STX 165R :: Is this unit ASD-B compatible? Nov 28, 2014 | Is this unit ASD-B compatible? 1 Comment admin on November 28, 2014 at 6:53 pm Yes, combing this with a MGL, GRT, DYNON Avionics and Advance Flight navigator with a a UAT- 978 will give you the 2020 mandate solution. The cost ratio to benefit factor will be a winner for the aircraft owner that currently does not have a WAAS GPS. uAvionix provides an affordable light-weight ADS-B compliant solution for those mostly VFR aircraft that do not currently have a WAAS GPS onboard. Both are ADS-B system with built-in WAAS GPS receiver to provide the required ADS-B position source in addition to providing ADS-B “In” and “Out”.