Datum of GNSS receivers
28 Feb 2020
GNSS (GPS) receivers such as the Juniper Geode and the u-Blox NEO M8 (that is integrated in our Mesa 3 and other rugged handheld computers) follow the NMEA 4.1 standard and when using SBAS technically provide data based on ITRF-2000 Current Epoch which is equivalent to WGS-84.
If needing a datum other than WGS-84, then GPS/GIS apps that allow you to collect in other datums include MapIt Pro, ESRI Arcpad, OziExplorer, Cybertracker, and many others. We may be able to provide more options if needed by contacting firstname.lastname@example.org.
If using NTRIP corrections such as with the Juniper Geode then datum may be equivalent to NAD-83.