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Old August 17th 07, 10:37 PM posted to rec.radio.amateur.antenna
Owen Duffy Owen Duffy is offline
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First recorded activity by RadioBanter: Dec 2006
Posts: 1,169
Default Filtering BPL from powerlines

Dave Oldridge wrote in
:

Barnard Peters wrote in
newsan.2007.08.17.04.49.22.352797 @blueplanet:

Wouldn't it be possible to place a filter at your meter that would
shunt the BPL signal to ground for the whole neighborhood?


Probably not. But a couple of companies, including Motorola have BPL
systems that do NOT interfere with amateur radio services at all. The
problem seems to be getting regulatory agencies to mandate such
systems rather than the sloppy ones they seem to have been bribed to
permit.


Read the ARRL's story on Motorola LV: 'Less than two years after
announcing its Powerline LV Access BPL product, Motorola has decided to
suspend product development and to devote its resources to more promising
markets, industry sources say.' Full story at
http://www.arrl.org/news/stories/2007/04/25/102/?nc=1 .

That is a reduction in focus on Access BPL, and the form with the widest
impact, but that is only one form of the BPL scourge.

Dave, perhaps what you see in me as pessimism is more realism, and it is
born out of working in the telecommunications industry, understanding the
carriage market and the challenges in competetive broadband delivery.

I have also measured BPL emission on the street, analysed measurements by
others and written / reviewed many reports on the impact of BPL
emissions. I have a good understanding of the impact, and the BS of the
'it won't affect me' justication of apathy.

The transformation of ham radio to the province of six hour hams with
their shack on their belt impacts the sustainability of ham radio. They
do not have the knowledge and experience, the credibility to challenge
the threat.

The 'it won't affect me' approach and redneck solutions help to divert
attention from the BPL problem.

BPL might crash and burn of its own accord, and I frequently see people
calling out the failure of a small BPL deployment as evidence, but in the
last few hours I have reviewed a report on ambient noise measurements in
an area for planned BPL deployment in the coming weeks, and the
implementor is no small naive power company business development unit.
BPL remains a serious threat.

Owen