Originally Posted by Daemon
I don't see any issues in your circuit. No ground loops, and the one LC filter you have, should
be sufficient (I've never had to add a 2nd closer to the video Tx). What are you doing with the
audio line? Is audio signal clamped to ground, or free floating? Might have noise coming in
there, and that can interfere with video. pete beat me to it.
The audio from the vtx is just free floating, should i try grounding it? thanks