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The Moel y Parc transmitter and its 20 relays serving north east Wales made the switch in two stages:
At Stage 1 (DSO1) - 28 Otober 2009
BBC Two analogue ceased broadcasting permanently and the first BBC multiplex, Mux BBC A, launched at 8k and 64QAM.
At Stage 2 (DSO2) - 25 November 2009
All other analogue services ceased broadcasting permanently and high powered digital multiplexes launched at 8k and 64QAM.
For futher information on 8k and 64QAM transmission modes please click here.
On 2nd December 2009 at Moel y Parc, SDN, ARQ A and ARQ B will adopt their final frequency positions post DSO. In addition ARQ B increases to reach its final post DSO power levels (H9).
Whilst the actual date is yet to be defined, in 2011 SDN and ARQ A will increase to their final post DSO power levels (M1).
| Bala | Betws yn Rhos | Cefn Mawr |
| Cerrig y Drudion | Corwen | Cyffylliog |
| Glyn Ceiriog | Glyndyfrdwy | Llanarmon yn Ial |
| Llandderfel | Llanddulas | Llangernyw |
| Llangollen | Llanuwchllyn | Moel y Parc |
| Pen y Banc | Penmaen Rhos | Pontfadog |
| Pwll Glas | Storeton Wales | Wrexham Rhos |
Published by Ofcom, these documents contain details of transmission characteristics (channel allocations, ERPs, aerial groups and offsets) which will be adopted post digital switchover. This information is subject to change and therefore should be checked regularly.
To view the Ofcom Digital Swithover transmitter details for this and other regions please visit the Ofcom website.
Published by Ofcom, these maps detail transmitter locations and DSO transmitter groupings. This information can change and therefore should be checked regularly.
To view the Ofcom transmitter location map for this and other regions please visit the Ofcom website.
Ofcom have confirmed that there are 2 analogue self helps, in the Moel y Parc transmitter group, their status is as follows:
For further information about self helps please visit the Ofcom website.
Storeton (Wales) is a new relay which launched at DSO1, providing Welsh services into Deeside for those who previously had to watch Winter Hill. Storeton (Wales) is in line with Winter Hill so viewers can recieve 9 muxes using their existing aerial pointed at Winter Hill.
As a result, households in this area will recieve 3 PSB Granada muxes (from Winter Hill), 3 PSB Welsh muxes (from Storeton Wales) and the 3 COM muxes (from Winter Hill).
At Moel y Parc, all PSB multiplexes moved into the analogue aerial group B. At the later technical event, the commercial multiplexes also move into the analogue aerial group.
At Cefn Mawr, all multiplexes will be outside the analogue aerial group B. Replacement group C/D antennas may be required to ensure reliable reception.
At all relay sites, all multiplexes will be within the analogue aerial group from switchover.
Channel changes at Cefn Mawr, LLangollen and Wrexham-Rhos mean that channelised aerial systems will need to be reconfigured at DSO1 and DSO2.
Channel changes at Moel y Parc mean that channelised aerial systems will need to be reconfigured at the later technical event on 2nd December 2009.
Households with supplementary antennas directed at Bagillt, Fflint or Holywell analogue2- channel relays can remove them from DSO2 as these transmitters are replaced by Storeton (Wales) and have now closed.
A household in north east Wales is most likely to be watching the Moel y Parc transmitter group. However, they could also be watching the Winter Hill, Long Mountain, Llanddona, Sutton Coldfield or The Wrekin transmitter groups.
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