It was originally built by the BBC,[1] entering service in June 1965 acting as a relay transmitter for the now-defunct 405-line VHF television system.

The television broadcasts primarily covered the town of Machynlleth and the villages of the upper Dyfi river valley.

The transmitter was classed as a relay of Blaenplwyf about 30 kilometres (19 mi) to the southwest, receiving its signal by direct off-air pickup.

Colour TV eventually arrived, with the site continuing to act as an off-air relay of Blaenplwyf for the 625-line services.

Mux A started up on the newly vacated channel 57 at full post-DSO power of 4 W. All the remaining analogue TV transmitters were shut down and the three multiplexes of Freeview Lite took over their frequencies.