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[aprssig] APRS Icons on Garmin Receivers

Scott Miller scott at opentrac.org
Sun Feb 11 17:17:13 UTC 2007


> extra GPS).  Unless the T2 will translate Garmin binary into 
> NMEA and I've
> forgotten?

Not yet, but it wouldn't be terribly difficult to generate GPGGA and GPRMC.
It's just more code space.  It already has to do some internal conversions
to handle Garmin binary format for APRS - had to rewrite some of the trig
functions already because the ANSI C ones were too precise at the cost of
efficiency.  So the math is there (converting radians to degrees, X/Y speed
to course/speed, etc) but it needs some extra code to generate the NMEA
sentences.

I've also thought about having it output NMEA for a single named station.
That way if you're interested in tracking one thing (like a balloon) you
could feed it in to any mapping program and have it track the station as if
it was your current position.

Scott
N1VG






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