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
