Nope, this one I remember. It depends on what is plugged into the AUXIO connector. If nothing, then the KPA will see the BAND signals all high and will assume that no K3 is connected. If a K3S is connected (or K3 with KIO3B), but off, then the same situation applies since the K3S will not pull the BAND signals to Vcc in this case. In this situation, it will then act the same as if RADIO is set to BCD and will change the band on its own in response to a band button press.
If a K3 with the original KIO3 board is connected, then the KPA will behave exactly as I described. in this case the KIO3 is pulling the BAND signals to Vcc (0V) and thus indicating 60 meters (even though it is off). The KPA will then believe the radio is active and will try to send the band info to the radio, but will not see a band change. It will thus stay on 60 meters. So, it depends on the radio, but my original analysis is actually correct. 73! Jack, W6FB > On May 14, 2021, at 11:03 AM, Andy Durbin <a.dur...@msn.com> wrote: > > "If you try this, be sure to set RADIO = BCD. If it is set to K3 (the > default), then tapping a band button results in sending an AuxBus message to > the K3, which will then change bands. With no K3 connected, nothing will > happen." > > Well my KPA500 must be broken. It changes bands with the band buttons with > neither serial port connected and no AUX data source and with K3 selected as > radio. It also changes bands with any other radio type selected. > > Time for a code inspection? > > 73, > Andy, k3wyc ______________________________________________________________ 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
