I agree Wes, way too much ringing for my taste. I have never cared for the ultra narrow filters myself. I listened using the APF on 80 cw last evening, works well but the distortion certainly hurts the copy.
Jim K4JAF ----- Original Message ----- From: "Wes Stewart" <[email protected]> To: "Elecraft Reflector" <[email protected]>; "JAMES ROGERS" <[email protected]> Sent: Thursday, November 04, 2010 9:57 AM Subject: Re: [Elecraft] APF Results at an Old Timer's shack To this old dog's ears there is way too much ringing. Even in my EME days I never felt the need for these super narrow filters. I used a passive 200 Hz wide filter centered on 600 Hz. A few hours of listening to noise in a too-narrow filter and you start hearing things that aren't there, especially with some distortion thrown in, and ringing is distortion. Today I prefer a lower beat note (~450 Hz) and a couple of hundred Hz BW is fine most of the time. Wes --- On Thu, 11/4/10, JAMES ROGERS <[email protected]> wrote: Well, I just wasn't sure I would use it, I had such good results with just the DUAL PB function. So I sought out the weakest signal I could find this morning, R5ZZ, who was not copiable here, but I could hear some Ws working him. I dialed in the APF and there he was, and copiable. So mea culpa. I am now a convert. Old Dogs can learn new tricks. 73s Jim, W4ATK JIM ROGERS [email protected] http://web.me.com/jimrogers_w4atk ______________________________________________________________ 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
