I thought I had read enough to finally attempt to install my new HR21-100. I bought a new one, as well as a new 5LNB SWM for my SlimLine dish. So today I tweaked my dish BEFORE swapping the old LNB and my H20 receiver. My understanding is that with only one DVR, only the power inserter is needed, according to the instructions that came with my PI-21 inserter. The inserter port labeled "Power to SWM" goes to my SWM 5LNB using RG6 through a grounding block, and the port labeled "Signal to IRD" goes to the one labeled "SATELLITE IN 1 (SWM-2)", also with RG6. Access card was inserted, I powered everything up, but during setup, all signal levels were 0 on all satellites. I rechecked my cables, measured the voltage at the LNB (20.45V). The only thing I'm not 100% sure about is if I used the correct port on my HR21-100. Could it be that I'm unlucky enough to have a bad LNB? Is there a way to check it? The cable lengths (approx) are as follows: Power inserter to LNB, about 30 ft. Power inserter to DVR, about 80 ft. I'm at a loss right now, so I'm going to change back to my H20 & old LNB until I get some answers.