Much of the North Wales coast is covered by Moel Y-Parc or Llandonna bar a few coastal spots in the East who are too low down and receive Winter Hill.

The North-South hills that make up the Vale of Conwy block Llandonna to the West and Moel-Y-Parc to the East, not to mention the Penmaen Rhos relay which covers Colwyn Bay itself.

Much of the valley is covered by the large Conwy relay which can easily be seen in front of you as you head out of Colwyn on the A55 heading towards Bangor.

One transmitter you probably won't spot (on the hill to the east of the Dual carrageway) is the 2W Mochdre transmitter, a small group A infill rebroadcasting Conwy's own relay which appears to serve a thin stip of valley to the North West by the side Bryn Euryn Fort. For the houses here coverage of Conwy is impossible because of the hillside below Bryn Pydew (to the left on the final picture).

A look at the frequencies shows reception of Penmaen Rhos must be impossible due to the placing of adjacent frequencies - Ch4 on ch32H from Penmaen and BBC1 on ch33V from Mochdre. This is due to the hillside Mochdre itself sits on, rising steeply up at the back of Colwyn Bay.