I would agree with the ext temp compensation. It is the right thing to do and let's the onboard computer handle the drift variations for you. I don't have the xg50, which is recommended. I tried the wwv approach and that did not work, even when wwv was coming in fairly strong at s7. I watched the collection on the kx3utility and it was good on the third try, no gaps or fades that caused the beat frequency to be read incorrectly.
However, I have returned to the standard compensation as opposed to what I attempted to do with wwv and the extended temp compensation. I did it three times and all results were worse than the standard. I will try to build a stable frequency oscillator or perhaps purchase the xg50 so I can do the temp compensation properly. The standard compensation seems to work ok. There is still drift, but not as bad. Once the oscillator has warmed up, the standard compensation seems to do a decent job. But, my experience is like yours, I can see the drift on the wsjtx program waterfall and in some cases it is 8-11hz. I have to pay attention when I run wsjtx as the person I am calling may not answer me on the frequency I answered them on. P.S. My clock is set from the Internet and I am not sure how that equates to drift that one sees on the waterfall. Most of those I return a call to are only out by 0.2 - 1.2 seconds. The clock sync doesn't seem to have anything to do with drift that one sees on the waterfall. But I am prepared to be educated if someone can demonstrate drift to time sync correlation. Regards Brian VE3IBW On Monday, 25 April 2016, Don Wilhelm <donw...@embarqmail.com> wrote: > Keith, > > Have you done the Extended Temperature Compensation procedure on that KX3? > If not, you should do that. It should reduce that drift due to > temperature significantly. > > 73, > Don W3FPR > > On 4/25/2016 6:34 PM, Keith Onishi wrote: > >> I am experiencing some frequency drift on operating JT65 with KX3 + >> KXPA100. I was reported that my signal drifted 5 to 8Hz drift during my >> transmission and noticed almost same amount of drift during my receiving >> period. >> Output power was 20W with KXPA100. OSC temp shows 36C on receiving and >> 39C on transmitting. >> >> > ______________________________________________________________ > 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 brian.waterwo...@gmail.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
