I use a old Wilson Sleek cradle model with a directional antenna. I was asked to review the RV unit a few years back. What I found was that the further away from the indoor antenna the weaker the signal. You can get the same boost as the cradle, maybe a bit better but your device has to be right on the in door antenna. Even a 6 inch difference make a huge change. It is pretty decent for 3 to 4 feet but does not flood the RV like you think it would.
I did not keep it due to the much bulkier package and double the power requirements.
