At home I have a VIP722 looking at 61.5 and 72.7 working fine. I was thinking I could just take my receiver camping and set up a portable dish using 2 old single LNB dishes to catch both satellites. I tried this with a sw21 and the receiver only detects one satellite, the other says wrong sat on the on screen signal meter. From what I have read, I can only use 1 sat input of the 2 with single LNBs, but the combiner from my 1000.2 was still attached to the back of my receiver to both inputs during my test. Is the SW21 the incorrect item to use for this? Also, could I just use one single LNB dish to receive SD only channels and if so, which satellite would I need to point to? thanks