In article , "Anonymous"
wrote:

I am trying to set up an APRS station consisting of a Garmin GPSmap 60 and
one of the TinyTrak3 TNCs. However, the green 'GPS Valid' LED never lights.

Al-

Russ may be right about needing level conversion. Another possibility is
that you need a null-modem adapter in the line between the GPS and the
TNC.

And what about baud rate? What if the PC has automatic baud-rate
adjustment and the GPS & TNC don't?

73, Fred, K4DII