Do you looking for a device that will give more TV stations? Is so, I don't think Slingbox will do that (someone here correct me if I'm wrong). I belived Sling Box is designed to send TV broadcasts from your home TV to a multitude of mobile devices to see what your home TV is tuned to, like if you wanted to watch your home baseball team while you are away from home, the Sling Box would send the signal to an iPhone, iPad, etc. I don't think the Sling Box will receive any more TV stations by magic.
I have a disabled friend in a nursing home that has very limited TV stn choices, with no hope of more. Is Sling Box the solution for him?