Garmin Pilot Guida Utente

190-01501-00  Rev. N

154

The  GDL 39 is a Bluetooth

®

 enabled receive-only data link radio with on-board 

GPS, 978 MHz (Universal Access Transceiver frequency band), and 1090 MHz Extended 
Squitter (1090 ES) receivers.  It is designed to receive, process, and output traffic 
(ADS-B air-to-air, and TIS-B traffic information), and weather (Flight Information 
Service-Broadcast (FIS-B)) information to Garmin Pilot through Bluetooth.

ADS-B (Automatic Dependent Surveillance-Broadcast) is a surveillance technology 

deployed across the United States as the cornerstone of the FAA’s Next Generation Air 
Transportation System (NextGen). ADS-B enables improved surveillance services, both 
air-to-air and air-to-ground, especially in areas where radar is ineffective due to terrain 
or where it is impractical or cost prohibitive. Initial applications of air-to-air ADS-B are 
for “advisory” use only, enhancing a pilot’s visual acquisition of other nearby ADS-B 
equipped aircraft either when airborne or on the airport surface.