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Part# 11-11587
MFR Model# 010-11689-07


Note: For use with the Garmin Pilot App and other Garmin Portable systems only.

Note 2: GDL 39 can only receive ADS-B information in the USA.

Get ADS-B traffic and subscription-free weather on your aviation portable or mobile device with the GDL 39 ADS-B receiver. When using Garmin Pilot on your mobile device, GDL 39 can provide highly accurate WAAS GPS data as well.

GDL 39 features ADS-B “In” datalink technology that allows it to receive subscription-free Flight Information Service-Broadcast (FIS-B) weather information over the FAA’s 978 MHz Universal Access Transceiver (UAT) uplink. Easily access animated NEXRAD radar, METARs, TAFs, winds and temperatures aloft, PIREPs, NOTAMs and more right on your compatible Garmin aviation portable or through the Garmin Pilot app on your iPad® or Android device.

GDL 39 can receive ADS-B position reports directly from other aircraft in your vicinity. Because the FAA permits ADS-B broadcasts on 2 frequencies (978 UAT and 1090 ES), GDL 39 contains both receivers so you can see a comprehensive view of all ADS-B “Out” equipped targets. The compatible display² will alert you by announcing traffic targets both audibly and visually. Spoken audio alerts announce “Traffic, Traffic” to get you looking right away.

ADS-B “In” technology also allows the GDL 39 to receive Traffic Information Service-Broadcast (TIS-B) information. TIS-B allows you to view the same dynamic traffic picture that ATC ground controllers are seeing when you're either participating with an ADS-B “Out” solution or within a certain range of another ADS-B “Out” participating aircraft when within a service area³. Our correlation technology automatically displays the highest-integrity traffic data from multiple sources, preventing ghost or duplicate targets.

With Garmin Pilot on your mobile device, you can receive advanced traffic display features like TargetTrend™ relative motion tracking that provides a faster, more intuitive way of judging target trajectories and closure rates in relation to your aircraft's position. TargetTrend relies on ADS-B “Out” equipped targets, so while not all targets will display with trajectories today, this feature will be come increasingly beneficial to pilots in the future. SURF technology also supports the display of ADS-B-equipped surface targets on your map screen.

GDL 39 can provide highly accurate WAAS GPS location information to your mobile device — such as an iPad — using Bluetooth technology. This provides your device with the precision you’d expect from our aviation-grade navigation devices, updating at a rate of up to 5 times per second depending on the capability of the device used.

With built-in Bluetooth capability, GDL 39 can wirelessly send the data it collects to devices running Garmin Pilot, as well as the aera® 660 and the 795/796. GDL 39 collects and stores all available traffic and weather data in your vicinity so it can be available as soon as you turn on your display. It's capable of simultaneously providing wireless data to 2 devices while hardwired to a third. As opposed to using a Wi-Fi link, Bluetooth lets you stay connected while on the ground so you can continually receive the latest weather reports as long as you have a data connection — no manual switching of networks required. Just set it up once and it will automatically remember and pair with your mobile device the next time you hop in the cockpit


  • Receives subscription-free weather
  • Acquires ADS-B traffic targets
  • Wireless Bluetooth™ connectivity
  • Built-in WAAS GPS receiver
  • Integrates with Garmin Pilot app and Garmin aviation portables


  • Unit dimensions, WxHxD: 3.5" x 1.9" x 6.0" (8.89 x 4.83 x 15.24 cm)
  • Weight: 0.48 lb (0.22 kg)
  • Operating temperature: 20°C to +60°C (-4°F to 140°F)
  • Operating altitude: To 55,000 ft
  • Power input: 10 to 32 VDC, 3.5 W max.
  • Battery charge power: 4.5 W max
  • Total power while charging: 8.0 W max
Battery Assembly
  • Type: Lithium Ion Rechargeable Battery
  • Unit dimensions, WxHxD: 3.8" x 0.9" x 6.4" (9.65 x 2.29 x 16.26 cm)
  • Output voltage: 7.4 VDC
  • Charging voltage: 10-32 VDC
  • Charge temperature:Unit may not charge at extreme temperatures below 0° C (32° F) or above 32° C (90° F)
  • Operating temperature: -20° C to +60°C (-4°F to +140° F)
  • Typical battery operating time: up to 4 hours


In The Box

  • GDL 39
  • Power adapter (cigarette plug)
  • Back Up Battery
  • Mounting bracket
  • Suction Cup for Cable
  • Pilot's Guide
  • Free Trial of Garmin Pilot App
  • Accessories
  • Customers Also Viewed
  • Frequently Purchased With
  • Related Items


Bought as a spare for original battery.

Mark C
November 23, 2019

It works! Now I have ADS-B in, using my Samsung Tablet running Garmin Pilot and my Garmin Aera 660. I use an Appareo Stratus3i for ADS-B out so I could not find any other way to get the important inbound information. This appears to do it.

Pierre H
July 23, 2020

Seems to work as advertised. Might even only look for ADS-B out for my C-172 and only use this for the ADS-B IN. Much better then the Garmin GLO. I have been through two of them and they connect but do not recieve GPS.

Kevin C
October 15, 2013


Q: Does the GDL 39 work with the WingX app?

No, this will only work with the Garmin Pilot app.

Q: Will this product work with Foreflight and Garmin marine blue chip maps?

No, the GDL 39 will only work with the Garmin Pilot App as well as the 796/795, 696/695 and Aera 500 series products. It will not work with Garmin marine blue chip maps as well.

Q: What traffic services will I receive from the GDL 39?

The GDL 39 has the ability to receive two types of traffic; air-to-air and ground-to-air. The GDL 39 can detect and display other aircraft in the vicinity of your aircraft, that are equipped with an ADS-B Out transponder with ES (Extended Squitter) or a Universal Access Transceiver (UAT). The GDL 39 also has the ability to receive Traffic Information Service (TIS-B) from FAA ground stations transmitted over the 1090 MHz datalink. TIS-B traffic includes targets being tracked through ADS-B technology and paints a comprehensive picture of traffic within +/- 15NM and +/- 3,500 feet of your position. This traffic service will only be available to aircraft that are equipped with an approved ADS-B Out solution and a certified WAAS GPS position source.

Q: How can I update the firmware on the GDL 39?

The process for updating the firmware will vary depending on what device you are using with the GDL 39. If you are using the GDL 39 along with a Garmin aviation portable device the software will be received through the portable device. The software for your portable can be obtained by either visiting or using our WebUpdater program. If you are using the GDL 39 along with an iOS or Android moible device you can use the GDL 39 Utility Application available on the iTunes App Store and the Google Play Store. This is a free download and requires a Bluetooth connection between the GDL 39 and the mobile device. In either case, the unit will only update when connected to an external power source.

Q: How many devices can I connect to the GDL 39?

The GDL 39 can be connected to as many as three devices at one time. A connection to the GDL 39 can be made two different ways; either by using a power/data cable or a Bluetooth connection. The GDL 39 can be connected to several Garmin aviation portables via a power/data cable (included with the GDL 39) as well as two bluetooth enabled devices (i.e. aera 796, iPad, or Android tablet). Compatible Garmin Aviation products include the aera 795/796, aera 5XX Series, GPSMAP 695/696, GPSMAP 495/496, GPSMAP 396, G3X Garmin Pilot Application for iOS and Android tablets and phones.

Q: What weather services will I receive from the GDL 39?

The GDL 39 has the ability to receive subscription free Flight Information Service (FIS-B) that is broadcast from FAA ground stations around the United States and the Gulf of Mexico. FIS-B weather products include NEXRAD in the Continental U.S., NEXRAD Regional, TFR, TAF, PIREP, NOTAM, SIGMET/AIRMET, METAR, and Winds Aloft information. One key difference between FIS-B and satellite based weather services is that FIS-B is broadcast from the ground upward. Therefore your proximity to the ground station may present some line-of-sight disturbances and services may not be received until airborne.

Q: Can the GDL 39 display traffic and weather on my certified panel mounted avionics?

No, the GDL 39 will only interface with Garmin Aviation portables and experimental products, as well as iOS and Android tablets and phones. These products include the aera 796/795, GPSMAP 696/695, aera 5XX Series, GPSMAP 496/495, GPSMAP 396, and the G3X.

Q: Will this directly connect to the Garmin aera 660?

This will connect wiht the Garmin Aera 660 via Bluetooth.

Q: Does the Garmin GDL 39 have AHRS to work the synthetic vision on the aera 660?

No, you will need the GDL 39 3D or the GDL 50 for that feature.