Hello,
The problem with BPL is that it is really noisy electro-magnetically (meaning radio waves), and could interfere with AM, Ham Radio, FEMA (Federal Emergency Management Administration), Citizen's Band, and Military communications.
BPL in the United States, so far, is destined to splatter anywhere from 1 - 80 MHz with noise on poorly-shielded cables. This means that this noise will interfere with radios, and when someone transmits in your neighborhood, it will interfere with your BPL connection.
It really is *crappy* technology that can potentially destroy the communications freedoms Americans have had since the development of radio in the early 1900's. And because signals below 30 MHz like to bounce around in Earth's atmosphere (signals below 30 tend to reflect back to the ground... for example, you could not use a CB @ 27 MHz to talk to someone on the moon, even if it was right on top of you, whereas 140 MHz would work just fine) with all the bouncing around, we are going to pollute other countries as well.
This is like light pollution vs. the backyard astronomer who wants to look at stars, because the empty Stadium a few miles away has their lights on (for no reason) and the glare kills the view.
This BPL also stands to put Neighbor vs. Neighbor because someone is going to transmit, and cause your computer to not respond. But the transmitter has a license; you don't. Yet you do not understand the legal responsibilities of the technology.
And I certainly hope that your neighborhood network doesn't confuse an airline radar, and you have a 747 hit your swimming pool.
This technology has been banned in other countries; yet the blind political gang will not adhear to the science.
For more information:
www.arrl.net
www.eham.net
Look for the BPL articles.
Christian
Amateur Radio Operator KC0ARF
Unsolved 
http://cbs.marketwatch.com/news/stor...le&dist=google
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