[Elecraft] DSP: More Questions and Request for WAVE files

[Lyle Johnson]

Hello Jim!

> 1. Why doesn't the auto-notch work in CW mode?

If it did, then it would have to delay for a second or so before it became
effective so it wouldn't notch out the CW signal you were trying to hear.

I chose to make it work immediately.  On CW, you can tighten the bandwidth
to get rid of heterodynes.  On SSB, you generally can't, so having the notch
work immediately seemed a reasonable choice.

> 2. Why is the Noise eliminator off by default in CW mode? Does
> this imply that it works better in SSB than in CW mode?

It is off by default in SSB, too.  You just tap a button to toggle it on and
off, in either mode.

It works fine in CW.

> 3. KAF2 has a very pleasing sound in that hiss etc is removed. Is
> this in part a function of the "soft slopes" of the audio filter?
> Does the KDSP2 have a similar pleasing sound?

Some operators think the KDSP2 "soft" filter settings at around 200 - 300 Hz
bandwidth have a similar sound to the KAF2.

73,

Lyle KK7P