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

To: rfi@contesting.com
Subject: Re: [RFI] Tesla's Response to Solar Panel RFI
From: Gary Johnson <gwj@wb9jps.com>
Date: Sun, 22 Dec 2019 17:32:28 -0800
List-post: <mailto:rfi@contesting.com>
TJ Simpson at Solar Edge tells me the new optimizers use spread spectrum 
modulation to reduce the 200 kHz interference that I am experiencing. In 
January, he is coming to install those next door. The wiring has already been 
rerouted and ferrites installed on a previous service call, but that didn’t 
reduce the 200 kHz carrier amplitudes here. So we’ll see what the new 
optimizers do. Thankfully the system is otherwise very quiet. I did a careful 
walk-around with my DFing gear and indeed the main inverter is very quiet. Only 
the carriers from their optimizer telemetry cause me any problems.

I must commend SolarEdge on their ongoing interest in solving my RFI issues. 
They are not super fast, but they work is getting done and I have a 
knowledgeable human being to work with.  No lawyers required.

Gary Johnson NA6O  

> On Dec 22, 2019, at 3:21 PM, rfi-request@contesting.com wrote:
> Actually, yes, they are changing their designs.  These field retrofits are 
> expensive.  The Lab's W1VLF was on the list to get his own home system 
> upgraded and they replaced the inverter, the optimizers, added ferrites and 
> did twisted pairs  to the panels, not a big loop.

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