On Tue, 17 Sep 2002, Joel R. Helgeson wrote: > I am currently designing a Wireless Bridge between Fridley & Brooklyn > Park. The total distance of the bridge is 4.45 miles. We cannot > obtain direct line of site between the two sites without building a > 200' tall tower at the site in BP, but both have a clear line of sight > to a water tower in BP. The distance from Fridley to the BP Water > Tower is 3.88 miles; the distance from the BP site to the Water Tower > is .941 miles. I will be using 21dbi Parabolic Dish antennas at each > site. > > The design I am proposing is to use a passive antenna array atop the > water tower, just take two 21dbi Parabolic Dish antennas and connect > them back to back using a lightning arrestor, having one dish point to > Fridley and the other to the BP office. I've never actually done this before; about half the people I've heard talking about it say it works fine, the other half say that they couldn't get it to work. So, I have no idea. :) Let us know how it goes if you try it. > I figure I could pull this off because of the short distances > involved, and the customer doesn't want to pay monthly rental fees to > put a radio atop the tower (paying for electricity & all), much less > suffer the throughput loss (from 11mbps to 5.5mbps) that one does by > using a radio relay. You could always use two radios.. then you shouldn't suffer any speed loss, right? But, if they don't want to pay for power, that's not much of an option.. (well, unless you can go solar, but then if it's dark for a month, you're screwed. :) -- Nate Carlson <natecars at real-time.com> | Phone : (952)943-8700 http://www.real-time.com | Fax : (952)943-8500