StevenAudio

Hi, I just bought two t.bone IEM 75 units although I use it from my analog mixer so everybody has the same sound. When I connect two receivers to one unit, it's fine. When I turn on the second unit, there's a high pitched feedback or certain squealing that varies on where I stand. I'm guessing that's it's from the two antennas sending signal in a weird way. Is there a way to fix this problem?