Originally Posted by swb1964:
“I think it would be a case of adding Radio Wales to existing transmitters rather than wholely new transmitters so only one frequency required.
And not so long ago BBC Radio Scotland added new transmitters on the A9 with just Radio Scotland and nothing else on them so again only one frequency needed.”
They were very much an exception, and were commissioned primarily for safety reasons to serve motorists on the A9 during severe weather.
As far as general extensions to coverage it's almost certainly going to be DAB from now onwards, opening new FM transmitters would now send the wrong 'political' message