I'm using a K3S/100 with ATU to drive a 43ft vertical with remote ATU at base. To operate, I typically bypass the K3S ATU, tune the remote ATU to 1:1 on 20m, then turn the K3S ATU to auto and tune again to 1:1 reading on the K3S. Running WSJT-X FT8 digital mode at 63W, all is fine, but if I run 100W too long I sometimes hear an alarm and turn power back to 63W (the alarm stops) or the K3S just shuts down. I'm not sure where the high-pitch alarm is coming from - I have a nearby Yaesu FP3010A Linear PSU but the manual mentions nothing about an alarm. Nor does the K3S mention an alarm. I see no High SWR warning on the K3S display. The PSU does not turn off.
Any thoughts appreciated! Bret/N4SRN -- View this message in context: http://elecraft.365791.n2.nabble.com/K3S-K3S-High-SWR-Shutdown-on-FT8-tp7632849.html Sent from the Elecraft mailing list archive at Nabble.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
