I should have mentioned that APF is set the way it's set. I don't believe any parameters exist to change APF's operation. Someone may correct me on this.
APF is best used with a narrow bandwidth setting. I think I saw the figure 30 Hz (for -6dB points) used in conjunction with APF, so a 50 or 100 Hz filter setting seems in order. That's what I use here. 73, matt W6NIA On Fri, 10 May 2013 17:33:35 -0700, you wrote: >Best used when copy any other way is impossible due to a weak signal. >Ringing is somewhat better than noise, isn't it? > >I've found APF useful in a number of QRP events, when handling weak >signals is the order of the day. Yes - copy may be dificult but at >least you have something to work with. APF is similar to Q-mulipliers >we used in the 70's and earlier, prior to digital signal processing. > >By memory, the K3's (and KX3's) APF is an order of magnitude better >than a Qmult. Imho, it is mainly due to the excellent DSP work by >Lyle Johnson. Of course, some of the difference is also due to the >relatively poor receivers we had back then. > >73, >matt W6NIA > >On Fri, 10 May 2013 23:46:24 +0000, you wrote: > >>As a 98% cw operator, I've explored the various K3 weak signal features. >>I tend to shy away from the APF because its ringing seems to my ears to >>be counter productive. Any advice/experience on how to set up and use >>this feature for best results? Thanks. >>...robert ______________________________________________________________ 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
