I've noticed something and am in search of knowledge. I recently purchased the Polk XRT12 and love it ! The other day, I had it on and was nuking something in the oven. I realized that he signal on the XM was cutting in and out. The signal strength meter was bouncing from it's typical 3 bars down to 2, then 1. Once the microwave shut down, the XM returned to normal. The oven is a good 15 feet away from my radio/antenna. Do I have a 'leakage' problem with my mic (it's pretty old) ? Or is this one of those things ?