Hi Don: Actually, my issue is only on 10M. It appears that as I transmit, current consumption increases, and I get occasional high current messages. This is more apparent on long duty cycle modes like RTTY, and at higher power levels (80-100W). If I watch, I can see current consumption start at 16 amps, and slowly rise to 25-27 amps.
I performed a TX gain Cal successfully, and that made it a bit more stable (only rising to 20 or 21 amps now), but it still concerns me. A friend suggested this may be blown coils in the output bandpass filters. I can wrap new coils if needed, but don’t want to do this if that’s not the problem. 73 Harv K2PI Sent from Mail for Windows 10 From: Don Wilhelm Sent: Wednesday, December 19, 2018 9:44 AM To: Bob Harvey - K2PI; [email protected] Subject: Re: [Elecraft] k3 High Current Message on 10 meters Harv, I did not see the initial post (fault of Nabble vs. the real Elecraft reflector), but High Current messages can be caused by a low impedance at the antenna connection, or also a fault in the KPA3, like one output transistor that is no longer functioning properly. There are other causes, like incorrect bias to the PA transistors. Without more specific observations, it is difficult to give a specific answer. Have you tried a TX Gain Calibration on your K3/K3S? If not, try it. 73, Don W3FPR On 12/19/2018 9:30 AM, Bob Harvey - K2PI wrote: > John did you ever get an answer to this? I have a similar situation. > > 73 > Harv > K2PI > > > > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > ______________________________________________________________ > 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]
