![]() ![]() So if the swing is that much on any given day, are we really getting any benefit of "resetting " the original markings from the mapping companies ? I called the technical hotline and they said it's even worse than -+ 3 meters and depending on location of the various satellites, mountains, time of day etc, the variations can be as much as -+ 6 meters of accuracy. ![]() I recently purchased a handheld Garmin for use in hiking, waypoints etc. So if myself and any other bass fisherman wants to do a " live" update to settings and waypoints and download these for others, there is no possible way those marking are as accurate as the original Navionics or Lakemaster settings. My understanding is that all the "lake maps " that companies generate are made up from satellites that are incredibly accurate ,-+ a few centimeters ( Government satellites, I think there are 16 ) All the GPS chips used in any commercial GPS system can not lock on the Government coordinates and are therefore relegated to significantly less accurate GPS settings and are at best -+ 3 meters ( that's 9 feet of swing on any given day ). Let me preface this by saying that I used to represent a Silicon Valley company that sells GPS chip sets, and I worked very closely with Trimble Navigation in Sunnyvale Calif. I have posted this type of info before, will try again and see if somebody from a high level at either of the mapping companies will reply. Kayak, Kick Boat, and Belly Boat Anglers. ![]()
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