Garmin GDL 88 Series Pilots Guide - Page 43

TIS-B UAT XPDR Traffic Information Services-Broadcast. TIS-B supplements ADS-B's air-to-air services to provide more situational awareness in the cockpit of all traffic known to the ATC system. The ground TIS-B station transmits surveillance target information on the ADS-B data link for unequipped targets or targets transmitting only on another ADS-B link. TIS-B is a free service available to aircraft operators equipped with ADS-B Out and ADS-B In. Universal Access Transceiver. The GDL 84/88 UAT transmits ADS-B Out data on the 978 MHz (UAT) frequency. The GDL 84/88 UAT receives ADS-B, ADS-R, TIS-B, and FIS-B on 978 MHz. Transponder. The equipment which broadcasts aircraft code, altitude and other information to ground facilities and other aircraft. 190-01122-03 Rev. E Garmin GDL 84/88 ADS-B Transceiver Pilot's Guide 7-3