How do I enter a latitude longitude into my GPS using Google Earth coordinates?

March 15, 2010 by admin · 1 Comment
Filed under: Geography 
gps
lilblackfiero asked:


I know how to enter the coordinates, but the problem I’m having is that Google Earth gives me 2 digits at the end but my GPS wants 3.
For example (random coordinate):
Google Earth:
40°26′47″N
79°58′36″W
Where the 47 and 36 are, which are both double digits, my GPS is asking me for 3 digits. Should I add a “0″ before or after them on my GPS?

Comments

One Response to “How do I enter a latitude longitude into my GPS using Google Earth coordinates?”
  1. BeachBummed says:

    It probably doesn’t matter a lot. The difference would likely be a matter of a few feet. But, so you’ll know–

    first, the 40°26′47” reading is in degrees, minutes, and seconds of arc…if the 47” increases , it goes up to 59, then ‘rolls over’ like an odometer in a car and the 26 becomes 27, and the 59 becomes 00.

    Chances are the GPS wants degrees, minutes and thousands of a minute, not minutes and seconds. So, to be precise, take the 47” for example, and convert it to thousands of a minute…47 divide 60 is .783, so the entered number would be 40° 26.783” .

    The difference between 40° 26.783” and 40° 26.470 would be 0.313…(this is wrong, of course…I’m just saying if you entered 470 for your 3 digits that the GPS wants…”lying” to it, so to speak)…and 0.313 seconds of arc would be about 30 feet error at 45° N or S latitude, since at that latitude 45° is about 49 miles. BeachBummed

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