[no subject]

This is all borne out in practice. In Cincinnati, the Current Technologies
system passes about 60,000 homes at this point. There have been no reports
of harmful interference to the Amateur Radio Service from Cincinnati hams,
and the locals have organized a pretty good team. I have been to Cincinnati
and have personally looked at things and I concur with myself that mobile
operation is protected.

In the rather dense suburban areas where BPL is deployed there so far, the
protection offered by the HomePlug notching is apparently adequate in the
moderate noise environment of the area. There is no doubt that if this were
deployed in a more quiet environment, the ham next door would see some
interference, but that is just like your neighbor's TV vis a vis your
"legal" 50-milliwatt harmonic. Based on calculation and experience in
Cincinnati, those cases should be a small enough number that it is practical
to fix them as they occur. (Just as one example, in this low-noise
environment, BPL could be operated at a lower level.)"
</quote>

w1rfi@xxxxxxxx wrote:

>> You might be better served to research what has been posted here on this
>> topic before letting your knee jerk you into deep waters.
>
>Is that one of those do-as-you-say, not-do-as-you-do sort of things?
>You were pretty clear  that you hadn't researched ARRL's web page or
>position in months, yet you knee-jerked yourself about it in a way that
>was rather painful to watch, I would say.
>
>> I'm glad to see that the ARRL no longer opposes all BPL. In fact the
>> statement by the ARRL CEO that you cited makes many of the same points that
>> I made here in October 2004 when the FCC first gave its blessing to Access
>> BPL.
>
>ARRL has never opposed BPL, so your soapbox oratory falls apart rather
>quickly.  As an example, long before access BPL was viewed as a viable
>technology, ARRL was helping HomePlug in the development of the very
>standard that Current Technologies has used in its successful
>deployments.
>
>http://p1k.arrl.org/~ehare/rfi/HomePlug/HomePlug_ARRL.pdf
>
>You might be better served to research what has been posted by ARRL on
>its web site about BPL before letting your knee jerk you into deep
>waters.  Oh, wait, that's what you said...
>
>> I even cited the NTIA study.
>
>Did you cite the part where NTIA said that at the FCC emissions limits,
>harmful interference was probable for hundreds of meters from a power
>line carrying BPL, or for tens of kilometers to aircraft?
>
>> I also opined that the ARRL was "shooting itself in the foot" by opposing all BPL. It's good to see that
>> you folks have finally caught up with me.
>
>Are you now saying that you believe that access BPL should not be
>permitted to operate below 30 MHz on overhead power lines and that it
>should not be permitted to use the Amateur bands?  If you really
>believe that ARRL has "caught up with you," that is our position.
>Surely you wouldn't have said that without doing the research you
>chided me to do... would you? :-)
>
>The bottom line is that BPL that operates at the limits of the present
>rules will cause strong interference locally on any spectrum it uses.
>Those "legal limits" are high enough that, according to the NTIA report
>you cite, interference for distances greater than typical receivers are
>located from power lines is likely.
>
>Nothing in ARRL's position has changed with respect to noise levels
>that cover up all but the strongest of signals locally. Nor should it.
>What has changed is that part of the industry is committing itself to
>operating well below the FCC emissions limits in the Amateur bands. Why
>you would believe  that such a change somehow represents anyone
>"catching up with you" is absolutely beyond me.
>
>> Since "Woodie" cited incorrect figures, I guess that makes him an ill-informed ham. ;)
>
>He was incorrect. If you feel you need to call that "ill informed" for
>some reason, I see no need to dissuade you.
>
>> I couldn't resist that but my "beating a dead horse" ploy was meant to bait
>> the ill-informed hams who attacked me here in October of 2004.
>
>At least you are willing to admit it. Good for you.  Baiting others
>publicly is something that most people wouldn't do, and fewer would
>admit to.
>
>> Now that your CEO is saying the same things I said I guess they'll have to direct their
>> flames at him. ;)
>
>Some of them have, although most understand the reasons that ARRL can
>be in opposition to rules that simply don't work for BPL and radio
>services' mutual compatibility and recognizing and, to some extent,
>supporting those companies that do it exactly the way that ARRL's
>petition asked the FCC to mandate for all BPL systems.
>
>If you want this industry to be successful, you would try to get it to
>support successful rules. If you just want to bait people on a
>newsgroup, that's entirely different.
>
>> Would you care to comment on this...
>
>>  http://www.danielwoodie.com/currentresponse.htm
>
>I think that my original post addressed pretty accurately the degree to
>which Current's design prevents interference to Amateur Radio and the
>fact that it offers no additional protection over the existing rules
>(and NTIA conclusions about interference distances) for other spectrum.
>
>Ed Hare, W1RFI
>ARRL Lab