I am haveing problems setting up my directv dish after I moved from one zip code to another, 32219 to 32205. I purchased a birdog usb plus 4.0, an ALS-1. I have the system setup identical to my previous install. I have researched aligning the dish which is a slimline LNB 3 SWM, but only can find info for aligning an LNB 5 SWM. I get readings only in the 80's and nothing on my receiver, what am I doing wrong or not doing? What is dithering? Any would be appreciated, want to be able to take my Directv HD camping.