I just got upgraded to a hr34 and in the process I got upgraded to SWiM. I have 5 IRDs with dual coax pulled to each one. I thought I was going to be able to use the extra coax pulled to each IRD to put my OTA on. When I tried to hook it up I noticed that both coax cables that are going to the HR34 also go the SMiM. I looked at the back of the HR34 and one coax is fed into a DECA and the other connects to the IRD. Not sure if it matters but the SMiM16 has a 4way and a 2way coming off of it. I can go up there and getter a more correct wiring diagram if needed, my main confusion was why they needed to coax cables for the HR34+DECA (I thought you only needed one coax with SMiM).