A qualified aerial installer with local knowledge will be able to advise further. Your aerial should be as high as possible pointing towards the transmitter with the best signal. Use the BBC’s Transmitter Checker tool to determine the best transmitter for your location. Ensure there is nothing in front of the aerial that could block the signal, such as trees. All TV reception predictions assume an outside aerial at a height of 10m from the ground.
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. 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. Even if you are predicted to have good reception, you may have problems receiving services using indoor or loft aerials. A television signal will always lose some of its strength as it passes along the cable and through the connectors. Therefore it is important to minimise the loss by using good quality cable and connectors. These are not recommended unless absolutely required as they can introduce unexpected reception problems. See our help guide on the different types of amplifiers available . Depending on the transmitter you are using, your aerial elements will need to be mounted flat (horizontal) or on its side (vertical). A qualified aerial installer with local knowledge will be able to advise further.
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. Troubleshooting your Freeview Television reception. It is important to check that your installation is intact. For example all the cables between your television equipment and aerial are connected securely and none is damaged. Further information is available in our Freeview installation guide. Check our Works and Warnings section to see whether there are any known problems. Using our transmitter tool , check the transmitter is not undergoing any work. Television signals can be affected by fine weather including high pressure (atmospherics) and the only solution is to wait for the weather to change, you should not retune during this time. During wet weather, when covered in moisture, all trees can have an appreciable effect on signals. As trees sway in windy weather the screening effect varies, leading to fluctuations in the quality of reception. Unplug your receiver from the mains and leave for 10 minutes. Water can get into external cables and can cause reception problems. To rule this out see our guide on cables and water damage. A manual retune is more effective than an auto-retune as it only tunes your television to the transmitter your aerial is pointing towards. For more information on how to retune manually see our manual re-tuning page . If you are still having problems, it is possible an unwanted signal is the cause. For information on the symptoms of interference see our other site, RTIS, for further information. 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. Check your cables for any signs of damage or if water has seeped into your installation? If possible, check the external cable for any signs of damage, such as cracking and tears. Damaged cables can cause reception problems and can allow water into your installation. Find the cable that goes from your aerial or satellite dish into your television, radio or set top box and unplug it. This may be from a socket on the wall or a direct cable through the wall.
If it is a direct cable, check for any obvious signs of water or a green build-up on the connector. If it is from a wall socket check both the connector on the cable and on the wall socket for any signs of water or green build-up. A green build-up is a sign that water has at some point got into your installation. If you find water damage then it is likely that the cable will need replacing by a qualified aerial installer. 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. A signal amplifier should only be used as a last resort when the television signal is weak. Even the best amplifier will still add some noise to the television signal it is amplifying/boosting that could result in picture break up.
A good amplifier should have a filter built in that only allows the signal you want to be boosted and not any unwanted signals. Otherwise, all the unwanted signals will also be boosted, which can cause pictures to break up. Amplifiers themselves are a common source of reception problems. For example, if water were to get into a masthead type, they can start to boost the result of the fault.