Transmitter change to affect Freeview tuning
Freeview television viewers in north Devon have been told to retune set-top boxes or receivers to ensure they receive BBC, ITV and Channel 4 channels because of transmission changes.
The Huntshaw Cross transmitter and relay stations are having broadcast frequencies adjusted as part of work to increase 4G mobile phone coverage.
Work would begin in the early hours of Wednesday, engineers said.
More than 66,000 homes would be affected, they added.
About 36,000 households around Huntshaw Cross and a further 30,000 in the Barnstaple, Ilfracombe and Westward Ho! areas, which get their signals through transmitter relays, would need to carry out the retune, engineers said.
The work is due to be completed by late Wednesday afternoon.