The GDL 88 also features ADS-B “In” datalink technology that allows it to receive subscription-free Flight Information Service-Broadcast (FIS-B) weather .... Garmin has received the FAA's TSO authorization and AML STC approval for the GDL 88 series, its dual-link ADS-B solution for certified .... Garmin's first certified dual-link ADS-B solution, the GDL 88 provides a path to ADS-B “out” compliance and brings subscription-free weather and advanced ....

With ADS-B “Out”, the GDL 88 gathers information about your position, track and ground speed from either your existing WAAS GPS source or an optional built-in .... Hello Kent, You would need to install separate antennas for both the GTX 327 and the GDL 88.

They cannot share an antenna. You are correct that ....