Perhaps outdoors you have had a ground go bad, or a connector go bad, to all of a sudden have RF in the shack. Connection work loose, that kind of thing. These could happen without your seeing SWR on the line you are transmitting on.
73, Guy K2AV On Tue, Nov 22, 2016 at 8:53 AM, Michael Walker <[email protected]> wrote: > I run a remote base with a KPA500. The Amp is a 3 hour drive away. > > I can control just about everything remotely without effort. The > installation has been rock solid for years (Flex 6300 / KPA500) and lots > of chokes everwhere. > > Last week the unit worked fine. Today the KPA500 appears to shut down > based on the Remote GUI. > > I will be on SSB, and then I see the bar at the bottom go to PWR OFF, reset > and go back to Powering ON/ Amp On. This is when the amp is only producing > about 300 watts peak (about 24 watts drive). > > There are no error messages displayed at all and the only thing I suspect > it might be is low AC voltage into the amp. > > RF could be the problem, however in 2 years running contests, this is the > first time I have seen a shutdown like this. I run many Mix 43 chokes on > all coax and signal lines. > > Are there other messages I can see by monitoring the Serial port at all? > Any thing else I can do remotely? > > I can recreate this on 160/80/40m. Those antennas are at least 150 ft from > the station. > > Also, at times, the GUI will seem to freeze. The buttons work, but the bar > graphs are stuck frozen in time at a peak reading. Yet, I can power off > the amp when this happens. > > Currently, the amp is about 34F ambient temp. In the past, I have used it > well below that (-25F) without issue (last winter). > > My question is to the Elecraft guru's. Any thoughts? I am trying to > retrieve more data from the KPA500 remotely. > > Mike va3mw > ______________________________________________________________ > 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]
