[RFI] solar panel filters

[David Eckhardt]

Ferrites are better suited at reducing RFI at 30 MHz than low HF.  I am far
more concerned about 160, 80, and 40-meters, and of course, 20.1 MHz that
30 MHz.  Inverters and built-in or added after the fact optimizers produce
less and less energy as the frequency is increased.  Ferrites become less
and less effective as the frequency is decreased.  Yes, there are special
mixes of ferrites that are effective at lower frequencies, but not easily
available from your corner store.

Dave - WØLEV

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On Thu, Apr 12, 2018 at 6:32 PM, David Robbins <k1ttt at verizon.net> wrote:

> 'optimizers' are built into the inverters and are just part of the
> circuitry controlling the power flow from the panels to the lines.  and not
> all optimizing inverters are noisy, I have 27 of them here and it took all
> of 3 ferrites on each one to clean up the little bit of noise I could hear
> when beaming at the array on 10m.
>
> David Robbins K1TTT
> e-mail: mailto:k1ttt at arrl.net
> web: http://wiki.k1ttt.net
> AR-Cluster node: 145.69MHz or telnet://k1ttt.net:7373
>
>
>
> -----Original Message-----
> From: RFI [mailto:rfi-bounces at contesting.com] On Behalf Of David Eckhardt
> Sent: Thursday, April 12, 2018 18:07
> To: Leonard.Keepers at comcast.net
> Cc: Rfi List
> Subject: Re: [RFI] solar panel filters
>
> Good luck!!
>
> One bit of advice:  Do NOT incorporate 'optimizers' in your installation.
> They have proven to be extremely noisy - even worse than the inverters+
> +.  I have contacted a local installer several times for a 'solution' to
> RFI.  So far, I've received absolutely nothing in reply.
>
> Dave - WØLEV
>
>
>
>
>
>
>
>
>
> On Thu, Apr 12, 2018 at 3:26 AM, LeonardKeepers <
> Leonard.Keepers at comcast.net
> > wrote:
>
> > hello group i am asking if their are filters available for solar
> > panels to try and prevent rfi,if so what type and brands and price of
> such filters.
> >
> > thank you
> >
> > Leonard
> >
> >
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>
> --
>
> *Dave - WØLEV*
> *Just Let Darwin Work*
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-- 

*Dave - WØLEV*
*Just Let Darwin Work*