The cards I listed yesterday have both mic and line level inputs (separate jacks) one or the other will be a reasonable match for the headphone output.
As far as driving the mic input of the KX3 with line (speaker) output, simply put a 10:1 (20 dB) attenuator in the cable to the mic input. Typically one would connect a 1 uF cap to the tip of the speaker jack, a 10K resistor from the cap to another 1 uF cap to the mic input of the KX3 and a 1K resistor from the junction of the 10K resistor/output 1uF cap to the shield/return (from sleeve of the speaker jack to mic return of the K3). Note: the 1uF caps are simply there to block DC on the sound card output (may not be necessary) and block the bias on the KX3 mic line (if the KX3 is configured for use with an electret mic). If the drive is still excessive, change the 1K resistor to 470 Ohms (22:1 or -26 dB). 73, ... Joe, W4TV On 2015-06-10 12:02 PM, Mark Tannert wrote:
It would seem that all these line level input/output sound cards would have some difficulty working with the KX3, which uses mic level input and headphone level output. Kindly correct me if I'm wrong. Cheers, Mark/WN8U ______________________________________________________________ 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 li...@subich.com
______________________________________________________________ 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
