Gps

[High Wing Drifter]

There is a backup for GPS, but I fear the US would get a little antsy. I understand that GLONASS is not yet permitted for civil use, but are there any receivers on the market that use it?

http://www.glonass-center.ru/frame_e.html

http://www.geog.ubc.ca/courses/geog4...ussian_gps.pdf