PS 2700A
I recently tested some servos with a PanSat 2700A receiver. It's also
a pretty good blind-scanner.
I'm sure there are other old makes and models out there capable of skew
adjustments in the antenna set up menu, just look for the connectors
on the back. See pic, 5v, pulse, GND.
I never did try the servo/LNB combo on the dish, as I went with a Universal
type C-LNBF, which automatically switches polarities.
Hope this helps.
PS; Right click the pic, open link in new tab, left click pic = close-up view.