TheWrexham-Rhos transmitting station is adigital televisionrelay ofMoel-y-Parc, and forms part of theWales television region. Despite its name, the station is situated inMoss Village and serves the city ofWrexham, the northern area ofWrexham County Borough and south-westernFlintshire. It is a free-standing lattice tower structure serving around 85,000 homes which are unable to receive broadcasts from Moel-y-Parc due toHope Mountain.
Prior to analogue switch-off, Wrexham-Rhos broadcast four of the five national terrestrial stations. Channels 1 to 3 were broadcast at 200 WERP, while S4C was broadcast at 400 W. In 1998, due to the upcoming launch ofONdigital from neighbouring transmission site,Winter Hill, S4C from the relay was required to change frequency (from UHF Channel 67) two years later. A message was displayed telling viewers to re-tune their televisions of the channel were carried for a couple of months. When the original frequency was switched off, the power on the newer version was increased.
At present, the station broadcasts three of the six national digital terrestrial television multiplexes on the "Freeview Lite" service. The station switched over to digital transmissions from analogue throughout November 2009, and remaining analogue services ceased at midnight on 25 November 2009. BBC A and Digital 3&4 broadcast usingMPEG2 compression onDVB-T standards, whilst the HD multiplex, BBC B, usesDVB-T2.
