Cannot say what Rons definition of the noise is, but mine is the higher pitched sound of the radio without QRN and a noise level of S1 to S2 on the meter, but I find its easy to find a comfortable listening "pitch" by just using the shift and a couple clicks down the passband and the high pitch is gone. For instance the FC* on mine says .60 and if I move the shift down to .50 or .40 the high pitch is gone. Have never found a setting on NR that has worked for me, others have better luck. 73 Merv KH7C > A precise definition of what you mean by "atmospheric noise"? And were you > talking about effectively "rolling off" higher frequencies or were you > talking about cancellation? > > One definition of "atmospheric noise includes both close and distant > lightning static or QRN, including from another continent. > > In all my years I have never seen a verified reduction of signal-to-noise > from QRN that didn't amount to reducing bandwidth, which still works no > better now than it did in 1955. > > Careful work with levels and SNR always exposes the truth from "sounds > better". Sounding more "pleasant" does not mean you will communicate better > in a contest. You'll just feel better doing the same thing. > > Not that I haven't been listening and hoping all that time. PLEASE, PLEASE > don't prove me wrong! > > 73, Guy. > > ----- Original Message ----- > From: "Ron Edmon" <[email protected]> > To: <[email protected]> > Sent: Friday, June 19, 2009 10:40 PM > Subject: [Elecraft] DSP and IF Filters > > > >> I have been going through the manual on the K3 trying different combination >> of DSP and IF as well as NR filters trying to reduce atmospheric noise. I >> find the noise level to high pitched which fatigues me after an hour or so >> of listening. I've listened to the "Hear It" external DSP filter employed >> on a friends ten-tec rig and the reduction of atmospheric noise is >> significant (1 "S" unit or better). Shouldn't the K3 DSP filter be >> capable >> of reducing the atmospheric noise to acceptable levels? >> >> Ron, N6SC >> >> >> ______________________________________________________________ >> 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
