I wanted to say thanks to Jack for spending time after hours analyzing my KPA500 log and providing some detailed analysis.
While I haven't solved the problem yet, I have enough clues that possibly support my theory of a bad AC supply line. I will likely get to my remote base over the weekend, so I should have the next clue on why it fails by then. It is thanks to the support of Elecraft that I buy their product. In fact, when it comes to HF, I only use US manufactures for radios and supporting products. That is because they all provide amazing service! Mike va3mw On Tue, Nov 22, 2016 at 2:04 PM, Guy Olinger K2AV <[email protected]> wrote: > 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]
