Kim:
Quote: " but any system will have to not merely RF quiet, but absolutely
RF *silent* from DC to as high as I can collect the
equipment to measure."
Put this (word smithed in 'legalize' language) in writing in any contract
you sign with a solar power installation provider.
Dave - WØLEV
On Wed, Feb 5, 2020 at 3:58 PM Kim Elmore <cw_de_n5op@sbcglobal.net> wrote:
> All of this has been VERY informative. My wife suggested we look into a
> photovoltaic system for our house, and I find the idea very compelling. But
> I won’t do it at the cost of my Amateur Radio activities. I may talk to
> some locals, but any system will have to not merely RF quiet, but
> absolutely RF *silent* from DC to as high as I can collect the equipment to
> measure.
>
> Kim N5OP
>
> "People that make music together cannot be enemies, at least as long as
> the music lasts." -- Paul Hindemith
>
> > On Feb 5, 2020, at 1:59 AM, Tony <dxdx@optonline.net> wrote:
> >
> > All:
> >
> > My neighbor gave me permission to shut off his SolarEdge solar panel
> inverter while I ran some tests. I recorded the results at my home station
> and noticed that the S-9 spikes disappeared when the inverter was turned
> off. The noise floor also dropped considerably.
> >
> > A few remaining spikes were tracked to the cabling that feeds the solar
> panel optimizers which were still running in safe mode. Unfortunately,
> there's no way to shut off the optimizers without physically disconnecting
> them.
> >
> > The noise reappeared when the inverter was turned back on.
> >
> > Before I left, I decided to probe the AC lines running off the house
> main panel for RFI. Sure enough, there were high levels of the same noise
> on the the exposed lines that run along the basement ceiling of my
> neighbors home. All that noise is feeding into the AC lines so the house
> wiring makes for one big antenna.
> >
> > Less significant, but worth mentioning is that the inverter does not
> have a dedicated ground rod. It's grounded instead to a water pipe in the
> basement which then splits to the main panel with a 6 foot ground wire.
> >
> > I also noted the model number of the inverter and found that it's the
> same 6KW unit that Tony Brock-Fisher found to be very noisy.
> >
> > More to come.
> >
> > Tony -K2MO
> >
> >
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>
--
*Dave - WØLEV*
*Just Let Darwin Work*
*Just Think*
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