North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: wanted: wireless magic tricks
I believe there are limitations on antenna gain and total EIRP in those frequency bands which would make it difficult - if not impossible - to get any kind of link budget over that distance. I could be wrong, but that's my reading of 47 CFR Part 247(I think that's the correct citation). David Leonard ShaysNet On Thu, 16 Aug 2001, Leo Bicknell wrote: > > On Thu, Aug 16, 2001 at 11:01:54AM -0500, Cerqua, Toby wrote: > > client needs 45Mbps pushed over 20 miles... and he wants it wireless. the > > kicker is that they don't want a T3 because it is "too expensive" and it > > would take too long to get installed. it doesn't need to be constant, but he > > wants to move of 2.5GB within 45 minutes. this is in the chicago area, if > > that helps any. so, i don't know, satellite? > > 802.11a might do what you need. Not sure if it has been standardized > yet, but if not there are a number of proprietary implementations > in the same speed range. It promises 50Mbps with similar properties > to 802.11b. > > 20 miles is going to be a long throw, but not outside the range of > possibilities if you have line of site and good rooftop acesss. You > will need some big antennas though. A site in the middle making it > 2 10 meg shots would be ideal. > > -- > Leo Bicknell - [email protected] > Systems Engineer - Internetworking Engineer - CCIE 3440 > Read TMBG List - [email protected], www.tmbg.org >
|