Thanks Hans. I’m embarrassed to say that I think you identified the issue correctly. After several uses in the field, the Digi mode background noise level seems entirely reasonable.?
I made several screwups in assembling the radio, and while I think I recovered successfully, there is always that little doubt in the back of your head “did I mess something else up and not catch it?”
at any rate, it’s “case closed” as far as I am concerned.
73, Matt
