While it may not be a “perfect” material, it was what I had on hand, and I measured over 800 ohms choking impedance on the band of interest.
It’s definitely doing something useful. I have your cookbook, and will use it for future projects. > On Oct 12, 2020, at 10:05 PM, Jim Brown <j...@audiosystemsgroup.com> wrote: > > On 10/12/2020 5:55 PM, Bill Coleman wrote: >> It is unlikely the balun is “breaking down”. It’s a current balun - #43 >> ferrite beads on RG-313 coax. It can easily handle a kW or more. > That's a common mode choke, and #43 is a terrible material for the HF bands. > See my "cookbook" at k9yc.com/publish.htm as well as the Ham's RFI tutorial, > which explains things conceptually. > > "handle a kW," perhaps, but only because it's also unlikely to be doing > anything useful. :) > > 73, Jim K9YC > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to aa...@arrl.net Bill Coleman, AA4LR, PP-ASEL Mail: aa...@arrl.net Web: http://boringhamradiopart.blogspot.com Quote: "Not within a thousand years will man ever fly!" -- Wilbur Wright, 1901 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
