[Elecraft] K3 CW Rx Audio

[Bob Cunnings]

Ok, that's the part that escaped me - that you wanted to go beyond the
2.8 kHz limit. The original message spoke only of "opening up",
without elaboration. Now it all makes sense.

Bob NW8L

On Mon, Apr 21, 2008 at 9:03 AM, Paul Christensen <w9ac at arrl.net> wrote:
> Bob,
>
>  This has been re-hashed before by myself and others but here goes...
>
>  The K3's CW receive bandwidth is presently limited to no greater than 2.8
> kHz, even when the optional 6 kHz filter is installed.  At the moment, the
> DSP is the limiting factor.  I would rather not re-visit the rationale for
> wanting a wider CW receive bandwidth as that is covered in detail within the
> list archives.
>
>  The procedure that I described is a means of opening up the receiver beyond
> 2.8 kHz while being engaged in a CW QSO.  Simply put, it allows the use of
> SSB mode with an offset for CW reception (VFO A), while using CW mode ( on
> VFO B) for transmission.
>
>  73,
>
>  Paul, W9AC
>
>  ----- Original Message ----- From: "Bob Cunnings" <bob.cunnings at gmail.com>
>  To: <elecraft at mailman.qth.net>
>  Sent: Monday, April 21, 2008 10:27 AM
>  Subject: Re: [Elecraft] K3 CW Rx Audio
>
>
>
>
>
> > Ok, as it is now you can open up CW rx all the way to 2.8 kHz if you
> > like with the 2.7 kHz filter installed - and *enabled* for CW mode.
> >
> > Do you have the 2.7 kHz filter enabled for CW mode? If not, then I can
> > understand the need for this split setup to "open up the DSP filters"
> > for CW rx. Since filters are enabled on a per-mode basis, things can
> > get a bit confusing.
> >
> > Bob NW8L
> >
> > On Mon, Apr 21, 2008 at 6:44 AM, Paul Christensen <w9ac at arrl.net> wrote:
> >
> > >
> > > > In the CONFIG menu, there is a SPLT SV entry which you can turn ON to
> > save
> > > the split. I just tried it on #202 with latest firmware and it works
> > > here.73, Ken K3IU
> > > >
> > >
> > >  Ken,
> > >
> > >  Good job.  With that suggestion, the entire procedure I mentioned
> > > (including split recall) is now automated by saving into memory. (almost
> > > like a macro?) Even better, by activating SPLT SV as you mentioned, one
> can
> > > band hop and go right back to the saved split settings without having to
> > > recall the memory. For example, I had called the CW Rx split procedure
> as I
> > > described for 40M -- then tuned around on 20M SSB for a while and came
> back
> > > to 40M where all settings were brought back with the just the band
> change
> > > button.  Even tried powering down the rig, and all settings came back at
> > > power-up.
> > >
> > >  Probably the only distraction with the procedure is that the lower,
> smaller
> > > frequency display becomes the "real" operating frequency for CW off-set
> > > purposes.  Oh, and CW spot will not work this way either.  So, opening
> up
> > > the DSP filters in a future f/w release for CW Rx mode is still the
> > > preferred way of accomplishing this.  Still, the flexibility to
> accomplish
> > > this in the K3 and still retain all the QSK attributes is damn
> impressive.
> > >
> > >  Paul, W9AC
> > >
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