[Elecraft] DSP and CW

[Lyle Johnson]

Hello Ian!

> I am trying to get back into CW and the filters are really odd.  If I
> bypass the DSP, everything works as I would expect.  I can zero beat
> using the spot button and the filters are fine.  If I have the DSP in, I
> cannot get the CW note down to the spot frequency and if I alter from
> FL1, I lose the signal.  Any ideas guys?  I am assuming it is a DSP
> problem as it is ok with the DSP bypassed.

The DSP only inserts audio filtering in the path between the receiver 
detector and the audio amplifier.  Your description causes me to suspect 
that the DSP filter settings are not matched to your desired 
sidetone/XFIL offset.

Try setting the KDSP2 to its widest audio filter setting for CW, and be 
sure the denoiser is set to OFF.  This should cause the DSP to have very 
little effect on the receive path.  If this works, you can then set the 
various DSP filters to your liking.  This filter setting is the factory 
default "CF1".

Lyle KK7P