On Sat, 17 Jul 2010 10:48:36 -0700, John, KI6Wx wrote: >My advice would be to >disregard this report because the measurements were not made in such a way >as to accurately determine the response of the K3 filters
John, You are badly mistaken. The K3 was excited by broadband noise, and there was enough of it for none of the noise to be internally generated. I am the author of the study, and if you had read the email that pointed to it you would have seen that. These measurements are QUITE valid, and represent the response of the radio from antenna input to audio output. The wide and narrow measurements on the same page are the same data, plotted to different scale -- the narrow plots to show filter bandwidth, the wide plots to show behavior well down the slope of the filter curve. The dynamic range of the measurement is at least 75dB. 73, Jim Brown K9YC ______________________________________________________________ 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
