If I may throw my two pennies into the discussion - I use medium quality amplified speakers on my K3, and with the speaker amplifier turned up and the K3 connected to a dummy load, I hear no evidence of any "hissy" receiver noise - very quiet. My conclusion from that is the "hissy" sound is not from the K3 internal noise. BTW, the internal speaker is difficult for me to listen to, but that is the fault of the speaker and not the K3 audio.
When I connect an antenna, I hear sounds that are directly related to the DSP bandwidth I have dialed in (only the 2.7 kHz filter in this K3), and also related to the AGC parameters that I have selected.. Sometimes the band noise is objectionable, but what I am saying is that is band noise and not K3 noise. There was a change to the AGC in firmware MCU release 3.03 that in crowded band conditions could be interpreted as "hiss" or "muddiness", and I would encourage those who are hearing "hissy audio" to try an upgrade to the latest beta level firmware. 73, Don W3FPR Ralph Parker wrote: >> ...the K3's audio was hissy and sharp and not nice and smooth. >> We could hear it using the built-in speaker as well as on a Heil Pro Set >> > > I think so too. > The high hiss level is the thing I like least about my K3 :-( > > VE7XF > (retired after 45 years of sound recording) > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html