I also have opened the ADSB Mode. Even with it opened, the AF5600 does not connect to the Stratus 3. Opening the ADSB Mode on the Stratus 3 also prohibits the iPad from being connected. Has connecting the Stratus 3 to the AFS5600 ever been successful. It appears from my end that it doesn't work. I hope I can return the $800 Stratus 3. If you have any more suggestions, please provide.