Re: [Elecraft] RFI wiht my KX3
In addition to the reply by Jim, be careful if using ready made “audio” extension cables. Many are not screened and will pickup RF. Even with antennas that are not close to your shack, you can have high RF levels on the coax outer, in turn that means on the case of your KX3. An easy to make RF clamp meter will show if you have these common mode currents flowing on cables into and around your shack. See: http://www.ifwtech.co.uk/g3sek/clamp-on/clamp-on.htm 73 Dave G4AON -- Sent from my iPhone SE __ 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
Re: [Elecraft] RFI wiht my KX3
On 3/19/2023 1:40 PM, John Pierce via Elecraft wrote: Is it possible to accomplish what I am trying to do? Sure -- ditch the preamp, which is un-necessary, make sure that bias is turned off, and make/use a properly wired cable adapter. Another question -- what mic are you trying to use and why did you choose it? 73, Jim K9YC (retired pro audio guy) __ 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
[Elecraft] RFI wiht my KX3
I am trying to use a dynamic mic with my KX3 and have RFI on my output. I am using the KX3 as a driver to a KM3KM amplifier looking to get about 400 to 500 watts output. I have a small pre-amp between the mike and the KX3. I have modified the pre-amp to ground the lines from and two the pre-amp at the XLR input/outputs. What frustrates me the most is that I do not have an oscilloscope to diagnose the problem. I have tried using toroid on all lines, including power lines without any success. Is it possible to accomplish what I am trying to do? John, AD2F __ 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
