APF worked great this morning. Was hunting for the KH2 on 160m and couldn't hear him. Turned on the APF and used 3-digit resolution on the VFO (10HZ steps) and he popped out as I tuned across him. Worked him with two calls. New one on topband.
I installed 4.17 on #311 and have 4.22 on #1435. So far I can't hear a difference when using the APF on very weak signals on topband. 73, N2TK, Tony -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Wayne Burdick Sent: Sunday, November 21, 2010 12:45 AM To: Dave Perry N4QS Cc: Elecraft Reflector Subject: Re: [Elecraft] K3 APF Effectiveness 5-Hz steps simply make it easier to tune the APF. This has absolutely no effect on the filter passband, Q, etc. Going back to 10-Hz steps would just make it harder to center signals when using SHIFT, as was the case with 4.17. Many operators requested the finer step size. 73, Wayne ---- http://www.elecraft.com On Nov 20, 2010, at 6:54 PM, "Dave Perry N4QS" <[email protected]> wrote: > > I agree that the signal doesn't pop out anymore with 4.22, but I think it is > due to the change to 5 Hz tuning. It is harder to hear the peak in the > signal with the 5 Hz steps in the Shift tuning. I think we should go back > to 10 Hz per click. Just my opinion. > > Dave, N4QS > > ----- Original Message ----- > From: "John Seney" <[email protected]> > To: "Igor Kosvin" <[email protected]> > Cc: "'Elecraft Reflector'" <[email protected]> > Sent: Saturday, November 20, 2010 2:16 PM > Subject: Re: [Elecraft] K3 APF Effectiveness > > >> Hi All: >> >> I have the same experience as Igor. There is an APF sweet spot that either >> moved or >> disappeared. >> >> Would it be helpful if there was a GUI that let us save, load, share, and >> see all of >> the various K3 parameter settings that we are adjusting? >> >> On Nov 17, 2010, at 11:53 PM, Igor Kosvin wrote: >> >>> Sure, you are right, but you would not deny that using same set of >>> parameters (NR/NB, WIDTH, PITCH, RF, etc) the APF circa 4.17 and 4.22 >>> should >>> give very similar results since the code of APF remains the same. After >>> playing few days with 4.22 I find myself having to turn off APF to better >>> receive weak CW stations. I don't have explanation for this. With APF on >>> I >>> find it difficult to distinguish dits and dahs of weak signals. With 4.17 >>> it >>> was much better for me. That should be apples-to apples comparison, I >>> think. >>> I don't claim to be expert though, listening is very subjective IMHO. >>> >>> Regards, >>> >>> Igor, N1YX >> >> >> 73, >> >> John Seney >> ARS WD1V (fn42gw) >> 603 785-2413 >> >> >> ______________________________________________________________ >> 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 ______________________________________________________________ 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
