Hi, my set up is a Visiosat BIsatellite, 75 x 64cm dish, on the roof at a height of about 17m in front of the dish there is a kind of a rail with the 4 LNB's, Astra 19.2E Astra 23.5E, Astra 28.3E and Hotbird 13.0E from these 4 LNB's the signal goes to a disecq which switches to the needed...