Topband: Need Help IDing Noise

[K4SAV]

Cliff Frescura wrote:

>Greetings,
>
>I'm having some noise issues on 160m, 80m and 40m, with 160 the worst.  ........
>  
>

Looking at the waveforms, the 160 meter recording has very strong 2.5 
KHz and 120 Hz components.  The 40 meter recording has very strong 1.75 
KHz and 120 Hz components.  It appears as something arcing on each half 
cycle of 60 Hz.  The sound is typical of power line noise and so are the 
waveforms.  My guess is that it is something on a power pole.  The two 
worst offenders on power poles seem to be the lightning suppressors and 
bad insulators.

Jerry, K4SAV