I have a 7kW solar system with Enphase IQ6 microinverters (I think the
current model is IQ8) that has been in place for over 8 years, and I have
experienced no RFI on the ham bands. I have since referred several other
hams to the company that did my installation, the most recent of which was
about 6 months ago, and they have had the same experience. I would highly
recommend using Enphase microinverters in any solar system where RFI might
be a concern.
That said, it's also important to have a solar installer that is willing to
work with you to ensure the system will not generate RFI once installed.
I've heard horror stories from hams who had a solar system installed
that did produce RFI, and then found that their installer had little to no
interest in fixing the problem once the installation was complete. The
company I worked with was not familiar with RFI concerns when I started to
work with them, but fortunately they were willing to work with me to learn
about it up front. It probably didn't hurt that I told them I'd be happy
to refer other local hams to them if they could install a system that met
my requirements and, as mentioned, I have lived up to that offer.
73,
Frank N6OI
On Sun, Jul 13, 2025 at 9:19 AM <rfi-request@contesting.com> wrote:
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> Today's Topics:
>
> 1. Solar System Inverters (Riki, K7NJ)
> 2. Re: Solar System Inverters (nlsa@nlsa.com)
> 3. Re: Solar System Inverters (David Eckhardt)
>
>
>
> ---------- Forwarded message ----------
> From: "Riki, K7NJ" <k7nj@awinets.com>
> To: <rfi@contesting.com>
> Cc:
> Bcc:
> Date: Sat, 12 Jul 2025 15:11:23 -0600
> Subject: [RFI] Solar System Inverters
> I am very cautiously considering the installation of a solar power system,
> but am very much aware of the potential RFI problem that this could cause.
> The following inverter manufacturers have been proposed as possibilities:
>
> 1. Solaredge
>
> 2. Emphase
>
> 3. G4E4
>
> I would appreciate receiving comments about these inverters, and any others
> that have been found to be suitable (for a ham radio environment).
>
> 73 de Riki K7NJ
>
>
>
> --
> This email has been checked for viruses by Avast antivirus software.
> www.avast.com
>
>
>
> ---------- Forwarded message ----------
> From: <nlsa@nlsa.com>
> To: "'Riki, K7NJ'" <k7nj@awinets.com>, <rfi@contesting.com>
> Cc:
> Bcc:
> Date: Sat, 12 Jul 2025 19:57:17 -0400
> Subject: Re: [RFI] Solar System Inverters
> Dear Riki,
> It might be useful to refine your question a bit. Are you interested in
> string inverters, microinverters, or power optimizers? Are you mostly
> concerned about HF or VHF RFI?
> Best regards,
> Michael, W9IP
>
> -----Original Message-----
> From: RFI <rfi-bounces+nlsa=nlsa.com@contesting.com> On Behalf Of Riki,
> K7NJ
> via RFI
> Sent: Saturday, July 12, 2025 5:11 PM
> To: rfi@contesting.com
> Subject: [RFI] Solar System Inverters
>
> I am very cautiously considering the installation of a solar power system,
> but am very much aware of the potential RFI problem that this could cause.
> The following inverter manufacturers have been proposed as possibilities:
>
> 1. Solaredge
>
> 2. Emphase
>
> 3. G4E4
>
> I would appreciate receiving comments about these inverters, and any others
> that have been found to be suitable (for a ham radio environment).
>
> 73 de Riki K7NJ
>
>
>
> --
> This email has been checked for viruses by Avast antivirus software.
> www.avast.com
> _______________________________________________
> RFI mailing list
> RFI@contesting.com
> http://lists.contesting.com/mailman/listinfo/rfi
>
>
>
>
>
>
> ---------- Forwarded message ----------
> From: David Eckhardt <davearea51a@gmail.com>
> To: "Riki, K7NJ" <k7nj@awinets.com>
> Cc: rfi@contesting.com
> Bcc:
> Date: Sun, 13 Jul 2025 02:10:00 +0000
> Subject: Re: [RFI] Solar System Inverters
> ARRL has worked with SolarEdge for several years. However, they are still
> installing "old designs" which are highly RFI prone. I can't speak for the
> others.
>
> Dave - WØLEV
>
> On Sat, Jul 12, 2025 at 9:19 PM Riki, K7NJ via RFI <rfi@contesting.com>
> wrote:
>
> > I am very cautiously considering the installation of a solar power
> system,
> > but am very much aware of the potential RFI problem that this could
> cause.
> > The following inverter manufacturers have been proposed as possibilities:
> >
> > 1. Solaredge
> >
> > 2. Emphase
> >
> > 3. G4E4
> >
> > I would appreciate receiving comments about these inverters, and any
> others
> > that have been found to be suitable (for a ham radio environment).
> >
> > 73 de Riki K7NJ
> >
> >
> >
> > --
> > This email has been checked for viruses by Avast antivirus software.
> > www.avast.com
> > _______________________________________________
> > RFI mailing list
> > RFI@contesting.com
> > http://lists.contesting.com/mailman/listinfo/rfi
> >
>
>
> --
>
> *Dave - WØLEV*
>
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