AGC settings and AF gain interact. With no signal you may have lots or little audio. Also, full audio can be at 20% of 50% gain.
When looking at the spectrum of a CW signal one clearly see the third and the fifth harmonics. Not sure whether they are real or artifacts of a sound card but K3 sounds a bit harsher than K2. These harmonics were part of a thread here by hams from the UA land; it was followed by the AF mod.. I am not sure whether my radio has already this fix(# around 2200). Ignacy I have very sensitive in-ear monitors. The K3 (and the Orion, and possibly other radios) has significant hiss. I inserted an attenuator and knocked the hiss down below my ability to detect it. There is plenty of audio range remaining. You may find 10 to 20 dB will help. ______________________________________________________________ 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 -- View this message in context: http://n2.nabble.com/My-K3%27s-hissy-and-noisy-audio-tp2588008p2592780.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ 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

