(Just like 2.2 pounds is the same as 1.0 kilograms) The important thing to remember about the situation described above is it's just a display issue - the coordinates are still pointing to the exact same spot on earth. If EasyGPS is displaying WGS decimal degrees, the displayed numbers will be different than the deg min.min coordinates on gc.com For example, if you are looking at WGS84 deg min.min format on (the default format there) and you accidentally switched EasyGPS to display NAD27 datum, you'd get coordinates that are different. What's more likely is that you've changed the datum or coordinate format in EasyGPS, and now you're comparing apples to oranges. gpx files use WGS84, decimal degrees, and EasyGPS uses the same coordinate format internally, so there's no conversion calculations to get messed up when EasyGPS reads or writes a file. It seems extremely unlikely that EasyGPS could be altering coordinates. There's nothing like a paper map to give you the big picture.įeel free to contact me if this tutorial doesn't answer your questions about custom basemaps on your Garmin Montana 650: I always print a large topo or aerial with UTM grid lines to carry along as well. Personally, I find that sending a color orthophoto (high-res aerial imagery) to the GPS to be more useful in navigating for the types of activities I do in the field. That's enough to cover most multi-day trips. ExpertGPS will prepare and send these maps for you, and they can be up to 10,000 x 10,000 pixels in size. Because your Montana supports Custom Maps, you can send a digitized USGS 1:24K topo map, scanned paper map, OSM street map, or aerial photo to your GPS to use as a custom basemap. I want to get topo map for my Montana 650 and am looking into at Expert GPS maps they seem to be good but have never had to use topo maps until now.am planning on doing some hiking.i also see that Garmin has them available also.i am sure they both have pro's and con's and am looking for some input so as to make a decision.if you have used one or both or another that you think is highly rated i would appreciate any advice.Thanks in advance
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