What is the point of insertion (in terms of the schematic) for this filter?
Bob NW8L On Fri, Jul 3, 2009 at 6:09 PM, Brett Howard<[email protected]> wrote: > Its a low pass filter starting around 3.8Khz or so. I have some before > and after plots. I just need to get around to posting them so I can put > them up on the reflector. > > On Fri, 2009-07-03 at 19:45 -0400, Mike Harris wrote: >> G'day, >> >> | All in all I'm quite pleased with the sound difference. >> | >> | ~Brett >> >> OK, that's couple of positive comments. Is there any technical data on >> the characteristics of this filter. For example, does it in any way >> respond to the "pink" vs. "white" noise thread of a few weeks ago. >> >> I've become rather more interested in this since reactivating my K2 and >> running it side by side with the K3. The K2 sounds so much nicer even in >> the presence of a received S3 buzzy background noise. If only the K2 >> power overshoot on 40M SSB didn't give my amp a hard time... >> >> Now to put this in context, there was a huge improvement in the K2 as soon >> as I installed the analogue af CW filter years ago. In SSB mode the >> filter just introduces a low pass filter which takes the hiss out of the >> audio and made it really smooth to listen to. >> >> I have played with the DSP bandwidth settings and replicated the K2 af >> spectrum as displayed in Spectrogram to see if I can make them sound the >> same but they don't. >> >> My agc and equalizer settings are nothing unusual or extreme. >> >> Regards, >> >> Mike VP8NO >> K2 #1400 >> K3 #345 >> >> ______________________________________________________________ >> 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
