> Perhaps NR could also be improved with more low > frequencies in the passband.
Please NO! I already run RX Audio bands 1 and 2 at -16 dB to eliminate excessive bass - no more bass, please! The hiss many seem to be complaining about is broadband noise in the audio (speaker) and/or headphone amplifier. It is more noticeable when driving low impedance loads (8/16 Ohm) due to the relatively high gain (14 dB) of the speaker amplifier and the high frequency boosting effect of the 33 pF capacitors in parallel with the gain setting (feedback resistors). 73, ... Joe, W4TV > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Roy Morris > Sent: Monday, April 06, 2009 2:01 PM > To: [email protected] > Subject: [Elecraft] K3 Hissy and Noisy Audio > > > I concur with what has been said regarding the "hissy" audio. > The receiver audio seems to be on the mid-range to high > frequency side without enough low frequencies in the > passband. Experiments with RX EQ apparently have not done > anything to eliminate this hiss, but maybe the firmware can > be adjusted to increase the low-end response of the receiver > passband. If this doesn't work, maybe a component change is in order. > > I also think the noise reduction is too sharp in both SSB and > CW. Perhaps NR could also be improved with more low > frequencies in the passband. > > Roy Morris W4WFB > K2 #2225 > K3 #323 > K3 #2810 > ______________________________________________________________ > 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
