An email reply from a friend who worked in
Navigation Industry.
The following issue relates also to the use of GMRS in Canada, but I contacted Angela Choi at Industry Canada to get the current details on using a US 5watt model of the Garmin Rhino 530HCx in Canada. She is to get back to me. The bottom line is I guess you could get a US model and obtain a FCC license for it's use in the States. That would probably be the best scenario and then you have a 5watt unit for when you take trips into Washington state.