Looking for some answers! I have Buddy who used the above model last summer @ our campground with a B-band converter that Directv sent him and it worked fine. Hooked it up this summer and no go. Good #'s on Sat signal. I hooked my standard HD Model: H23-600 up to it with no B-band converter and I get every channel on MY package. Does he need his Inverter from home to power the Single head LNB even though Direct sent him B-band last year and it worked fine. He also has HD (H25-500). Does this also require an inverter?