The PA system at our church picks up the broadcast from a nearby high-power AM radio station. Sporadically, one can hear a barely audible broadcast of the station from the PA speakers while the PA system was on. The problem comes and goes. The problem appears to be with one particular microphone and then “jiggling” the cord where the jack plugs into the wall will make the broadcast go away. As far as I can tell, its
XLR cord. The PA system, microphones, and cords are at least 15 to 20 years old.
Any ideas about what causes the AM signal to be picked up and any solutions? (I don’t think anyone has truly troubleshooted the problem. I don’t know if people have tried swapping cords, or microphones, or replacing cords
etc.) I know I’m short on details here, but I can try to collect some more information.
Thanks
Joe