[time-nuts] PPS sync

[Mark Sims]

Be careful when using one unit's location to set a different model's location...  particularly the altitude.   Some devices report altitude in MSL, others in AGL... and different units may use different models for the ellipsoid.   You are always better off using coordinates generated by the particular device (either the built-in self survey or something like Lady Heather's precision survey).

I did some tests while developing Lady Heather's precision survey code.   I got pretty consistent lat/lon/alt results on the same units but consistent offsets between different models of receivers.

I would suggest letting the Motorola re-surevy itself...  it may have been a bit groggy after first being powered up after a few years of sleep... I know I am...

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> I then set the M12 reference location to the Lucent location as I know it to be correct.