Here's a pic of the Trav'ler installed on our 28 ft Ambassador. Installation was rather easy, except that I had to pop down the center, inside skin the route the cables. I got lucky and used the old crank up antenna lead to snake the new cables around the front curved section inside.
The antenna unit fit in perfectly between the front two vents. It works great...unfolds, turns, finds the three sat signals, then 'tweaks' em' in for max signal...way cool! It's neat to watch it even 'slew' the dish for the final tweaking!
We picked up a 22 inch Sanyo HD LCD TV to run off the Sat signals (Dish Net). We don't yet have an HD sat receiver...that's the next upgrade...can't wait to get that HD picture while out in the boonies!
The Trav'ler has the capability to run three separate coax cables down from the antenna...I ran two in case I ever want a 2nd TV.
I'm in the process of upgrading the roof top vents to the Fantastic Fan units from Vintage Trailer supply...the ones that are gray color, with flat covers for AS's. I made myself a label saying "Close Fwd Vent before using Sat Antenna" and attached it to the Trav'ler control box...as the Fantastic Vent covers can open high enough for some possible interference as the Sat Ant swings around!
The actual 'dish' of the sat antenna is quite a bit larger on the Trav'ler units than the ones used in the enclosed domes...so signal strength should never be a problem...unless there's some foliage in the way, of course.
All in all, a good unit if you want the Max Sat signal...not as sleek looking as a dome, but I call it that 'Transformer' look.... Cooool.