RE: Real world 802.11x distances

["Phil Harris" <phil@xxxxxxxxxxx>]

> -----Original Message-----
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx]
> On Behalf Of Hawes,Timothy Edward (GEG)
> Sent: 01 July 2005 07:21
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] Real world 802.11x distances
>
> Hi David,
>
> This is interesting as Kingspan / Celotex are often cited as
> wireless killers. I haven't tested with either of these
> materials directly, but have done a similar sort of test with
> "b" kit (Fuji with gold Orinoco card and Linksys WAP11).
>
> At work we have metal storage lockers above the desk in each cubicle.
> These lockers are at around chest height and made from
> approx. 1mm steel sheet. We put the WAP11 on top of the
> locker and wandered away until the signal disappeared. This
> was around one corner (cast concrete wall with
> rebar) and about 25m away. Next we put the AP inside the
> locker and closed the cover. The distance before drop-out
> then reduced to about 20m or so. These distances are approx,
> but the key point is that we didn't see a great deal of
> difference between the two tests.
>
> What I find interesting is that the metal sides of the locker
> are much thicker than the foil on Kingspan etc. yet we saw
> only a ~10% drop in range.  Now I don't disbelieve people
> when they state they get poor WiFi and GSM reception in
> foil-insulated buildings - I'm just trying to understand
> what's different between the insulation scenario and a
> completely enclosed steel box.
>
> Can anyone explain the difference?
>
> Thanks,
>
> Tim.

[Sucks air through teeth in a "you ain't gonna believe the size of
your
bill" tradesman styleee]

"Ahhhh ... that'll be your cheap imported foreign metal against proper
English metal then won't it?"

:hehe:

Phil