For a long time, I did have a preamp at the antenna. With the preamp, the LG did pretty well at the end of 100 ft of coax, but I was having problems with three stations (two PBS and ION). I even bought a separate ATSC tuner.
So I have swapped the upstairs TV with the basement TV. Now everything is beautiful. This is with two recently bought antennas - because of compass directions (an RCA Ant 751 and a Channel Master 2018) reused my Winegard 8700 preamp for ION and a new Jointenna.
Comtemplating buying another, bigger TV. Wifey will let me but its an elective outlay.