[RFI] FCC Complaint Filing

[Dave Cole]

Odd you should mention that Kurt, I am making a movie right now of my 
RFI environment for the page I mentioned in my last post...  I'll add it 
to the page tomorrow...

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

On 11/22/19 3:10 PM, KD7JYK DM09 wrote:
> "I hate to spend the money but think I may need a Spectrum Analyzer. 
> This is an RFI mess up here, these lights would be one of twenty 
> interference issues.  I have two other sources of broadband noise 
> needing to be found, all the others are harmonics scattered up and down 
> the band(s).  The analyzer would be a help in sorting this all out as 
> well as giving me some relevant and credible data"
> 
> It may not be that bad.  Check into some of the Software Defined Radio 
> dongles, which are inexpensive, and free software.
> 
> Look into RTL-SDR on ebay, amazon, and general info on the web.  A 
> relatively fancy unit is about $30 (fancier, better, et cetera go up to 
> $$$$), and may be all that is needed to show noise vs. no noise, and the 
> get a screen capture of the interference as heard, and within proximity 
> of a source with a small antenna.  It can also help locate a source when 
> turned on, clear-ish screen vs. visual nightmare when something like the 
> LEDs you mention get powered up.
> 
> For added affect, imagine a video recording device, pointing at a 
> computer, or tablet, with an SDR, and software running showing a 
> waterfall display, and the LEDs in the background, off, then at 1700h, 
> when they come on, the cluster of noise scrolling down the screen.  That 
> would be pretty damning!
> 
> Some twenty plus years ago, we did it with a portable radio, Argo, 
> Spectran, Spectrogram, , and similar, and either get the image in real 
> time using a junk laptop, or record it for later analysis.
> 
> It doesn't have to be fancy, special, or expensive, just provide a 
> visual interpretation.
> 
> Kurt
> 
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