Message Type 84, $GPGSA

Standard NMEA message containing GPS receiver mode, ID of satellites used in the fix, and Dilution of Precision (DOP) values.

Message format is:

$GPGSA,a,b,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,p.p,h.h,v.v,*hh<CR><LF>

Where:

a is the receiver mode: A = automatic; M = manual (select 2D or 3D)

b is fix mode: 1 = fix not available; 2 = 2D; 3 = 3D.

xx is the ID of each satellite used in the fix (unused are 00)

p.p is the Percent DOP value

h.h is the Horizontal DOP value

v.v is the Vertical DOP value

hh is the message checksum

Example:

$GPGSA,A,1,11,11,20,23,32,16,00,00,00,00,00,00,03.1,02.4,02.0*03