For the record, the error message refers to the KAT500, not the KPA500. The issue is caused by a device pulling down the Auxbus because it is powered off. You may see it with just about any device that uses this communication bus, except the KPA500.
Quite simply, the KPA can talk on the bus, but not listen. Thus, it avoids the issue. Jack, W6FB Sent from my iPad > On Aug 19, 2016, at 7:15 AM, Don Wilhelm <donw...@embarqmail.com> wrote: > > Stewart, > > It sounds like you have the XV144 JP7 jumpered and not JP8 - otherwise you > would not be able to power the XV144 on/off with the front panel switch. > With the jumper on JP8 and none on JP7, the XV144 will power itself on when > you select the 144MHz band (actually the K3 TRN address that matches the > address set into the the XV144 DIP switches). > > In order for this selection to happen, you must have 12 volts at the power > jack of the XV144 whenever the K3 is powered on. > > If you are turning the XV144 off at its power supply, then I suspect it will > load the K3 AUX signal and cause "strange behavior" in the K3. > > The solution is to leave power on the XV144 - no debugging necessary. > > 73, > Don W3FPR > >> On 8/19/2016 9:46 AM, Stewart Bryant wrote: >> I have a K3 connected to an XV144 in the preferred configuration shown in >> the manual with the AUX port used for band switching. >> >> Occasionally I find that with the XV144 powered down the K3 hangs >> complaining that the KPA500 needs to be turned on. I can cure this by >> powering on the XV144 or by disconnecting the Aux lead from the XV144. >> >> Is this a fault on one of my component's (K3, cable or XV144), a bug or a >> feature. > > ______________________________________________________________ > 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 jackbrin...@me.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
