[Top] [All Lists]

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

To: "'Hare, Ed W1RFI'" <w1rfi@arrl.org>, "'<Rfi@contesting.com>'" <rfi@contesting.com>
Subject: Re: [RFI] Tesla's Response to Solar Panel RFI
From: "EDWARDS, EDDIE J via RFI" <rfi@contesting.com>
Reply-to: "EDWARDS, EDDIE J" <eedwards@oppd.com>
Date: Mon, 23 Dec 2019 15:29:19 +0000
List-post: <mailto:rfi@contesting.com>
"... yes, they are changing their designs.  These field retrofits are 


How expensive are the retrofit kits? 

I was not talking about "expensive retrofits" being a design change.  That 
indicates they are NOT changing their basic design at all.  By "Basic Design" I 
meant it is redesigned so as not to need any field retrofits at all to work 
properly without creating RFI.  Based on your posts it sounds like that's not 
happening and not going to happen in the future.  

The result of the original RFI design eventually being installed everywhere to 
fight the "theory of climate change" is going to be exactly what I described in 
my post.  

In the future, hams will move into a house (with NO HOA or Covenant antenna 
limits!) and find out too late that neighbor(s) have noisy RFI solar panels 
installed years ago that he didn't see or notice.  

Or in other cases someone wants to become a licensed ham operator and buys a 
radio and puts up an antenna after spending months studying and getting his/her 
license.  Then he/she learns the cause of their poor reception is RFI from 
neighbor(s) solar panels that were installed several years ago.  

In both cases, I very much doubt the installer or supply vendor is going to 
provide a free expensive field retrofit to all the ham's neighbors who suddenly 
have a new ham moving in next door many years after the initial installation.  

The result of this scenario is the licensed ham will have to either pay for the 
expensive field retrofit for all of his/her neighbors (possibly several or even 
dozens of neighbors), sell the newly purchased house and move to the 
countryside with fewer neighbors, or else give up on ham radio and get a new 
hobby that doesn't have these expensive never ending RFI problems. (RFI grow 
lights, RFI battery chargers, RFI wall warts, & many other RFI sources keeping 
noise floor at S7-8 so he/she still can't hear most HF stations who live in the 
countryside calling.)  

Our amateur radio "technical pool" will continue to shrink even further than it 
already has the last 30 years due to HOAs and covenants causing them to 
eventually lose interest in participating in amateur radio at all.  I've 
watched many hams leave the hobby for these reasons.  Most hams get into the 
hobby to operate their radios, not spend most of their time tracking down RFI 
sources or fighting HOAs.  Model railroading is beginning to look like a better 
retirement hobby more and more every day.  

73, de ed -K0iL
Ed Edwards

-----Original Message-----
From: RFI <rfi-bounces@contesting.com> On Behalf Of Hare, Ed W1RFI
Sent: Sunday, December 22, 2019 4:35 PM

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.

It reminds me of the BPL days, when some manufacturers did change the design of 
their systems not to use the  ham  bands. That got  into various industry 
specifications and the ITU-R adopted  recommendations for BPL to avoid Amateur, 
broadcast and other  spectrum.


From: Eddie Edwards 
Sent: Thursday, December 19, 2019 10:23 PM
Subject: RE: [RFI] Tesla's Response to Solar Panel RFI

Unless solar vendors change there basic design to
eliminate RFI in all cases before installation, this will eventually
escalate to a bigger mess mostly in regions where ample sunshine allows a 10
year break even on investment when electric bills rise sharply.  I don't
think the solar vendors will change their bad design.  So eventually it will
escalate when a ham moves into a home where a neighbor has noisy solar
panels already in place for a few years, and the ham discovers this too late
after moving in.  Now he has a complaint that the vendor will not respond to
since it is not a new installation.  This is our future for HF ham radio.

This will reduce the number of hams active on HF just as HOAs have done over
the long term.

RFI mailing list

<Prev in Thread] Current Thread [Next in Thread>