QUOTE (from Jim, W6YA): " When trying to get help for the pool pump noise I
was told by FCC that "I can still use my radio." Ask me
why I'm bitter
toward FCC. Complaints have become futile."
I'm with you Jim! And we have ARRL doing what FCC should be doing.
Members of ARRL are paying out of their pockets twice, once to ARRL, and
again, through our tax monies to the Feds. But at least ARRL has the
serious ear of FCC.
I've spewed enough venom on the solar issue on this forum, so that's all
the venom for today.
And how does one (FCC, specifically) quantitatively define "harmful
interference" in terms of solid engineering terms? I don't believe that is
possible and varies on a case-by-case basis as we've experienced from the
solar power industry as a whole (yes, SE seems to be the least
responsive). In these days of digital everything, field strength is no
longer appropriate to assess interference potential. Nor is the "QP (quasi
peak) 'averaging'" in an attempt to equivalence field strength to
interference level. I propose the measurement techniques and the whole
philosophy of assessing "harmful interference" be revamped to accommodate
emissions from all the switchers and digital RF generators in existence
throughout every home in this country.
Only earlier this week, I read where the major consumer vehicle
manufacturers are seriously considering eliminating AM radio from their
vehicles. Why? Because the RFI produced by the electronics of electric
vehicles produce too much RFI. This RFI renders AM reception in the
vehicle impossible. I read this story on several major news feeds I read
every day online. So, where is FCC in this respect? The problem is well
known. It appears FCC is ignoring this further incursion to our RF space.
There are regulations in place from FCC that specifically apply to
vehicles. Is this destined to become yet another solar power problem to
which FCC turns their back?
But I promised no more venom. I'm trying to be polite and state the facts.
(Editoralizing): The handwriting is on the walls, everywhere. HF is doomed.
Dave - WØLEV
On Fri, Dec 16, 2022 at 5:03 PM Jim McCook <w6ya@cox.net> wrote:
> It's interesting to hear that Solar Edge *is* actually radiating from
> the house wiring, if only in part. It's still radiating from house
> wiring, so who knows where the main source of that interference is at,
> say, a distance of 500 feet? I have lost all support by Solar Edge for
> the huge numbers of interference sources that now come from all
> directions. We had reasonably good support before TJ was promoted.
> Then, nothing. I can't even count the number of SE interference
> sources. I've tracked some from over 1500 feet away.
>
> Besides the many sources of non solar HF interference we identify coming
> from homes, I still struggle with noise from a pool pump next door that
> uses a multispeed DC motor. Besides the radiation that can be seen at
> the power supply (obviously switching) I tracked that noise all through
> the house with the usual hot and hotter spots adjacent to house wiring.
> Yet I was told that there is no support for such interference under 30
> MHz. It clearly radiates from the house wiring "antenna." Another
> adjacent neighbor is in the process of putting in a swimming pool, so I
> can hardly wait to see what new interference will appear that will not
> be addressed by FCC because of its "rules." When trying to get help for
> the pool pump noise I was told by FCC that "I can still use my radio."
> Ask me why I'm bitter toward FCC. Complaints have become futile.
>
> 73, Jim
> W6YA
>
>
>
>
>
> On 12/16/2022 7:53 AM, Hare, Ed, W1RFI wrote:
> > As near as ARRL's work can tell, the interference from Solar Edge
> > equipment is not being significantly radiated from house AC mains.
> > W1VLF has used a probe to sniff the wiring of a Solar Edge system at
> > his house and found that the emissions from the solar-panel wiring
> > were much greater than the emissions from the AC mains.
> >
> > We do NOT want to hang this issue on compliance with the Part 15
> > emissions limits because if the FCC were to see that as the line in
> > the sand on harmful interference, then systems that comply with the
> > limits would be pronounced to be clean by the FCC and cases would be
> > closed. To file a complaint about emissions limits, amateurs would
> > have to make measurements, which in the case of a multi-kW inverter,
> > would be well beyond the ability of even most test labs.
> >
> > Cases of interference from Part 15 and Part 18 devices are being
> > resolved on the basis of harmful interference.
> >
> > For lower-powered consumer devices, we DO find devices that exceed the
> > limits, and ARRL is setting out to obtain and measure more of these
> > devices and report them to the FCC. If a device exceeds the limits,
> > then that is a rules violation even without the presence of harmful
> > interference. Our AM-broadcast connections are very interested in
> > this, because many devices that meet the limits on 1.8 MHz and up do
> > not meet the limits in the AM broadcast band. Those that fail on the
> > AM broadcast band also fail on 630 meters, which ARRL does have
> > standing to form the basis of a complaint.
> >
> > Ed, W1RFI
> > ARRL Lab
> >
> > ------------------------------------------------------------------------
> > *From:* RFI <rfi-bounces+w1rfi=arrl.org@contesting.com> on behalf of
> > Jim McCook <w6ya@cox.net>
> > *Sent:* Thursday, December 15, 2022 8:54 PM
> > *To:* RFI List <rfi@contesting.com>
> > *Subject:* [RFI] Another Solar Panel RFI System
> > All the RFI problems I've seen from neighbors have been solved by
> > isolating the problem device from the line with an adequate EMI filter
> > from Corcom. One LED strip lighting problem was solved only by changing
> > to a analog power supply. How many sources of RFI are there that DO NOT
> > utilize the house wiring, at least partially, as the radiating antenna?
> > Can it be proven that RFI below 30 MHz from solar installations is ONLY
> > from direct radiation and not from house wiring? I would like to see
> > some proof.
> >
> > Jim W6YA
> > _______________________________________________
> > RFI mailing list
> > RFI@contesting.com
> > http://lists.contesting.com/mailman/listinfo/rfi
> _______________________________________________
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> RFI@contesting.com
> http://lists.contesting.com/mailman/listinfo/rfi
>
--
*Dave - WØLEV*
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