interference

Here's a question for the engineers out there. I have tried many action cameras from GoPro, Sony, and Garmin mounted in different spots on my Diamond DA40. I've had mixed success with controlling them remotely from the cockpit. My latest acquisition is an Insta360 X3. Got a good deal on a...

So this is an odd one. When flying now ATC is telling me my transponder is reporting an altitude about 2500 feet too high (and they haven't been too happy about it, either). I figured out, however, that if I pull the breaker on my Air Data Computer, the problem goes away... WTH?? These 2 things...