I'd bet coffee and donuts the root of this is going to be a Hi-Z ground in the bypass/noise. I'm running into a LOT of Hi=Z grounds these days. When I get to work on something ;-) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.qth.net/pipermail/arc5/attachments/20250825/e401ca69/attachment.html>