ORBX provides Google Earth KMZ files that show the Outlines of the North America regions they make. I believe there is also a KMZ file for Tongass Fjords too. We cover SAK, Tongass and Pacific Fjords up to and including the Owikeno Lake area of Pacific Northwest.
Get Google Earth, install those KMZ files and you'll be able to see where RTMM plays. I believe we actually might have some maps on our "Misty's Place" page but I could be wrong,
Brad