Preparing TV viewers in London for 4G at 800 MHz

at800 has been carrying out work in advance of the rollout of new 4G services at 800 MHz, to ensure that television viewers can continue to watch Freeview as these new services are activated in their area.

This work has included testing in several parts of the country to determine the size of the potential problem and the best approach for us to take to minimise any disruption to Freeview services. Having completed these tests, we are now ready to begin our work to ensure that people in London can continue to watch Freeview as 4G services at 800 MHz are rolled out over the coming months. This does not necessarily mean 4G at 800 MHz services will be available immediately. Individual mobile operators are responsible for communicating their network rollout and activation plans.

at800 is writing to all viewers in areas where reception problems might occur if the television signal received through the aerial is poor. at800 is also initiating a broad awareness raising campaign to inform people of the potential issue and that we are here to help. Tests carried out by at800 suggest that fewer households than previously estimated are likely to see any disruption to their Freeview service. The vast majority of people who at800 writes to will almost certainly not see television interference. However, at800 wants viewers that do see disruption to Freeview when it previously provided a good service to know who to contact, whilst facilitating the speedy deployment of 4G services at 800 MHz.

If any residents see problems with their Freeview over the coming months, at800 would be grateful if you could  contact them on online at by phone on 0333 31 31 800 (national local call rate, included in landline and mobile free minutes packages) or phone 0808 13 13 800 (free from landlines).

For viewers where the potential for disruption is greater, at800 will provide a free at800 filter before the 4G at 800 MHz network is activated. This can be connected to the TV aerial cable should disruption, such as pixelation, loss of sound or channels, occur. While at800 expects the majority of people will be able to fit the filter themselves, at800 will provide additional support to the elderly or those with a disability via a home visit service.

For residents in buildings with a communal aerial system - where the antenna or aerial is not their responsibility - at800 will provide the landlord or property manager with a free communal filter on request.

Television received via cable or satellite is not expected to be affected. Only new 4G services at 800 MHz have the potential to cause problems with Freeview; existing 4G services from EE operate at 1800 MHz and do not disrupt television.