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

[Hare, Ed, W1RFI]

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.

BTW, the ARRL Lab has two staff openings in the Lab. The Lab wants a ham with good RF experience, significant amateur experience to be the RF engineer and they are looking to hire
a ham with digital amateur radio experience to spearhead more involvement of the Lab with digital amateur radio.

We are also looking for more volunteers to help with various tasks, from testing of noisy devices, testing of incoming equipment donations, answering the phone, restoring older equipment, and just being a general assistant for a number of Lab projects. We also have a number of corresponding volunteers, some working on projects remotely, so you can help make the ARRL Lab even better if you want to do this in collaboration with ARRL.

Contact W1GKS at arrl.org if you are interested.

Ed, W1RFI
ARRL Lab Volunteer



________________________________
From: RFI <rfi-bounces+w1rfi=arrl.org at contesting.com> on behalf of AA5CT via RFI <rfi at contesting.com>
Sent: Wednesday, August 23, 2023 9:27 PM
To: rfi at contesting.com <rfi at contesting.com>; Jim Brown <jim at audiosystemsgroup.com>
Subject: Re: [RFI] LED Street lights

I don't know where you're coming from Jim. How long has it been since you've been in the 'field' with a portable SW receiver?


Noisy devices, power poles, even lighting poles all have distinctive signatures heard when standing near them. The CLOSER you get the STRONGER will be whatever noise/signal the device *may* be generating. Surely this aspect need not be spelled out?


I still stand with the advice as a first tier investigation to GET NEAR THE DEVICE and inspect the ham bands for any anomalous noise. This isn't rocket science. This e-mail was a response to Eric for advice looking at a NEWLY installed LED lighting pole. Eric, if you have a SW/HF radio in the car that might be a way to do a first tier/first pass inspection of the new lighting pole too.


 de AA5CT Jim

---------------------------------



    On Wednesday, August 23, 2023, 7:54:53 PM GMT-5, Jim Brown <jim at audiosystemsgroup.com> wrote:

 On 8/23/2023 5:17 PM, AA5CT via RFI wrote:
> Hmmm ... if an exotic receive apparatus is required to 'spot the noise', how serious could the noise really be?

Not all noise is broadband. Indeed, most electronic noise is not. And
the receiver cited makes an excellent spectrum analyzer. Most noise is
radiated by wiring, not by the fixtures themselves.

NK7Z's webpage provides lots of excellent troubleshooting advice for
chasing electronic noise.

73, Jim K9YC


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