I had the Hopper and a wireless Joey installed a week ago. At first the installer was unhappy with the signal strength, around 35-40 if I remember correctly. We were able to elevate the Joey about 3 feet to the top of hutch, and the signal strength improved to around 45. Thursday I got spotty reception (pixelating, freezing). So I elevated the sending unit attached to the Hopper and the signal strength went to 50. No probs after that. While the straight line dist from the sending unit to the Joey is about 15-16 feet, there are 2 walls, a door, and a metal chimney flue between the units. BTW, the installer wanted me to go with a wired Joey the moment he saw the first signal reading. I don't blame him. I'm sure he would catch a ration of crap if I called later to complain. But elevating the Joey temporarily solved the problem. Next test will be to move the Joey to the front bedroom when the grandkids come....