Don, OK, I may be expecting too much. Actually, I am not sure if I was expecting as much as I was a little bit surprised by the behavior. I didn't think that the KPA500 and KX3 communicated with each other other than RF and Key line but maybe that was enough of a difference from the K3. The K3 of course in my case has the AUX cable connections with the KPA500 and KAT500.
It is not a big deal as long as this is the way it is expected to work. I was not sure if I had done something wrong or not. But, just picked up W1AW/5 MS QRP power with the KX3. Actually, it was about 6 watts. 73, phil, K7PEH On Apr 22, 2014, at 4:57 PM, Don Wilhelm <[email protected]> wrote: > Phil, > > I think you may be expecting too much. > Consider a parallel - a computer communicating with a printer. If you > suddenly switch the printer cable to another computer, would you expect the > printer to continue printing without any intervention? > > The "printer" in this comparison is the KPA500 and the two "computers" are > the K3 and the KX3. > > It is not unreasonable IMHO to expect that a reset of the KPA500 would be > required. > > If the KPA500 were simply an amplifier with no communications capability with > the driving transceiver, switching from one source of RF input to another > should proceed without regard to whatever is the driving device, but your > KPA500 is more than "just an amplifier" because it can communicate with the > K3 or KX3 driving transceiver. Expecting the KPA500 to switch data streams > from two different transceivers with no intervening reset is not realistic. > > 73, > Don W3FPR > > On 4/22/2014 7:41 PM, Phil Hystad wrote: >> So, is this normal behavior? I wasn't expecting any kind of comms between >> the K3 and the KPA500 that affects the STBY/OPER switching. It does seem >> that a power on/off cycle for the KPA500 is required to enable that switch. >> >> Is this designed to work this way or is this a flaw in the design or maybe a >> missing mini-feature of configuring two different transceivers with the >> KPA500. I admit to not scouring all of the documentation yet on the >> expected functionality of the STBY/OPER switch. >> >> 73, phil, K7PEH >> >> >> On Apr 22, 2014, at 4:14 PM, Don Wilhelm <[email protected]> wrote: >> >>> Phil, >>> >>> Let me get this straight - the KPA500 is communicating with the K3, then >>> you switch to the KX3 and the KPA500 does not talk with the KX3. >>> >>> If that is what is happening, I would expect that to be the case. The >>> communications with the K3 is not synchronized with the attempted >>> communications with the KX3, so a reset (power cycle) of the KPA500 may be >>> required. >>> >>> 73, >>> Don W3FPR >>> >>> On 4/22/2014 7:02 PM, Phil Hystad wrote: >>>> Some follow-up questions: >>>> >>>> OK, I have the KX3 and K3 configured with the KPA500 and KAT500. >>>> Everything seems to work with one little exception. >>>> >>>> The exception: >>>> >>>> --- initial conditions, K3 is on and switched to use the KPA500 and >>>> KAT500. KX3 is off. >>>> >>>> --- using K3 and so on works fine with amp on or with amp in standby. >>>> >>>> --- I turn off K3. Leave KPA500 on but in STBY mode. >>>> >>>> --- Switch coax from K3 to KX3 (1x2 switch). >>>> >>>> --- Turn on KX3. KPA500 still in STBY mode. >>>> >>>> --- Attempt to switch KPA500 to OPER from STBY but switch does not >>>> work. If I power off the >>>> KPA500 (front panel switch) and power back on then switch works >>>> fine. >>>> >>>> I have experimented with all kinds of starting initial conditions and >>>> order of events but whenever >>>> the KPA500 is left on after using the K3 and then switching to the KX3, >>>> the switch on the KPA500 >>>> to go from STBY to OPER does not work. I always have to cycle the power >>>> from the front panel on/off >>>> switch. >>>> >>>> >> ______________________________________________________________ >> 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]
