* On 2010 03 Nov 15:06 -0500, Wayne Burdick wrote: > K3 beta-test firmware revision 4.17 (with DSP rev. 2.65) is now > available. This release includes our new APF (audio peaking filter) > for CW mode, which has been helping K3 field testers work "extreme" > weak DX for the past several days.
Hi Wayne, never having used this sort of function before, I am pleased with how well it works just the few minutes of playing with it. Thanks much. > * NARROW AF FILTER IMPROVEMENT: Adjusting SHIFT and > WIDTH when using very narrow DSP filters no longer causes > ‘pop’ artifacts. Perhaps I had not noticed them before, but in tweaking on CW using the WIDTH control, I can hear a slight audio pop on occasion which sounds a bit like a scratchy pot and is certainly not the slight drop in audio as the filters are switched in and out. I notice it only when going from 150 to 100 Hz bandwidth but not back again. It does not do it all the time, however. I can repeat it if I widen to about 450 Hz and then narrow it back down to 100 Hz and the slight "tick" is there each time the switch is made from 150 to 100 Hz. My K3 is a single receiver with 2.7, 2.1 kHz, and 500 and 200 Hz filters installed. BTW, are there filter plots for the Elecraft 5 pole filter available? 73, de Nate >> -- "The optimist proclaims that we live in the best of all possible worlds. The pessimist fears this is true." Ham radio, Linux, bikes, and more: http://n0nb.us/index.html ______________________________________________________________ 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
