Thousands of Freeview homes across south Wales have to retune today when the Wenvoe and Kilvey Hill transmitter relays shift frequencies to avoid 4G mobile broadband interference.
No-one should need a new Freeview aerial, and all Freeview HD products should automatically retune, along with most post-2010 Freeview TVs and boxes.
The retunes are part of the 4G Freeview Fail, where UHF channels 61 and 62 in the 800MHz range must be cleared to make way for new mobile broadband services.
Read more about the 4G Freeview FailHomes using the Wenvoe and Kilvey main transmitters won’t need to retune, but the changes will affect many of their relay transmitters, used to reach the valleys of south Wales.
Some homes may also experience a brief loss of signal as engineers adjust the relay, but it won’t be re-tuned – on-screen messages will have explained who is affected.
The changes also affect BT Vision, TopUp TV and YouView products, but have no effect on Sky, Freesat and Virgin Media signals.
The Wenvoe relays which will retune are:
Abercynon, Abergavenny, Blaina, Brecon, Dowlais, Ebbw Vale, Fernhill, Gellifendigaid, Llangeinor, Llanhilleth, Machen Upper, Monmouth, Mynydd Bach, Pennar, Porth, Risca, South Maesteg, South Tredegar, Taffs Well, Ton Pentre, Tonypandy, Tonyrefail, Trefechan , Tynewydd, Van Terrace, and Ynysowen.
The Kilvey Hill retunes will affect these relays:
Alltwen, Briton Ferry, Burry Port, Cilfrew, Craig Cefn Parc, Efail Fach, and Mynydd Emroch.
Some relays will not be re-tuned, but will be switched off during the day for engineers to make
In the Wenvoe group, these are:
Abertridwr, Blaenau Gwent, Blaenavon, Clydach, Clyro, Crickhowell, Crucorney, Crumlin, Cwmfelinfach, Cwm Ffrwd Oer, Ebbw Vale South, Ferndale, Llanfach, Llanfoist, Llyswen, Nantyglo, Nant y Moel, Ogmore Vale, Pennorth, Penrhiwceiber, Rhondda Fach, Rhymney, Sennybridge, Trebanog, Trecastle, and Wattsville.
In the Kilvey Hill family, only the Pontardawe relay will be temporarily switched off today.
On March 27, the Mendip transmitter and its 30 relays will retune, as will the Bampton and Culm Valley relays for the Stockland Hill transmitter.
The rest of 2013 will be full of retunes around the UK, and we’ve got a list of upcoming 4G Freeview retunes.