I do not know how long Tain has been a range but before it was there was an airfield there, which must have generated some noise. As ranger says, there will be those for a closure and those against. It can't be much use for night flying in the Summer due to the lack of darkness that far North.
Some locals campaigned to get Scampton closed but when it was actually proposed and plans were made another lot came out with "SOS" banners = Save Our Scampton! The public don't speak with one voice so they are probably best ignored!
Link to Tain info =
http://www.raf.mod.uk/news/ranges10.html