Well all I can say is if I don't have my dish positioned precisely, I can't get 11720 up here in Canada. I haven't made a trip on the roof all winter, so maybe its out a bit. I also fabricated a multi lnb holder last fall and maybe haven't worked the bugs out. 11720 has always been an issue for me. I use to get it not bad on clear days, but for the past 6months nada. 11799, has been ok, but nothing fantastic.