I have a VIP 211. Zip is 19930, Bethany Beach,De. Dish does not offer locals so an antenna for OTA is necessary. I get the expected channels except WMGM out of N.J., (NBC) does not come in with sound. Picture is about 70-75%. I have another digital receiver in another room hooked up to the same antenna (DB4) and amp (Radio Shack) through a splitter and that set gets audio on offending station. I have tried changing the dolby settings in the 211 but still no sound. Any thoughts or suggestions to resolve this issue are greatly appreciated.