Thanks Boyd! Got it to work. But had to find a windows machine. Unfortunately, the author of IMGFromGPX hasn't updated the Mac version to work with the new security requirements of a modern OS-X Mac operating system. OK, but after getting my hands on a windows laptop, your instructions were dead on. Thank you very very much !
I'd like to display the maidenhead grid boundaries (4 digit) on top of the USA. right now, I was able to take a KML file and get a whole bunch of tracks that I can turn on or off, but I would much rather have a map that is on all the time (so I can actually see the grid squares' boundaries with other maps under them.
Anyone know of any such map, or can point me in the right direction on how to make one? I am on a Mac, so some of the tools will not work for me.