Google invests in power-line broadband

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excellent article

Thanks for the link, this is a good article with facts. Yes, BPL gets an "A" in politics, because it send all the right messages (pardon the pun) to the general public. But it has been shown to deliver only in a very limited way... as scored in the article with a D+ grade.

PLUS, some additional issues which need to be checked as well...

Excerpt:
"When a signal is injected onto a long, unshielded wire at radio frequencies, that wire becomes an antenna, and it radiates the signal. A power line is a long, unshielded wire. When broadband traffic is injected onto a power line, that signal is broadcast. It interferes directly with radio communications operating at or near the same frequencies the power company uses. I say frequencies, because BPL today uses multiple carrier frequencies to try to raise its level of reliability.

The HF frequency spectrum -- from 3MHz to 30MHz -- and the VHF spectrum - 30MHz to 80MHz -- are the two that would suffer the most interference from Access BPL. These spectrums are used by thousands of public safety agencies: police departments, fire departments, and emergency medical services. They are also used by the military, by government entities at all levels, by ships and planes, and by many other licensed users. The communications of all of these critical functions would be subjected to the interference generated by Access BPL. "

Posted by: PVkWatts   Posted on: 07/07/05 You are currently: a Guest | Members login | Terms of Use

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