take 2 splitters at the back of the reciever put your tv2 jumper to one of the outputs, then a jumper from the antenna port in the other output, go into your diplexer like normal, on the other end reverse the splitter so the line goes from the wall to the input and then run a jumper to the tv from one output, and put the antenna on the other output, will work as if the second tv is right there next to the reciever
This is CABL.com posting #195268. Tiny Link: cabl.co/mYXE