So far i have read that they can communicate in the Swanton, Vermont sector with Quebec Provincial Police and RCMP and also in the Western part of the Country between Whatcom county border patrols in Washington State and the RCMP in British Columbia. Just be interesting to know with some of the encryption used on the different radio systems, that one could assume that for inoperability between radio systems, no encryption would be used so they could communicate easily. I may be wrong but just a guess. I would like if anyone had these International Border Communication Frequencies between agencies in Canada and United States and if they are encrypted or just plain Apco-25 or conventional or in a talkgroup, just as the one you mentioned mike in Michigan and SouthWestern Ontario.