On the K3 (probably common code with the KX3) the bandwidth knobs also seem to be ignored during transmit. I often use the K3 for PACTOR which is rapidly changing between transmit and receive. Sometimes I find I have not properly set the bandwidth before starting the PACTOR connection and need to adjust it on the fly. Other times, with weak PACTOR stations, I want to quickly change receive bandwidths to track the various PACTOR modes (which are changing real-time) to improve reception. Depending on the QRM, this sometimes makes the difference between holding a connection or not.
So, having the bandwidth knobs unresponsive during transmit and not optimally responsive at other times makes doing the above very hard. I have a KX3 on order which I also want to use for PACTOR and other ARQ modes. Even with the one knob (KX3) vs two knob (K3) difference, I think my comments will probably apply to both radios. The K3 is still my favorite radio, by a large margin. 73, Bob, N7ZO. -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Wayne Burdick Sent: Monday, September 24, 2012 9:32 AM To: Howard Hoyt Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] KX3 PBT Howie, I may be able to make the control more responsive. Meanwhile, you might experiment with the NORM function as a means of switching between two different width settings. Holding NORM will alternate between the default (400 Hz in CW mode) and a "floating" setting that you establish. 73, Wayne N6KR On Sep 24, 2012, at 8:29 AM, Howard Hoyt wrote: > I have been twisting the KX3's PBT I/II knob madly in an attempt to > change BW or CF rapidly, but in reality when I turn it more slowly the > function actually changes more rapidly. Two possible explanations are > either the encoder pulse rate exceeding the I/O refresh rate, or the > speed with which the filter DSP can reconfigure. > > I would love to be able to change CF and BW more rapidly, being > spoiled by the instantaneous response of my old Drake R-4B's analog IF > parametric filter. If the speed limitation with the KX3 is indeed a > refresh issue, is there a way to increase the I/O refresh rate for the > PBT encoder to allow for faster filter change via the knob? Of course, > if it is a DSP horsepower issue, it is what it is. > > The overall performance of the KX3's receiver is so far superior to > the R-4B, I don't want to use the R-4B much any more (well for that > reason plus tube, old capacitors, size, power requirements and other > issues, but that is another story). > > Howie - WA4PSC > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net Please help support this email > list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
