I'm using the alfa networks wifi receiver and transmitter with a trendnet 24" outdoor antenna mounted to the tv antenna (retracts with the antenna but gets the greatest height when parked) I had the same problem a couple of years ago when parked in an rv park, great reception until someone with a big 40 footer parks right next to you and blocks your signal. put the antenna 15' in the air and you don't have that problem anymore. signal comes in from the elevated antenna, through your repeater and re transmits inside your coach. tried a usb wifi, but usb cable length maximums is too short to run that far.