In order to try and eliminate the objectionable "noise" (careful avoidance of distortion, harmonics etc deliberate) in my headset I've fitted an LC filter with a 4kHz cut off. This would still pass odd order harmonics for lower audio frequencies. This filter has totally eliminated the annoying "noise" I was hearing with the downside that I have to run more AF gain to compensate. This kind of backs up previous measurements made by others that the harmonics are well down, and not noticeable. It's a bit disappointing that I had to do this but the headphone audio is now very nice indeed.
73 Paul. -- View this message in context: http://n2.nabble.com/Heil-Proset---K3-Audio-fixed%2C-sort-of.-tp1076341p1076341.html Sent from the Elecraft mailing list archive at Nabble.com. _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
