[aprssig] THD7A GPS Question

[Sam Guccione]

After a long lapse I am trying to get my THD7A setup with a GPS. However,
something doesnt seem to be working. I am using a Garmin ETREX set to NMEA
output. I can see the GPS sentences when I plug it into the serial port on
my laptop. I connected the ETREX to a cable with a subminiature plug then
into the GPS jack on the THD7A. I expected to see the POS have the GPS lat
and long but all I get are all zeros. Manual does not say much of anything
about the GPS port. Anyone have suggestion on what I could try to get it
working. What am I missing? Something stupid?

Sam K3BY