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ADS-B - Garmin GDL-82 installation

 
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Argonaut36



Joined: 19 May 2019
Posts: 35
PostPosted: Sat Jul 20, 2019 5:10 pm    Post subject: ADS-B - Garmin GDL-82 installation Reply with quote
In my airplane there are at least 3 options for grounding the GDL-82:
1. Grounding to the avionics box that contains the electrical bus, the radio and the transponder. The box is attached with screws to lugs welded to the airplane tubular frame. Paint was removed where necessary to ensure good electrical continuity to the frame.
2. Grounding to a single screw on the firewall to which the radio, the transponder and the encoder are already grounded.
3. Grounding to a new screw on the firewall in the general area where the above mentioned ground screw is.
What would be the recommended solution? Right now (before installing the GDL-82) there is some background noise in the radio, transmitting and receiving. I am concerned about the GDL-82 working properly and not making the radio worse.
Thanks

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