[KL7AA] [Fwd: Mains Communication Interference.]

Wed, 10 Apr 2002 17:37:31 -0800

This does not sound good.

Jim

-------- Original Message --------
Subject: Mains Communication Interference.
Date: Wed, 10 Apr 2002 23:13:43 +1000
From: Graeme Zimmer <[email protected]>
Reply-To: [email protected]
To: Low Power Amateur Radio Discussion <[email protected]>
References: <[email protected]>

Hi,

I was reading my April copy of Circuit Cellar, where I was horrified to
read
a rather glowing report of the "Home Plug" power-line communications
system.

This is a wideband digital system which uses 83 subcarriers spaced every
200
Khz from 4.5 to 20 Mhz.

Due to the impossibility of preventing signal leakage from the mains, it
will likely make life for Hams and SWLs very difficult.

The article was written by Tom Cantrell (email [email protected] ) who is
the
West Coast Editor of Circuit Cellar Magazine.

Tom seems to be a nice bloke, and a very capable engineer, but he
doesn't
seem to have a clue how nasty these systems could be to our hobby.

If you receive Circuit Cellar, you should carefully read the article and
then send Tom an email telling him how you feel.

If you don't get the mag, some alternative details follow (please read
them,
then write to Tom).

Interesting submission from the RSGB is at
    http://www.bbc.co.uk/rd/pubs/whp/whp-pdf-files/WHP013.pdf
and from the BBC is at
    http://www.qsl.net/rsgb_emc/emcplc.pdf

BTW, details of  Home Plug is at http://www.cebus.org/HomePnP.html

regards ........... Graeme Zimmer .......... VK3GJZ