Looking back in the archives of this group should yield what you seek.
Pay particular note of Ed Hare's response on the subject for regulatory
standards. Part 15 mentions "harmful". I guess what is harmful to a
moonbounce operator maybe different from what is harmful to a 80m op.
For me, as of the last 8+ months or so I am free of 120hz rfi except
distance sources and they are very intermittent so I can easily live
with that (sometimes using NB but not very often) and do not consider it
harmful for me. But the 20db over S9 I use to have definitely was.
Here is a sample letter at the ARRL website which specifies the Part 15
sections although it does not go into detail but I'm sure you could
google that; https://www.arrl.org/fcc-power-utility-letter
Let us know how it goes.
73
Chuck
W4NBO
On 6/5/22 21:12, Riki, K7NJ wrote:
I've recently become plagued by power line interference that is most
noticeable on 80M and 160M. In the past,, the local power company had been
cooperative in fixing the source(s) of such interference. However it's been
about 7 or 8 years since I've been in touch with them about such issues.
Just to be prepared, I would like to know what specific limits there are on
power line emissions (if any). I know that in the past, the requirements
were very lenient - only requiring power companies to follow good
engineering practice without any quantitative emission limits. In any case,
having the actual reference paragraph numbers in the FCC rules would be most
helpful. As I recall, this had been somewhere in Part 15. Any help would be
appreciated.
73, Riki K7NJ
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