Odd humming issue
I have a feed out of VA Beach and I have recently had an issue.
I have a handheld scanner (Rad shack- pro-97) and I have wall adapter instead of the batteries but when I plug in my aux in cable with the wall adapter plugged in I get a humming noise. But if I unplug from the wall and use batteries its fine. I have tried different outlets from where the computer is plugged into but still has issues. any ideas? Is it a grounding issue?
Thanks for looking