If the ACC cable is working as expected, the KAT500 and KPA500 will both bandswitch using the 4 band data lines from the K3. The KAT500 utility operate page shows the band the KAT500 is on and it should change as you change K3 bands. In addition, relatively new K3 and KAT500 firmware can work together to bandswitch and select ATU memories as the K3 is tuned across the band. This uses the AUXBUS, one of the wires in that 15-pin ACC cable. From your description, it sounds like the band line mechanism may not be working. I'd try checking the cables and look for additional devices that may be loading the band lines. Some, including me, have found that swapping the cables can help. There aren't KAT500 configuration options to choose band line band switching. It's always on. There is a K3 menu option to choose the AUXBUS mechanism, described in K3 firmware release notes.
73 de Dick, K6KR > On Jun 14, 2014, at 16:44, Mike Hagele AC6JA via Elecraft > <[email protected]> wrote: > > I have to transmit for a brief second after I switch bands for the tuner to > switch to the new setting. I'll usually just hear a click and it's done. > But I thought I read somewhere that the tuner would update to the new > settings when switching bands/frequencies automatically without having to > transmit a carrier. > I have the Elecraft auxilliary cables and the K3 and KPA500 bands track > properly. > > Mike AC6JA > > > In a message dated 6/14/2014 4:29:46 P.M. Pacific Daylight Time, > [email protected] writes: > >> On 6/14/2014 12:11 PM, Mike Hagele AC6JA via Elecraft wrote: >> I am using a K3 and KPA500 with the KAT500. I also have the KAT500 >> mode set to MAN. I thought that the firmware was supposed to switch >> the tuner automatically when you switch bands? After I go to a new >> band, I need to tap my key momentarily to get the tuner to tune to >> the new frequency. Is this normal? Let me know as I thought the >> tuner would remember the presets when QSY'ing to a new frequency? >> Any help would be appreciated. Thanks. > > Hmmm ... I have the control cables ... K3-->KAT500/KAT500-->KPA500, > I've trained my KAT500 for all 3 antennas on all the bands that each of > them work on, and I run the KAT500 in MAN. All indications are that the > KAT500 recalls the correct solution for the frequency when I QSY to a > new frequency or band. > > I'm hardly an expert on the insides of Elecraft firmware, and I suppose > it could be recalling on very first sign of RF and doing so very quickly > so that I don't notice it, but I really don't think so. > > I do notice when changing bands that the K3 power control sometimes > takes a dit or two to settle to the correct drive power ... often that > first dit will blink the 600 [occasionally 700] watt LED. > > 73, > > Fred K6DGW > - Northern California Contest Club > - CU in the 2014 Cal QSO Party 4-5 Oct 2014 > - www.cqp.org > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
