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Re: [RFI] Grow Lights

To: rfi@contesting.com
Subject: Re: [RFI] Grow Lights
From: Dave Cole <dave@nk7z.net>
Date: Tue, 7 Jan 2020 17:24:06 -0800
List-post: <mailto:rfi@contesting.com>
I have changed the name on a spare wireless router I have to LE_SURVIAL#3". We will see if that has any effect.
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 3:53 PM, James Jordan wrote:
LOL! That’s certainly one good way of dealing with it. Maybe an unmarked van 
with antennas parked across the street might also encourage some circuit breakers to 
get pulled!

Sent from my iPhone

On Jan 7, 2020, at 6:40 PM, David Eckhardt <davearea51a@gmail.com> 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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--
Dave - WØLEV
Just Let Darwin Work
Just Think
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