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Old 10-10-2018, 02:14 PM
SteveL SteveL is offline
Join Date: Feb 2014
Location: Granbury, Tx
Posts: 16
Default GTR20 tuning

Good evening all!
I'd like to install the GTR20 remote comm to save some panel space in my RV7A. I have the GTN650 with the G3X touch. In the unlikely event that I would lose my G3X display it doesn't appear that I can tune the remote any other way. It doesn't look like I can tune the remote from the GTN 650. Any ideas? Thanks in advance!
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Old 10-10-2018, 04:46 PM
N402RH's Avatar
N402RH N402RH is offline
Join Date: Oct 2005
Posts: 664

Use the radio in the GTN650

Rob Hickman
N402RH RV-10
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Old 10-11-2018, 09:17 AM
g3xpert's Avatar
g3xpert g3xpert is offline
Join Date: Sep 2010
Location: Olathe, KS
Posts: 2,277


I think Rob nailed it. One of the primary reasons for a dual COM installation is for redundancy. The GTN 650 COM would continue to be fully functional.

In addition, if communication is lost or no G3X Touch displays are present, the GTR 20 will automatically tune the emergency frequency (121.500 MHz) and set the COM radio volume to a pre-determined level.

In my airplane, I tune both my GTR 20 and GTN 650 through the G3X Touch display because I like the user interface much better, but in the unlikely event of a display malfunction, you have still have GTN COM controls available on the GTN.

For anyone with multiple G3X Touch display installation, the GTR 20 COM can be tuned or controlled from any G3X Touch display.

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 10-11-2018, 02:44 PM
SteveL SteveL is offline
Join Date: Feb 2014
Location: Granbury, Tx
Posts: 16
Default GTR 20 remote

Thanks Levi!
Did not know that the GTR would auto tune 121.5 in the event of a failure. I'm taking the AEA class next week in KC but your info is much appreciated!
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