I posted various solutions to the K3 element shortening issue about 7 years ago. See this link on my QRZ.COM page <https://qrz.com/db/n6tv>:
- How to get clean fast CW from an Elecraft K3 without using CW QRQ mode <http://lists.f5mzn.org/pipermail/support/2013-November/083384.html> (post to Win-Test Reflector, November 14th, 2013) This was before the KSYN3A upgrades, which only helped the keying problem a little. Element shortening is still there, and bad CW jitter is still present in the K3 + KSYN3A at speeds above 37 WPM with external keying. The internal K3 keyer sounds fine (it compensates), but external keying is a problem. With VOX ON (QSK or semi-breakin), no PTT input, all keying elements are shorted by the TX DLY. The default TX DLY nor 008 is really closer to 6 ms delay, after you get the KSYN3A upgrade, hence 6 ms of keying compensation required. A high TX DLY for a slow amp. relay makes the problem much worse. Keying Compensation is unfortunately not available in N1MM+ when using the convenient DTR and RTS CW keying over the K3 serial port or the K3S USB cable (CONFIG:PTT-KEY RTS-TR), but it should be added IMHO. This feature is already available in Win-Test. More details and other fixes (e.g. use software generated PTT, no keying compensation) are found in that post above. The K4 has NO CW jitter problems that I've found, but element shortening by TX DLY is still present, and I've filed bug reports about it, but it's not at the top of their list yet. 73, Bob, N6TV K4 Field Tester On Sun, Dec 6, 2020 at 2:01 PM Dave Hachadorian <k6ll.d...@gmail.com> wrote: > Bingo! That's the answer! Many thanks Bill! > > I confirm that keying compensation = 6 produces nice 50% duty cycle dits > with the K3. > > Dave Hachadorian, K6LL > Yuma, AZ > > -----Original Message----- > From: Willard Myers > Sent: Sunday, December 6, 2020 2:34 PM > To: k6ll.d...@gmail.com > Subject: [Elecraft] K3 shortening CW dits > > Dave, > > What you have found applies to all K3 radios when keyed by the KEY IN port. > The key-down duration is too short by about 6 ms, independent of sending > speed. I address it by setting the Keying Compensation in my WinKeyer to 6. > > Bill, K1GQ > > Bill= > > ______________________________________________________________ > 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 n...@arrl.net > ______________________________________________________________ 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
