I’ve never found the K3 NR very useful. But this morning, I was trying to hear VP8PJ on CW through a humongous wideband radar (or something) signal that was running over S9. The IF NB didn’t do anything against it, and the DSP NB just helped a little. I found that opening up the bandwidth to about 2.2 kHz and setting the NR to F1-3 knocked the radar down enough that I could copy him!
Unfortunately, it didn’t make him able to hear me over the loud US pileup, but I was surprised that the NR was so effective in this situation.
Victor 4X6GP
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