[RFI] pleasant surprise today from Solar Edge

[Dave Cole]

THANK YOU PAUL/ED/ARRL!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!  Each 
time this happens Solar Edge learns a little, and it makes it faster, 
and simpler for the next Amateur!

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 9/23/20 6:29 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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