Your checksum (two digit hex number after the ) is wrong. The correct string would be: $PMTK251,480014
You can calculate the checksum by XORing all bytes between the $ and the *, or just google NMEA checksum calculator.
Your checksum (two digit hex number after the ) is wrong. The correct string would be: $PMTK251,480014
You can calculate the checksum by XORing all bytes between the $ and the *, or just google NMEA checksum calculator.