John Willkie wrote: > The wider the reception angle, the lower the gain. The narrower the > reception angle, the higher the gain. > > Somehow this escaped you in all your years of education? It was covered in > my first or second semester in a junior college program. If you narrow the angle vertically, you can still have gain in all the directions that matter. You really only care about two dimensions for terrestrial RF, after all. This part must have escaped you. :) Mojo -- Morris Jones Monrovia, CA http://www.whiteoaks.com Old Town Astronomers: http://www.otastro.org ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.