4G switch disrupts North West Freeview TV viewers
Thousands of Freeview users in the North West have been hit by a temporary loss of TV reception as airwaves are cleared for fast mobile broadband.
The disruption is due to changes at transmitters serving parts of Greater Manchester, Liverpool, Lancashire, Cheshire and North Staffordshire.
Frequencies are being freed in preparation for 4G mobile services.
Engineers say the loss of reception is expected to last until late afternoon for many homes.
Work at the main Winter Hill and Saddleworth transmitters was completed as scheduled earlier.
Jon Steel, from Digital UK, said: "Overnight some technical work has been done to the Freeview service, so some people may find that some BBC channels are missing.
"Don't panic, you need to retune your box using your remote control."
He added: "Some airwaves are being freed up for the next generation of faster mobile phone signals, to give you better broadband services on your mobile phone".