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I have a Kantronics KPC3 Plus, HTX-202 and a Garmin GPS 12 without a computer in my 94 Mazda B3000.
I can not get it to display speed, direction, but it does do altitude. :?:

Below is what it shows on http://www.findu.com/cgi-bin/find.cgi?call=KB7ZKA-9 at this time.

KB7ZKA-9>GPSLK,SOMTN,WIDE1*,qAR,K7MCR:$GPRMC,015009,A,4731.421,N,12239.037,W,000.0,064.4,190708,018.2,E*6A
KB7ZKA-9>GPSLK,SOMTN,WIDE1*,WIDE2-1,qAR,K7MCR:$GPGGA,015009,4731.421,N,12239.037,W,1,06,1.1,82.8,M,-18.7,M,,*43
KB7ZKA-9>GPSLK,N7GME,SOMTN,WIDE2*,qAR,K7MCR:$GPGGA,023657,4731.417,N,12239.040,W,1,08,1.9,77.4,M,-18.7,M,,*4E
KB7ZKA-9>GPSLK,N7GME,SOMTN,WIDE2*,qAS,KB7UVC:$GPGGA,221118,4731.418,N,12239.042,W,1,09,1.2,82.4,M,-18.7,M,,*4F
KB7ZKA-9>GPSLK,N7GME*,SOMTN*,WIDE2-1,qAR,K3JZ:$GPGGA,221118,4731.418,N,12239.042,W,1,09,1.2,82.4,M,-18.7,M,,*4F
KB7ZKA-9>GPSLK,N7GME,SOMTN,WIDE2*,qAS,KB7UVC:$GPGGA,221118,4731.418,N,12239.042,W,1,09,1.2,82.4,M,-18.7,M,,*4F

If you need more information about my settings I will go rip the tnc out of the truck, it's no problem.

Thanks in advance
Kb7zka/ Ben CN87QM

To get position, speed, date and time you need to use the $GPRMC string. The $GPGGA string only contains position, altitude, and time. You may want to use one string in GPSHEAD 1 every 2 minutes and the other in GPSHEAD 2 every 5 minutes. I'm not aware of a string that indicates direction, as you would usually see what the direction is when looking at an APRS screen.