[RFI] pleasant surprise today from Solar Edge

[WW3S]

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.