Not really up on this 100%, but I think only the Pansat 3500 and 2800 can move the polarotor.
Neither can run the big motor that moves the dish.
....arghhhh....!!!
You mention Vbox while I'm composing this???
I thought you said "cheap" ?
Well, I think the first line above still is pertinent.
You've left "cheap" behind, though.