GPS Tutor downloadable Software Ram Used: 49 Resolutions: Palm Standard (160×160) GPS Tutor lists and dissects NMEA “sentences” commonly used by marine, handheld and avionic navigation equipment containing GPS (and Loran) sensors. Upon selection, they are broken down into fields or groups (related fields) using three different format options. Scrolling through each field/group presents a concise description and a general sentence overview. Sentences are presented in several formats and are grouped by NMEA “version” along […]