Paul, I hate to disagree with you and others but, I would not want the DSP to go any wider than 2.8 KHz in CW unless there is a way to limit the DSP to the width of the enabled filters.
As it stands now, if the radio has 12 or 6, 2.8. 1.8, 500 and 200 filters installed - the CW DSP goes out to 2.80 even if FL2 (the 2.8) is disabled. That leaves a lot of useless "cranking" on the width control. IMO, extending the DSP bandwidth in CW should be done only if accompanied by restricting the maximum width to that of the widest ENABLED roofing filter. 73, ... Joe, W4TV > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Paul > Christensen > Sent: Monday, April 21, 2008 11:03 AM > To: Bob Cunnings; elecraft@mailman.qth.net > Subject: Re: [Elecraft] K3 CW Rx Audio > > > 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 > >> > >> _______________________________________________ > >> Elecraft mailing list > >> Post to: Elecraft@mailman.qth.net > >> You must be a subscriber to post to the list. > >> Subscriber Info (Addr. Change, sub, unsub etc.): > >> http://mailman.qth.net/mailman/listinfo/elecraft > >> Help: http://mailman.qth.net/subscribers.htm > >> Elecraft web page: http://www.elecraft.com > >> > > _______________________________________________ > > Elecraft mailing list > > Post to: Elecraft@mailman.qth.net > > You must be a subscriber to post to the list. > > Subscriber Info (Addr. Change, sub, unsub etc.): > > http://mailman.qth.net/mailman/listinfo/elecraft > > > > Help: http://mailman.qth.net/subscribers.htm > > Elecraft web page: http://www.elecraft.com > > > > _______________________________________________ > Elecraft mailing list > Post to: Elecraft@mailman.qth.net > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
