Rest assured George, the mic input Z is not a rig selection criteria for me. This is for a completely different item I am developing to adapt my mics to various rigs including the K2 and K3.
John On 1/6/2011 5:55 PM, George & Jan wrote: > John, > I would not select a radio on the input impedance of the microphone input! > It is not critical at all - should be at least 10 times the microphone > impedance. > > Pro-Audio from as far back as the antique Western Electric unbalanced > systems of the 40s tend to be in the range of 1 k to 10 k. Mostly depends on > what the designer wants to emphasize. Lower would tend to reduce noise > pick-up. Higher would tend to load the mic less thus improving S/N. Probably > neither value is significant. > > George > AI4VZ > > -----Original Message----- > Was there a compelling reason for having different termination values, 10k > vs. 1k, between transceiver model lines? > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
