Hi Bill, I too suffered from issues as you are now with my KX3. Into a dummy load I was getting high SWR numbers. I have been so busy at work that I haven't had the time to find the fault, but what does seem to work for me is not to tighten the case bolts too tightly. Looser is better, but not so loose that the rear legs are flopping about. When I relieve the tightness on these bolts, SWR values always settle around 1.0-1.2 depending on the antenna. Too tight and SWR jumps up to between 3-15. This sounds to me like a bad ground somewhere. Just haven't had the time to investigate.
Another time that I had the types of SWR you are observing (25+, even 45+ for me), a few years ago, I had to send the KX3 back to Elecraft and they repaired something. I am not at home now so I can't recall specifically what they repaired. The prevailing theory of the issue was perhaps a static discharge from the antenna during the winter months when I connected the KX3 one day. This was my first experience with static discharge in the antenna system, assuming that was the problem that fried one of the components in the KX3. Again, can't recall which component (actually a surface mount chip on one of the larger components), but it needed to be replaced. regards, Brian VE3IBW On Mon, Jun 18, 2018 at 8:42 PM Bill Frantz <fra...@pwpconsult.com> wrote: > Thanks for reminding me to look at dumb things. > > Yes, the BNC was pugged into the tuner board. Note that the > radio has been working well for a while. I ran FT8 in New > Hampshire using it in April/May. The most recent venture into > the inside was to pull the batteries to recover from a hung > firmware load. That load worked after getting other programs and > the PX3 out of the way. > > 73 Bill AE6JV > > On 6/18/18 at 5:29 PM, ghyoung...@gmail.com (Grant Youngman) wrote: > > >Probably a dumb question, but did you unplug the jumper from > >the BNC connector to the main board and plug it into the tuner board? > > > >Grant NQ5T > >K3 #2091, KX3 #8342 > > > >>On Jun 18, 2018, at 8:04 PM, Bill Frantz <fra...@pwpconsult.com> wrote: > >> > >>AE6JV > > > > > ----------------------------------------------------------------------- > Bill Frantz | Truth and love must prevail | Periwinkle > (408)356-8506 | over lies and hate. | 16345 > Englewood Ave > www.pwpconsult.com | - Vaclav Havel | Los Gatos, > CA 95032 > > ______________________________________________________________ > 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 brian.waterwo...@gmail.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
