[RFI] Power Line Noise - UPDATE 12/31/24

Jim Brown jim at audiosystemsgroup.com
Tue Dec 31 21:32:41 EST 2024


On 12/31/2024 2:49 PM, thoyer1--- via RFI wrote:
> Turns out it was a bad lightning arrestor (as several suggested)

In a fine ARRL book by an experienced power line noise engineer that I 
bought about 20 years ago, the author observed that almost all noise 
generated by power systems is the result of something failing, resulting 
in arcing, insulators being a common one.

Several years ago, Jeff, AC0C, alerted us to the use of MOVs in 
distribution lines, and noise resulting when they fail. He sent photos, 
which I added to my applications note on chasing noise.

73, Jim K9YC



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