Not a digital station it is above 700. It was doing it while I was on vacation last Sunday. I can't get it to do it again. They may have been hitting the limiter hard, and described it as the audio coming in and out. I changed it to share frequencies with another transmitter we will see if this fixes it. Not a big deal we send the same signal to both IEMs anyways. Won't know much more till people show up for rehearsal on Thursday. I looked more a our set up and we have two transmitters that don't use our combiner. One of which is the one I am having a problem with.