Hi I take it you're new? If so welcome, there is a lot of good information here, just some times hard to find,
There is a north Dakota forum with people in the area how ever Google and airnav.com can be your freind,
As well as the search in this site, for the list I have before a freind moved,
46.000 mhz fm old ?
46.100 mhz fm old ?
49.800 mhz fm ops
150.500 mhz am ?
134.100 mhz am ops
340.100 mhz am ops
Hope those help