Man - this one is pretty doggone strange.
If I had the opportunity, I'd be swapping parts with the neighbor to see when the problem moves. I don't know how well you know the neighbor, but maybe try to run that 100' RG-6 you bought over to his dish and see what happens, other swapping as needed to narrow it down.
If I had the opportunity, I'd be swapping parts with the neighbor to see when the problem moves. I don't know how well you know the neighbor, but maybe try to run that 100' RG-6 you bought over to his dish and see what happens, other swapping as needed to narrow it down.