The K4 defaults to K3/K3S auxbus protocol, ensuring compatibility with a KPA500, KAT500, or KPA1500.
It will only use the new protocol if the amp or tuner has been configured to use K4 mode. 73, Wayne N6KR > On Jul 19, 2020, at 7:33 PM, AL7CR <al...@mooseaviation.com> wrote: > > Can you please confirm this means, at present, that the K4 does NOT interface > with the KPA 500 and KTA 500 via the Auxbus. If so, that is a major > disappointment. I presume operation is still possible in the frequency > sensing mode as it is with non Elecraft amps. Just writing that last > sentence makes me sad. > > I would have thought the K4 would have shipped with a K3 compatibility mode. > Surely I am not the only one considering replacing my K3 with a K4 and > expecting not to lose capability. It is also a bit sad that, if I understand > correctly, you only HOPE to add compatibility in the near future. There must > be more KPA/KTA 500 out there than KPA 1500 by a huge margin. > > AL7CR > > > > On Sun, Jul 19, 2020, at 1:52 PM, Wayne Burdick wrote: >> Those using a K4 transceiver with our KPA1500 amp will have the >> advantage of +/- 1 kHz resolution in VFO tracking. In many stations, >> this finer resolution will result in lower SWR and improved amplifier >> performance, especially on the lower bands. (The original resolution >> was +/- 8 kHz.) >> >> This is part an overall upgrade of our Auxbus control interface, taking >> advantage of the additional processing resources available in the K4. >> The revised protocol allows for more robust RFI rejection, as well as >> future enhancements to amp/tuner control. >> >> At present only the KPA1500 supports radio type K4, but we hope to add >> this capability to the KPA500 and KAT500 in the near future. >> >> All amps and tuners will continue to support the original Auxbus >> protocol, remaining 100% compatible with our existing transceivers. >> >> 73, >> Wayne >> N6KR >> >> >> >> >> >> >> >> ______________________________________________________________ >> 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 >> Message delivered to al...@mooseaviation.com >> > ______________________________________________________________ > 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 > Message delivered to n...@elecraft.com ______________________________________________________________ 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 Message delivered to arch...@mail-archive.com
