We don't use an antenna at home---we're on cable for the house sets. I Googled the channel names/letters that came up in the Auto Scan (since none of them were familiar to me) and they are not channels that appear in our cable lineup, even though we have 700 channels available to us! The numbers on the 8 different channels appear after the dash: 33-1 33-2 33-3, etc. I have no idea what that means but that's how they appear on the screen. All 8 of these channels come in bright and clear.
If we are having a coax-to-cable problem, where/how would I find that out? The wires inside the trailer (coming out of the wall and those going out/coming into the television set all look good---so crimps or bends. If the trouble is inside the wall then that would be something I can't see and am not sure I'd be able to fix (neither I nor the hubby are electronically proficient).
I did turn the amp button on and off, just to see if that would get us more than the 8 channels but it didn't. Turned off I got a screen full of snow and turned on I get the 8 channels and nothing more. We do have an outdoor cable input which we've never used as none of the parks we camp at have cable. I don't remember seeing a choice of changing the tv setting to cable or antenna but I'll double-check that as well.