Bruce; Did you ever resolve the issue?
The KPA500 and KPA1500 send events to the K3, not commands. The distinction is important - an event simply reports a state change in the amplifier. It is up to the K3 to decide what to do in response, if anything. Thus when tapping a and button the KPA simply sends an event indicate that the button had been tapped, the K3 receives that and decides to do a band switch (if needed). The fact that the K3 is indicating a response (in the VFO B display) says the K3 is indeed receiving the event properly. That means the KPA1500 is working properly, so the issue is in the K3. Since the K3 sets the correct power for the KPA OP mode, it should be expected the the K3 is also selecting the high power setting when the KPA indicates that it is in STBY mode. The is the same power level that would be used if the K3 is powered up with the KPA left turned off. From personal experience I have many times found the power not to be what I expected after some special operating activity, like Field Day where we run just 5 watts. Turning the Power knob usually fixes the problem quite nicely. 73! Jack, W6FB Elecraft Engineering > On Oct 18, 2020, at 9:28 AM, ockm...@gmail.com wrote: > > YES, when switching the KPA1500 between OPER and STBY, the K3 displays the > messages "KPA500 OPERATE" and "KPA500 STANDBY", depending. > > > > YES, the K3 is set CONFIG: POWER SET is Per Band. > > > > YES, when in STBY on the KPA1500, I set the "no amp" power to 100 watts, and > when in OPER, I set drive level per band; usually less than 30 watts, which > gets close to the legal limit. > > > > Still the same results as described below. > > > > 73 de Bruce, N7TY > > Yuma, AZ > > <http://www.qsl.net/n7ty> www.qsl.net/n7ty > > > > From: ockm...@gmail.com <ockm...@gmail.com> > Sent: October 18, 2020 06:32 > To: 'elecraft@mailman.qth.net' <elecraft@mailman.qth.net> > Subject: KPA1500 / K3 Mystery > > > > I made a recent change to the "Band Change-> STBY" setting on the KPA1500, > changing from NO to YES. I did this to ensure the AMP doesn't have any wild > SWR or PWR spikes before the ATU has a chance to "remember" it's setting > after a band change. > > > > Issue: When switching the AMP from OPER to STBY, the K3 is supposed to > switch from the drive power setting (~25 watts) in OPER, to 100 watts in > STBY, it does not, it remains at the drive power setting. I am 99% sure I > have all the cabling and settings set correctly in the K3 and KPA1500. I > went through and manually reset the power settings on each band to let the > K3 and KPA1500 "re-learn" the change made, however, still no joy. > > > > Jim, W6YA, and I have been going back and forth, however neither of us have > had any luck. > > > > Do you KPA1500/K3 owners out there have any ideas or suggestions? > > > > 73 de Bruce, N7TY > > Yuma, AZ > > www.qsl.net/n7ty <http://www.qsl.net/n7ty> > > > > ______________________________________________________________ > 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
