You would have 2 dishes to aim at 2 different satellites. Old school way of doing it as now they use a larger, more oval shaped dish.

If they are as I suspect the 2 dishes should connect together with a switch.

With Dish Network you need 2 dishes in some locations to receive the HD channels and for local channels in HD you need the antenna.

And some installers may not remove the previously dish. I have two, one was left by a previous owner and one is mine.

The installer refused to remove the previous one and I am too old and unsteady to climb up there anymore.

BTW, FWIW etc. I love my Dish Network DVR but their installation and customer service, in our area anyway, is perhaps the worst of any utility I have ever used. Really, really bad!