Re: wanted: wireless magic tricks

["M. David Leonard" <mdl () equinox shaysnet com>]

        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 - bicknell () ufp org
> Systems Engineer - Internetworking Engineer - CCIE 3440
> Read TMBG List - tmbg-list-request () tmbg org, www.tmbg.org