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Cedar Rapids, Iowa | If you're talking about the NMEA standard sentences, then the GSA sentence contains the data about how good the position fix is, and which satellites were used to get the fix. It doesn't contain any of the position or speed info. It might be nice info to know if you're tracking which satellites you're actively using, but I don't see it as necessary information.
If Greenstar also has it's own GSA string, I have no idea. | |
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