I'm trying to get my Garmin 496 to successfully communicate with a Trig 31 transponder so the ADS-b output will work.
I know before the fact that this is not a "certified" GPS and will not be legal for the 2020 mandate so that's not what this thread is about.
I need WAAS input to get ADS-b out. The 496 is putting out NMEA 183 at FAST setting, 9600 baud and the Trig is set to receive that. I have tried 4800, Aviation IN, Normal speed and the lat/long always works on the Trig.
What happens is I'm sporadically getting a warning on the Trig for invalid ADS position. It looks like the culprit is the altitude portion because my signal sometimes displays the wrong altitude on the traffic display.
Does anybody have a 3/496 or other garmin portable correctly talking to a Trig unit?
and
What could be different about a NMEA string on a portable and a panel mount that would be different that the Trig wouldn't recognize it? I thought NMEA was NMEA.
I know before the fact that this is not a "certified" GPS and will not be legal for the 2020 mandate so that's not what this thread is about.
I need WAAS input to get ADS-b out. The 496 is putting out NMEA 183 at FAST setting, 9600 baud and the Trig is set to receive that. I have tried 4800, Aviation IN, Normal speed and the lat/long always works on the Trig.
What happens is I'm sporadically getting a warning on the Trig for invalid ADS position. It looks like the culprit is the altitude portion because my signal sometimes displays the wrong altitude on the traffic display.
Does anybody have a 3/496 or other garmin portable correctly talking to a Trig unit?
and
What could be different about a NMEA string on a portable and a panel mount that would be different that the Trig wouldn't recognize it? I thought NMEA was NMEA.