On 8/23/2018 12:51 PM, Kyle Chavis wrote:
Years back I used a K-COM noise filter that worked well. Not sure if
they're made anymore.
Yes, those filters were quite effective. I measured them and found very
high choking Z. The proprietor passed away at least 10 years ago, and
there was a K6 who was building filters that I also measured. See
k9yc.com/RFI-Ham.pdf for data, and for recommendations for achieving
those high values of choking Z with #31 toroids. It's a LOT of turns and
two cores. :)
73, Jim K9YC
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