For troubleshooting stuff like this, all you need is a waterfall 
display, and you can get that from very inexpensive SDR receivers. Study 
this applications note, and NK7Z's website. The second link is the slide 
deck for my talk on this at Visalia several years ago.
http://k9yc.com/KillingReceiveNoise.pdf
http://k9yc.com/KillingRXNoiseVisalia.pdf
73, Jim K9YC
On 11/22/2019 2:00 PM, N8GLS wrote:
 
Good point.  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.
 
 
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