I'm looking for a new smart tv approx 43". I use an antenna rotator because my stations are distant and enter from multiple compass directions. I need to be able to manually add missed channels after doing an auto-scan. It seems that most recent tvs only auto-scan.... and forget the previously found signals.Does anyone know of a new smart tv that either remembers previously scanned channels or allows channels to be added manually? I have and old tuner/convertor but would prefer to have everything work with just the tv.