That was supposed to say *CONFIG:PTT-KEY RTS-DTR*. 73, Bob, N6TV
On Mon, Dec 7, 2020 at 4:05 PM Bob Wilson, N6TV <n...@arrl.net> wrote: > 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
