I have a chaparral feed horn that has weird stuff in it. I thought when I got it that it was to receive circular polarities with big dish LNBs. You can see the fixed amber butterfly in the C area. Also see the white plastic rod that moves as skew is changed. In the KU section there looks like a metal butterfly that fans out as skew is changed. On the side there are two white screws that appear to center the main stalk. For the KU there are two adjustment screws 180 out that move an amber screw thingy back and forth. I forget where I got it but it had an old Gardiner KU LNB on it. Anybody seen anything like this? I am thinking it is a Corotor II Plus Wideband or Corotor II Plus. Also wondering if the fluffy corrosion inside will affect satellite signals. This fall I want to change to a 10 foot Winegard dish I picked up and figure I'll throw this feed horn on.