Getting the antenna for OTA or sat. always seems to be a bit of trouble as there is often a hidden switch to turn on the amp or not for use on cable. It is often a tiny switch on a coax plate hidden in one of the overhead compartment like over the passenger.
That left me doing a bit of search on the parts drawings here:
https://catalog3d.winnebagoind.com/menu/Parts.htm
Random guess without knowing exactly which build you have but I found a switch that looks suspect and you might want to check it?
Over driver's side, there is this switch listed as "switch satellite stationary if you have option 78K!
Also find this which is on right side and labeled satellite power!???
So one or the other might help???
__________________
Richard
Why no RV year, make and floorplan on MY signature as we suggest for others?
I currently DO NOT have one!