The station provides broadcast services to Berkshire, north Hampshire and parts of Surrey and Wiltshire, and includes a 131.4-metre (431 ft) guyed steel lattice mast.

The transmitter has 8 local relays: Alton, Aldbourne, Chisbury, Hemdean, Hurstbourne Tarrant, Lambourn, The Bournes and Tidworth.

[1] On Saturday 26 November 1977 at around 5:10 pm, the Southern ITV broadcast from this transmitter had its UHF sound transmission hi-jacked by unknown agents.

The UHF audio signal from Rowridge was swamped by a signal presumably from a location much closer to the Hannington transmitter, overriding the sound of the local ITV station Southern Television and broadcast their own audio message purporting to be from Vrillon, an alien from an institution calling itself the Ashtar Galactic Command.

On 17 July 1994 vandals sabotaged the mast's power supply during the 1994 FIFA World Cup Final, meaning that hundreds of thousands of viewers missed about an hour of the match.