User's Manual

8-8
(2.1.16) GLL – Geographic position – Latitude/longitude
$--GLL, llll.ll, a, yyyyy.yy, a, hhmmss.ss, A, a *hh<CR><LF>
Longitude, E/W


(2.1.17) HDT – Heading true
$--HDT, x.x, T*hh<CR><LF>
Heading, degrees true
(2.1.18) LRI – Long-Range Interrogation
Longitude – E/W (south-west co-ordinate)
Latitude – N/S (south-west co-ordinate)
$--LRI,x,a,xxxxxxxxx,xxxxxxxxx,llll.ll,a,yyyyy.yy,a,llll.ll,a,yyyyy.yy,a*hh<CR><LF>
Longitude – E/W (north-east co-ordinate)
Latitude – N/S (north-east co-ordinate)
MMSI of "destination"
MMSI of "requestor"
Control Flag
Sequence number, 0 to 9
(2.1.19) LRF – Long Range Function
$--LRF,x,xxxxxxxxx,c--c,c--c,c--c*hh<CR><LF>
Function reply status
Function request, 1 to 26 characters
Name of requestor, 1 to 20 character string
MMSI of requestor
 Sequence number, 0 to 9
(2.1.20) LR1 – Long-range Reply with destination for function request "A"
$--LR1,x,xxxxxxxxx,xxxxxxxxx,c--c,c--c,xxxxxxxxx*hh<CR><LF>
IMO Number, 9-digit number
Call Sign, 1 to 7 characters
Ship's name, 1 to 20 characters
MMSI of requestor (reply destination)
MMSI of responder
 Sequence Number, 0 to 9
Latitude,N/S
UTC of position
Status
Mode indicator