James:
Solar Edge used the same suppression techniques on my neighbors
installation and it only reduced the noise from S-9 +15 db to S-9 which
is still very high.
I suspect that the suppression would be more effective on installations
that emit lower-levels of RFI so it would be interesting to know how
strong the noise was prior to the suppression being installed and what
the results were afterward.
The distance from your antenna to the solar panels is another factor so
it would be helpful to know that as well.
Congratulations.
Tony -K2MO
On 9/23/2020 9:29 PM, WW3S wrote:
My neighbor across the street had a 21 panel Solar Edge array
installed in May 2019, 6.5 kw I believe. I had the 18kc noise spikes,
and the 200kc spaced optimizer noise. After working with Paul at the
ARRL, who contacted the Solar Edge technical team on my behalf, Solar
Edge committed to fixing the problem. They were supposed to come out
in the spring, but of course current events prevented that. A visit
was scheduled for early September, but the local crew needed to
cancel. So I was suprised to see their van at the neighbors bright and
early this morning. While the panels were disconnected, I took so more
sdr sample screenshots, of course no noise. The engineer from Solar
Edge appeared, and we had a brief chat about the course of action they
were going to take. replace all 21 optimizers, twist all the DC
wiring, and install ferrites on all the leads in to the optimizers. I
had to leave for an appt this afternoon, and they were gone when I got
back, but......it appears to be successful !!! The 200kc optimizer
noise certainly is gone, no notice of it at all on the sdr, and the
other noise seems gone as well. I only had a short time to check, but
it certainly seems to have knocked most, if not all, of the noise
down.....(insert emoji for jumping on soapbox) No matter how you feel
about the ARRL, they are really the only game in town as far as
supporting the amateur radio community with regards to RFI and
spectrum defense. If you can spare a few bucks, send it to them. If
you are not a member, think about joining.
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