"Geoffrey S. Mendelson" wrote in message
...
In article , Amos Keag wrote:
ARRL has recently reported quite acceptable compatibility results in
some BPL programs they have been testing.

I forget the details, 68 years old and suffering from occasional 'old
timers disease', but the info should be available from ARRL.
It is possible that acceptable BPL technology has arrived!

No.
It's acceptable to the ARRL ...

Geoff.,

Your words not theirs. "They" (I'm in contact with "them") have
reservations and are aware of the outside-notch problem.
The advantage of this system (I'm not saying it's the solution or even a
great idea, but an attempt to provide an alternative in light of the
relentless push to do it regardless of interference potential) is that is
takes less energy to get from the pole to the house than down the whole
medium voltage power grid. The HomePlug(tm) protocol will be / is in homes
already, so even without this style of BPL, the garbage'll be in the air --
and not necessarily with the limited protection mechanisims (for HF users)in
this system.. It's an attempt to find an approach to satisfy both sides,
which no one else is attempting to do, including the his Ignorance at the
top.


...because they "notch out" the ham bands. This
means that it interfers with everyone except ham radio operators so they
wash their hands of it. ...
... If they bother at all, an engineer will take a portable radio to
the site, pull up the antenna and listen.

There are much better solutions in the works... Again, I'm not a
proponent, just saying there are those who are trying to minimize the
problems with an, unfortunately, inevitable thing.

The thing here is that Motorola at least kept in contact with one of the
groups opposing BPL rather than just ramming it into a power grid and
totally iognoring all reason/physics, even appropriate complaints.

...If he does not hear English,
he'll log that there is nothing to prevent them moving the notch
there and that frequency will be used.

You mean if he DOES here Engilsh he will move the notch there and
the frequency will NOT be used? The notches go where the turned-off
carriers are so the residual energy gets attenuated even more.

No argument with the rest of this. BPL is an unfortunately ignorant
approach to a non existent problem.

Interesting that the article ignores the foreign systems which were shut
down, but then they were only given the party line...

'nuf said...

73, Steve, K,9.D'C;I
Yes, you guessed who I work for and what I have knowledge of...

This is called the boiled lobster effect.

I thought it was a Frog ? ! and I call it de-regulation.