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Old 07-06-2019, 06:51 AM
Triumph1974 Triumph1974 is offline
Join Date: Feb 2008
Location: Richmond VA
Posts: 89
Default How to test a Garmin 39 gdl antenna?

Hi All,

Does anyone know if it is possible to ?home test? a if the the portable antenna on a Garmin 39 is working. I bought an old one from a guy, but can?t get any stations....

Or if anyone did a belly mount antenna and has and extra Garmin gdl 39 antenna I could borrow for few days to test out my unit let me know.


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Old 07-06-2019, 05:43 PM
g3xpert's Avatar
g3xpert g3xpert is offline
Join Date: Sep 2010
Location: Olathe, KS
Posts: 2,836

Hello Paul,

If I set the Altitude Filter on my Aera 660 traffic page to "Unrestricted" and connect it to a GDL 39/50/52, I see lots of traffic in my house and car, especially airliners.

You don't need any assistance from ground stations to see ADS-B Out equipped aircraft of either type.

Garmin G3X Support
1-866-854-8433 - 7 to 7 Central Time M to F
Please email us for support instead of using Private Messaging due to the limitations of the latter.
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Old 07-07-2019, 04:22 AM
Tooch Tooch is offline
Join Date: Nov 2011
Location: Amelia, Va
Posts: 264
Default No stations

Hey Steve,
I was with Paul when we tested out the gdl -39 on his GP app and mine. The air to air icon is lit so it seems to get that traffic but is not connecting to any ground stations. So no weather either. My plane with at the same altitude and same area picks up 6 stations with my gdl-50
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