Have installed my Navworx ADS-B, but in my lack of full understand of the transponder/altitude encoder wiring to the connector on the Navworx box, I did not purchase the Transmon connector unit. I have a Garmin 327 which gets the gray code from my MGL Voyager. I see no way of getting the altitude signal to the Navworx unit except to purchase a separate encoder divice. So, I guess it is best to buy the Transmon from Navworx. I am correct?
