The 37 WPM jitter issue is actually related to VOX timing (with either QSK or semi-breakin). If you hold the PTT line closed while transmitting, via a foot switch, software-controlled PTT, or an external keyer like a WinKey with a PTT output, you can send as fast as you like, no CW jitter, but you give up QSK and semi-breakin. This works whether you have VOX ON or OFF.
For more details, see this post from about 4 years ago: http://lists.f5mzn.org/pipermail/support/2013-November/083384.html The new KSYN3A synthesizer is highly recommended though, especially for QRQ CW. Also, what firmware version are you running? 73, Bob, N6TV On Tue, Sep 5, 2017 at 8:19 PM, K9MA <[email protected]> wrote: > I just learned of the "37 wpm" problem with the original K3 (non-S), which > I have. I just verified that, indeed, above 37 wpm the cw gets all messed > up. This seems to occur whether in QSK (Break-in) or PTT mode. The > problem seems to go away, at least up to 50 wpm, in the QRQ mode. > > A possibly related issue is the slow QSK recovery. In the normal QSK > mode, one can just hear between the dits at 16 wpm. In QRQ mode, that goes > all the way up to 18 wpm. > > Does the new synthesizer ala K3S solve either of these problems? If not, > is there another solution? > > 73, > > Scott K9MA > > -- > Scott K9MA > > [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]

