Other HD Receiver Support Forum (811, 921, 942)
It is not clear to me if any of your equiptment is Dishpro now. I doubt you can mix dishpro with legacy. If it is all legacy it is supposed to work with two sw21's between the dish 500 and dish 300 outputs. I have found that my 921 cannot find the third sat, if the dish 300 is aimed at 61.5...