Garmin GDL 88 User Manual

4-1

190-01122-03  Rev. A

GDL 88 ADS-B Transceiver Pilot’s Guide

The ADS-B In capability allows the GDL 88 to receive data through the UAT

(978  MHz)  and  the  1090  MHz  receiver.  The  UAT  receives  data  directly  from
another ADS-B transmitting aircraft, ADS-B data from ground stations (ADS-R),
TIS-B information from ground stations, and FIS-B data from ground stations.
The 1090 MHz receiver receives data directly from another ADS-B transmitting
aircraft. 

ADS-B In data is received by the UAT (978 MHz) and by the 1090 MHz receiver.
UAT Received Data

• ADS-B (Data directly from another transmitting aircraft)
• ADS-R (Rebroadcast of ADS-B data from a ground station)
• TIS-B (Broadcast of secondary surveillance radar (SSR)-derived traffic

information from a ground station)

• FIS-B (Broadcast of aviation data from a ground station)

1090 MHz Received Data

• ADS-B (Data directly from another transmitting aircraft)