1

$—: Talker identifier

2

VTG: Datagram identifier

3

x.x,T: Course over ground (Degrees True)

4

y.y,M: Course over ground (Degrees Magnetic)

5

z.z,N: Speed over ground (knots)

6

g.g,K: Speed over ground (km/hr)

7

a: Mode indicator •  A = Autonomous •  D = Differential •  N = The data are not valid.

8

*hh: Checksum