[ILUG] [OT] Power Line communications ?

[Geoff Moore]

There are numerous utilities (started in the US but I'm pretty sure it's
being trialled in UK too now) that are reading meters through several layers
of substation but (as I mentioned earlier) they're having to use "magical
DSP technology" and the data rates are measured more in bits per hour than
Mb/s

If you're reading someone's meter it doesn't matter that you're reading so
slowly 'cos you only read it once a month or less.

Geoff
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Straight Forward Solutions Ltd
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Phone : +353 (0)45 892739
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====================================

> -----Original Message-----
> From: ilug-admin at linux.ie [mailto:ilug-admin at linux.ie]On Behalf Of Niall
> O Broin
> Sent: 15 January 2002 9:17 AM
> To: ilug at linux.ie
> Subject: Re: [ILUG] [OT] Power Line communications ?
>
>
> On Tue, Jan 15, 2002 at 04:13:21PM -0000, Declan Grady wrote:
> > Anyone know if this is feasible ?
> >
> > www.ds2.es
> >
> > 42 MBit/Sec over your power line ?
> >
> > Makes very interesting reading, but I cant understand how it
> could work ..
> > surely it'd be like having every 'net user in the country on
> the one pieces
> > of thinnet ?
>
> I recently read an interesting article on this very topic (I
> thought it was
> in Wired but I looked in the only copy of Wired I have to hand
> and it wasn't
> there). Basically, as someone else mentioned, the big problem here is
> transformers which act as wonderful bandstop filters for the data
> frequencies.
>
> The subject of the story had amanaged to convince some very heavy
> hitters in
> the U.S. that he had the transformer problem cracked. Despite the
> scepticism
> of his technological peers he managed to extract some serious money from
> various people, encouraged by said heavy hitters. Unfortunately
> the laws of
> physics had their evil way, as they do, and lots of people got pains in
> their hips.
>
>
>
> Niall
>
> P.S. 42 MBit/Sec ? Isn't that very close to 45 MBit/Sec ?
> Remember when the
> last snake oil vendor tried to sell us that ?
>
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