That is woefully unacceptable voltage regulation... you have an issue. I believe the MAX spread on the K3 is 11-15 VDC IIRC.
______________________ Clay Autery, KY5G MONTAC Enterprises (318) 518-1389 On 6/20/2016 12:33 PM, James Walker 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 > <[email protected]<mailto:[email protected]>> 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:[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]
