The first thing to do is run TX GN CAL. That usually stops the spikes. My K3 #2254 began needing that every few months, and sometimes I had to run TX GN CAL multiple times. Eventually, at Wayne's suggestion, I sent it in for repair. They found some burned resistors in the LPA SWR circuit, which were replaced. I haven't tested it yet, because, you know, my K4D arrived. :-)
73 Eric WD6DBM On Sat, Jan 21, 2023, 12:47 PM David Olean <[email protected]> wrote: > I have #1504 and it does not add any spike ever. I have no idea what > would cause a spike. Does this happen on CW? > > Dave K1WHS > > On 1/19/2023 5:55 AM, Mikael Larsmark wrote: > > Hi, > > > > I have 5 pcs Elecraft K3 in my shack and one of them, which is a very > early > > model (serial #1938) suffers from quite a power spike when transmitting. > > You can clearly notice it on the amplifier and it is only this K3, none > of > > the others. > > > > Can somebody give me some insight on this? > > > > /Mike, SJ2W > > ______________________________________________________________ > > 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] ______________________________________________________________ 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]
