Hello Bonnie and Tom,

Yes, the Laboratory did have a direct impact on the handling of

interference issues experienced by the end user of that manufacturer's

device. It was probably not the sole reason for the redesign but the

importance of the EMC considerations were definitely amplified by

direct contact with the ARRL Lab staff.

I do need to check about the conditions that exists between that

manufacturer and any possible NDA agreement that was established

in order to facilitate direct dialog with that manufacturer. Again, the

best resolution will arise when there is cooperation between the League

and manufacturers. This also points up the need for us to be directly

involved with the writing of industry EMC standards

73, Kermit

On Friday, July 13, 2018, 1:43:35 AM CDT, Bonnie Altus <bonniealtus@onlinemac.com> wrote:

Did the ARRL lab have influence on the re-designed version that is in the supply chain?

I was presenting at a club last week and I was asked about the Lab working with some manufacturers on devices that had interference problems. I was asked about the prognosis of that actually being effective. I told him I would do some checking and get back to him since I didn’t have a good answer on the spot. I dropped Kermit’s name and the EMC Committee, along with the ARRL Lab in that conversation.

If the ARRL Lab did have some influence, is that something we can share specifically?

Bonnie AB7ZQ

From: arrl-odv <arrl-odv-bounces@reflector.arrl.org> On Behalf Of Kermit Carlson via arrl-odv
Sent: Thursday, July 12, 2018 7:38 PM
To: arrl-odv@reflector.arrl.org; Carlson Kermit <w9xa@arrl.org>; John Robert Stratton <N5AUS@n5aus.com>
Subject: [arrl-odv:27351] Re: ARRL EMC Committee Meeting - DOCUMENT #16

Hello John -

THe manufacturer is Solar Edge, I also believe that they

are the OEM of the problematic optimizer circuit. A re-designed version

is in the supply chain and the problem that their system presents can

be remedied - but with PV systems becoming a cottage industry (especially

in California) we will need real-time input from the field to keep harmful

interference problems in check. The important take-home from the

Solar Edge story, is that industry really worked well with the ARRL lab

(Mike and Ed) to solve the problem.

We are starting a cloning process in the lab, but we aren't

supposed to tell anyone.

Thanks for the kind words, I will pass your message along to the

Committee. See you in a few days !

GUD DX es 73,

- Kermit W9XA

On Thursday, July 12, 2018, 9:28:22 PM CDT, John Robert Stratton <N5AUS@n5aus.com> wrote:

Kermit

    Who is the solar products manufacturer discussed under "Solar PV Systems"?

    And — please — could we all agree to number the pages in our reports to make it easier to discuss them? T

    What plans do we have to clone Mike Gruber or find a suitable replacement?

    Kermit, thanks to you and the EMC Committee for the extensive work, by the way.

_______________________________________

John Robert Stratton

N5AUS

Vice Director

Legislative Director

West Gulf Division

Office: 512-445-6262

Cell: 512-426-2028

P.O. Box 2232

Austin, Texas 78768-2232

_______________________________________

On 7/12/18 9:09 PM, Kermit Carlson via arrl-odv wrote:

Greetings,

Please find attached the July 2018 ARRL EMC Committee

Report, Document #16. The Report and Appendices are attached

as two separate PDF files. As always, please contact me directly

with any suggested edits or corrections.

Respectfully Submitted,

73, Kermit Carlson W9XA

ARRL EMC Committee Chair

ARRL Central Division Director

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