On 17 Aug 2005 09:55:16 -0700 wrote:

| The "notching" solution is simple: Their BPL system does not use
| frequencies that are also ham bands. Whether it works or not is an open
| question.

What about MARS and SWL frequencies?


| - BPL is a "last mile" delivery method, not a complete system. Still
| needs a 'head end'

I've seen pictures of these units on primary (12 kV) lines, so by
"last mile" this must mean more than just the drop into the home.


| - BPL bandwidth is shared between users on the same line, so as your
| neighbors sign up and use the system, your performance degrades.

On what line? The primary (12 kV) or the secondary (120/240 V)?


| - There are other technologies (like Wi-Fi) which can do the same job
| without all the fuss and bother.

These are on 12cm and 5cm from what I have heard.


| - The big danger of BPL is that it turns the whole idea of spectrum
| protection and allocation upside-down, and sets a bad precedent.

It can also be susceptible to ham transmissions, which will unfairly blame
the ham radio operator as the cause of networking failures.

--
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| Phil Howard KA9WGN | http://linuxhomepage.com/ http://ham.org/ |
| (first name) at ipal.net | http://phil.ipal.org/ http://ka9wgn.ham.org/ |
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