At 21:21 08/07/2004, Pete Turnbull wrote:
On Jul 8, 14:01, Rob O'Donnell wrote:
Most dodgy connection I know of was put in at a
customer ages back..
they
had two separate units on an industrial estate.
Line of sight,
barely,
from back of one, to front of the other, but
about 200M distance,
with
other units and a road and car-park in the way.
You should actually get quite decent results -- much better than
128kbps ISDN -- at that range with even a cheap and cheerful
directional antenna on the AP. You can make most APs work in bridge
mode (which is what you want for point to point), and a cheap AP would
only cost ?60-?100; you can also get cards that can be connected to an
external antenna.
Oh when it was working, it was fine, and certainly a lot faster than the
ISDN. Problem was, we'd never done any wireless before, I was given the
job as: "go there now to fit it; best go pc world for the bits as we've not
got any". and not having had a chance to look into it and source some
decent kit, all I could find in locally available retail stores was some
cheap Belkin access point that wouldn't work in bridge mode (at least, I
couldn't get it to, at the time.) And certainly no directional antennas to
be seen!
The "line of sight" was also very tight ... imagine: (*=wireless)
.-----
*| unit
|__
|__
|
`---
== road ==
-------.
___|
___|
unit __|*
|
-------'
If you extended the back of one unit, and the front of the other, was about
1/2 meter gap. All walls were sheet metal clad. (couldn't get ANY signal
with the A/P inside and me with the laptop outside 1 meter away from it.)
I imagine there were lots of reflections and suchlike as the signal
travelled alongside these walls..