I have recently installed a TERK 42 antenna for OTA local channels. My 811 receiver has froze up twice now since installing the antenna (3 days). The program guide will show 'no info avail' and then go into the acquiring satellite signal and just freeze up. I have a 522 receiver also connected and have never encountered this problem. Has anybody had this happen and know how to fix it? From what I've read, it sounds like the 811 is a piece of junk!