[RFI] 8 KHz spurs across much of amateur spectrum

[N4ZR]

This may be a fool's errand, but just in case - I have discovered 
relatively pure carriers every 8 KHz 2-28 MHz (not heard on 160), 
tapering in strength as the frequencies get higher.  I assume some sort 
of switching power supply, but from what I've read most run at higher 
frequencies than that.  Is this by chance a signature of a particular 
source?

-- 

73, Pete N4ZR
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