[RFI] 160 Meter RFI

[Dave Cole (NK7Z)]

Hi Ray,

Trying to guess the source from looking at captures can be tough... 
That said, here are a few questions:

1.  Does it ever change sound?
2.  Does it run on a schedule?
3.  It is always the same?
4.  Is it just on 160?

If it runs on s schedule, kill your house power at one of the run times 
for it to test if it is in your home...

It looks like a SMPS.  Once you get proof it is not in your home, buy or 
better yet, build a loop.

Look over Jim's paper, it does make a difference for the better, if you 
follow his steps for quieting down your RF environment.

Take a look at my page at:
https://www.nk7z.net/sdr-rfi-survey-p1/

That is part I of a two part series on getting to know your RFI 
environment using an SDR.  There are several other links on the right 
dealing with RFI as well...

73s and thanks,
Dave (NK7Z/NNR0DC)
https://www.nk7z.net
ARRL Technical Specialist
ARRL Volunteer Examiner
ARRL OOC for Oregon

On 12/5/18 9:10 AM, Ray wrote:
> I have this 160 Meter RFI :  https://youtu.be/QI08sE2FS40
> It shows up once or twice an hour for 5 to 10 minutes. Any ideas what it is?
> Thanks,
> Ray K9RS
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