[RFI] 175 kHz spurious signals in the vicinity of 14 MHz only

[Dave Cole (NK7Z)]

Drop S-Meter lite on it and see if it really is continuous?  If it 
follows a pattern S-Meter Lite will let you know what that pattern is, 
which might help in location.

If you can't get S-Meter Lite to work with your hardware, use an SDR to 
look at the RFI over long time periods, you can learn a lot that way.

See:

https://www.nk7z.net/sdr-rfi-survey-p1/

which is part one of a multi-part series on using a SDR to help locate 
RFI showing both setup of the SDR, and interpretation of what you find.

It will not ID it for you, but it will offer some tips as to what it 
might be, which can help.

73s and thanks,
Dave
NK7Z
https://www.nk7z.net

On 03/13/2018 11:27 AM, donovanf at starpower.net wrote:
> This RFI appears to be continuous and may be at some distance from
> my QTH. I have not found this RFI on any ham band except 14 MHz,
> where it occurs on approximately 175 kHz increments. It extends at
> least a few MHz above and below the ham band. I t slowly drifts over
> a few tens of kHz over time.
> 
> 
> The spurious frequencies can also switch instantaneously, e.g. it may
> appear at 13.825, 14.000, 14.175 and 14.350 MHz, then switch
> instantaneously to 13. 875, 14.150 kHz and 14.325 kHz.
> 
> 
> Each of the spurious signals occupies a hump of spectrum about
> 10 kHz wide.
> 
> 
> tks
> 
> 
> 73
> Frank
> W3LPL
> 
> 
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