From: Declan de Lacy Murphy (decdelmur at domain iol.ie)
Date: Wed 22 Aug 2001 - 20:26:39 IST
Thanks for the info Wesley,
I am very interested to hear how well you managed to get the signal through
obstacles. The impression that I had got was that 2.4Ghz was very poor at
getting through obstacles. I even read that a tree in the line of sight
would completely block out anything but a very strong signal. Funnilly
enough it was on a web page selling RF amplifiers. Roughly how many feet do
you know was your unit and base station apart? Do you know do the buffallo
cards give the full 100mw output?
I really appreciate the info.
Declan
PS If anyone know where I can get cheap 2.4ghz RF amplifiers or how I might
make some then I would appreciate the tip. :-)
----- Original Message -----
From: Wesley Darlington <wesley at domain yelsew.com>
To: <ilug at domain linux.ie>
Sent: Wednesday, August 22, 2001 12:43 PM
Subject: Re: [ILUG] [ot] Wireless Networks
> On Tue, Aug 21, 2001 at 03:51:02PM +0100, Declan de Lacy Murphy wrote:
> > We will be using 11 megabit cards. (roughly 1 megabyte) The actual
transfer
> > rate will depend on factors including distance, weather conditions etc.
We
> > are expecting that over the 1 mile range for all the people allready
> > involved that we should get about half of the 11 Mbits. Were you using
the
> > inbuilt aerial on the buffallo cards. We definately will not be using
the
> > inbuilt aerials as I understand that they only designed for line of
sight
> > over a few metres.
>
> They don't require line of sight and they work very well into the tens of
> metres. My buffalo card speaks happily to my apple base station through
> two (wooden) floors, two (plastered) ceilings and a (plastered brick)
wall.
> I imagine I could get up to and beyond the theoretical limit in the
> open air.
>
> Most cards have a wee hole at the end for plugging in an external antenna.
>
> > We are planning to run cables to the roof where we will
> > mount proper aerials. The model we are looking at is only 20 inches long
but
> > gives 9dBi, although we might end up using directional antennas with
double
> > or triple that output.
> >
> > I would be interested to hear about your setup with the buffallo cards.
> >
> > We will probably at some point get in a leased line for internet
connection
> > and share it across the network.
>
> Cool! And the very best of luck! :-)
>
> Wesley.
>
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