[aprssig] Garmin emulation

[Tyler Allison]

>> NMEA data.  Maybe later versions will generate the Garmin native
>> protocol?  If not, a smart terminal program and the Garmin manual (you
>>  may have to poke about Garmin's website for the appropriate one that
>> details their native protocol, but it is documented) should do the
>> job...
>
> I've already got that part working.  My program emulates a Garmin GPS for
>  testing purposes, and will send and receive position/velocity/time data,
>  decode waypoints, and so forth.  I just need the virtual serial port
> program to avoid tying up two serial ports and a null modem cable.  If it
> works out, it'll open up a lot more options for APRS mapping software,
> even if it's not totally automated.

www.franson.com

They have a 14day trial.

-Tyler