I will be wiring my house soon for DishNetwork (maybe DirectV but like Dish better). I am going to use RG6, this is a one story 1950's house with an open ceiling in the basement, so I won't have to go through the attic. I am wondering is there any scenario where I would need the Dual coax cable? When I got Dish in my other house the installer put in Dual coax but that was in like 2004. Thanks in advance.