Still hoping for some resolution to this problem since it’s now been a year since it was reported to and acknowledged by Elecraft as being a firmware bug.
It really renders the KX3 as fairly useless as an I/F rig for microwave transverters if you need the TxInhibit function. Chris Cox, N0UK [email protected] > On Oct 10, 2020, at 09:58, Drew Arnett <[email protected]> wrote: > > I was able to reproduce the bug Chris, N0UK, reported with tx inhibit > and CW sidetone on the KX3. > > To be thorough, the FW as just installed by Elecraft, is uC 02.90 > anddsp 01.52which is the latest. > > I have cabling for the ACC2 port, as I use ring contact to PTT a > transverter and also to PTT a KXPA100. > > Menus have had minimal configuration post service from elecraft, just > enough to setup for transverter operation in the 10 GHz contest. Mode > is CW and VOX is on of course. > > ACC2 Inhibit = Low. I used a paddle on the KXPD paddle port (key 2). > Was able to get the stuck sidetone as you describe while sending dits > or sending dahs by. (Key 2 left = dot.) For kicks, changed to Key 2 > = hand. Found that if the key is released before inhibit is released, > the sidetone does not stick. The value of inhibit when the key is > initially asserted is not buggy. Saw the same behavior with menu > setting inhibit high. > > inhibit low > key - inhibit - inhibit release - key release --> sidetone stuck > key - inhibit - key release - inhibit release --> sidetone OK > inhibit - key - inhibit release - key release --> sidetone stuck > inhibit - key - key release - inhibit release --> sidetone OK > > inhibit high > key - inhibit - inhibit release - key release --> sidetone stuck > key - inhibit - key release - inhibit release --> sidetone OK > inhibit - key - inhibit release - key release --> sidetone stuck > inhibit - key - key release - inhibit release --> sidetone OK > > The behavior is a problem is in the firmware at the inhibit released event. > > A thorough bug report would also include observations of the PTT > output and actual RF output. > > Best regards, > > Drew > n7da > >> 6. Continuing saga with Tx Inhibit and the KX3 - possible >> firmware bug? (Chris Cox, N0UK) >> 16. KX3 Tx Inhibit CW-VOX problem (Chris Cox, N0UK) >> >> >> Message: 6 >> Date: Mon, 14 Sep 2020 16:14:57 -0500 >> From: "Chris Cox, N0UK" <[email protected]> >> To: [email protected] >> Cc: [email protected] >> Subject: [Elecraft] Continuing saga with Tx Inhibit and the KX3 - >> possible firmware bug? >> Message-ID: <[email protected]> >> Content-Type: text/plain; charset=utf-8 >> >> Having solved the need for getting +Ve Tx Inhibit working on my KX3/10GHz >> Transverter integration using a mosfet switch to invert the signal and >> configured the KX3 for 0v Tx Inhibit, I had opportunity to test it out this >> afternoon. >> >> The solution seemed to work fine on SSB but I now have a weird issue when >> using the rig on CW. >> >> If I manually select transmit with the microphone PTT and then wait for the >> transverter sequencing to remove Tx Inhibit and then key CW with the >> paddles, the system works as desired. >> >> If I key the system using VOX, the Tx Inhibit functions correctly, fully >> disabling the transmitter from producing RF until TxInhibit is removed BUT >> the CW sidetone becomes permanently on from the moment TXInh disappears >> regardless of whether I am sending or not. It stays present until I press >> any of the buttons on the KX3. This happens regardless of which band is >> enabled, but occurs whenever TxInhibit is present. >> >> If I remove the TXInh fro the GPIO input (but leave the option enabled in >> the KX3 config) the rig operates normally. >> >> Can anyone else replicate this oddball behavior? It seems to be a firmware >> bug. I have tried removing power but that does not alter the effect. >> >> Again, all works just fine if I don?t try to key the paddles before PTT >> sequencing has changed over. >> >> Chris Cox, N0UK >> [email protected] >> >> >> >> >> >> >> Message: 16 >> Date: Tue, 15 Sep 2020 08:10:31 -0500 >> From: "Chris Cox, N0UK" <[email protected]> >> To: [email protected] >> Subject: [Elecraft] KX3 Tx Inhibit CW-VOX problem >> Message-ID: <[email protected]> >> Content-Type: text/plain; charset=utf-8 >> >> Having solved the need for getting +Ve Tx Inhibit working on my KX3/10GHz >> Transverter integration using a MOSFET switch to invert the logic level >> coming from the 10GHz transverter and configured the KX3 for 0v Tx Inhibit, >> I had the opportunity to test it out yesterday afternoon. >> >> The solution seemed to work fine on SSB but I now have a weird issue when >> using the rig on CW. >> >> If I manually select transmit with the microphone PTT (didn?t try the XMIT >> key) and then wait for the transverter sequencing to remove Tx Inhibit and >> then key CW with the paddles, the system works as desired. >> >> If I key the system using CW VOX, the Tx Inhibit functions correctly, fully >> disabling the transmitter from producing RF until TxInhibit is removed by >> the transverter?s sequencing logic BUT then the CW sidetone becomes >> permanently on from the moment TXInh disappears, regardless of whether I am >> keying or not. It stays present until I press any of the buttons on the >> KX3. This happens regardless of which band is enabled, but occurs whenever >> TxInhibit is initially present. >> >> If I remove the TXInh fro the ACC2 GPIO input (but leave the option enabled >> in the KX3 config) the rig operates normally under VOX control. >> >> Can anyone else replicate this oddball behavior? It seems to be a firmware >> bug. I have tried removing power from the KX3 but that does not correct the >> anomalous behavior. >> >> Again, all works just fine if I don?t try to key the paddles before PTT >> sequencing has changed over. >> >> Chris Cox, N0UK >> Chris Cox, N0UK >> [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]
