Good to know, Dave. I hope to test mine soon, but your results are reassuring. 73, Phil Dave-KK7SS wrote: >I just ran Spectrogram on my KX1 #13, >I used the Elecraft Noise generator as a source, >With CW as the mode; >the narrowest setting gives me a peak at 590 Hz. >mid range has a 5db dip at 800 Hz > > > >