I'd recieved a BSC 621 from Sadoun, great folks there. Just yesterday I'd mounted the unit on a 10' dish I'd salvaged. The C band portion of the unit has been operating very well, some signals have gone up 25-50% more, switching from a 5' to a 10' dish. The C band portion of this unit seems to operate as well as a ASC 421. The Vertical portion of the Ku side was returning signals as high as 90% on G10R. I've been having some trouble receiving the Ku Horizontal signals. The tech rep. with Sadoun has been away, so I called DMS International and they suggested I check the scew and dish pointing. The scew and dish pointing are fine. I've spent a half day today trying a number of adjustments with the unit. The Ku side is recieving Vertical signals, listed at Lyngsat, as Vertical, while the C band side is recieving Vertical signals , listed at Lyngsat as Horizontal. I feel that the Ku LNBF is 90 deg. out of rotation from the C band LNBF. Its a nice unit, but I'm puzzled by the problem with the Horz. signal with the Ku LNBF. We've discussed issues combining Ku and C band wave guides, not an easy matter.