arkhillbilly, my fifth wheel had a similar setup. I had to connect the satellite to a separate connection. First time using the satellite, I learned the antenna switch had to be "off" for the satellite to work. Then I used the TV remote to change input from antenna, to wherever your satellite input connects to the TV (HDMI, A/V, or whatever). Then go through the satellite box to find channels.
2016 Jayco 36RSQS
2015 GMC Denali 3500, dually, 4X4, Duramax diesel, 6 speed Allison transmission