Yesterday, Thankgiving, I noticed that one of my OTA channels, channel PBS(2-1), disappeared. I have an HD 200 that has worked flawlessly. I,m pulling in stations from the N. Miami area with a Channel Master "Stealth". I get all the channels with a perfect signal. PBS Miami is channel 18, so I tried a manual scan and it pulled 18 in, not as 2-1, as it was before, but as 18-3! My questions are; why did I lose only one channel? Shouldn't have stayed in my guide if the station stopped the signal? And why didn't my HD-200 set the channel back up as 2-1. Can I somehow set it back as 2-1 instead of 18-3?