Can I combine ClearQAM signals from Cable TV with Directv via diplexers? My setup consists of the following equipment: 1 Slimline-3 (not SWM) with 4 coaxial cables going to various Directv receivers. The LCD TV that I want to view the ClearQAM channels has a H23 receiver fed with HDMI. I would like to split out the signals at the end point through the use of a diplexer with one side going to the H23 and the other side to the LCD TV for ClearQAM viewing. Is this scenario possible or do ClearQAM signals share the same frequency spectrum as Directv equipment?