This is my current setup... I have a 5 LNB Dish with 4 CAT6 Coax feeds going into a WB6x16 Multiswitch. I have 1 HR20-100 2 HR21-100 /w 1x AM21 1 HR22-100 /w 1x AM21 2 H20 Now, I do not currently get locals in HD from DTV so my problem is as follows: I have a nice OTA Antenna setup in my attic now running into my utility room where my Multiswitch is and where all the feeds running throughout the house meet. My problem is I cannot get a 3rd Coax to all the rooms necessary to feed my OTA signal into. One of my HR21's and my HR22 are currently using my OTA through an extra Coax feed I had for this room already and so I simply split the feed in that room to feed those 2 receivers since they are sitting on top of each other. I would like to see if I could use a SWM for the other 2 DVR's so that I can use the second COAX feed for the OTA signal. Do i need to go to an ALL SWM system or can I use the extra outputs I have from my WB6x16 and connect those into a SWM? Not sure how all this works. Of course IF/WHEN DTV decides to give us our HD Locals this will be a moot point. But I want a solution that will not require me to run any more cables. Ohh I also have a HUMAX LCD (with built-in DTV tuner) in the kitchen. I am not sure this thing is compatible with SWM.