NMEA 0183 is well documented and there are various "how-to" in www, e.g.:
https://wiki.openstreetmap.org/wiki/Conv...MEA_to_GPX
Am example is here:
https://github.com/ZerBea/hcxdumptool/issues/157
https://wiki.openstreetmap.org/wiki/Conv...MEA_to_GPX
Am example is here:
https://github.com/ZerBea/hcxdumptool/issues/157