Digital terrestrial television was first transmitted from the Midhurst mast from 15 November 1998 using the frequency gaps between the analogue TV broadcasts. To limit interference to the analogue transmissions, power output on the digital multiplexes was low.
On 29 February 2012, Midhurst started DSO with analogue BBC2 ceasing transmission on UHF 55 and Mux 1 closed on UHF 56.3 The new BBC A multiplex started on UHF 55 from the start.
Following the completion of analogue TV shutdown on 14 March 2012,4 Midhurst frequency allocation was.
Due to the clearance of the 800 MHz band, Digital 3&4 was moved from UHF 61 to UHF 56 and SDN from UHF 62 to UHF 54.5
Due to the clearance of the 700 MHz band,6 SDN was moved from UHF 54 to UHF 29, this allowed Digital 3&4 to move from UHF 56 to UHF 54 (this was a "Transitional" frequency for 700MHZ clearance purposes), BBC A from UHF 55 to UHF 48 and Arqiva B from UHF 50 to UHF 33.
Midhurst completed 700 MHz clearance on 16 October 2019 when the following frequencies came into use.7
"Flash Earth". Retrieved 22 February 2012. http://www.flashearth.com/?lat=51.017092&lon=-0.701204&z=17.5&r=0&src=msa ↩
"BBC - TV Transmitters". Retrieved 22 February 2012. https://www.bbc.co.uk/reception/transmitters/tv/tv_midhurst.shtml ↩
"Digital UK - Midhurst". Archived from the original on 10 May 2012. Retrieved 22 February 2012. https://web.archive.org/web/20120510111741/http://www.digitaluk.co.uk/when_do_i_switch/meridian/midhurst ↩
"West Sussex's Midhurst transmitter gets ready for final stage of the Digital Switchover". a516digital. Retrieved 26 November 2019. https://www.a516digital.com/2012/03/west-sussexs-midhurst-transmitter-gets.html ↩
"West Sussex: Countdown to the first 4G clearance retune". a516digital. Retrieved 26 November 2019. https://www.a516digital.com/2012/09/west-sussex-countdown-to-first-4g.html ↩
"Freeview changes - Southern England - 21st March 2018". a516digital. Retrieved 26 November 2019. https://www.a516digital.com/2018/03/freeview-changes-southern-england-21st.html ↩
"Freeview signal changes reach SE England". rxtvlog. Retrieved 26 November 2019.[dead link] https://www.rxtvlog.com/2019/10/freeview-signal-changes-reach-se-england.html ↩