in topography. If all other stations on the same DAB multiplex are working ok and you have just lost one station, this is not due to interference. Weather-related problems tend to happen mainly in the summer, when high pressure can cause a radio signal to travel further than it would normally. Further information on tuning your DAB radio can be found by visiting the, It is important to check the cables and the aerial for damage and that they are operating correctly. A portable battery powered FM/AM radio is a great tool to use to track down interference. To rule this out see our guide on cables and water damage. The big wigs are working on it.” The first step in troubleshooting your problem is to rule out common problems and decide whether it's a reception or interference problem. to help you rule out any common problems or follow the advice below. Portable radios should be tuned in a location in your home where the best possible signal is received. If you live close to a transmitter or can get a strong TV signal, then it could be possible to use an aerial in your loft or an indoor portable aerial. This effect happens in bursts of a few seconds at a time when an appliance is switched on. Find the cable that goes from your aerial or satellite dish into your television, radio or set top box and unplug it. For information on the symptoms of interference see our, We cannot recommend individual Installers. Retuning and Checking. If you are still having problems see our sister site Radio and Television Investigation Service (RTIS) for further information. Very occasionally, under certain weather conditions, this signal can instead be received much further than it would normally be. These signals can be both UK and foreign stations. The commercial capacity has certain constraints, which mean these HD services can only reach about 70% of UK homes. This is more likely to occur following a retune of your television. When travelling in the car, your signal can be affected by natural features of the land, for example, hills, valleys, rivers, etc. This often sounds like birds tweeting and happens if there is another frequency being transmitted near the one you are listening to. A faulty or uncompressed engine can cause a distinct buzzing 'whine' which varies with engine speed. Amplifiers themselves are a common source of reception problems. If your radio reception is poor then you could consider an external aerial for best reception quality. If this distant radio signal is on the same frequency as the one you are listening to it can cause a reception problem. If you have bought a new car, the DAB radio may be tuned to DAB stations in a different location. However, it can be linked to any electrical accessory in the car so you may need to undertake a number of checks to find the source. (plug in a known good pair of headphones and try) If the answer is yes, try plugging in and unplugging the headphones briskly, a few times. It has also been known for the engine management system (EMS) to cause problems. Northern Ireland Resident? If you are still having problems, it is possible an unwanted signal is the cause. 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