At 11:45 PM 11/7/01 -0600, Harmon Seaver wrote:
Go tell that to the Seattle/Portland/wherever wireless people. Or the people in rural MN who are putting them up on silos and running a 10 mile radius. Totally depends on your topography. And even with p-p they aren't doing parabolics, more like yagi directionals, which could be just another TV antenna, cut to the harmonic. Gee, maybe they'll start raiding home with TV antennas.
The pages about 'pringle's chip canister yagis' show a piece of plumbing PVC enclosing the final package, a tube about the size of an arm. It doesn't look like a TV antenna, more like the microwave uplinks (Funny that.) from mobile tv vans, though those are usually helical. So the Ghz yagi is readily hidden. The 802.11 hacks claim a good 15 db with a homemade yagi. I think the RF deal is that you can't scale a yagi as far as you can a dish -past some number of segments the yagi doesn't give you more, but a dish keeps on giving (Areceibo for instance...) if you have the space for it and can take the wind.