How at800 can help
If you are responsible for your TV aerial, have received a postcard from us and experience new interference to your Freeview service such as loss of sound, blocky or pixelated images or loss of some or all channels, you should contact us.
We will assess whether the interference might be due to 4G at 800 MHz; for example, we will check whether a new mobile phone mast has recently been activated in your area.
What happens next?
If we believe the Freeview interference might be due to new mobile signals, and you do not have satellite or cable services, and are responsible for your own aerial, we can send you a filter to fit yourself, free of charge. Full instructions are included and we can provide further advice online and by phone.
In most instances, fitting the filter will resolve any interference from 4G at 800 MHz. If it does not resolve the interference and, if you are eligible, we may be able to arrange for an at800 engineer to visit your home.
The engineer will test whether 4G is the cause of the interference and fit an at800-approved filter to your TV system. This blocks 4G signals and enables you to continue receiving and watching Freeview as normal.
If the engineer establishes that the interference to your Freeview is not due to new mobile signals, he/she can provide advice on how to retune your TV and other causes of interference. The engineer will also fit an at800-approved filter to prevent any interference if new 4G at 800 MHz masts are activated in your area in the future.
If you require additional filters for multiple TV sets, we will provide these on request. However, if you have more than one TV receiving Freeview in your house, you may have a single aerial and a distribution amplifier or splitter that sends the signal to different locations. If so, then one filter – fitted between the TV aerial and the distribution amplifier or splitter – should resolve any interference to Freeview on all of the TVs in your home. If you are eligible, we may arrange for an at800 aerial engineer to do this for you if you don’t feel comfortable doing it yourself. It is only if you have separate aerials for each of your TVs that you may need additional filters.
If you have a rooftop aerial amplifier, a weatherproof at800-approved filter needs to be installed – we can arrange for an at800 aerial engineer to do this for you, at our expense.
Read our list of frequently asked questions [FAQs] on some of the most common concerns about 4G related Freeview interference, and what we will do to help.
We have a number of guides for viewers, property managers, local authorities and landlords, providing information about what to do if you notice new interference to Freeview.