@Joseph Haig
Too late!
http://www.pressandjournal.co.uk/Article.aspx/1198286
2 publicly visible posts • joined 7 May 2009
Actually it doesn't show that hardly anyone in the Highlands is using wireless. If you look at Figure 1, "Track taken by survey vehicles across the UK" in the PDF you'll notice that readings are constant over the routes travelled. None of the islands were visited - that doesn't mean that there's no wireless there, just that they weren't measured.