I bought this after being frustrated with my old system of "rotate antenna, do a channel scan, rotate again, do another scan, etc".After installing, we went to a campsite we were at a few months previously where we only picked up one channel using the manual method.  Using the new Winegard Sensar Pro, we were able to home in more precisly in the direction of the antennas for different stations and picked up 3 more channels, including a nice digital PBS station, that we didn't find previously.My only gripe is that it's not easy to install this somewhere where you can see it or work the controls near where the antenna crank/rotator is.  I thought about this ahead of time and installed it in a spot where I can (barely) see the display while rotating the antenna, but it's awkward.  Not all RV's will be as flexible in the location, I'm sure.  But you can turn up the volume on it so if you're unable to read the numbers while rotating, you can at least go by the beeps.  You'd be moving around a lot more to work the different functions of the unit (go from scan to channel for instance), but it can be done.  In my case, I was able to mount it inside a cabinet in the bedroom where the antenna crank is located, just on the other side of the wall where the TV itself sits.  The TV in our trailer rotates to be viewed from the living area or the bedroom, so once I'm tuned in, I can even rotate the antenna and see the results on the TV itself, which has a signal meter too.  But the Winegard meter is more convienent now.Setting the gain is helpful... where we camp in the boonies, it usually means setting the gain all the way up to 20, but I can see how if you're near a broadcast tower, you might need to lower that to avoid overload distortion.  The gain might be less useful on digital broadcasts than analog... yes, there are still stations broadcasting in analog (near Astoria, Oregon in our case).Installation was no problem, but then I'm handy.  Since I wasn't just replacing the stock Winegard amp that came with our antenna, it meant making an entirely new cutout in a very awkward to work in place, but even if I replaced the stock amp, I would have had to enlarge that cutout to make this one fit.  So be prepared for some work there, or just let a pro installer do it if you're uncomfortable making holes in your RV.