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Re: [RFI] Update: Tesla's Response to Solar Panel RFI

To: rfi@contesting.com
Subject: Re: [RFI] Update: Tesla's Response to Solar Panel RFI
From: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Mon, 23 Dec 2019 11:59:41 -0600
List-post: <mailto:rfi@contesting.com>
Excellent comment and information, Ed. A Merry Christmas to you!

Everyone stop with the class action, call-the-lawyers nonsense. One of the quickest ways to kill goodwill and cooperation is to involve lawyers. It's not the lawyers themselves that cause problems for us, but what they're tasked to do. They're responsibility is to their client, not us. They're job is to reduce, as much as possible, risk for their client. Solar Edge and Tesla expose themselves to considerable liability risk by recognizing there is any issue to be solved. They meet the letter of the law and, so far, have chosen to go beyond that by fixing installations that need fixing and even redesigning their systems to mitigate the problem in the future. No, don't expect them to replace every existing system with a redesigned one...

Why start a war? They have deeper pockets than we do, by a fair margin, and once lawyers become involved, the lawyers will have access to those pockets. While I've dealt with RFI on many occasions, I've never resorted to lawyers to do it: I've almost always used goodwill and cooperation to solve the problems. In a few instances, I've not succeeded and, when the neighbor contacted the FCC, I had clearly documented all my interactions and the FCC wound up telling them exactly what I had. In this case, SolarEdge has chosen to address the issues as they occur. That's far better than TV manufacturers did when over-the-air VHF TV was the only TV entertainment option.

If you'd like to blow up any possibility at solving these problems amicably then, by all means, contact your attorney and have at it. But, you'll spoil it for all the rest of us in doing so. If you insist that "there ought to be a law!" then be prepared for the inevitable unintended consequences that will come with such an effort, because they will be many, varied, and far less tractable than what we have now.

Kim N5OP

On 12/22/2019 6:34 PM, Hare, Ed W1RFI wrote:
And just what would you have lawyers do? Solar Edge is already handing the 
problems and replacing systems. Tesla is a new player   and that initial letter 
was written by  their lawyers. You saw the result.  If we take this out of the 
hands of the engineers who are trying to fix this and to improve future 
designs, the lawyers will try to stop that.  This is not a case for the lawyers 
nor for the FCC.  The systems meet the limits and the vast majority  of harmful 
interference complaints have been or are being resolved.

The verbiage I have typed so far talks about how working together is working.


From: Dale Johnson <dj2001x@comcast.net>
Sent: Sunday, December 22, 2019 6:34 PM
To: Hare, Ed W1RFI <w1rfi@arrl.org>
Cc: rfi@contesting.com <rfi@contesting.com>; jim@audiosystemsgroup.com 
Subject: Re: [RFI] Update: Tesla's Response to Solar Panel RFI

Seems like it should go to the lawyers.  The verbiage I read here is lawyer stuff.  I think 
it�s all in the hands of lawyers.  NOT technicians.

Anyway good luck with it.

Dale j.

On 22, Dec 2019, at 17:25, Hare, Ed W1RFI <w1rfi@arrl.org> wrote:


We are in contact with Solar Edge and Tesla,  the two major players. If  you 
can summarize what you previously provided, we can make  sure it gets into the 
hands of the engineers.


From: RFI <rfi-bounces@contesting.com> on behalf of Jim Brown 
Sent: Tuesday, December 17, 2019 2:42 PM
To: rfi@contesting.com <rfi@contesting.com>
Subject: Re: [RFI] Update: Tesla's Response to Solar Panel RFI

On 12/17/2019 10:55 AM, Hare, Ed W1RFI wrote:
Let me see if I can put this into perspective.
Thanks for your detailed summary of this. I have also contributed to
this matter, consulting with Tefford Reed, the Solar Edge field tech who
was working on K2MO's neighbor's installation. By coincidence, Reed
lived in the SF Bay area, driving distance to me, and we met twice for
lunch to discuss the project.

My contributions were to 1) educate the tech with respect to possible
mechanisms; 2) address installation-related factors unique to it that
could be affecting this particular installation; 3) wind and measure
more than a dozen chokes on several combinations of #31 to be applied to
the rooftop loop of optimizers and make specific recommendations; 4)
advised that the best and most cost effective solution was redesign of
problematic circuitry to minimize the HF noise products. One of those
installation-related factors was that the frame for the panels were
(are?) bonded to earth electrodes on the opposite side of the building
from the mains service, setting up a large loop for noise currents,
which would in turn establish a magnetic field that is strong in the
near field (like next door).

A few months later, I learned from K2MO that Reed had subsequently left
the company, and I have no idea of the extent to which my
recommendations reached anyone beyond him.

73, Jim K9YC
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Kim Elmore, Ph.D. (Adj. Assoc. Prof., OU School of Meteorology, CCM, PP SEL/MEL/Glider, N5OP, 2nd Class Radiotelegraph, GROL)

/"In theory there is no difference between theory and practice. But, in practice, there is." //� Attributed to many people; it�s so true that it doesn�t matter who said it./

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