u-blox NEO-M8N (Firmware v2.01) Specifications NEO-M8 series RTKLIB startup commands Enable TRK-MEAS !HEX B5 62 06 01 03 00 03 10 01 1E 69 Enable TRK-SFRBX !HEX B5 62 06 01 03 00 03 0F 01 1D 67 Enable NAV-CLOCK !HEX B5 62 06 01 03 00 01 22 01 2E 87 Enable NAV-SVINFO !HEX B5 62 06 01 03 00 01 30 01 3C A3 Enable NAV-TIMEGPS !HEX B5 62 06 01 03 00 01 20 01 2C 83