I'm working on that now. I'm moving out to SW Colorado next month. I'm trying to get an idea of the area radio systems,,,, realizing that the database may or may not be accurate.Unfortunately some areas dont have user submitted data which that what radio reference is.
I would use the fcc license search, and try multiple names, San juan, county of etc and go through it. A scanner in search will also probably be quicker for common used.