The K3's APF feature formalizes behavior that I used to implement by mixing
the audio from the main and second RX with the two receivers set to different IF and DSP bandwidths. The first few times I tried the APF, I was not impressed; I thought (mistakenly) that it was not "meant" to work with the 8-pole 400Hz IF filters in my K3. Boy, was I ever wrong! I followed the suggestions that Eric posted last week - especially using 1Hz FINE tuning - and APF has, indeed, allowed me to hear signals that were inaudible before. In particular, it has allowed me to work VP8ORK from 160m down to 10m, raising copy from "ESP" to "workable" in many cases. -- 73 -- Brian -- K1LI ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
My mistake: Eric is a great guy, but credit for this post goes to Wayne,
N6KR: See: http://elecraft.365791.n2.nabble.com/Tips-for-using-APF-td5964773.html My apologies to Wayne! -- 73 -- Brian -- K1LI On Tue, Feb 1, 2011 at 12:43 PM, K3RWN <[hidden email]> wrote: > Can you help me with finding the posting by Eric that you mentioned? > > I am not finding it in the archive search or my search topics are off. > > Rich > > -----Original Message----- > From: [hidden email] > [mailto:[hidden email]] On Behalf Of Brian Machesney > Sent: Tuesday, February 01, 2011 12:23 PM > To: Elecraft Reflector > Subject: [Elecraft] K3: APF... wow! > > The K3's APF feature formalizes behavior that I used to implement by mixing > the audio from the main and second RX with the two receivers set to > different IF and DSP bandwidths. The first few times I tried the APF, I was > not impressed; I thought (mistakenly) that it was not "meant" to work with > the 8-pole 400Hz IF filters in my K3. > > Boy, was I ever wrong! I followed the suggestions that Eric posted last > week > - especially using 1Hz FINE tuning - and APF has, indeed, allowed me to > hear > signals that were inaudible before. In particular, it has allowed me to > work > VP8ORK from 160m down to 10m, raising copy from "ESP" to "workable" in many > cases. > > -- > 73 -- Brian -- K1LI > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > 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:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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