The VUCC rules ( http://www.arrl.org/files/file/Awards/VUCC%20Rules%20April%202020.pdf) state:
(F) Grid boundary lines and grid corners must be established using a GPS receiver whose map datum is set to WGS84, the global default for curif nt GPS receivers. The GPS receiver should be set to use WAAS (Wide Area Augmentation System) if so equipped, since this improves the error figure to as little as 5 feet. In no case may the GPS receiver show an error figure in excess of 20 feet. Any modern GPS receiver equipped with WAAS will easily meet this requirement, as will most older units without WAAS.
On Sat, Aug 29, 2020, 12:37 Tom Schuessler, N5HYP via AMSAT-BB < amsat-bb@amsat.org> wrote:
For my information, as I am not much of a rover, but as I may be doing a little local grid rove sometime next weekend by request, how far from a grid boundary can you be for it to count? I found a 4 corners grid boundary in my area, but it is way rural in a deep clump of vegetation with a dirt road a couple hundred feet away. What is the maximum deviation from an X .000000; Y.000000 location for it to be legal as a 4 grid location? I will probably do a much easier 2 grid line location, but just wondering.
Thanks much.
Tom Schuessler, N5HYP EM12ms
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