Whats the difference between a quad and a quatro lnb? I want to use it for multi room viewing for different receivers. Which is better?. I tried one, its and interstar quad, I noticed after installing it that my fortec star 5100 Ulta does not get signal on some transponders that it use to get. But the Interstar and skysatr2 are ok with it. I checked the lnb settings on the receiver, adjusted and readjusted but no luck. Anybody has any ideas that could help plse?