Garmin GDL 88 Weather Radio User Manual


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2-5
190-01122-03 Rev. A
GDL 88 ADS-B Transceiver Pilot’s Guide
2.3 Traffic Information Service - Broadcast (TIS-B)
TIS-Bprovidesthebridgebetweenthecurrent,radarbased,ATCsystemand
the futureADS-B based system. When an ADS-B In or Out capable aircraftis
withintheservicevolumeofanFAAADS-Bgroundstation,thegroundstation
will begin to broadcast a portion of the ATC radar picture to the aircraft. This
aircraftisthenincludedinthelistofaircraftthatisbeingprovidedTIS-Bservice
andisthenconsidereda“TIS-Bparticipant.”
ATC radar tracks for other aircraft within ±3,500 feet and 15 NM of the
participant will be provided by the ground station, to include altitude, position,
ground speed, and ground track. TIS-B data is broadcast once every three to
thirteen seconds depending on the characteristics of the radar providing the data
to the ground station.
Figure 2-5 TIS-B Operation - FAA Illustration
NOTE: Even if the display is showing TIS-B traffic, unless the TIS-B participant
indication is present (see Section 2.1) , TIS-B services are not being provided
specific to your aircraft and the traffic picture may not be complete.
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