James - The first thing I would do is check the voltage at the K3. If you have a long run of cable from your PS, of if you have connectors that are not fully seated, or correctly installed, that would likely result in voltage drop that would be detrimental.
Best of luck es 73 de Dave - K9FN On Mon, Jun 20, 2016 at 1:33 PM, James Walker <jimmy.wal...@outlook.com> wrote: > This thread has lead me to notice the comments on operating voltage. I’ve > been having some trouble with my K-3 and the MCU LD message on startup. It > was suggested that I monitor the voltage on the rig during operation. I get > the 13.5 on receive. But the voltage drops as low as 10.5 on 100 watt > transmit. I have an Astron power supply that is rated at 35 amps, very > conservative for this usage. I have used it to power 100 watt rigs in the > past with no problem. > > Is it normal to register voltage as low as I’m seeing on my K-3? The power > supply has meters for amps and volts and the voltage indicated during power > cycles is unchanged. So it appears the voltage drop is at the rig. I can > ever see dimming of the dial light in some situations. I don’t think the > power supply is failing since I don’t notice these symptoms with any other > rigs. And no, I never use the power supply for more than one rig at a time. > > Jimmy Walker > WA4ILO > Macon, GA > > On Jun 20, 2016, at 1:09 PM, Clay Autery <caut...@montac.com<mailto: > caut...@montac.com>> wrote: > > Mine IS one of the newer ones that was originally 14.19 VDC. I > learned where the pot was at HAMCOM, and the first thing I did when I > got home was adjust it to provide the K3s 13.8. > > ______________________________________________________________ > 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 dpbu...@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
