[RFI] Another RFI movie...

[Dave (NK7Z)]

Hi Tony,

Yes...  Most all the RFI you see is coming from a single location, five 
years ago it was grow five strings of lights.  I assume it is the same, 
as I have seen no changes in that time...

There is a small light leak in the window of the suspected homes garage 
window.  The RFI starts at the exact same instant as a very bright 
orange light becomes visible in the garage window-- so I am sure the 
home under suspicion is in fact the source.  That and the fact the loop 
takes a null as it should when pointed at the place, the AM radio takes 
a peak as I drive by, and the two meter beam takes a peek when I point 
it at the garage.  Many indicators, all pointing at the same place.  Yes 
it is on a timer, the RFI starts and stops in cycles I would expect for 
a grow operation as well.

By the time yu read this, I will have a second movie of 30 Meters up and 
active.  It will be below the 40 Meter movie...  I just finished 
rendering it, so I need to make it a .mp4, then upload and link it.

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

On 5/31/22 20:45, Tony wrote:
> Dave:
> 
> Have you been able to figure out what's causing that wide-band noise 
> that starts at 06:40 a.m. and ends at around 40 minutes after midnight? 
> I'm referring to the noise that's roughly 70 kHz wide that appears 
> below, in the middle and above the top of the 40 meter band.
> 
> Wonder if it appears and ends at the same time each day -- that suggest 
> the device is on a timer.
> 
> Tony -K2MO
> 
> 
> On 5/30/2022 9:17 PM, Dave (NK7Z) wrote:
>> Hello,
>>
>> I just finished another 24 hour capture of the RFI at NK7Z...  It is 
>> located at:
>>
>> https://www.nk7z.net/rfi-site-survey-part-ii-interpretation/
>>
>> Move three quarters of the way down the page, and you will see the SDR 
>> movie, you can't miss it, there is a giant white play arrow in the 
>> middle.  The movie covers a 24 hour stretch of time, and shows the 
>> entire 40 meter band plus some slop on both sides, as time moves forward.
>>
>> There is a full screen option visible on the lower right of the 
>> player, if you hit it, a lot more detail is visible...
>>
>> What is really cool about this is you can see the CW "fog", caused by 
>> all the folks in the CW contest...
>>
> 
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