The Ferryside relay is fed with the off-air signal from Preseli about 17 miles (28 km) to the northwest.

This mimicked what would actually start to happen later in the decade as the analogue TV signals were progressively turned off in favour of DVB across the country as whole.

BBC Two Wales analogue was finally switched off as part of the full digital switchover in the Preseli region which happened four years later between 19 August and 16 September 2009.

The Ferryside "digital switchover" trial commenced with four of the pre-DSO multiplexes from Presely being re-radiated in the gaps between the existing analogue TV channels.

It appears that the decision to allocate BBC Mux B to channel 27 was a late change, forcing a variation of licence to be agreed with OFCOM.