Currently, the hill's transmitters cater for viewers and listeners in Swansea, Neath Port Talbot and South Carmarthenshire.

BBC1 and HTV Wales came on air from Wenvoe in April 1970, but it was nearly two years later[5] before Kilvey Hill started to relay those channels.

The site radiated all five UK terrestrial analogue television services at 10 kW until digital switchover was completed on 9 September 2009.

The initial rollout of digital television in the UK involved radiating the signals at low power in between the existing analogue channels.

The remaining analogue TV services were closed down, the digital multiplexes took over their original frequencies (and a few new ones) with a power increase and a move to 64-QAM encoding.

The service covers Swansea, Neath Port Talbot, Bridgend, Carmarthenshire, Pembrokeshire, and parts of South Wales including Cowbridge and the Vale of Glamorgan where the Wenvoe Transmitters’ signals are shielded by hills.

[9] The 1988 bandplan for Band II raised the upper limit for broadcasting to 100 MHz and Radio 1 gained its own frequency.