The Llanwrtyd Wells television relay station is sited on high ground by the hamlet of Cefn Gorwydd to the east of the village of Llanwrtyd Wells in Powys, mid Wales.

It was originally built in the 1980s as a fill-in relay for UHF analogue television covering the communities of Llanwrtyd Wells, Cefn Gorwydd and the surrounding area.

The transmissions are beamed broadly northwest and northeast to cover its targets.

After the switchover process, analogue channels had ceased broadcasting permanently and the Freeview digital TV services were radiated at an ERP of 2 W each.

Channel 24 was replaced by the new digital BBC A mux which started up in 64-QAM and at full power (i.e. 2 W).