[RFI] LED Street lights - Locations of Noisy Systems?

[Hare, Ed, W1RFI]

And thanks for what you do, too, Dave.   At some point, I think we need to try to bring ARRL's RFI web pages and yours into closer agreement.  Our cooperative program with FCC may not be perfect, especially with some of our complainants who tend to thrash about and keep getting everyone working at cross purposes, or get so inflamed that they burn the house down, but it makes a difference and we use it to build more and more collaboration, with FCC and the industry.

And the reason that ARRL has the resources to devote full time engineering staff to do this is that 160,000 of you all chipped in! Remember that always. (With thanks to all who offer their support for this work.)  Heck, I am still doing this work for free now, just a bit less of it, and NONE of the administrivia! LOL!

Ed, W1RFI
________________________________
From: RFI <rfi-bounces+w1rfi=arrl.org at contesting.com> on behalf of Dave (NK7Z) <dave at nk7z.net>
Sent: Thursday, August 24, 2023 11:17 AM
To: rfi at contesting.com <rfi at contesting.com>
Subject: Re: [RFI] LED Street lights - Locations of Noisy Systems?

Hi Ed,

I worked with the city engineer here a decade ago, and found almost
nothing from the LED lights they were testing.  They were testing
various models of lights, and gave me the locations and pole numbers of
each type.  I sat under each one at light startup...

Sitting under any of them, with an SDR, at start time, yielded almost no
RFI, 3-30 MHz.

Thankfully the city uses metal poles, and does grounding on the pole,
and the electrical system.  I am very lucky-- the city, the electric
company, and the cable company, all run tight ships here.

On another note, the ARRL, sent a letter to a grower I located via the
SDR setup, and the RFI problem ended within a month.  That was about 6
months ago, and the RFI has not returned.  All I can say is THANK YOU!
I have 80-20 meters back!  That saved me the FCC work involved, and was
a wonderful solution.

I have now probably now doomed myself, and the RFI will begin again this
evening!

In any case, THANK YOU and the ARRL for all you do for RFI!

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 8/24/23 03:42, Hare, Ed, W1RFI via RFI wrote:
> I am not quite geared up yet to make mobile measurements, but do have the equipment and can go out into the field and make some calibrated measurements.   I haven't followed every post of every topic on this list (gasp!), so does anyone know of a noisy LED street-light system within a couple hundred miles of central Connecticut?  I will go there and report back what I find.
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