[Fists] BPL

[Trevor Jacobs]

Hi Ralph,

The big difference between BPL and other modes of broadband, is that BPL
uses RF to transmit high speed data down the unshielded power lines.
Unshielded Power Lines make an awfully good antenna. Also, It's not a small
spectrum of RF. It will encompass our entire HF spectrum, from just above
the AM broadcast band up above HF into the low VHF range. FEMA and NAB have
already file complaints based on this likely interference. for an example of
how this would sound on your radio, go to this web page and watch the movie
that Ed Hare W1RFI put together:

http://www.arrl.org/tis/info/HTML/plc/#Video

It's a very real threat, and I don't think that any of us would want this
type of interference in our areas.

73's Trev - KG6CYN
http://www.qsl.net/kg6cyn
FISTS# 7814
----- Original Message ----- 
From: "Ralph Sutton" <zl2aoh@ihug.co.nz>
To: "Fists North America" <Fists@mailman.qth.net>
Sent: Thursday, February 05, 2004 2:20 AM
Subject: [Fists] BPL


> Re the BPL controversy.
>
> At present data transmitted through phone lines or "so called" wireless
> connections doesn't seem to impinge on amateur HF transmissions.  I am a
> true amateur as far as technical matters are concerned, so I consulted a
> friend who had a career in radio.  He explained that the problem with BPL
is
> that the cables are not screened, so that data transmitted through that
> medium will radiate.  To me this did not seem a logical explanation as
even
> though nowadays with optical fibre transmission and underground cabling
> there is a high proportion of unscreened copper wire above ground and for
> house connections.
>
> Perhaps one of our more learned FISTS members can tell me if I am wrong
and
> if so what is the problem with BPL? Or is this another example of the
> scaremongers art like cellphone towers supposedly causing awful illnesses.
>
> Vy 73 de
>
> Ralph Sutton ZL2AOH
> 12c Herbert Gardens
> 186 The Terrace
> Wellington 6001
> New Zealand
>
> Tel:+64-4-473-0847
> Fax:+64-4-473-0848
>
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