In case you missed it, here's some of what went on at our SOCALWUG meeting last Thursday. http://www.socalwug.org/august_25th_2005.htm
Slides from Dr. Marshall's informative presentation are posted here: http://www.socalwug.org/marshall-ppt0805/index.html Pictures of the 125 mile shot and Frank's video are posted here: http://pasadena.net/shootout05/ I'm most curious about the antenna feed alignment. In one of Frank's photos, the feed looked about 12 inches out of alignment with the dish "sweet spot". Perhaps the perspective on the photo is distorted, but it sure looks crooked! http://biggahertz.mit.edu/slideshow_4.html?8 If it was off by 12 inches (that would be 3 wavelengths at 2.4 GHz) then Dr. Marshall's chart shows antenna efficiency of something like 20%. Still, the link worked! But maybe the dish could have been smaller with the feed in the right place. http://www.socalwug.org/marshall-ppt0805/img7.html -Mike
