Is it normal that (according to Spectrogram) my new KDSP2's
filters have sharper skirts and far less ripple than the XFIL filters?
Almost all the ripple you will see in a plot with spectrogram is the
rippler from the crystal filters. The DSP filters have very little
passband ripple of their own.
The skirts for most of the filters fall off sharply in a couple hundred
Hertz. The skirts for the CW "soft" positions are a bit gentler.
73,
Lyle KK7P
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