Hi John, My KX3/KXPA100 has experienced the same symptom. The problem ended up being that the short CAT6 cable with the RJ45 connectors on each end was not making a good connection at the PA end. The small plastic 'locking tab' on the RJ45 connector had been accidentally broken off (by me) long ago, and for years the connector had enough friction to remain seated in the PA. Until one day it didn't. I replaced the cable with a short cable I had lying around, and it has been fine ever since.
Best of luck troubleshooting. 73, Dale - WA8SRA On Fri, Jan 24, 2025 at 8:44 PM John Overbaugh <k7jto.j...@gmail.com> wrote: > I have a KX3 and the KXPA100 with the KXPA to KX3 Connector Cable. I have > been radio "inactive" for several months and noted recently the KXPA100's > power switch was set to on. For quite some time, I kept hearing a recurring > tick and only realized a week ago that the KXPA100 was turning on and off > every so many seconds. > > Fast forward to this evening and I'm setting back up because, like the > procrastinator I am, I'm participating in Winter Field Day tomorrow (from > home, long story). I better get ready, right? I connected the KX3 and the > KXPA100, did all the things, powered on the KX3 and switched PA Mode to > "On" and exited the menu. A few seconds later, it switched out of PA mode. > Back and forth I played that game 4-5 times and then stepped back... > > - The 2.5mm tipped cable was pinched in between a case and its cover, > but doesn't appear to be broken. > - I checked the pinouts based on the Cady book and I have continuity in > all lines > - I connected the KXPA100 via USB serial cable and launched the KXPA > utility. There are a number of fault codes, but none that appear when > this > switches off > - No fault code appears on the "Operate" tab either > - It just... switches off > > Am I overlooking something obvious? It's been 100% reliable for me for a > good 5 years now, so I'm really unclear what could be happening. > > Thanks in advance, > John O. > K7JTO > Layton, UT > ______________________________________________________________ > 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 dmbor...@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
