[Elecraft] KX3 reboot only on JT modes?

rich hurd WC3T rich at wc3t.us
Fri Mar 24 14:56:34 EDT 2017


I figure I'll wrap this issue up and give it a decent burial.   I
reconfigured WSJT-X and JT-Alert to NOT use the HRD interface, but natively
communicate with the KX3.   I then fired up the rig and began calling CQ
with the power down to 3 watts.

The bands being as "wonderful" as they are, I didn't expect much on 20M
during the middle of the day with the noise floor here at S9 but
PSKreporter had me going into Europe the way I used to within a few
minutes, and I did actually make a QSO after about 10 minutes (that's about
twice as long as it lasted previously before a reboot).    I believe the
problem is fixed.  The KX3 didn't even get above ambient temperature.

Now to figure out how to append this ADIF file into my HRD Logger logfile.
But that's just computer stuff.   Easy peasy.

Thanks for the great suggestions from everyone.  This list rocks.

On Wed, Mar 22, 2017 at 10:57 AM, Brian Waterworth <
brian.waterworth at gmail.com> wrote:

> Technically, psk31 is a high duty cycle mode.   But, you may not transmit
> as long as you would with JT modes.  Depends on how chatty :-) you are.
>
> Regards
> Brian
> VE3IBW
>
> On Mar 22, 2017 2:49 PM, "rich hurd WC3T" <rich at wc3t.us> wrote:
>
> 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 <nr4c at 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 <rich at 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 <donwilh at 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 at 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 at 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 <donwilh at 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 at 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 at 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 at 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 brian.waterworth at gmail.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


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