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" <[EMAIL PROTECTED]>
To: <elecraft@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 <[EMAIL PROTECTED]> 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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