I agree with Neil ...
I tried a big 5 element beam antenna with a signal booster and with a rotor motor to aim it ... it worked great.... but....
while I was goofing around with the two antennas, I discovered that if I left the "BatWing" antenna down , almost touching the RV roof, that it worked just as good and brought in a clear and sharp picture just like the Big 5 element antenna did..
No, I don't know why, but it did...
So I took the big antenna back to the house and used the RV's BatWing antenna in the lowest position without it touching the RV roof.
Of course, after I stopped traveling so much, I opted for the Cable television in the RV park..
So try moving the BatWing up and down and see if it helps bring in a clearer picture..
Best wishes,
John