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

[Dave (NK7Z)]

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.