Garmin Appliance Data User's Guide Page 49

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37190-00607-02 Rev D
Detailed Operation
ADS-B Traffic (TRAF) Function
The ADS-B Traffic Function allows you to view other traffic in the area, when installed with a UAT data link
radio, such as the Garmin GDL 90 or GDL 88. This screen can also show your flight plan. Traffic is shown in rela-
tionship to your aircraft. “Smart” keys allow you to zoom in and out, and select an individual traffic target. Review
the Limitations section in the front of this guide for the limitations that apply traffic data.
Automatic Dependent Surveillance-Broadcast (ADS-B) is a surveil-
lance technology being deployed throughout the NAS. ADS-B equipment
broadcasts a radio transmission approximately once per second contain-
ing the aircraft’s position, velocity, identification, and other information.
ADS-B equipment can also receive reports from other suitably equipped
aircraft within reception range. Additionally, these broadcasts can be
received by Ground Based Transceivers (GBTs) and used to provide air
traffic surveillance services, along with fleet operator monitoring of air-
craft. No ground infrastructure is necessary for ADS-B equipped aircraft
to detect each other.
In the United States, two different data links have been adopted for use with ADS-B: 1090 MHz Extended Squit-
ter (1090 ES) and the Universal Access Transceiver (UAT). The 1090 ES link is intended for aircraft that primarily
operate at FL180 and above, whereas the UAT link is intended for use by aircraft that primarily operate at 18,000
feet and below. From a pilot’s standpoint, the two links operate similarly and support ADS-B and Traffic Informa-
tion Service-Broadcast (TIS-B). The UAT link additionally supports Flight Information Services-Broadcast (FIS-B).
ADS-B Traffic page showing 360 degree arc
ADS-B System Description
ADS-B Traffic
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