I will check the temperature while operating next time. I would like an opinion, however, on whether PSK31 is also defined as a "high duty cycle" mode because I can and often do camp out on PSK31 all day (and that means either in a QSO or calling CQ with the repeat function in DM780 set to every 30 seconds) and it doesn't make the KX3 flinch.
By the way, a subjective assessment of the heat sink temp is that in all digital modes the heat sink is warm to the touch, but only warm like "phone in your pocket" warm. It doesn't approach an uncomfortable level at ALL. On Tue, Mar 21, 2017 at 10:29 PM, Nr4c <n...@widomaker.com> wrote: > Turn on the display of Temperature. Watch it while transmitting. > > Sent from my iPhone > ...nr4c. bill > > > > On Mar 21, 2017, at 3:45 PM, rich hurd WC3T <r...@wc3t.us> wrote: > > > > But only on JT modes? And this is a 7XXX serial number KX3. > > > > I do not think this has anything to do with the physical power > connections, > > but I did inspect them and they were all tight. > > Going to pay more attention to see what might be going on during these Tx > > cycles. > > > >> On Tue, Mar 21, 2017 at 3:17 PM, Don Wilhelm <donw...@embarqmail.com> > wrote: > >> > >> Rich, > >> > >> First check your power cables carefully for any sign of looseness. > >> If none found, try wiggling the KX3 2.1mm power plug to see if that > >> induces the failure. You may have a failed power jack. > >> Early KX3s did not have the power jack glued to the board and could fail > >> (even with the right angle power plug). The failure would be > intermittent. > >> > >> I don't think it has anything to do with your operating mode. > >> > >> 73, > >> Don W3FPR > >> > >> > >>> On 3/21/2017 2:47 PM, rich hurd WC3T wrote: > >>> > >>> Okay, here's an odd one and I couldn't find any suggestions in the > >>> archives > >>> or using Google-fu. > >>> > >>> I can run any mode with my KX3/PX3/KXPA100 station with no incident > except > >>> for JT modes; using WSJT-X, I will complete a Tx cycle and randomly the > >>> KX3 > >>> will bounce (power off/power on.) > >>> 9 times out of 10, I'm operating at 3W. I'll sometimes bump to 5. To > >>> test this, I have also bumped it to 11 watts to kick the amp in and I > get > >>> the same reaction; that is, sometimes (but not always) the station just > >>> decides it's had enough and the power bounces. Power supply is a > Samlex > >>> SEC-1223. > >>> > >> > > > > > > -- > > 73 (or 72 for the QRP folks), > > Rich Hurd / WC3T > > Northampton County RACES > > EPA-ARRL Public Information Officer for Scouting > > Latitude: 40.761621 Longitude: -75.288988 Grid: *FN20is* > > 40°45.68' N 75°17.33' W > > ______________________________________________________________ > > 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 nr4c@widomaker.comBut only on JT modes? And this > is a 7XXX serial number KX3. > > > > I do not think this has anything to do with the physical power > connections, > > but I did inspect them and they were all tight. > > Going to pay more attention to see what might be going on during these Tx > > cycles. > > > >> On Tue, Mar 21, 2017 at 3:17 PM, Don Wilhelm <donw...@embarqmail.com> > wrote: > >> > >> Rich, > >> > >> First check your power cables carefully for any sign of looseness. > >> If none found, try wiggling the KX3 2.1mm power plug to see if that > >> induces the failure. You may have a failed power jack. > >> Early KX3s did not have the power jack glued to the board and could fail > >> (even with the right angle power plug). The failure would be > intermittent. > >> > >> I don't think it has anything to do with your operating mode. > >> > >> 73, > >> Don W3FPR > >> > >> > >>> On 3/21/2017 2:47 PM, rich hurd WC3T wrote: > >>> > >>> Okay, here's an odd one and I couldn't find any suggestions in the > >>> archives > >>> or using Google-fu. > >>> > >>> I can run any mode with my KX3/PX3/KXPA100 station with no incident > except > >>> for JT modes; using WSJT-X, I will complete a Tx cycle and randomly the > >>> KX3 > >>> will bounce (power off/power on.) > >>> 9 times out of 10, I'm operating at 3W. I'll sometimes bump to 5. To > >>> test this, I have also bumped it to 11 watts to kick the amp in and I > get > >>> the same reaction; that is, sometimes (but not always) the station just > >>> decides it's had enough and the power bounces. Power supply is a > Samlex > >>> SEC-1223. > >>> > >> > > > > > > -- > > 73 (or 72 for the QRP folks), > > Rich Hurd / WC3T > > Northampton County RACES > > EPA-ARRL Public Information Officer for Scouting > > Latitude: 40.761621 Longitude: -75.288988 Grid: *FN20is* > > 40°45.68' N 75°17.33' W > > ______________________________________________________________ > > 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...@widomaker.com > > -- 73 (or 72 for the QRP folks), Rich Hurd / WC3T Northampton County RACES EPA-ARRL Public Information Officer for Scouting Latitude: 40.761621 Longitude: -75.288988 Grid: *FN20is* 40°45.68' N 75°17.33' W ______________________________________________________________ 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
