Mandates the use of GNSS System IDs when the Talker ID is "GN" to accurately identify satellite systems. National Marine Electronics Association (NMEA) Sentence Structure Every NMEA 0183 message follows a strict format: Elizabethtown College Start Delimiter: Always begins with a character. Address Field: A five-character code (e.g.,

NMEA 0183 Version 4.11 Protocol Specification

The first version of NMEA 0183 was released in 1983, and it quickly gained popularity in the marine industry. Over the years, the protocol has undergone several revisions, with new versions introducing additional features and improvements. The latest version, NMEA 0183 Version 4.11, was released in 2019.

Typically uses RS-422 differential drive for better noise immunity.