Oh dear, you are talking way beyond my knowledge. LOL
Everything has been hooked up for months and it has all worked in the past with no problems. Nothing has been unhooked or changed so I know everything is where it's supposed to be.
When we want to watch tv with the satellite, IF I remember correctly (and that's a big IF) all we have done is make sure source is set to Satellite, direct tv receiver box and small Winegard inserter box unplugged and the inserter box button for power not pushed in.
Connect cable to Sat Input on the RV and other end to the dome.
Then plug in the little Winegard inserter box and push button to turn it on. Then it searches for a signal, when it stops making search noise we plug in the Direct TV receiver and then can watch tv.
Now it doesn't search, BUT if I connect the cable from the dome directly to the Winegard inserter box it searches, finds a signal and we can watch tv. I suspect something is amiss with the connection on the Sat Input on the outside of the RV.
I don't know what else it could be. Have proved that it's not the dome because it will work fine if plugged in directly to the inserter box.
We even bought a new RG6 cable in case something was wrong with the one we had.