[aprssig] gps/tnc linkup

Greg D. ko6th_greg at hotmail.com
Tue Feb 17 22:25:46 CST 2009

I'm pretty sure that the Garmin eTrex HC series only have USB, and if I recall Scott's messages, the protocol they use over USB is not NMEA.  So, unless his new magic cables can decode this stream from the handheld units (I thought it only worked on the Nuvi-series), I think you're out of luck.

If you haven't purchased the GPS itself yet, there still are some with serial interfaces.  The larger GPSMAP-60 has it, as do the original eTrex (before the H-series).

Greg  KO6TH

p.s.  if those Magic Cables do work with the handheld units, I have an eTrex Vista HCx that would be nice to connect one to...

> From: radiooperator at comcast.net
> To: aprssig at tapr.org
> Date: Tue, 17 Feb 2009 13:39:24 -0500
> Subject: [aprssig] gps/tnc linkup
> hi folks, i have one of them gps cables i got from aea that has a phono plug 
> that suppose to plug into a gps, anyone seen a gps with a input/phono plug? 
> i have not, anyway wanting to try a garmin extrex hc series or another 
> garmin gps that i have to a kpc3+ and wondering how the easy way to do it.
> i know im going to have to cut some wires to the gps,s to get the input and 
> output for the device. does anyone have any ideas the best way to go? 
> wondering why no one is selling the cable to hook  the gps to tnc besides 
> the aea phono plug unit. thanks in advance. just would like to give gps/tnc 
> aprs a try tracking a vehicle. 73 kc8gkf
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