I recently installed a SWM8 multiswitch. I do zero diplexing. I have 2 hr21's and 2 D11-100's. I connected the D11's to the legacy outputs of the multiswitch and used the SWM outputs for the HRs. PI is connected into SWM1 on the switch. All of my boxes are functioning correctly except for this one D11-100. It keeps getting pixelation. I checked the signal levels for 101deg and they are all in the 90's - 100. However when I go to check individual transponders it shows full signal level . IE 92% for transponder 1, then it goes to zero, then back to 91 or 92 then back to zero. It is doing this constantly. A reset of the box doesn't fix the issue. I am assuming it is either an issue with the box itself, (I thought the D11 series boxes rarely had issues) or a bad legacy output on the SWM8 or lastly a cable that has gone bad. Has anyone else had this issue? My next step in resolving the issue will be to take the other D11box and bring it into the same room with the other d11. To see if it is the box or the SWM8. Then Switch the Legacy 1 cable to the legacy 3 port on the SWM. And lastly, which sucks the most, replace the RG6 run.