Most if not all antenna's are directional on RV's.
I never care about direction since signals will come in from multiple locations. If you go into the TV menu on a channel there is a signal meter. If I get a jumbled station I go to the menu and rotate the antenna until I get multiple bars. it will say if the signal is good.
My only complaint is that the menu is timed....it goes off after 30 seconds or so. I wish it would stay on until I want it off.
PLEASE do not send questions via Private Message, my inbox fills up too quickly. Post questions in the forum as a new thread so that other users can benefit from the answers. Use Private Messages for sensitive information only (VIN, Contact info or things you do not want the public to see).