Winegard did confirm that the satellite signal does not play well with their electronics (even with power off). This is what they said today...
"a simple solution for the customer that wants to connect a satellite to the park cable, would be to disconnect the park cable from the back side of the antenna power supply (booster), connect that cable to the satellite receiver. Then run another cable from the receiver to the same spot on the power supply. They will then have to turn the power supply off to let the satellite signal go through."
PLEASE do not send questions via Private Message, my inbox fills up too quickly. Post questions in the forum as a new thread so that other users can benefit from the answers. Use Private Messages for sensitive information only (VIN, Contact info or things you do not want the public to see).