I have tried searching for this but just don't understand what's going on. I have an antenna setup in my attic using a SWM. The installer assured me he would set me up with all the local channels OTA but sure enough, no NBC. I live in Meridian, MS zip 39305. The NBC affiliate, WGBC, appears to be within range using both Antennaweb and TVFool. TVFool lists the channel as 31 real, 30.1 virtual. When I first set up the OTA based on 39305 zipcode, WGBC came up as channel 23.4. After 5 or 6 attempts to use different zipcodes (to no avail) I rest the channels and researched. Now WGBC shows up as channel 30.1, but the programming is FOX. Interestingly, TitanTV shows TWO 30.1 channels for my zipcode, one FOX affiliate and one NBC. Any suggestions?