I have a Winegard Square Shooter OTA antenna that came with a pre amp. One part of the pre amp is in the attic, the other part in the basement. I then take the OTA and put it through a diplexer, run it up to my family room (50+ feet) and through another diplexer to my HR10-250. I recently had my HR10-250 in the basement and connected the OTA up right after the pre amp and the OTA signal strength was much better than up in my family room. I'm having some OTA signal strength problems so I'm looking for any way to improve it. I'm guessing that if I put the pre amp up in the family room the OTA signal would be better up there. Can I go through the diplexers and put the pre amp up in my family room or do I have to have yet another dedicated cable run up to my family room in order to have the prea mp there ?