ADTech, good suggestions/recommendations, I always respect your opinion. Probably should have thought of that before now, but alas I did not. The 20' separation is up. As in to accomplish that my bellybutton will need to be above my 80' tower and after I make my way around 7 different receivers/dishes/mounting hardware etc.
So I land in the complicated category.
Now trying to wrap my mind around the 2 HLSJ's. So, your suggesting that the UHF needs this also? I will have a FM filter of unknown capabilities in the KT-500 on the UHF and that will also pass through the High side of the UVSJ, after it is amplified. (certainly not as good as your suggestion) Which I take as a bad thing. I have a similar setup on a 60' tower all UHF without VHF and UHF antenna with the KT-500 is 95% on WDAF/34. So, I have to hope my more powerful new UHF with higher gain peaked on that channel will work. It is all theory for now.