Arqiva, the operator of the Bilsdale Mast in North Yorkshire, which was destroyed in a fire last August, is due to switch on a new 80 metre interim mast while a permanent fix is worked on.
The company says the temporary transmitter will be more robust and weather resistant, and give improved TV signals for more than 100,000 households across the region.
But around 2,500 homes from Hartlepool up to Seaham are at risk of disruption to their Freeview TV signal when the switch on happens due to the creation of a “signal shadow” where the line of sight is interrupted.
Approximately 1,250 homes from the Headland in Hartlepool, Blackhall and Seaham that rely on Freeview services are predicted to lose their TV signal.
As a solution, Arqiva is to provide engineers free of charge to help repoint aerials on homes in the known “not spots”.
It has written to households affected asking residents to call a dedicated helpline to arrange for engineers to visit.
Chief commercial officer Shuja Khan said he is confident they have sufficient time and engineers to reach everyone affected before the switch on takes place around the end of February.
He said: “We want to restore and improve services to people across the region as quickly as possible, and today we have set out more details and likely timescales through 2022, including a huge construction project to permanently replace the old Bilsdale Mast.”
If repointing is not possible, Freesat systems can be installed instead. A Project Restore vehicle offering support to customers is also due to tour affected areas later this month.
Homes which use Sky, Virgin and Freesat services will not be affected by the switchover.
Additional transmitter sites have recently been switched on in Seaham and Sunderland to boost coverage while another in Blackhall is being explored.
Arqiva has submitted plans for a permanent replacement mast at Bilsdale measuring 303 metres.
It is hoped to be operational by spring 2023.
Anyone affected by the switch over is urged to call the helpline on 0800 1214828.