The site was originally built by the BBC,[1] entering service in early 1964 transmitting the now-defunct 405-line VHF television system.

When UHF 625-line colour TV came to north Wales in the 1970s, the locality fell into the service area of the main transmitter at Llanddona or the relay at Arfon and so this site was not needed as a repeater.

BBC 405-line television started up with the site acting as an off-air relay transmitter of Llanddona about 35 km to the east.

BBC research report 1963-50[2] shows that the town of Holyhead fell just outside the service area of the Llanddona main transmitter and points out that co-channel interference (presumably from Divis in Northern Ireland, about 170 km to the northwest across the Irish Sea) was "severe".

405-line television was shut down at Llanddona in 1984 and Holyhead's Band I transmitter therefore ended its service after 20 years.