I checked this. Voltage was 13.8 volts no load, dropped about a volt under load.
I cranked it up to 14.4 volts no load, and it’s better, but still getting HI CUR indication above 90 watts. > On Jan 11, 2020, at 11:43 AM, Bob McGraw K4TAX <[email protected]> wrote: > > Is the power supply at 14 volts or so? And what does the radio show the > voltage to be in key down transmit into a dummy load. Low voltage will > demand more current to produce 100 watts. > > I run my supply at 14.25 V no load and the radio shows 13.8V during 100 watts > transmit. Voltage drop should be 0.5 volts or less. > > Bob, K4TAX > > > Sent from my iPhone > >> On Jan 11, 2020, at 10:31 AM, Bill Coleman <[email protected]> wrote: >> >> Back in early December, I installed two KSYN3As in my K3 SN 7071. Sometime >> after that, I noticed that on 12m, I’m seeing a HI CUR indication when I set >> the power level to more than about 80-85 watts. The K3 will back off on the >> power level, then slowly ramp back up until it hits HI CUR again. >> >> I don’t remember seeing this before. After the KSYNC3A install, I ran the >> transmit gain calibration at both 5 and 50 watts, as specified in the >> instructions. Just in case something went awry, I ran it again. >> >> I’m still seeing this problem. What causes HI CUR at 85 watts? The K3 ought >> to be able to produce over 110 watts on 12m. >> >> I’m not seeing this issue on other bands. >> >> No issues with calibration >> Bill Coleman, AA4LR, PP-ASEL Mail: [email protected] >> Web: http://boringhamradiopart.blogspot.com >> Quote: "Not within a thousand years will man ever fly!" >> -- Wilbur Wright, 1901 >> >> ______________________________________________________________ >> 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] > > Bill Coleman, AA4LR, PP-ASEL Mail: [email protected] Web: http://boringhamradiopart.blogspot.com Quote: "Not within a thousand years will man ever fly!" -- Wilbur Wright, 1901 ______________________________________________________________ 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]
