I'm vacillating between Freesat and Freeview. The Freeview aerial is no problem as I already have a suitable cable in place. For Freesat I understand that I would need two cables, one for viewing and one for recording. Siting the Freeview dish on the chimney holding the TV aerial presents long cable run problems so what I would like to know is what are the line of sight requirements for a Freesat dish if mounted on a wall on the side of a house.