[JRTJH]

Not "every location" in a 360 degree area from a broadcast tower will receive the signal. As an example, in Marquette Tourist Park Campground, there is a power plant that is powered by coal. The chimney (30' in diameter and 100' tall) for that power plant sits directly in line between the broadcast tower and the back row of campsites. TV reception is great in every campsite except the back row.

So, I'd suggest that before you go ripping things out and do extensive troubleshooting, tow the trailer a couple miles from the current location and see if you get TV reception there.

You might have a problem with a faulty component or a bad crimp on a connector, then you may have nothing wrong "electronically" but just be in a bad reception area.