SV intercom - Garmin GNS430

Airbrass

I love flying!
Joined
Apr 7, 2015
Messages
1
Much appreciated if anyone could help or provide information.

When the Garmin NAV output is connected to the SV intercom I get a loud tone approx 1000hz in the headsets.  The tone does not adjust with volume, I can hear the ident VOR in the background fine.  The VHF radio side of things is fine.

Checked the whole system for earth loops and corrected a couple of issues but so far not resolved the annoying tone.

Any thoughts or ways of isolating?

Many thanks, Dave UK
 
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