I have a pretty decent and new satellite dish on my roof (Direct TV) but have no receiver in use. It was still technically connected to my cable lines and I found RF signals all over that section of the house.
There was no receiver connected (other than digital comcast boxes which doesn't work that way I believe). As soon as I disconnected the coax from the dish it stopped the RF signals.
My question is could a Dish on a house be used to send a signal as well as receive? If so what could it be used for?