Magellan NAV 6500 - What Is GPS?

Magellan NAV 6500/NAV 6510 87
NMEA 0183 VERSION 2.0
BWC Bearing and Distance to Waypoint
1 2 3 4 5 6 7 8 9 10 11 12
BWC,hhmmss.ss1111.11,a,yyyyy.yy,a,x.x,T,x.x,M,x.x,N,c--c*hh
1 UTC of observation
2-3 Waypoint Latitude, N or S
4-5 Waypoint Longitude, E or W
6-7 Bearing, degrees True
8-9 Bearing, degrees Magnetic
10-11Distance, naut. miles
12 Waypoint identifier
GGA Global Positioning System Fix Data
1 2 3 4 5 6 7 8 9 10 11
GGA, hhmmss.ss,1111.11,a,yyyyy.yy,a,x,xx,x.x,x.x,M,x.x,
12 13 14
M,x.x,xxxx*hh
1 UTC of Position
2-3 Latitude - N/S
4-5 Longitude - E/W
6 GPS Quality Indicator
0 = fix not available or invalid
1 = GPS SPS Mode, Fix valid
2 = Differential GPS, SPS Mode, fix valid
3 = GPS PPS Mode, fix valid
7 Number of satellites in use (00-12, may be
different from the number in view)
8 Horizontal dilution of precision
9 Antenna altitude above/below mean sea level
10 Units of antenna altitude, meters
11 Geoidal separation - difference between the
WGS-84 earth ellipsoid and mean sea level
(geoid), “-” = mean sea level below ellipsoid
12 Units of geoidal separation, meters.
13 Age of Differential GPS data - Time in seconds
since last SC104 Type 1 or 9 update, null field
when DGPS is not used
14 Differential reference station ID, 0000-1023
GLL Geographic Position — Latitude/Longitude
1 2 3 4 5 6
GLL,1111.11,a,yyyyy.yy,a,hhmmss.ss,A*hh
1-2 Latitude, N/S
2-3 Longitude, E/W