I tried to get the SNH-031 to work on a Channel Master .76 oval dish (Dish use to be for Starband internet service) but I didn't have any luck. Is this LNBF better with a round dish or is it suppose to work with oval dish too? I had a spectrum analyzer and I know with the dish's own feed horn I was on a satellite then when I took the feed horn off and put the Invocom in place by holding it in place I could not see signal on the scope. Is the focal different to cause this? Any suggestions or comments?