Re: [Elecraft] [K3] Spontaneous HI CURR, audio reduction in RX mode
The phones jack does not have that restriction. Only the Speaker jack. They have different audio path. Sent from my iPhone ...nr4c. bill > On Feb 5, 2019, at 1:46 PM, Mike K8CN wrote: > > I believe I found a potential answer in the K3 manual (to my embarrassment, I > should have looked there first, eh?) under the Troubleshooting section, > Receive mode: > > "HI CUR or SPKRS=1 warning: HI CUR may indicate a shorted left speaker > channel; the K3 will > reduce AF gain." > > Funny thing is that I don't use the internal speaker, just headphones > connected via the rear panel PHONES jack, and have never plugged anything > into the external speaker jack...I guess I'll unbutton the case and see > if any wiring is awry. The intermittency of the HI CUR warning in receive > mode is puzzling - if there's a shorted audio channel, I would think it > would stay shorted unless my headphones have an intermittent short on one > side. > > Thanks, too, to Joe, 4Z7JBA, for his offline suggestion of another potential > cause for the observed behavior in receive mode. > > Mike, K8CN > > > > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > __ > 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 __ 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
Re: [Elecraft] [K3] Spontaneous HI CURR, audio reduction in RX mode
With thanks to Björn SM7IUN and Mike VP8NO for pointing me to the firmware revision notes, I checked my installed firmware and the K3 Utility and find them to be fully up to date. I'll go quiet on this issue until I've had a chance to reload the firmware and open the case to explore the board connectors. I appreciate the guidance from those with better memories of firmware revision notes! 73, Mike, K8CN -- Sent from: http://elecraft.365791.n2.nabble.com/ __ 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
Re: [Elecraft] Using SunSDR2 pro with KPA500
You might want to try the forums for the SDR radios because their have been discussions on this very topic. Hope this helps. 72/73, EM73vx Robin G-QRP #12386 W4IEN w4...@comcast.net > On Feb 5, 2019, at 18:37, Don Wilhelm wrote: > > Stephen, > > What is needed is a KeyOut from the driving transceiver - that is an output > which is grounded when the driving transceiver goes to transmit. > The KPA500 will frequency sense if it receives a short burst of RF, so the > band data is not necessary, just connect the transverter and amplifier in the > Basic Configuration. > > You will have to consult with the SDR transceiver folks to see if there is a > KeyOut connector (I did not see one when I looked a some of the ads). > Without that, the SunSDR2 cannot key any amplifier. > > 73, > Don W3FPR > >> On 2/5/2019 1:15 PM, Stephen Prior wrote: >> Does anyone have any experience of fully interfacing this SDR with the >> KPA500 please? I confess to be rather confused. I am looking to configure >> the Ext Ctrl tables with the BCD values that the KPA500 requires for band >> switching etc. I understand what BCD is, but in this context I'm confused >> as to how to define it in the SDR's setup. > __ > 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 w4...@comcast.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
Re: [Elecraft] Using SunSDR2 pro with KPA500
Stephen, What is needed is a KeyOut from the driving transceiver - that is an output which is grounded when the driving transceiver goes to transmit. The KPA500 will frequency sense if it receives a short burst of RF, so the band data is not necessary, just connect the transverter and amplifier in the Basic Configuration. You will have to consult with the SDR transceiver folks to see if there is a KeyOut connector (I did not see one when I looked a some of the ads). Without that, the SunSDR2 cannot key any amplifier. 73, Don W3FPR On 2/5/2019 1:15 PM, Stephen Prior wrote: Does anyone have any experience of fully interfacing this SDR with the KPA500 please? I confess to be rather confused. I am looking to configure the Ext Ctrl tables with the BCD values that the KPA500 requires for band switching etc. I understand what BCD is, but in this context I'm confused as to how to define it in the SDR's setup. __ 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
[Elecraft] HI Current
From the firmware release notes: K3 MCU 5.66 / DSP 2.88 / FPF 1.26, 11-28-2018 * ADDED SWR READ COMMAND: "SW;" returns the most recent SWR reading in transmit or TUNE mode, e.g. "SW023;" for an SWR of 2.3:1. Max value returned is "SW99;" (SWR = 99.9:1). K3 MCU 5.64 / DSP 2.88 / FPF 1.26, 2-22-2018 * RCV MODE "HI CUR" THRESHOLD CHANGED: The threshold at which "HI CUR" (excessive current drain) warnings appear in receive mode has been increased. Some users with all options enabled (including the sub receiver, internal transverter, and K-Pod) were seeing spurious HI-CUR warnings and disabling of one speaker channel. Enjoy, Mike VP8NO __ 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
Re: [Elecraft] [K3] Spontaneous HI CURR, audio reduction in RX mode
Mike, do you have the latest firmware? I believe a similar issue was mentioned in a firmware update. I have experienced it myself at SK3W on a station with an outdated firmware. 73, Björn SM7IUN Den tis 5 feb. 2019 kl 19:47 skrev Mike K8CN : > I believe I found a potential answer in the K3 manual (to my > embarrassment, I > should have looked there first, eh?) under the Troubleshooting section, > Receive mode: > > "HI CUR or SPKRS=1 warning: HI CUR may indicate a shorted left speaker > channel; the K3 will > reduce AF gain." > > Funny thing is that I don't use the internal speaker, just headphones > connected via the rear panel PHONES jack, and have never plugged anything > into the external speaker jack...I guess I'll unbutton the case and see > if any wiring is awry. The intermittency of the HI CUR warning in receive > mode is puzzling - if there's a shorted audio channel, I would think it > would stay shorted unless my headphones have an intermittent short on one > side. > > Thanks, too, to Joe, 4Z7JBA, for his offline suggestion of another > potential > cause for the observed behavior in receive mode. > > Mike, K8CN > > > > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > __ > 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 bj...@ekelund.nu > __ 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
[Elecraft] How to get a pgm like MSHV or WSJTx to read the K3 Sub-Rx QRG ?
So I have two programs running to decode FT8. By using Left and right chan of the audio (tnx N5TM), the two iterations of WSJTX can decode the K3 Rx USB Codec 2-Chan-48k audio individually. Now I would like that WSJTX of the Right-Chan on the Sub-Rx to know the frequency. Personally, I am using DxLabSuite's "Commander" to control the K3 ... and when running this way, I see that Commander "VFO-B" sees the correct freq. Anyway, I can't get that QRG out of Commander, but that's alright. I sent a screenshot if they make it to the list. I also tried to guess a way outside of "Commander' to make WSJTX read the Sub Band, but cvan't do that either . Thus, my question to y'all -- 73 Bob KD7YZ AMSAT LM #901 __ 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
Re: [Elecraft] [K3] Spontaneous HI CURR, audio reduction in RX mode
I believe I found a potential answer in the K3 manual (to my embarrassment, I should have looked there first, eh?) under the Troubleshooting section, Receive mode: "HI CUR or SPKRS=1 warning: HI CUR may indicate a shorted left speaker channel; the K3 will reduce AF gain." Funny thing is that I don't use the internal speaker, just headphones connected via the rear panel PHONES jack, and have never plugged anything into the external speaker jack...I guess I'll unbutton the case and see if any wiring is awry. The intermittency of the HI CUR warning in receive mode is puzzling - if there's a shorted audio channel, I would think it would stay shorted unless my headphones have an intermittent short on one side. Thanks, too, to Joe, 4Z7JBA, for his offline suggestion of another potential cause for the observed behavior in receive mode. Mike, K8CN -- Sent from: http://elecraft.365791.n2.nabble.com/ __ 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
[Elecraft] Using SunSDR2 pro with KPA500
Does anyone have any experience of fully interfacing this SDR with the KPA500 please? I confess to be rather confused. I am looking to configure the Ext Ctrl tables with the BCD values that the KPA500 requires for band switching etc. I understand what BCD is, but in this context I'm confused as to how to define it in the SDR's setup. Thanks and 73 Stephen, G4SJP __ 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
Re: [Elecraft] PX3 display
Ok, try holding the menu/labels button at the lower right of the px3 to change the bottom labels selection. It cycles through options, too. You should get an option with no bottom labels and no text box. On Tue, Feb 5, 2019, 10:14 AM Joseph Trombino, Jr Thought I found the correct adjustment by going to MENU item “Height of > waterfall display”. > > I got the full screen I wanted…but after I turned the KX3 on the large > full screen changed to about half size. > > Tried gain several times without success…I can’t seem to replicate the > full screen I want. > > Am thoroughly confused now so any help is really appreciated. > > 73, Joe W2KJ > __ > 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 ard...@gmail.com __ 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
Re: [Elecraft] Tx distortion
Don, I missed that the collector q6 must be the most ineresting pin to look at and when tuning on 80 meters there is a nice 3.8 Mhz sinuswave. 73 Mike sm3xgm -- Sent from: http://elecraft.365791.n2.nabble.com/ __ 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
Re: [Elecraft] Tx distortion
Mike, There is very little change in current for the low level stages between receive and transmit, but the RF amplifier stages Q5 thru Q8 draw more current in transmit. Have you checked your power supply to make sure it is not producing ripple or low voltage during transmit. A low power supply voltage will increase the IMD significantly. Check the power supply connections as well. Monitor the voltage the K2 sees during transmit by using the K2 display function rather than measuring the power supply voltage directly. 73, Don W3FPR On 2/5/2019 6:26 AM, mustang65 wrote: Don, I forgott to mention that I do not have the k60xv option but that hade been a nice way to rule out the powerstage. I wonder can there be any circuit that draws more current in Tx then Rx and causing rippel on the dc voltage during tx but not rx due to a cap that has lost capacitans? Have replaced all el. caps. on the ksb2 board but not any on the other boards. __ 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
Re: [Elecraft] PX3 display
Thought I found the correct adjustment by going to MENU item “Height of waterfall display”. I got the full screen I wanted…but after I turned the KX3 on the large full screen changed to about half size. Tried gain several times without success…I can’t seem to replicate the full screen I want. Am thoroughly confused now so any help is really appreciated. 73, Joe W2KJ __ 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
Re: [Elecraft] PX3 display
Tap the the "Display / Average" button in the upper right corner of the PX3 73, Dale - WA8SRA On Tue, Feb 5, 2019 at 9:45 AM Joseph Trombino, Jr wrote: > Howdy Gang. > > Recently picked up a nice PX3 to use with my KX3 and have been playing > with the menu options but can’t seem to find the one I want. > > I’d like to make the upper frequency portion of the display full screen….I > don’t need the bottom waterfall. > > Is this possible? > > Seems like largest screen I can get is about 1/2 size. > > Am I missing a menu option? > > Appreciate any info/assistance. > > 73, Joe W2KJ > > > __ > 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 dmbor...@gmail.com __ 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
Re: [Elecraft] PX3 display
Did you try the "Disp" button on the top right of the PX3? On Tue, Feb 5, 2019 at 9:45 AM Joseph Trombino, Jr wrote: > Howdy Gang. > > Recently picked up a nice PX3 to use with my KX3 and have been playing > with the menu options but can’t seem to find the one I want. > > I’d like to make the upper frequency portion of the display full screen….I > don’t need the bottom waterfall. > > Is this possible? > > Seems like largest screen I can get is about 1/2 size. > > Am I missing a menu option? > > Appreciate any info/assistance. > > 73, Joe W2KJ > > > __ > 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 ard...@gmail.com -- -+-+-+-+- Jenny Everywhere's Infinite: Quark Time http://quarktime.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
[Elecraft] PX3 display
Howdy Gang. Recently picked up a nice PX3 to use with my KX3 and have been playing with the menu options but can’t seem to find the one I want. I’d like to make the upper frequency portion of the display full screen….I don’t need the bottom waterfall. Is this possible? Seems like largest screen I can get is about 1/2 size. Am I missing a menu option? Appreciate any info/assistance. 73, Joe W2KJ __ 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
[Elecraft] Subrx COR
Exactly how much signal is required to activate the subrx COR? __ 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
Re: [Elecraft] Tx distortion
Don, I forgott to mention that I do not have the k60xv option but that hade been a nice way to rule out the powerstage. I wonder can there be any circuit that draws more current in Tx then Rx and causing rippel on the dc voltage during tx but not rx due to a cap that has lost capacitans? Have replaced all el. caps. on the ksb2 board but not any on the other boards. 73 Mike sm3xgm -- Sent from: http://elecraft.365791.n2.nabble.com/ __ 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
Re: [Elecraft] Tx distortion
Jim, Thanks for the advice. It is also my experiece that electrolytic caps are the main reasen for mailfunction specially in a bit older electronic euqvipment. I have replaced all el.caps in the ksb2 board but not any on the other boards mostly because I beleive they are commen with receiving. On the other hand can there be any circuit that draws more current in Tx then Rx and start rippel on the dc voltage ? 73 Mike sm3xgm -- Sent from: http://elecraft.365791.n2.nabble.com/ __ 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
Re: [Elecraft] Tx distortion
Don, Thanks for all help. I have measured on q5,q6,q7 when it been resting over night and when it is warm and the difference is smal. q5 base cold )7,9 varm 7,9 q6 base 1,04 emitter 0,28 varm base 1,03 emitter 031 caculeted gives Ic 200mA Pdissipation 2,8W q7 cold bas 0,658varm 0,647 All in ssb with no modulation. I looked with he scope on the base of q5,q6,q7 on the3.8 MHz signal in tuning and on q5 I have a nice sinuswave but on q6 it lookslike a sampled digital sinuswave a sinus stairway. On q7 base the positiv side hase roud sinuswave form but the negativ side is like a saw vawe sharp edge. Maybe the scope loads the signal down I do not no the cap. of the probe but guess it is about 16pF. The strange thing is way there is almost no distotion when it been resting over the night but comes in after a couple of minutes transmitting. I put it out in the cold for a while but the distortion was still there even if it was cold so it do not looks like it is the temp more like a old care battery that almost empty but will get back a little power resting a night even if you do not charge it. I have replaced the electrolytic caps on the ksb2 board but can there be bad caps on the controlboard that effects transmitt but maybe receive just a little? I been thinking if there is a problem with the bfo or vco it should effect Rx as mutch as Tx. 73 Mike sm3xgm -- Sent from: http://elecraft.365791.n2.nabble.com/ __ 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
