[ADTech]

If the coordinates provided accurately depict the antenna's current location, I see three things of concern:

1. The antenna is below your neighbor's house in the direction of Poteau Mtn. You're already in a topographical hole for that signal, so a further impairment of the signal being blocked by his roof is all it would take to render that station unreliable, especially when trying to receive it from the back of the DB4e. My recommendation is to move the antenna up to the western peak of your roof and use a longer mast (10') with a gable mount. I don't know if you'd already tried that location or not, but it's as good as you're going to get.

2. Your signal path to the north northeast has a number of trees right in the signal path. I have no expectation of reliable reception of UHF stations when trees are involved. Either it will work or it will be unreliable.

3. Your local PBS station operates on VHF channel 9. If its reception is a concern, then adding a VHF-1 VHF Retrofit Kit would be expected to help out.

I do not see a need for a preamplifier as it likely will have little effect.