Bill,
Is this into a dummy load (bypass the ATU or tune the ATU into the dummy
load).
If it is into an antenna, there are a whole lot of guesses about how the
antenna behaves with higher power levels than your antenna analyzer
shows. So check it with a dummy load to eliminate the possibility that
the problem is in the antenna.
Put an external wattmeter in line with the dummy load to eliminate
questions about the calibration on the K3 wattmeter.
If you can measure the actual current drawn, that would also be helpful.
73,
Don W3FPR
On 1/11/2020 11:18 AM, Bill Coleman 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
______________________________________________________________
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
