It's good to be back! So here's the deal. Our church has been blessed with an amazing sound system that has been set up and calibrated so well that in the four years I've been working with it, I've never encountered any issues that I would have to research to figure out. It was only when I bought some equipment for a friend's church that I ran into a bit of an issue with sound equipment.
I bought a couple used Shure ULXP4 receivers with ULX1 bodypacks. I went to our church to test them out. I used our Countryman E6 and tried each Shure system individually. I had the receiver sitting on the rail of the booth with the display facing me inside the booth. With the beltpack turned on and the gain set appropriately I was pleased with the sound. Then I leaned one way or another and started to hear a buzz, almost as if there was a short in the cable. I'm guessing it was RFI. When I moved outside the booth and towards the chancel (stage) the buzzing stopped immediately.
What's causing the buzzing, and should I look into getting an antenna distribution system for a pair of these?