NRF_MODEM_GNSS_NMEA_TALKER_MODE_GP_ONLY

#define NRF_MODEM_GNSS_NMEA_TALKER_MODE_GP_ONLY   1

#include <nrf_modem/include/nrf_modem_gnss.h>

GP only NMEA talker mode.

NMEA strings are only output using the GP talker ID. No NMEA output for other systems.