[H-GEN] FYI: Internet access via electricity cable system (fw d)

[Ross Camm]

I have worked on simialar systems in the Electricity industry. Data over
powerlines is nothing new and the electricity industry have been using
it for comms and signaling for years. The technology refered to is power
line carriers, where inductive filters are hung at each end of the line,
and are used to filer out a carrier, which has data modulated onto it.
You can sometimes see these filters, up to 8 feet across, and a 6 foot
internaal diameter, with the high tension line going down the centre of
it.

The technology has recently come to the consumer in the form of hot
water switching, and remote meter readings. I have no idea what seqb's
plans are, but its a opportunity waiting, I would think.


						Rossco

> -----Original Message-----
> From:	Michael Anthon 
> Sent:	Saturday, February 21, 1998 3:41 PM
> To:	'Humbug General List'
> Subject:	RE: [H-GEN] FYI: Internet access via electricity cable
> system (fwd)
> 
> That is quite true, but this is not what they are talking about.
> Adding a 
> comms link onto the existing network is no different than sticking
> cable up 
> all over the place.  The page is question was talking about using the 
> actual power cables as the transmission medium.
> 
> 
> Regards
> Michael (sceptic) Anthon
> 
> -----Original Message-----
> From:	Steve Pinel [SMTP:spinel at ssc.qld.edu.au]
> Sent:	Saturday, February 21, 1998 9:13 AM
> To:	Humbug General List
> Subject:	RE: [H-GEN] FYI: Internet access via electricity cable
> system 
> (fwd)
> 
> At 09:15 PM 2/20/98 +1000, Michael Anthon wrote:
> >Errr.. surely they can't be serious ?  It's hard enough getting a
> modem to 
> >work over a twisted copper pair at 56k and they are talking about
> getting
> >1M over open wire power transmission lines?  Gimme a break !!
> 
> There is at least one way around all this, an option I have heard that
> Queensland Rail has talked about using some years back when they were
> tossing up joining in the Pay TV industry.
> 
> Pretty much every High tension cable in the electricity and train
> networks
> has an associated communications cable, sometimes copper and sometimes
> fiber, but always with excess bandwidth going begging.  Now the
> electricity
> distribution network has got a pretty big penetration in Queensland
> (i.e.,
> virtually everyone), and it wouldn't be a particularly bug technical
> feat
> to add on a comms network on top of it.
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