[RFI] Solar Panel RFI Update 11/11/16

[Tony]

All:

Just a quick update on my solar panel RFI case:

Solar City, the solar panel installer, met with the solar panel 
manufacturer to discuss ways to fix the solar panel RFI emanating from 
my neighbors installation.

The installer proposed using the remedies cited in Tony Brock-Fishers 
QST article which involves the installation of ferrite cores to all 
solar panel leads. The manufacturer, Solar Edge, insisted on installing 
their DC line filter instead which they say has resolved RFI issues in 
the past.

Mr. Fisher and others believe that the filter will not suppress the RFI 
emanating from the power optimizers which is where the ferrite cores 
come in.

I should mention that the power optimzers energize during the day and 
then de-energized at night which is why the noise comes on at sunrise 
and disappears after sundown.

If anyone is interested, I've have a couple of screenshots that show 
what a portion of HF spectrum looks like when the opimizers are active 
during the day and another at night when the optimizers de-energize.

I'll post an update once the Solar Edge filter is installed.

Tony -K2MO