[RFI] Generac Solar System RFI

[KD4IZ]

David,

I think you may rest easy on that account. We have a similar set up - propane powered 22KW Generac generator and circuit sequencers (for hi amperage devices). I experience no additional noise here when the unit is operating and have successfully run the ECARS net during a power outage more than once. We live in a quiet rural Maryland area.

Jack - KD4IZ
Sent from my iPhone

> On Aug 15, 2024, at 16:36, David Eckhardt <davearea51a at gmail.com> wrote:
> 
> Yesterday, my neighbor had a Generac loss-of-grid-power generator installed
> (with a 500-gallon propane tank).  Hopefully, similar technology is not
> used in their back-up generators.  Time will tell.
> 
> Dave - WØLEV
> 
>> On Thu, Aug 15, 2024 at 8:26 PM James Jordan <k4qpl2 at gmail.com> wrote:
>> 
>> If all their reps and retailers are as serious, that’s a good sign.
>> Jim
>> K4QPL
>> Sent from my iPhone
>> 
>>>> On Aug 15, 2024, at 2:27 PM, K9MA <k9ma at sdellington.us> wrote:
>>> 
>>> A few weeks ago, I tracked the source of 14 MHz interference to a
>> neighbor's Generac solar system about 0.4 miles away. After I contacted
>> the
>> local installer, this morning I got a call from a Generac representative,
>> John. (He also mentioned contact with the ARRL.) He told me the system has
>> been disabled pending installation of new "optimizers", which are on back
>> order until October. The homeowners are being compensated for loss of
>> solar
>> production in the meantime.
>>> 
>>> Optimizers are boost converters connected between each string of panels
>> and the central inverter. John claimed to have had experience with similar
>> situations and felt that the source of the interference was the
>> optimizers,
>> rather than the central inverter. He also seemed to be familiar with other
>> mitigation measures, such as installation of ferrite cores on
>> interconnecting cables. In any case, we will perform a test after the new
>> optimizers are installed, and go from there.
>>> 
>>> --
>>> Scott  K9MA
>>> 
>>> k9ma at sdellington.us
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>> 
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> 
> 
> --
> 
> *Dave - WØLEV*
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