Re: Ethernet and phone line trough mains - someone test it?

["Dan" <dtoma@xxxxxxx>]

> The problem is not the concrete, it's the re-bar.
> Multi-storey concrete buildings have entensive re-inforcement bar
latticed
> within the structure, It's a very effective Guassian cage. I know
several
> residents of such buildings in Glasgow have considerable problems with
radio
> and TV reception also, despite have clear line of sight to the
transmitters.

You're right.. I'm not a native english speaking person...This is what I
want to say..:-))


> I suspect bluetooth may have less problems, as the lower power level
will
> induce less in the way of reflections..
And, maybe, the spread spectrum technology comparing to fixed frequency in
802.11b, so a lot more sensible to pertutbations.

Dan


-----Original Message-----
From: Timothy Morris [mailto:timothy.morris@xxxxxxx]
Sent: 20 October 2002 00:07
To: ukha_d@xxxxxxx
Subject: RE: [ukha_d] Ethernet and phone line trough mains - someone
test it?


802.11 works in my house and that is typical block and brick
construction. In fact the house that we surveyed Mark was built in
1934,
and ALL the internal walls are brick rather than stud, and the network
works across 3 floors and 30 metres with only the odd blackspot.

Tim.

> -----Original Message-----
> From: Mark Harrison [mailto:Mark.Harrison@xxxxxxx]
> Sent: 19 October 2002 21:07
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] Ethernet and phone line trough mains -
someone
test
> it?
>
> Thanks. I guess I'm used to buildings of signficantly
"lighter"
> construction.
>
> Regards,
> Mark
>
> -----Original Message-----
> From: Dan [mailto:dtoma@xxxxxxx]
> Sent: 19 October 2002 20:51
> To: ukha_d@xxxxxxx
> Subject: Re: [ukha_d] Ethernet and phone line trough mains -
someone
> test it?
>
>
> Hi,
>
> Just a simple example... in a concrete building the 802.11b is as
good
> as... nothing...for me
> I cannot operate a peer-to-peer 802.11b network even at the same
floor
> because of the walls.
> The X10 devices work in all the apartments of the building
connected
to
> the same phase.
>
> This is the main reason.
> I almost can say that the low power Bluetooth with a theoretical
range
of
> 10m works better that 802.11b in the same conditions.
> (tested by me with an iPaq H3870 - Bluetooth integrated and a
notebook
> with a Bluetooth USB Mitsumi adapter).
>
> BR,
> Dan




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