Hi Karsten, I have found the same thing. I have bad power line noise. Sometime the K2 NB takes it all out, sometimes not. My IC-735 takes all the noise out. I get the KNB2 to work sometimes by putting the pre-amp ON, then try both high and low thresholds, and both timings. 73 de K3YT _______________________________________________ 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
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