[Premium-Rx] Broadband Over Power Lines

[Brian D. Comer]

Is it truly over the whole HF spectrum? Current home plug and future
planned in house BPL systems use HF spectrum from 4 to 28 MHz but do not
use the ham bands. Using a general coverage receiver or spectrum
analyzer you would notice the interference absent from the ham bands. I
have no experience of the BPL systems used over power company lines but
I expect from what I know of new in house systems under development, the
interference would drop of very sharply at its band edges. There are
some intermodulation products but they are very small as the modulation
systems need good linearity.

Brian KF6C

  
-----Original Message-----
From: premium-rx-bounces at ml.skirrow.org
[mailto:premium-rx-bounces at ml.skirrow.org] On Behalf Of Gary Follett
Sent: Sunday, January 11, 2004 6:15 PM
To: Martin Colby
Cc: Premium Receiver List
Subject: Re: [Premium-Rx] Broadband Over Power Lines

The info in the web page is all well and good but I am already 
contending with some mystery interference source here in Saint Paul and 
it is far worse than even the worst case scenario for BPL.

What I get is something that sounds like digital spread spectrum. It 
covers all the HF bands with 20 over S9 signals that have duration in 
the range of 3 seconds with a period of 5 seconds. They occur about 
every 10 KHz and are not related to the old 15,525 junk that we 
formerly heard from TV sets. It makes anything resembling "weak signal" 
reception impossible.

It is directional and about 10 times as strong to my north as to the 
south.

Anyone have any ideas? I contacted Hollingsworth and he had heard 
nothing of it.

Gary


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