I’ve created an issue (#738) in GitHub for the SparkFun_RTK_Everywhere_Firmware, but I’ll give a heads-up here for others who might encounter this bug. I found it in version 2.2 of the firmware, running on a Facet mosaic.
In the serial configuration UI’s Base configuration menu, the total height above the ellipsoid for the antenna phase center (HAE APC) is not displayed correctly. The “Antenna Height” and “Antenna Phase Center” are being divided by 1,000 an extra time before being added to the “Altitude”.
In the screen shot below, the HAE APC should be 71196.500 mm.
In reviewing the code, it looks like the problem exists only in the calculation done for display in the Base menu; the similar calculation done elsewhere, where the HAE APC is actually used, appears to be correct.