Evergreen trees will really knock down a TV signal, I've seen many times when an antenna near the ground pointeing below the tree branches will work much better than one higher pointing into the bulk of the trees.
If you are receiving stations in a different direction of where you should it could be a reflection. I have a station I can receive some times that's located NW of me but only get it when I'm pointing my antenna SSW and getting a bounce off of a near by hill.
I can't explain your odd reception conditions, but I will explain how things should effect the antenna and maybe that will help.
If you are using swept forward elements the signal should be stronger in the swept forward direction (about 1-2db). If the elements are flat you should get a reception pattern nearly the same either direction, broadside to the elements.
Make sure that the reflector is oriented so that the 2" spacing is running horizontally and the 4" spacing is running vertically.
This style antenna has a narrow vertical beam width, depending on ground conditions, they will work quite well at near ground level compared to some.
If you are receiving stations in a different direction of where you should it could be a reflection. I have a station I can receive some times that's located NW of me but only get it when I'm pointing my antenna SSW and getting a bounce off of a near by hill.
I can't explain your odd reception conditions, but I will explain how things should effect the antenna and maybe that will help.
If you are using swept forward elements the signal should be stronger in the swept forward direction (about 1-2db). If the elements are flat you should get a reception pattern nearly the same either direction, broadside to the elements.
Make sure that the reflector is oriented so that the 2" spacing is running horizontally and the 4" spacing is running vertically.
This style antenna has a narrow vertical beam width, depending on ground conditions, they will work quite well at near ground level compared to some.