In article . com,
"Pascal" wrote:

This batch has 742 characters, and thus, the time to send it at 4800
bps is: 742*8/4800= 1.23 sec, which would exceed the recommended
maximum of 1 sec.

Excluding all the optional messages, as allowed in the NMEA setup,
(GSA, GSV, WPL , RME, RMZ and RMM) the batch would consist of 8
messages as follows:

$GPRMC,010003,A,1248.7047,S,03827.5797,W,0.0,94.9, 290505,23.0,W,A*03
$GPRMB,A,0.04,L,AIC,BA01,1248.4128,S,03827.6978,W, 0.314,338.4,,V,A*33
$GPGGA,010003,1248.7047,S,03827.5797,W,1,11,0.8,1. 0,M,-10.5,M,,*66
$GPGLL,1248.7047,S,03827.5797,W,010003,A,A*43
$GPBOD,345.6,T,8.6,M,BA01,AIC*04
$GPBWC,010003,1248.4128,S,03827.6978,W,338.4,T,1.5 ,M,0.314,N,BA01,A*61
$GPVTG,94.9,T,117.9,M,0.0,N,0.0,K,A*19
$GPXTE,A,A,0.04,L,N,A*07

This batch has 412 characters, and thus, the time to send it at 4800
bps is: 412*8/4800= 0.69 sec, well below the recommended maximum of 1
sec.

So, I remind the owners of Map276C to pay attention to this setup,
letting the unit send only the optional messages if needed; selecting
a batch between this two extremes would be advised.

Pascal


If you look at the data you should have noticed that the RMC Sentance
has most if not all of the information that the GLL Sentance has.
There is duplicate information in a bunch of these individual records.
RMA, RMB, and RMC, should have most everything that any NEMA Listener
should need. that's why they were designed in, as Universal Sentances.

Me