Another site on this topic:
http://trevormarshall.com/biquad.htm dold@XReXXTryin.usenet.us.com wrote:
> Jeff Liebermann <jeffl@comix.santa-cruz.ca.us> wrote:
> > Try adjusting it to 0 degrees. Either the arm that holds the LNB
> > hits the vertical pipe mount, or the dish hits the pipe. Just because
> > the markings go to zero, doesn't mean the mount will work at that
> > angle. I have seen odd mounts that will depress to zero. One can
> > also be fabricated from pipe parts.
>
> I was going to mention that there didn't seem to be enough clearance around
> the "0" mark to actually secure the bolt at that point. It occurs to me
> that one might mount the dish on a pole at a 45 degree angle. Then the
> scale might neatly be -45 to +20. I still don't know what the
> recommendation for 20 degrees would be, unless that yields an elevation of
> zero with the dish mounted upside down.
>
> Jeff seems to be on an odd bent today. Rather contrarian than helpful.
>
> --
> ---
> Clarence A Dold - Hidden Valley (Lake County) CA USA 38.8,-122.5