I'm offering this just on the off-chance you haven't tried it. Sometimes the noise level that roars out of the speaker with the AF gain turned up really isn't strong enough to trigger the NB even at low threshold levels. In that case, turning the Preamp On (and turning the audio gain down) often causes the noise to disappear!
I wonder if your friend had his K2's preamp on and you didn't when you ran the side-by-side test? A lot of operators leave the preamp on all the time. The K2's design allows that to be done without any obvious problems in most situations. Ron AC7AC _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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