[RFI] pleasant surprise today from Solar Edge

[Tony]

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.
> _______________________________________________
> RFI mailing list
> RFI at contesting.com
> http://lists.contesting.com/mailman/listinfo/rfi