625 lineUHF colour TV transmissions commenced on 5 November 1973. The high power output of the UHF transmitter and its location allowed its signal to be received clearly in parts of south Wales. From 1985 and before Freeview it became a popular transmitter from which to receive Channel 4 which was not broadcast on Welsh transmitters (Channel 4 launched in 1982, but wasn't available from Huntshaw Cross until the summer of 1985). Evidence of this can easily be seen in Swansea (for instance) where many Group C/D TV aerials can be seen pointing south, across the water.
The 405-line transmissions from Huntshaw Cross were discontinued in the 2nd quarter of 1983, somewhat before the final UK-wide shutdown of the VHF system in January 1985.
Digital switchover began at the site in the early hours of 1 July 2009 when the BBC Two analogue service was switched off just after 01:20 BST. Switchover was completed in the early hours of 29 July 2009 with the analogue services disappearing one by one, starting with BBC One at a few seconds after 01:30. Viewers were required to perform another retune on 30 September 2009 as SDN, Arqiva A and Arqiva B reached their final frequency positions. Final post-DSO power levels were not reached by all multiplexes on this transmitter until March 2012.
Freeview HD became available to viewers using this site from 24 September 2010.
A local DAB multiplex for North Devon began transmitting on 2 February 2012 ahead of full launch on 6 February 2012, the local DAB service is an exact mirror of the DAB service for Exeter and Torbay.
Digital Switchover started at Huntshaw Cross. The analogue BBC 2 service on channel 62 was switched off, along with the BBC Mux 1 service on channel 54- and the new "BBC A" multiplex started up on the newly vacated channel 62 at full post-DSO power.
All the remaining analogue TV channels were shut down and the new post-DSO digital multiplexes for the PSB channels started up at full power. Huntshaw Cross was subject to a complex multi-stage switchover, and the COM multiplexes (Mux A, Mux C and Mux D) were not switched from their pre-DSO configurations immediately.
With the post-DSO retune event at Mendip, the post-DSO COM multiplexes replaced the pre-DSO COM multiplexes on their final channel allocations, though only the SDN multiplex gained full power at this point.
Yet another retune will be needed in May 2013 as part of the Europe-wide tactic of clearing Band V above 800 MHz so as to make space for future 4G mobile phone services. The BBC A multiplex will be reassigned to channel 50.