David,
I have used this technique as well, and it does work... :)
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources
On 1/7/20 3:40 PM, David Eckhardt wrote:
I've done one growlight location, not for myself, but a friend who was
experiencing severe RFI from somewhere in his close neighborhood. We went
around the neighborhood with some very intimidating-looking antennas,
electronics, and laptops. The interference ceased after about 30-minutes
of 'being obvious' on the hunt for the problem location. We suspect
whomever was conducting the operation saw us and got scared. It's never
come on again, even after 5 months. Take all the geeky equipment you can,
even if it doesn't work anymore, lots of antennas, even a few things that
go 'click' or squeal.
Dave - WØLEV
On Tue, Jan 7, 2020 at 11:22 PM James Jordan <k4qpl2@gmail.com> wrote:
Can’t offer specific help, but I would certainly be cautious about
knocking on doors where you suspect powerful grow lights. They just might
not be trying to get beautiful blossoms on their roses 😉.
Good luck. 73,
Jim K4QPL
Sent from my iPhone
On Jan 7, 2020, at 1:25 PM, Karin Johnson <karinann@tampabay.rr.com>
wrote:
Hello Group:
I would be interested in emailing/speaking with anyone on the this list
directly, who has had some personal experience with Grow Light RFI.
Rather than take up bandwidth on this list. I have a specific Spectrum
and signal grouping that could be grow lights but am unable to positively
nail it down to a specific home. Rather there appears conflicting
direction
finding bearings when I get close to the source. I am using NationalRF
loops For 3 to 8 MHz. Besides that I am reluctant to go knocking on
peoples
doors right now. From what I have seen on the NK7Z screen shots they
don't exactly correlate to grow lights. I can supply audio and spectral
plots to enable a discussion. Just to close this missive, the time
for ON/OFF seems to correspond to a high powered grow light.
Regards,
Karin Anne Johnson K3UU
Palm Harbor, FL
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