Well a few years ago the answer to your question would be YES. and in fact I think the Winegard Sensar IV is very likely the best RV tv antenna made today.
However the Sensar 3 is lots cheaper, and roughly equal to the new one from King COngrols (The JACK antenna).. I have a Sensar II with the opitonal wingman, that makes it identical to a sensar III. (3).
There are a few other options too, but none, near as I can tell, as good as the Sensar 4, even if the #2 spot is shared by Sensar 3 and Jack.
Home is where I park it!