I finally got around to downloading and trying KS7D Mike's K3 Filter Tools program.
I had previously measured the response of one of my filters by manually sweeping the K3 VFO across the XG-2's 50 microvolt signal and writing down the AFV outputs from the K3 display. Then I discovered that I had forgotten to turn off the AGC, and never bothered to repeat the measurements. Now, with Mike's excellent program, I have some nice plots of my K3 filter responses, with and without the effects of the DSP filters. I have the XG-2 connected to one of the antenna inputs of my KD9SV receive antenna box, so I can switch it into the K3 without changing any cables. Nice work, Mike! 73, Chuck Guenther NI0C K2/10 s/n 5853 K3/100 s/n 1061
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