Re: [Elecraft] K3EXREF and Trimble Thunderbolts
Don. WSPR is AFSK with a very small shift at a very low rate. My thinking is that if a stepwise frequency correction was made during a transmit or receive period, it would cause a corresponding shift of the VFO which might be enough to throw the decoder of the receiver. I don't know, that's why I was asking. K2ULR has told me off-list that he did not believe corrections are made while the K3 is transmitting. But it might still affect receiving. I think it is important to know because WSPR is one of those modes where frequency accuracy is really helpful and habitual users of the mode will probably be interested in the K3EXREF. Don Wilhelm-4 wrote: Julian, Please explain why you think any vfo tuning steps are related to a frequency shift induced from the audio input to the K3. I believe this is mixing two entirely separate parameters. I have not actually operated WSPR, but it cannot be that difficult (nor that precise in practice). I believe one would use DATA A sub-mode for WSPR work. The VFO places the waterfall within 1 Hz of the desired fequency with the external reference (actually that could be within 50 Hz - same argument). Now the software applying the audio to the K3 has to shift 1.5 Hz (or 170 Hz for that matter), As long as the K3 can tune the desired frequency to be in the passband, the software and audio input to the K3 will take care of the audio shift. The only requirement is that the K3 remain frequency stable once the frequency is selected - the rest is done in the computer application software. 73, Don W3FPR - Julian, G4ILO. K2 #392 K3 #222. * G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3EXREF-and-Trimble-Thunderbolts-tp6242158p6245052.html Sent from the Elecraft mailing list archive at 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
Re: [Elecraft] S meter command
Wayne: As an extension to this feature, a quasi-simultaneous S-meter read of main and sub receivers would be very useful in evaluating antenna gain and diversity reception. Ideally the main and sub signal strength readings would be captured at the same time, but if some short delay is necessary, the concept is still useful. (Sending sequential read commands to the main and sub adds an unknown delay between the two measurements.) The main thing here is close to simultaneous capture; data transmission of the two values can be subject to whatever delay is inherent in the K3's firmware. Jack K8ZOA On 4/5/2011 11:35 PM, Wayne Burdick wrote: We could return an 8-bit number. I'll add this to the list. 73, Wayne N6KR On Apr 5, 2011, at 3:08 PM, Roger D Johnson wrote: I recently asked Greg, W8WWV, if he would update his S meter Lite program to include the K3. He was amenable provided the K3 S meter read command returned 8 bits of data for sufficient resolution. It appears, from reading the programmer's reference manual, that the K3 command only returns 4 bits. Is there a chance of changing the programming to return 8 bits in a future update? 73, Roger __ 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 __ 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 __ 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
Re: [Elecraft] AGC Problem
This has happened to me several times too, but only on 60m. I am suspicious that Ham Radio Deluxe may be involved in this somewhere. The trouble is because it's such a random event it's difficult to be sure. However, it's never happened just sitting on rx, only after a period of ssb transmission. I hardly ever use ssb so it's going to take me a while to track this one down! Running 4.29 firmware, but it's happened over several versions. 73, Stephen G4SJP On 06/04/2011 01:08, W4CCS w4...@w4ccs.com wrote: Recently I have been experiencing a problem with the AGC on my K3 (2090). When I return to receive from transmit, the AGC is turned off and the speaker system is overloaded. This happens on about every 10 to 15 transmissions. It has happened with the K3 sitting on the desk in receive.. This is very annoying and very hard on the ears..!! I'm running firmware versions: MCU: 04.25 DSP12: 2.71 de W4CCS __ 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 __ 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
Re: [Elecraft] [Elecraft K3] Frequency Calibration using Sidetone
If you don't have perfect pitch, you can use a technique I recently described on the Reverse Beacon Network blog, substituting Spectran for a good ear, which I don't have. See http://reversebeacon.blogspot.com/2010/12/frequency-calibration-and-rbn.html for the full story. 73, Pete N4ZR The World Contest Station Database, updated daily at www.conteststations.com The Reverse Beacon Network at http://reversebeacon.net, blog at reversebeacon.blogspot.com, spots at telnet.reversebeacon.net, port 7000 On 4/5/2011 5:08 PM, David Robertson wrote: On usb mode I tune the K3 to the reference standard you are using ( Any AM station such as WWV or any station of a known frequency). I set the readout to the exact known frequency of that station. I note the pitch of the sound I hear from the station (the tone from WWV or CHU works best) . Next I switch to LSB and note the pitch of the sound. If they are identical then the K3 is calibrated. If the pitch changes then you have to configure the master oscillator's frequency so the pitch between USB and LSB match. I relies the above method requires a good ability to note slight changes in pitch. Some of us do not posses that ability and must use a different method. For those that do, this method works. __ 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
Re: [Elecraft] AGC Problem
There is only one manual way to turn off the AGC and that is to do a hold on the AGC button. Youi can dismiss an intermittent connection in the 5 button, because that should randomly switch fast to slow and back, besides turning AGC off. One would also think that an intermittent 5 button would mess up other stuff as well. You can test this yourself by setting AGC to S or F, then tapping XMIT, then doing a hold on AGC OFF. You will find that this will terminate the XMIT state during the hold and will NOT change the AGC to off state. IMHO, that makes the computer and/or programs, which can do it with a command, the prime suspect. == Universal suspect list for all K3 troubles -- trouble shoot in this order for quickest, cheapest path back to full operation and sanity, and public appearance of experthood: 1) RTFM (Adobe Reader search of PDF very useful) 2) Nothing in second place (maybe not in third place either) 3) Computer AND Operator (bad manual/program/OS AND confused operator) 4) Operator 5) Computer 6) RF in shack 7) K3 Regards and good luck... 73, Guy. On Wed, Apr 6, 2011 at 6:20 AM, Stephen Prior s...@sjprior.fsnet.co.uk wrote: This has happened to me several times too, but only on 60m. I am suspicious that Ham Radio Deluxe may be involved in this somewhere. The trouble is because it's such a random event it's difficult to be sure. However, it's never happened just sitting on rx, only after a period of ssb transmission. I hardly ever use ssb so it's going to take me a while to track this one down! Running 4.29 firmware, but it's happened over several versions. 73, Stephen G4SJP On 06/04/2011 01:08, W4CCS w4...@w4ccs.com wrote: Recently I have been experiencing a problem with the AGC on my K3 (2090). When I return to receive from transmit, the AGC is turned off and the speaker system is overloaded. This happens on about every 10 to 15 transmissions. It has happened with the K3 sitting on the desk in receive.. This is very annoying and very hard on the ears..!! I'm running firmware versions: MCU: 04.25 DSP12: 2.71 de W4CCS __ 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 __ 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 __ 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
Re: [Elecraft] (no subject)
Having done some long term measurements on my k3extref using an HP mHz resolution counter i have seen no corrections during transmit. Once the k3 has warmed up (first thing in the morning it would take 10 minutes for the original tcxo to stabilise enough for jt65/wspr/qrss(5Hz fsk)) I see very few corrections being made on receive either. All I need now is the release of the internal 144 xverter and I am good, frequency stability wise thro 76GHz Dave ww2r -- Message: 44 Date: Wed, 6 Apr 2011 00:58:58 -0700 (PDT) From: Julian, G4ILO julian.g4...@gmail.com Subject: Re: [Elecraft] K3EXREF and Trimble Thunderbolts To: elecraft@mailman.qth.net Message-ID: 1302076738014-6245052.p...@n2.nabble.com Content-Type: text/plain; charset=us-ascii Don. WSPR is AFSK with a very small shift at a very low rate. My thinking is that if a stepwise frequency correction was made during a transmit or receive period, it would cause a corresponding shift of the VFO which might be enough to throw the decoder of the receiver. I don't know, that's why I was asking. K2ULR has told me off-list that he did not believe corrections are made while the K3 is transmitting. But it might still affect receiving. I think it is important to know because WSPR is one of those modes where frequency accuracy is really helpful and habitual users of the mode will probably be interested in the K3EXREF. Don Wilhelm-4 wrote: Julian, Please explain why you think any vfo tuning steps are related to a frequency shift induced from the audio input to the K3. I believe this is mixing two entirely separate parameters. I have not actually operated WSPR, but it cannot be that difficult (nor that precise in practice). I believe one would use DATA A sub-mode for WSPR work. The VFO places the waterfall within 1 Hz of the desired fequency with the external reference (actually that could be within 50 Hz - same argument). Now the software applying the audio to the K3 has to shift 1.5 Hz (or 170 Hz for that matter), As long as the K3 can tune the desired frequency to be in the passband, the software and audio input to the K3 will take care of the audio shift. The only requirement is that the K3 remain frequency stable once the frequency is selected - the rest is done in the computer application software. 73, Don W3FPR - Julian, G4ILO. K2 #392 K3 #222. * G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3EXREF-and-Trimble-Thunderbolts-tp6242 158p6245052.html Sent from the Elecraft mailing list archive at Nabble.com. -- ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net http://mailman.qth.net/mailman/listinfo/elecraft You must be a subscriber to post. Elecraft web page: http://www.elecraft.com End of Elecraft Digest, Vol 84, Issue 8 *** __ 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
Re: [Elecraft] S meter command
That would be good. Even though I have a P3, I am having to keep my sdriq connected to the k3 for its continuum mode where it produces a file of power measured in the bandwidth v time which I use for beacon monitoring Dave ww2r Message: 42 Date: Tue, 5 Apr 2011 20:35:26 -0700 From: Wayne Burdick n...@elecraft.com Subject: Re: [Elecraft] S meter command To: Roger D Johnson n...@roadrunner.com Cc: elecraft@mailman.qth.net Message-ID: 15ab-a582-4499-9d1f-5afb7561b...@elecraft.com Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes We could return an 8-bit number. I'll add this to the list. 73, Wayne N6KR __ 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
Re: [Elecraft] K3EXREF and Trimble Thunderbolts
Julian, The REF CAL adjustment is in 1-Hz steps same as the fine tuning resolution of the VFO. The EXREF will call for a shift to bring the radio frequency back to zero error by introducing a shift command. Typically, the TCXO does not drift much over a short time (TCXO-3 is rated to 0.5 ppm). The error depends on operating frequency and is max at 50-MHz (0.5 ppm = 25 Hz). But it is not like the TCXO is jumping that far. I watched it during the 30-min warm-up of the K3 and it typically moves 1-Hz at a time until it settles out. So I would not expect corrections over 1 or 2 Hz at maximum and they are happening on a 4-second interval. The TCXO is running continuously and not being stepped. The steps are commands to the digital dividers in the synthesizer of the radio. For example the synth. steps when you rotate the VFO. The advantage of the reference oscillator is that it makes the K3 more accurate in frequency. Frequency stability and LO phase noise are still controlled by the TCXO and not the reference. To have the radio stability and phase noise determined by the external source it would require phase locking the TCXO to the reference signal. I do not know enough about synthesizers or PLL so I am guessing there is a momentary phase shift every time the K3EXREF commands a REF CAL change. For robust FEC codes like WSPR it will not be a problem. The sw expects to have jumps and bumps to the data stream and removes them as noise. The experts out there can correct my interpretation where it is in error. I 73, Ed - KL7UW -- Message: 28 Date: Tue, 5 Apr 2011 14:53:00 -0700 (PDT) From: Julian, G4ILO julian.g4...@gmail.com Subject: Re: [Elecraft] K3EXREF and Trimble Thunderbolts To: elecraft@mailman.qth.net Message-ID: 1302040380604-6243940.p...@n2.nabble.com Content-Type: text/plain; charset=us-ascii Thanks to Leigh for his detailed explanation. Also to you, Rich, for explaining how the frequency standard is applied to the K3. I still have a couple of questions. If, as I believe is the case, the K3 REF CAL has fairly large discrete steps, is there any benefit in using a reference oscillator that is many times more accurate than that? All one is looking for is something that will keep the K3 as accurate as it can be without the need to perform regular manual checks. A standard that has extra precision is not going to make the K3 any more accurate because the reference oscillator is being controlled using discrete steps. Has anyone tested the effect of these small stepwise adjustments of frequency on the WSPR mode, in which the data is transmitted using a frequency shift of about 1.5Hz? Julian, G4ILO 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 144-1.4kw, 432-100w, 1296-testing*, 3400-winter? DUBUS Magazine USA Rep dubus...@hotmail.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
[Elecraft] S meter command
Using the K3 utility I typed in the S meter command, SM$, but the program doesn't return a reading. It just echos the command. Obviously, I'm doing something wrong! 73, Roger __ 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
[Elecraft] K2: KSB2 Questions
I am almost exclusively a CW guy but I did purchase the KSB2 option with my K2 for some soundcard digital modes. I finished the board almost a year ago but have never gotten around to installing it yet. (It's very hard to pull me away from CW!) Well I'm now thinking about installing it and I have a few questions... 1. I know that there is a rework eliminator that lets you easily change microphone configurations but that seems like overkill to me since I will probably never actually operate SSB after the initial testing. So a simple connector for the 16-pins of P1, wired up with the appropriate jumper connections, makes sense. But I don't know what kind of connector I need for this. A look at the Mouser catalog was overwhelming with the huge number of different connectors available! What kind of connector do I need to get? Is there any chance that I can find it locally at a Radio Shack or computer store instead of ordering it? BTW, an editorial comment - I'm surprised that Elecraft doesn't provide this connector with the KSB2! 2. This may be a silly question, but I would rather ask a silly question than make a silly mistake! Do the filter adjustments that I need to make for the KSB2 have any impact on the ones that I have already made for my CW work? I worked very hard to optimize those settings and I would really hate to mess them up! 3. Another possibly silly question. The ICOM microphone that I will be using requires a 10K bias resistor between the 5 volt and AF pins. Will this bias resistor have any impact on the connections that I will eventually need to make between my computer and the microphone jack for digital mode work? Thanks in advance for any information that you can share! 73, Paul - N8XMS __ 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
Re: [Elecraft] [Elecraft K3] Frequency Calibration using Sidetone
Or you can try this that I wrote exactly two years ago. http://elecraft.365791.n2.nabble.com/Ref-Osc-Cal-Method-4-tc2595451.html Wes N7WS --- On Wed, 4/6/11, Pete Smith n...@contesting.com wrote: From: Pete Smith n...@contesting.com Subject: Re: [Elecraft] [Elecraft K3] Frequency Calibration using Sidetone To: elecraft@mailman.qth.net Date: Wednesday, April 6, 2011, 4:47 AM If you don't have perfect pitch, you can use a technique I recently described on the Reverse Beacon Network blog, substituting Spectran for a good ear, which I don't have. See http://reversebeacon.blogspot.com/2010/12/frequency-calibration-and-rbn.html for the full story. 73, Pete N4ZR The World Contest Station Database, updated daily at www.conteststations.com The Reverse Beacon Network at http://reversebeacon.net, blog at reversebeacon.blogspot.com, spots at telnet.reversebeacon.net, port 7000 On 4/5/2011 5:08 PM, David Robertson wrote: On usb mode I tune the K3 to the reference standard you are using ( Any AM station such as WWV or any station of a known frequency). I set the readout to the exact known frequency of that station. I note the pitch of the sound I hear from the station (the tone from WWV or CHU works best) . Next I switch to LSB and note the pitch of the sound. If they are identical then the K3 is calibrated. If the pitch changes then you have to configure the master oscillator's frequency so the pitch between USB and LSB match. I relies the above method requires a good ability to note slight changes in pitch. Some of us do not posses that ability and must use a different method. For those that do, this method works. __ __ 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
[Elecraft] N2CQ QRP Contest Calendar: Apr 9 - May 9, 2011
~ N2CQ QRP CONTEST CALENDAR April 9 to May 9, 2011 ~ Montana QSO Party (ALL) ... QRP Category Apr 9, z to Apr 11, z Rules: http://www.fvarc.org/?q=libmain/39 ~ PSK Flavors Contest ... QRP Category Apr 9, 12:00 to 18:00 YOUR LOCAL TIME Rules: http://www.podxs070.com/31-flavors ~ New Mexico QSO Party (CW/PH/Dig) ... QRP Category Apr 9, 1400z to Apr 10, 0200z Rules: http://pages.swcp.com/~n5zgt/nmqsoparty/index.html ~ Georgia QSO Party (CW/SSB) ... QRP Category Apr 9, 1800z to Apr 10, 0359z Apr 10, 1400z to Apr 10, 2359z Rules: http://gqp.contesting.com/Rules.htm ~ SKCC Weekend Sprintathon (Straight Key CW) ... QRP Category Apr 10, z to 2359z Rules: http://www.skccgroup.com/sprint/wes/ ~ UBA Spring Sprint (80m SSB) ... QRP Entries Noted Apr 10, 0600z to 1000z Rules: http://www.uba.be/en/hf/contest-rules ~ Hungarian Straight Key Contest (CW) ... QRP Category Apr 10, 1500z to 1700z Rules: http://hskc.ha8kux.com/data/2010/Hungarian%20Straight%20Key%20Contest%202010.pdf ~ UBA Foxhunt (CW/PSK31/SSB) *** QRP Contest *** Apr 11, 1930z to 2030z Rules: http://www.on5ex.be/foxhunt/foxhunt.html ~ NAQCC Straight Key/Bug Sprint (CW) *** QRP Contest *** EST: Apr 12, 8:30 PM to 10:30 PM UTC: Apr 13, 0030Z to 0230Z Rules: http://naqcc.info/contests.html ~ NAQCC-EU Monthly Sprint (CW) *** QRP Contest *** Apr 13 1800z to 2000z Rules: http://naqcc-eu.org/sprints CWops Mini-CWT Test (CW) ... QRP Category Apr 13, 1100z to 1200z and Apr 13, 1900z to 2000z and Apr 14, 0300z to 0400z Rules: http://www.cwops.org/onair.html ~ The HOLYLAND DX CONTEST (CW/SSB/Dig) ... QRP Category Apr 15, 2100z to Apr 16, 2100z Rules: http://www.iarc.org/?page_id=983 ~ TARA Skirmish Digital Prefix Contest ... QRP Category Apr 16, z to 2359z Rules: http://www.n2ty.org/seasons/tara_seasons.html ~ CQ Manchester Mineira DX Contest (CW) ... QRP Category Apr 16, 1200z to Apr 17, 2359z Rules: http://www.powerline.com.br/cwjf/Regulamento_Ing.pdf ~ Michigan QSO Party (CW/SSB) ...QRP Category Apr 16, 1600z to Apr 17, 0400z Rules: http://www.miqp.org/ ~ Feld Hell Club Sprint (Feld Hell) ... QRP Category Apr 16, 1600z to 1800z Rules: http://sites.google.com/site/feldhellclub/Home ~ EA-QRP Contest (CW) ... QRP Contest! Apr 16, 1700z to 2000z (10, 15 20 Mtrs) Apr 16, 2000z to 2300z (80 Mtrs) Apr 17, 0700z to 1100z (40 Mtrs) Apr 17, 1100z to 1300z (10, 15 20 Mtrs) Rules: http://www.eaqrp.com/concurso/test_eaqrp_cw-en.htm ~ Ontario QSO Party (CW/SSB) ... QRP Category Apr 16, 1800z to Apr 17, 0500z Apr 17, 1200z to Apr 17, 1800z Rules: http://www.va3cco.com/ ~ Rookie Roundup (SSB) 100W Max Apr 17, 1800z to 2359z Rules: http://www.arrl.org/rookie-roundup ~ RUN FOR THE BACON (CW) *** QRP CONTEST *** EDT: Apr 17, 9 PM to 11 PM UTC: Apr 18, 0100z 0300z Rules: http://www.fpqrp.com/ ~ UBA Foxhunt (CW/PSK31/SSB) *** QRP Contest *** Apr 18, 1930z to 2030z Rules: http://www.on5ex.be/foxhunt/foxhunt.html ~ Ten-Ten Spring QSO Party (Digital) ... QRP Category Apr 23, z to Apr 24, 2359z Rules: http://www.ten-ten.org/Forms/QSOPartyRules_082710.pdf ~ SP DX RTTY Contest Apr 23, 1200z to Apr 24, 1200z Rules: http://www.pkrvg.org/zbior.html ~ South Dakota QSO Party (CW/PH/Dig) ... QRP Category Apr 23, 1700z to Apr 24, 1700z Rules: http://www.w0blk.org/2011%20sdqp%20rules.pdf ~ FISTS/EUCW CW QRS Contest (CW) ... QRP Category Apr 25, 0001z to Apr 29, 2359z Rules: http://www.agcw.org/eucw/euqrs.html
Re: [Elecraft] [Elecraft K3] Frequency Calibration using Sidetone
My procedure is only a slight modification of Method 2 in the manual. The AGC will keep the audio level nearly constant under all but the worst conditions. 1. Select fine VFO resolution (1 Hz). 2. Select CW mode, fast AGC, and set bandwidth to 500 Hz. (You don't have to have a CW xtal filter.) 3. If using WWV, do the calibration only when the carrier is unmodulated. If you try it when there are audio tones, you may end up tuning to one of the sidebands. 4. Using CWT, tune to the calibration signal. This will get you very close to zero beat. 5. Locate CONFIG:REF CAL. 6. Tap SPOT to enable the sidetone, and adjust its level to be about the same as that of the signal. You should hear the beat, a fluctuation in volume. If necessary, adjust the sidetone level for the strongest beat. (If you can't hear it when adjusting the sidetone level, shift the VFO a few Hz.) Tune the VFO for the slowest possible fluctuation, probably less than 1 per second. If you have trouble hearing the fluctuations, try feeding the audio to an analog voltmeter or oscilloscope. 7. Note the VFO display frequency. If it isn't within about 100 Hz of the calibration signal, adjust the REF CAL frequency in small increments, always retuning the VFO for zero beat as above, until the VFO display reads with 100 Hz of the calibration frequency. Once you get within about 100 Hz, set the VFO for exactly the calibration frequency, and adjust REF CAL for zero beat as above. (You may be close enough initially.) 8. Using the K3 utility, save the configuration. (Or record the REF CAL value.) 9. Cancel SPOT and exit the menu. 73, Scott K9MA Scott Ellington Madison, Wisconsin USA __ 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
[Elecraft] For Sale K3/100-F P3-F Optional Amp
K3 serial number 4688 P3 serial number 537 Both units received 2nd week of Sept. 2010 with last contact made 17 Nov. 2010 You won't find a K3 and P3 with fewer hours unless you go to Elecraft. K3 ordered as follows K3/100-F Factory assembled K3 with 100W KAT3-F ATU KXV3A If out/xverter interface KTCX03-1TCXO KDVR3 DVR KBPF3 General coverage Receive KFL-3A-6K 6 khz AM Filter KFL3A-2.8-2.7 2.8 khz 8 pole filter KFL3A-400 400 hz 8 pole filter KFL3A-250 250 hz 8 pole filter...Yes, I'm a CW op. hi. P3 factory assembled Both the K3 and P3 come with manuals, all cables and factory shipping boxes I'll also include a Yamaha CM-500 headset and a Heil HS-2 hand switch Asking $3000.00 USPS money order or cash. I would prefer local pick up. (Cleveland Oh) Will ship UPS with you paying only the exact UPS charges. I'll send you the weights, box sizes, shipping from 44136 I'll take them to the local UPS hub, and email you the tracking numbers as soon as I return...Insurance is your choice. All info can be obtained at UPS.COM I also have an Ameritron AL-811H amp. Purchased from Amateur Electronic Supply on 21 Oct. 2010. The 12-10 meter option was activated by AES. $550.00 with K3-P3 or $600.00 sold separately. Same arrangement as the K3-P3 This was my dream retirement station, but poor health forces this sale. I'm good in the Callbook and also in the Cleveland phone book. Please call me at 440-520-3996 between noon and 6pm Eastern. 73 de Dana W8DH __ 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
Re: [Elecraft] [Elecraft K3] Frequency Calibration using Sidetone
All frequencies in the K3, including the sidetone, are derived from the master oscillator. The way this is done guarantees that when the received signal audio frequency matches the sidetone, the receiver is tuned to exactly the frequency of the received signal. This is just a matter of arithmetic, performed precisely by the DSP and phase-lock loops. As far as I know, every receiver with a tracking sidetone uses this method, and can be calibrated the same way. Some receivers, however, like the IC-765, use a separate audio oscillator for the sidetone, in which case some other method must be used. 73, Scott K9MA On Apr 5, 2011, at 4:08 PM, David Robertson wrote: What is the reference for the sidetone frequency within the K3? Is in the K3's master oscillator? If you are in fact changing the master oscillator frequency to match K3's readout to an actual frequency, and if the sidetone frequency is derived from the same master oscillator aren't you defeating the purpose of your calibration. It seems logical to me to a method of calibration that your reference is not derived from the same oscillator you are trying to calibrate. Scott Ellington Madison, Wisconsin USA __ 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
[Elecraft] Grounds... I know, I know... its a Dead issue BUT... (no Pun)
I really hate to bring it up again... But hear me out: My A/C service entrance does not have a ground rod. My house was built about 25 years ago.' I pulled the service front panel and found the following: All the grounds and neutrals are bonded to the metal chassis as they are supposed to be. But there is no wire for a connection to a ground ROD! It looks like they used a solid metal pipe that houses the big A/C wire inside of this pipe. This pipe IS connected to the service entrance by some metal gland nuts. The 2 1/2 pipe goes outside of the house and is buried underground. It goes off to a transformer that is about 100 yards away. So my question: IS this pipe MY Ground rod? Don't follow My Tweets http://twitter.com/PhilTownsend __ 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
Re: [Elecraft] Grounds... I know, I know... its a Dead issue BUT... (no Pun)
Looks like a code violation. Turn yourself in! Steve N4LQ - Original Message - From: Phil Townsend phi...@mac.com To: Elecraft Reflector elecraft@mailman.qth.net Sent: Wednesday, April 06, 2011 11:44 AM Subject: [Elecraft] Grounds... I know,I know... its a Dead issue BUT... (no Pun) I really hate to bring it up again... But hear me out: My A/C service entrance does not have a ground rod. My house was built about 25 years ago.' I pulled the service front panel and found the following: All the grounds and neutrals are bonded to the metal chassis as they are supposed to be. But there is no wire for a connection to a ground ROD! It looks like they used a solid metal pipe that houses the big A/C wire inside of this pipe. This pipe IS connected to the service entrance by some metal gland nuts. The 2 1/2 pipe goes outside of the house and is buried underground. It goes off to a transformer that is about 100 yards away. So my question: IS this pipe MY Ground rod? Don't follow My Tweets http://twitter.com/PhilTownsend __ 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 __ 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
Re: [Elecraft] Batteries
I suspect that no matter what type of batteries that you have, they would die as soon as you press the transmit button. Pen cell batteries are not designed for the current required to transmit. As for your cells, they are probably either NiCad or NiMH cells. They can be charged with the same smart charger. Trickle charging them is not a good idea. You need the charger to turn off when the cells are fully charged. You certainly can connect the cells in series to get a higher voltage. Connecting this type cells in parallel without diodes to protect one set from discharging into the other is not generally recommended. I put batteries radio control into garden railroad trains and I never connect 2 battery packs in parallel without diodes. If you really want to run your radio from batteries, either get some gell-cells batteries or a set of good, high current NiCad, NiMH or litium batteries. I have bought NiMH D cells with a rating of 10A/H. They will deliver over 30 amps. Your pen cells are probably 2A/H and will only do that at low currents since their internal resistance is relatively high. __ 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
Re: [Elecraft] Grounds... I know, I know... its a Dead issue BUT... (no Pun)
According to the NEC a buried pipe with corrosion protection over 8ft long is an acceptable grounding electrode, with a listed hierarchy of preference for different types of pipes. Metallic water pipes are 1st on the list. Normally other pipes are used only when the water pipe is non-metallic. _ Clyde Washburn, K2UE 82 Lasalle Pkwy Victor, NY 14564-9610 585-317-7006 k...@rochester.rr.com -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Phil Townsend Sent: Wednesday, April 06, 2011 11:44 AM To: Elecraft Reflector Subject: [Elecraft] Grounds... I know, I know... its a Dead issue BUT... (no Pun) I really hate to bring it up again... But hear me out: My A/C service entrance does not have a ground rod. My house was built about 25 years ago.' I pulled the service front panel and found the following: All the grounds and neutrals are bonded to the metal chassis as they are supposed to be. But there is no wire for a connection to a ground ROD! It looks like they used a solid metal pipe that houses the big A/C wire inside of this pipe. This pipe IS connected to the service entrance by some metal gland nuts. The 2 1/2 pipe goes outside of the house and is buried underground. It goes off to a transformer that is about 100 yards away. So my question: IS this pipe MY Ground rod? Don't follow My Tweets http://twitter.com/PhilTownsend __ 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 __ 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
[Elecraft] KPA500
Assembled unit on order. YEH! Philip LaMarche LaMarche Enterprises, Inc mailto:p...@lamarcheenterprises.com p...@lamarcheenterprises.com http://www.LaMarcheEnterprises.com www.LaMarcheEnterprises.com 727-944-3226 727-937-8834 Fax 727-510-5038 Cell http://www.w9dvm.com www.w9dvm.com K3 #1605 CCA 98-00827 CRA 1701 W9DVM __ 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
Re: [Elecraft] For Sale K3/100-F P3-F Optional Amp
Sale pending on K3 P3Amp still available. __ 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
[Elecraft] KPA-500 K Ordered!
Can't wait __ 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
Re: [Elecraft] KPA-500 K Ordered!
Isn't it an exciting day! Philip LaMarche LaMarche Enterprises, Inc p...@lamarcheenterprises.com www.LaMarcheEnterprises.com 727-944-3226 727-937-8834 Fax 727-510-5038 Cell www.w9dvm.com K3 #1605 CCA 98-00827 CRA 1701 W9DVM -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mike Fatchett Sent: Wednesday, April 06, 2011 12:28 PM To: elecraft@mailman.qth.net Subject: [Elecraft] KPA-500 K Ordered! Can't wait __ 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 __ 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
[Elecraft] KPA-500 questions
The manual describes an optional cable availabe from Elecraft but it is not in the price list. I have a K3 and P3. Is the cable part of the kit or the assembled amp? Can we purchase the European AC cord as it might be handy for those who travel abroad. Mike W0MU __ 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
Re: [Elecraft] Grounds... I know, I know... its a Dead issue BUT... (no Pun)
On 4/6/2011 8:44 AM, Phil Townsend wrote: It looks like they used a solid metal pipe that houses the big A/C wire inside of this pipe. This pipe IS connected to the service entrance by some metal gland nuts. The 2 1/2 pipe goes outside of the house and is buried underground. It goes off to a transformer that is about 100 yards away. So my question: IS this pipe MY Ground rod? Usually, metallic conduit (the pipe you describe) rated for direct burial is protected by an outer layer to resist corrosion. That layer is likely to act as an insulator, so it's unlikely that your conduit is providing an acceptable ground. If it were my home I would add one or more ground rods by the power panel, and more near the shack. And, of course, all must be bonded together. Indeed, that's what I had to do with the home I bought in CA. There were NO rods, and the only attempt at an earth connection was a wire running horizontally about three feet above ground to a metallic outlet for a watering hose, but all pipe to the hose was PVC. So the house was ungrounded! 73, Jim K9YC __ 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
Re: [Elecraft] KPA-500 K Ordered!
Kits won't ship until May 15, factory assembled units start shipping April 15. Grumble, grumble, grumble. Rob NV5E Date: Wed, 6 Apr 2011 10:27:50 -0600 From: w...@w0mu.com To: elecraft@mailman.qth.net Subject: [Elecraft] KPA-500 K Ordered! Can't wait __ 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 __ 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
Re: [Elecraft] KPA-500 questions
In a recent message, Mike Fatchett w...@w0mu.com writes Can we purchase the European AC cord as it might be handy for those who travel abroad. Bear in mind, Mike, if you travel to the UK you will need yet a different cord. In Great Britain with have a different power plug to mainland Europe. Perhaps UK purchasers of the KPA-500 will get a discount. ;-) -- + - - - - - - - - - - - - - - - - + | David M Pratt, Kippax, Leeds. | | Website: http://www.g4dmp.co.uk | + - - - - - - - - - - - - - - - - + __ 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
Re: [Elecraft] KPA-500 questions
Answers below 73, Eric --- On 4/6/2011 9:49 AM, Mike Fatchett wrote: The manual describes an optional cable availabe from Elecraft but it is not in the price list. I have a K3 and P3. Is the cable part of the kit or the assembled amp? -- It is an optional cable since it is only applicable to the K3. I'll get it up on the order form ASAP. (We're running hard this morning! :-) Also note that the KPA500 will auto band-switch with just RF and PTT , following the K3 and most other rigs in about 10-15 ms of 1st TX. The AUX cable provides amplifier band switching prior to TX, and also allows the dedicated band buttons on the KPA500 to control K3. It also feeds back KPA500 status to the K3, which allows the K3 to change between two user set power levels when the amp is in-line or in standby. (Say 30-45W to drive the amp, and 100W when the amp is bypassed.) Can we purchase the European AC cord as it might be handy for those who travel abroad. Yes, I'll add this to the order form at the same time. (in the next 15 minutes.) Mike W0MU __ __ 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
Re: [Elecraft] Grounds... I know, I know... its a Dead issue BUT... (no Pun)
On Wed, 6 Apr 2011 12:07:03 -0400 Clyde Washburn k...@rochester.rr.com wrote: According to the NEC a buried pipe with corrosion protection over 8ft long is an acceptable grounding electrode, with a listed hierarchy of preference for different types of pipes. Metallic water pipes are 1st on the list. Normally other pipes are used only when the water pipe is non-metallic. That's what I've got here. The panel is grounded to the cold water supply which runs 15' to the basement wall and then 6' deep all the way out to the street (70'). The water meter is metal (bronze) and there is no plastic anywhere in the system. My shack ground is an 5/8 x 8' copper clad rod connected to 2 copper ribbon which runs from the other end of the house, enters the basement where the electrical service does (boy I love buried service) and is clamped under the same wire clamp used for the electrical panel. The only ground rod in the system is the one next to my shack window. 70' of metal water pipe is a pretty good ground. -- R. Kevin Stover AC0H __ 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
Re: [Elecraft] KPA-500 K Ordered!
That's for two reasons: 1. The kit assembly manual is still in process. 2. We are shipping built units first to make sure we catch any early issues -before- they leave the factory. The assembled KPA500s go through a detailed final test and burn in before shipping. 73, Eric On 4/6/2011 9:57 AM, Rob May wrote: Kits won't ship until May 15, factory assembled units start shipping April 15. Grumble, grumble, grumble. Rob NV5E Date: Wed, 6 Apr 2011 10:27:50 -0600 From: w...@w0mu.com To: elecraft@mailman.qth.net Subject: [Elecraft] KPA-500 K Ordered! Can't wait __ 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 __ 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 __ 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
[Elecraft] Just ordered the KPA500
It's out! The rush is own. 73, Fred Do or Do-not. There is no 'Try'... ~ Yoda __ 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
Re: [Elecraft] KPA-500 questions
It also feeds back KPA500 status to the K3, which allows the K3 to change between two user set power levels when the amp is in-line or in standby. (Say 30-45W to drive the amp, and 100W when the amp is bypassed.) Is this done by a contact closure (e.g., DIGIN), AuxBus or CAT? Access to the interface/API would be of value for use with other amplifiers or perhaps tuner. I can think of a couple places to use the information. 73, ... Joe, W4TV On 4/6/2011 1:08 PM, Eric Swartz - WA6HHQ, Elecraft wrote: Answers below 73, Eric --- On 4/6/2011 9:49 AM, Mike Fatchett wrote: The manual describes an optional cable availabe from Elecraft but it is not in the price list. I have a K3 and P3. Is the cable part of the kit or the assembled amp? -- It is an optional cable since it is only applicable to the K3. I'll get it up on the order form ASAP. (We're running hard this morning! :-) Also note that the KPA500 will auto band-switch with just RF and PTT , following the K3 and most other rigs in about 10-15 ms of 1st TX. The AUX cable provides amplifier band switching prior to TX, and also allows the dedicated band buttons on the KPA500 to control K3. It also feeds back KPA500 status to the K3, which allows the K3 to change between two user set power levels when the amp is in-line or in standby. (Say 30-45W to drive the amp, and 100W when the amp is bypassed.) Can we purchase the European AC cord as it might be handy for those who travel abroad. Yes, I'll add this to the order form at the same time. (in the next 15 minutes.) Mike W0MU __ __ 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 __ 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
Re: [Elecraft] K3EXREF and Trimble Thunderbolts
Edward R. Cole wrote: The REF CAL adjustment is in 1-Hz steps same as the fine tuning resolution of the VFO. My experience with REF CAL shows that turning the knob 1 unit does not result in a 1Hz shift in the RX frequency. Leigh/WA5ZNU -- View this message in context: http://elecraft.365791.n2.nabble.com/K3EXREF-and-Trimble-Thunderbolts-tp6242158p6246911.html Sent from the Elecraft mailing list archive at 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
[Elecraft] SDR IQ/IF Questions
Hello fellow SDR enthusiasts, I have looked around a little bit and haven't found a very definitive answer for the questions that I'm having about the way the K3 and external SDR equipment works. I've been looking into the LP-Pan which converts the IF output from the K3 into (im guessing) audio signals which then are converted into digital data by a soundcard. The trouble I'm having is understanding what exactly I/Q is. From what I understand, I/Q is digital data that software like CW Skimmer understands. Now, I've also been looking at the SDR-IQ which does all of this internally by taking the IF output from the K3 and converts it directly into digital data which is then ferried to the computer over USB, forgoing the need for an extra soundcard. Now, I've seen two versions of PowerSDR. I've seen PowerSDR/IF (looks more developed/supported), and PowerSDR-IQ. What is the difference? I suppose the summary question of this email is. can you use PowerSDR/IF with an SDR-IQ rather than an LP-Pan? I personally would rather buy an SDR-IQ and take that extra hardware stage (possible audio loss) out of the picture. Thanks! Geoffrey Wolf AB3LS - Amateur Radio Callsign University of Pittsburgh '14 gr...@pitt.edu liltechd...@me.com (412) 450-1310 __ 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
Re: [Elecraft] KPA-500 questions
It should be no problem to get the cord you need. From the photo it appears that the end of the power cable is a standard IEC C13 female plug connector as used on so many computers and other electronic devices. A quick search on Google or your favorite supplier should let you find the cord you need. Or the adaptor you need. The comment on UK is significant. I know that a lot of UK power cords have a fuse in the plug. http://en.wikipedia.org/wiki/BS_1363 I would expect that it would be prudent to verify that the fuse is the correct size for the device and that you have spares. I think they do some of their premises wiring quite different from US practise. Specifically the ring circuit http://en.wikipedia.org/wiki/Ring_circuit which can deliver a very high current. Perhaps our friends over the pond can provide accurate and definitive information David K0LUM. At 5:57 PM +0100 4/6/11, David Pratt wrote: In a recent message, Mike Fatchett w...@w0mu.com writes Can we purchase the European AC cord as it might be handy for those who travel abroad. Bear in mind, Mike, if you travel to the UK you will need yet a different cord. In Great Britain with have a different power plug to mainland Europe. Perhaps UK purchasers of the KPA-500 will get a discount. ;-) -- + - - - - - - - - - - - - - - - - + | David M Pratt, Kippax, Leeds. | | Website: http://www.g4dmp.co.uk | + - - - - - - - - - - - - - - - - + __ 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
Re: [Elecraft] KPA-500 questions
Is part of a proprietary signaling protocol on the auxbus line in the cable. 73, Eric On 4/6/2011 10:20 AM, Joe Subich, W4TV wrote: It also feeds back KPA500 status to the K3, which allows the K3 to change between two user set power levels when the amp is in-line or in standby. (Say 30-45W to drive the amp, and 100W when the amp is bypassed.) Is this done by a contact closure (e.g., DIGIN), AuxBus or CAT? Access to the interface/API would be of value for use with other amplifiers or perhaps tuner. I can think of a couple places to use the information. 73, ... Joe, W4TV On 4/6/2011 1:08 PM, Eric Swartz - WA6HHQ, Elecraft wrote: Answers below 73, Eric --- On 4/6/2011 9:49 AM, Mike Fatchett wrote: The manual describes an optional cable availabe from Elecraft but it is not in the price list. I have a K3 and P3. Is the cable part of the kit or the assembled amp? -- It is an optional cable since it is only applicable to the K3. I'll get it up on the order form ASAP. (We're running hard this morning! :-) Also note that the KPA500 will auto band-switch with just RF and PTT , following the K3 and most other rigs in about 10-15 ms of 1st TX. The AUX cable provides amplifier band switching prior to TX, and also allows the dedicated band buttons on the KPA500 to control K3. It also feeds back KPA500 status to the K3, which allows the K3 to change between two user set power levels when the amp is in-line or in standby. (Say 30-45W to drive the amp, and 100W when the amp is bypassed.) Can we purchase the European AC cord as it might be handy for those who travel abroad. Yes, I'll add this to the order form at the same time. (in the next 15 minutes.) Mike W0MU __ __ 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 __ 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 __ 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
Re: [Elecraft] KPA-500 questions
This is correct. We use a standard IEC connector in our rear power module, which also provides RF filtering etc. We also supply fuses with the power cords. 3AG 12A fuse for 100-125V use. Our 110V cord uses 14 ga wire. 3AG 6A for 200-250V with the PWR-EU2P cable. That cord can use 16 or 18 ga wire, since the current is less. If you buy your cord there make sure to get the correct fuses too. 73, Eric On 4/6/2011 10:30 AM, David Christ wrote: It should be no problem to get the cord you need. From the photo it appears that the end of the power cable is a standard IEC C13 female plug connector as used on so many computers and other electronic devices. A quick search on Google or your favorite supplier should let you find the cord you need. Or the adaptor you need. The comment on UK is significant. I know that a lot of UK power cords have a fuse in the plug. http://en.wikipedia.org/wiki/BS_1363 I would expect that it would be prudent to verify that the fuse is the correct size for the device and that you have spares. I think they do some of their premises wiring quite different from US practise. Specifically the ring circuit http://en.wikipedia.org/wiki/Ring_circuit which can deliver a very high current. Perhaps our friends over the pond can provide accurate and definitive information David K0LUM. At 5:57 PM +0100 4/6/11, David Pratt wrote: In a recent message, Mike Fatchettw...@w0mu.com writes Can we purchase the European AC cord as it might be handy for those who travel abroad. Bear in mind, Mike, if you travel to the UK you will need yet a different cord. In Great Britain with have a different power plug to mainland Europe. Perhaps UK purchasers of the KPA-500 will get a discount. ;-) -- + - - - - - - - - - - - - - - - - + | David M Pratt, Kippax, Leeds. | | Website: http://www.g4dmp.co.uk | + - - - - - - - - - - - - - - - - + __ 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 __ 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
Re: [Elecraft] KPA-500 K Ordered!
May 15 or sooner! I am on putting money on Sooner! On 4/6/11 10:57 AM, Rob May wrote: Kits won't ship until May 15, factory assembled units start shipping April 15. Grumble, grumble, grumble. Rob NV5E Date: Wed, 6 Apr 2011 10:27:50 -0600 From: w...@w0mu.com To: elecraft@mailman.qth.net Subject: [Elecraft] KPA-500 K Ordered! Can't wait __ 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 __ 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 __ 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
Re: [Elecraft] KPA-500 questions
On page 16 of the KPA500 manual, the K3 cable pinout doesn't seem to include the AUXBUS pin. I assume that's an error in the manual? Also, how much benefit is there to including band-data from the K3? I already have Y-adapters to share the ACC connectors between band-decoders and FSK interfaces trying to plan ahead for something to incorporate the KPA-500, if necessary. Daisy-chaining Y's doesn't really seem appealing ;) ~iain / N6ML On Wed, Apr 6, 2011 at 5:32 PM, Eric Swartz - WA6HHQ, Elecraft e...@elecraft.com wrote: Is part of a proprietary signaling protocol on the auxbus line in the cable. 73, Eric On 4/6/2011 10:20 AM, Joe Subich, W4TV wrote: It also feeds back KPA500 status to the K3, which allows the K3 to change between two user set power levels when the amp is in-line or in standby. (Say 30-45W to drive the amp, and 100W when the amp is bypassed.) Is this done by a contact closure (e.g., DIGIN), AuxBus or CAT? Access to the interface/API would be of value for use with other amplifiers or perhaps tuner. I can think of a couple places to use the information. 73, ... Joe, W4TV On 4/6/2011 1:08 PM, Eric Swartz - WA6HHQ, Elecraft wrote: Answers below 73, Eric --- On 4/6/2011 9:49 AM, Mike Fatchett wrote: The manual describes an optional cable availabe from Elecraft but it is not in the price list. I have a K3 and P3. Is the cable part of the kit or the assembled amp? -- It is an optional cable since it is only applicable to the K3. I'll get it up on the order form ASAP. (We're running hard this morning! :-) Also note that the KPA500 will auto band-switch with just RF and PTT , following the K3 and most other rigs in about 10-15 ms of 1st TX. The AUX cable provides amplifier band switching prior to TX, and also allows the dedicated band buttons on the KPA500 to control K3. It also feeds back KPA500 status to the K3, which allows the K3 to change between two user set power levels when the amp is in-line or in standby. (Say 30-45W to drive the amp, and 100W when the amp is bypassed.) Can we purchase the European AC cord as it might be handy for those who travel abroad. Yes, I'll add this to the order form at the same time. (in the next 15 minutes.) Mike W0MU __ __ 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 __ 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 __ 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 __ 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
Re: [Elecraft] SDR IQ/IF Questions
Okay, Well thank you for the link. I have a little bit of reading up to do on I/Q. So I'm still a little bit confused in the K3 setup situation. So in both the situations with the LP-Pan or the SDR-IQ, the PowerSDR software would receive the same data? I'm having trouble understanding where the analog signals are converted into digital signals. In the case of the LP-Pan, I'm imagining that it happens at the soundcard? In the case of the SDR-IQ, it takes place inside the SDR-IQ... right? Sorry for my misunderstanding here... So my main question still stands, can you use PowerSDR/IF software with an SDR-IQ? Thank You! Geoffrey Wolf AB3LS - Amateur Radio Callsign University of Pittsburgh '14 gr...@pitt.edu liltechd...@me.com (412) 450-1310 -Original Message- From: k...@baymoon.com [mailto:k...@baymoon.com] Sent: Wednesday, April 06, 2011 1:39 PM To: Geoffrey Wolf Subject: Re: [Elecraft] SDR IQ/IF Questions Read this... http://education.tm.agilent.com/index.cgi?CONTENT_ID=4 __ 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
[Elecraft] K3: is it VFO A or B
Hello group, after years of using the K3 i have a simple question: how do i see on the display of the K3 (not with help of remote software) if i`m on VFO A or B ? I`m still confused abt that. 73 Michael -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-is-it-VFO-A-or-B-tp6247010p6247010.html Sent from the Elecraft mailing list archive at 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
Re: [Elecraft] SDR IQ/IF Questions
Hi Geoffrey, Perhaps the ARRL Handbook, Chapter 15 - DSP and Software Radio Design, might help? Section 15.6, in particular describes the math behind calculating the in-phase (I) and quadrature (Q) portions of a wave form. As for specific device compatibility with particular software packages, the release notes for the software should list the hardware it will work with. HTH, On Wed, Apr 6, 2011 at 10:29 AM, Geoffrey Wolf liltechdud...@gmail.com wrote: I've been looking into the LP-Pan which converts the IF output from the K3 into (im guessing) audio signals which then are converted into digital data by a soundcard. The trouble I'm having is understanding what exactly I/Q is. From what I understand, I/Q is digital data that software like CW Skimmer understands. 73, Byron N6NUL - Northern California Contest Club - CU in the 2011 Cal QSO Party 1-2 Oct 2011 - www.cqp.org __ 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
Re: [Elecraft] K3EXREF and Trimble Thunderbolts
No -- Installing a K3EXREF has no impact on VFO use (at any tuning rate). If you adjust REF CAL manually (i.e., with no K3EXREF unit installed), you can move the reference in 1-Hz steps, but as Leigh pointed out, the steps may not be exactly 1 Hz. This is due to DDS granularity. Wayne N6KR On Apr 6, 2011, at 11:08 AM, n...@n5ge.com wrote: Leigh, I'm confused (as usual). Are you saying that with the K3EXREF I will not be able to make a 1Hz change in RX/TX frequency with the VFOs? That doesn't sound so good to me... Please explain. Thanks, Tom N5GE On Wed, 6 Apr 2011 10:28:43 -0700 (PDT), Leigh L. Klotz Jr WA5ZNU le...@wa5znu.org wrote: My experience with REF CAL shows that turning the knob 1 unit does not result in a 1Hz shift in the RX frequency. Leigh/WA5ZNU __ 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 __ 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
Re: [Elecraft] KPA-500 questions
Yes. All modes. 73, Eric On 4/6/2011 11:05 AM, Phil Townsend wrote: Will it transmit on AM? Phil Santa Fe __ 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
Re: [Elecraft] KPA500 to K3 ACC Connector
Yup we will offer a Y cable for that use. Its also currently available from a number of sources. 73, Eric On 4/3/2011 7:56 PM, Joe Subich, W4TV wrote: The cable is not yet available. But thanks for the very valuable input. As the internal KRC2 person, I have similar concerns over access to the Auxbus for the KRC2. There are a lot of concerns over access to the signals on the ACC connector ... including FSK and PTT for digital interfaces, pin 11 for the PR6, Inhibit for external sequencers and the Aux bus for transverters/KRC2. Some sort of pass through connection is almost a must ... 73, ... Joe, W4TV On 4/3/2011 10:08 PM, Jack Brindle wrote: Elliott; The cable is not yet available. But thanks for the very valuable input. As the internal KRC2 person, I have similar concerns over access to the Auxbus for the KRC2. There are also KPA500 AUX signals that are very useful aside form the K3. I am certain we will find a good solution that allows access to the K3 ACC and the KPA500 AUX signals as needed. Jack Brindle, W6FB On Apr 3, 2011, at 6:57 PM, Elliott Lawrence wrote: Can any of the field testers using the ACC Connector interface verify if the K3 end of the cable has a through mounted female connector (back to back male/female conncectors) that the mating connector for the PR-6 pre-amp can use for access to pin 11 without having to make any wiring changes? This would also enable access to the other K3 functions and the KPA500 simultaneously. If not, sounds like a good option to me!! 73 Elliott WA6TLA __ 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 __ 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 __ 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 __ 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
Re: [Elecraft] KPA-500 questions
Will it transmit on AM? Phil Santa Fe __ 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
Re: [Elecraft] K3EXREF and Trimble Thunderbolts
Leigh, I'm confused (as usual). Are you saying that with the K3EXREF I will not be able to make a 1Hz change in RX/TX frequency with the VFOs? That doesn't sound so good to me... Please explain. Thanks, Tom N5GE On Wed, 6 Apr 2011 10:28:43 -0700 (PDT), Leigh L. Klotz Jr WA5ZNU le...@wa5znu.org wrote: My experience with REF CAL shows that turning the knob 1 unit does not result in a 1Hz shift in the RX frequency. Leigh/WA5ZNU __ 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
[Elecraft] KPA500 and K2
Hi folks was reading the manual and it says that the auxbus from the kpa500 is not compatible with the k2. What is the difference between the K2 and K3 to make them incompatible? What functionality is lost from not having the radio in the data loop... Thanks George NE2I __ 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
Re: [Elecraft] AGC Problem
At 01:08 06/04/2011, W4CCS wrote: Recently I have been experiencing a problem with the AGC on my K3 (2090). When I return to receive from transmit, the AGC is turned off and the speaker system is overloaded. This happens on about every 10 to 15 transmissions. It has happened with the K3 sitting on the desk in receive.. This is very annoying and very hard on the ears..!! I've had the same thing happen a few times with my K3 on SSB. First time it happened it made me jump as the audio volume was so loud. It's not consistent, but seems to happen more frequently with longer TX periods. I do use HRD most of the time with my K3+P3. It might only happen once a week with me. Since it seems to be sporadic, I wonder whether there is some kind of timing window for a firmware defect. Say, a combination of commands from HRD plus PTT on/off plus firmware timing. Fortunately, I tend to operate more CW than Phone, so at this stage it's just an occasional irritation. But it would be nice to get this fixed. David M0DHO __ 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
Re: [Elecraft] KPA-500 questions
Correction - It will take a couple days to get the optional KPA500-K3 aux cable up on the order form - we are still checking on our cost for this cable. The extra power cords are now on the form. 73, Eric On 4/6/2011 10:08 AM, Eric Swartz - WA6HHQ, Elecraft wrote: Answers below 73, Eric --- On 4/6/2011 9:49 AM, Mike Fatchett wrote: The manual describes an optional cable availabe from Elecraft but it is not in the price list. I have a K3 and P3. Is the cable part of the kit or the assembled amp? It is an optional cable since it is only applicable to the K3. I'll get it up on the order form ASAP. __ 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
Re: [Elecraft] KPA-500 questions
Yes - that is an error inthe preliminary manual. We will correct it ASAP. 73, Eric On 4/6/2011 10:52 AM, iain macdonnell - N6ML wrote: On page 16 of the KPA500 manual, the K3 cable pinout doesn't seem to include the AUXBUS pin. I assume that's an error in the manual? __ 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
Re: [Elecraft] KPA500 and K2
On Wed, Apr 6, 2011 at 6:05 PM, George n...@optonline.net wrote: Hi folks was reading the manual and it says that the auxbus from the kpa500 is not compatible with the k2. What is the difference between the K2 and K3 to make them incompatible? What functionality is lost from not having the radio in the data loop... Page 11 of the manual answers this... it allows the K3 (only) to automatically adjust its output power when the KPA500 is active, and KPA500 fault conditions are reported to the K3 (although I don't know what the K3 does about it!). You'll be able to drive the KPA500 with a K2 without AUXBUS ... you'll just have to manually adjust the drive level appropriately. ~iain / N6ML __ 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
Re: [Elecraft] KPA-500 questions
Any idea when the assembly manual will be available? I'd like to get an idea how much is involved in building versus ordering a factory-assembled unit. On Wed, Apr 6, 2011 at 11:31, Eric Swartz - WA6HHQ, Elecraft e...@elecraft.com wrote: Yes - that is an error inthe preliminary manual. We will correct it ASAP. 73, Eric On 4/6/2011 10:52 AM, iain macdonnell - N6ML wrote: On page 16 of the KPA500 manual, the K3 cable pinout doesn't seem to include the AUXBUS pin. I assume that's an error in the manual? __ 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 __ 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
Re: [Elecraft] AGC Problem
Going back through some notes here seems to indicate that once I downed HRD while meeting the one and only SSB group I enjoy cured the problem. Why it is so sensitive to only the AGC on/off I have not a clue. But I had it no more after that. 73s Jim On Apr 6, 2011, at 1:00 PM, David Honey wrote: At 01:08 06/04/2011, W4CCS wrote: Recently I have been experiencing a problem with the AGC on my K3 (2090). When I return to receive from transmit, the AGC is turned off and the speaker system is overloaded. This happens on about every 10 to 15 transmissions. It has happened with the K3 sitting on the desk in receive.. This is very annoying and very hard on the ears..!! I've had the same thing happen a few times with my K3 on SSB. First time it happened it made me jump as the audio volume was so loud. It's not consistent, but seems to happen more frequently with longer TX periods. I do use HRD most of the time with my K3+P3. It might only happen once a week with me. Since it seems to be sporadic, I wonder whether there is some kind of timing window for a firmware defect. Say, a combination of commands from HRD plus PTT on/off plus firmware timing. Fortunately, I tend to operate more CW than Phone, so at this stage it's just an occasional irritation. But it would be nice to get this fixed. David M0DHO __ 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 JIM ROGERS, W4ATK w4...@bellsouth.net http://web.me.com/jimrogers_w4atk K3/100 P3 K2/10 __ 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
Re: [Elecraft] Grounds... I know, I know... its a Dead issue BUT... (no Pun)
On 4/6/2011 11:44 AM, Phil Townsend wrote: I really hate to bring it up again... But hear me out: My A/C service entrance does not have a ground rod. My house was built about 25 years ago.' I pulled the service front panel and found the following: All the grounds and neutrals are bonded to the metal chassis as they are supposed to be. But there is no wire for a connection to a ground ROD! It looks like they used a solid metal pipe that houses the big A/C wire inside of this pipe. This pipe IS connected to the service entrance by some metal gland nuts. The 2 1/2 pipe goes outside of the house and is buried underground. It goes off to a transformer that is about 100 yards away. So my question: IS this pipe MY Ground rod? Phil There is only one way to be suremeasure the resistance of the pipe to ground. There are several ways to do this. Do a Google search. Perhaps your electric company will come out and do it for you. 73, Roger __ 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
[Elecraft] KPA500 feature suggestion - band bypass
A feature suggestion ... may not be the best time for it, but incase it could be worked into the dev-cycle somehow I'd like to be able to configure the KPA500 to automatically put itself in standby on certain bands, and active on others... configuration would look like the K3's band-map. The reason... in my remote setup, I have resonant antennas on some bands, and currently use a KAT3 to make other bands (mostly WARC) work. I'd like to be able to use the KPA500 on the main bands, but still use KAT3 on the others... without having to remember to place the KPA500 in standby. at least until the KAT500 is ready :) ~iain / N6ML __ 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
Re: [Elecraft] Just ordered the KPA500
Me too! N5GE On Wed, 6 Apr 2011 10:16:03 -0700, Fred Atchley hamkt...@att.net wrote: It's out! The rush is own. 73, Fred Do or Do-not. There is no 'Try'... ~ Yoda __ 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 __ 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
[Elecraft] [K3] K3EXTREF
On 4/6/2011 5:47 AM, Dave wrote: [in an e-mail with subject Re: [Elecraft] (no subject)] Having done some long term measurements on my k3extref using an HP mHz resolution counter i have seen no corrections during transmit. Once the k3 has warmed up (first thing in the morning it would take 10 minutes for the original tcxo to stabilise enough for jt65/wspr/qrss(5Hz fsk)) I see very few corrections being made on receive either. All I need now is the release of the internal 144 xverter and I am good, frequency stability wise thro 76GHz Dave ww2r So, Dave, how did you manage to get a K3EXTREF? I would like to install one in my new K3, but as far as I can tell, it is not yet being offered for sale. I have long had an interest in the precise measurement of time and frequency, and have several 10 MHz reference oscillators. (The only time that I participated in the ARRL FMT, I was limited by ionospheric doppler, making a better measurement on the West Coast station than from W1AW on the east coast.) 73, Jim K7KK Saint Helens, Oregon, USA Remember, Ignorance is the Mother of Adventure! -- Hagar the Horrible __ 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
[Elecraft] KPA-500 KRC2
I currently use a KRC2 for band decoding with a cable from the K3 ACC connector simply passing AUXBUS to the KRC2. I just spotted Eric's response on AUXBUS 'missing' from the the KPA-500 / K3 cable layout in the KPA-500 manual. But why would the band info be needed if AUXBUS is available? How would a K3 / KPA-500 / KPC2 be connected? K3 AUX ACC Connector Pin 2 (AUXBUS) – KRC2 J2-Pin 6and KRC2 J1-Pin 6 – KPA500 AUX Pin 2 ?? (I do not use any other KPC2 J1/J2 data lines) 73, Bill N2BC __ 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
[Elecraft] KPA500..Now!!!
It's hre..just place my KPA500 order and downloaded the manual. Thanks guys! ..mike AI6II __ 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
Re: [Elecraft] KPA-500 K Ordered!
Rob May wrote: Kits won't ship until May 15, Grumble, grumble, grumble. I have to add to that :grumble grumble. in line for a K bill ny9h/3 __ 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
Re: [Elecraft] KPA500 feature suggestion - band bypass
Yep, this is an obvious requirement. It may already be there but I can't find it. If it is, please point it out for me. Thanks. 73, Tony KT0NY Sent from my iPod On Apr 6, 2011, at 1:53 PM, iain macdonnell - N6ML a...@dseven.org wrote: A feature suggestion ... may not be the best time for it, but incase it could be worked into the dev-cycle somehow I'd like to be able to configure the KPA500 to automatically put itself in standby on certain bands, and active on others... configuration would look like the K3's band-map. The reason... in my remote setup, I have resonant antennas on some bands, and currently use a KAT3 to make other bands (mostly WARC) work. I'd like to be able to use the KPA500 on the main bands, but still use KAT3 on the others... without having to remember to place the KPA500 in standby. at least until the KAT500 is ready :) ~iain / N6ML __ 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 __ 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
Re: [Elecraft] SDR IQ/IF Questions
Oh thank you. I Have the handbook but didn't know there was a DSP section. I'll take a look at that. -- Geoffrey Wolf AB3LS (Amateur Radio Callsign) University of Pittsburgh '14 gr...@pitt.edu liltechd...@me.com (412) 450-1310 On Apr 6, 2011, at 2:07 PM, Byron Servies by...@n6nul.org wrote: Hi Geoffrey, Perhaps the ARRL Handbook, Chapter 15 - DSP and Software Radio Design, might help? Section 15.6, in particular describes the math behind calculating the in-phase (I) and quadrature (Q) portions of a wave form. As for specific device compatibility with particular software packages, the release notes for the software should list the hardware it will work with. HTH, On Wed, Apr 6, 2011 at 10:29 AM, Geoffrey Wolf liltechdud...@gmail.com wrote: I've been looking into the LP-Pan which converts the IF output from the K3 into (im guessing) audio signals which then are converted into digital data by a soundcard. The trouble I'm having is understanding what exactly I/Q is. From what I understand, I/Q is digital data that software like CW Skimmer understands. 73, Byron N6NUL - Northern California Contest Club - CU in the 2011 Cal QSO Party 1-2 Oct 2011 - www.cqp.org __ 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
Re: [Elecraft] KPA-500 KRC2
The KRC2 and KPA500 do a great job of sharing the Auxbus with the K3. You will need a cable that breaks out a connection going to both devices from the K3. The KPA500's Auxbus implementation is transmit only, so it does not receive band information from the K3 but only talks to it as well defined times. This also makes it incompatible with the K2 Auxbus. It co-exists with the KRC2 quite well, so once you have the needed interconnect cable, everything should be very happy, with the KPA amplifying on the correct band, and the KRC2 selecting the desired antenna. The cable is pretty simple. IOn the K3 side, pin 2 connects to the KPA connector's pin 2, and also to the appropriate pin (6 if I remember correctly) on the KRC2's DE9. Also needed is ground, pin 5 on the K3 to pin 5 (again, my memory is foggy on the exact pin number) on the KRC2. If you need help with this, just ask! Jack Brindle, W6FB On Apr 6, 2011, at 12:34 PM, Bill Coleman wrote: I currently use a KRC2 for band decoding with a cable from the K3 ACC connector simply passing AUXBUS to the KRC2. I just spotted Eric's response on AUXBUS 'missing' from the the KPA-500 / K3 cable layout in the KPA-500 manual. But why would the band info be needed if AUXBUS is available? How would a K3 / KPA-500 / KPC2 be connected? K3 AUX ACC Connector Pin 2 (AUXBUS) – KRC2 J2-Pin 6and KRC2 J1-Pin 6 – KPA500 AUX Pin 2 ?? (I do not use any other KPC2 J1/J2 data lines) 73, Bill N2BC __ 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 __ 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
Re: [Elecraft] SDR IQ/IF Questions
If you're interested in DSP code you might try using quisk instead of PowerSDR. It's written in mostly Python and a little bit of C, and works on Linux and Windows. I made some modules for it to talk to the K3 rigcontrol, but those aren't necessary to use it with the LP-PAN output, just for the click-to-qsy and frequency display. Leigh/WA5ZNU -- View this message in context: http://elecraft.365791.n2.nabble.com/SDR-IQ-IF-Questions-tp6246917p6247525.html Sent from the Elecraft mailing list archive at 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
Re: [Elecraft] K3: is it VFO A or B
Hi Michael, main VFO is always VFO A, sub VFO is always VFO B. But that is also indicated by the small A and B right on the display and the arrows inbetween. ;-)) 73, Olli - DH8BQA - Original Message - From: DL5OCD metamo...@t-online.de To: elecraft@mailman.qth.net Sent: Wednesday, April 06, 2011 7:57 PM Subject: [Elecraft] K3: is it VFO A or B Hello group, after years of using the K3 i have a simple question: how do i see on the display of the K3 (not with help of remote software) if i`m on VFO A or B ? I`m still confused abt that. 73 Michael -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-is-it-VFO-A-or-B-tp6247010p6247010.html Sent from the Elecraft mailing list archive at 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 __ 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
Re: [Elecraft] KPA500 and K2
The KPA500 uses new Auxbus commands and is one-way only (KPA500 to K3). The K2 does not know about the KPA500 commands and cannot understand them. There will be a new release of the K3 firmware to support these features about the time the KPA500 starts shipping. The K2 will work with the KPA500 just fine. This is a case where the best way to connect them would be to connect Key out from the K2 to the KPA500, and RF Out from the K2 to the KPA500's RF Input. The KPA500 detected bands and switches incredibly fast (you have to experience it to understand how fast), so you don't actually need anything else. This is also true for all other transceivers and even the K3 itself. So why would you want to connect the KPA to the K3 with the special cable? The new support features that Wayne has added to the K3 will make you wonder how you lived without them. Jack Brindle, W6FB On Apr 6, 2011, at 11:05 AM, George wrote: Hi folks was reading the manual and it says that the auxbus from the kpa500 is not compatible with the k2. What is the difference between the K2 and K3 to make them incompatible? What functionality is lost from not having the radio in the data loop... Thanks George NE2I __ 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 __ 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
Re: [Elecraft] KPA500 feature suggestion - band bypass
Well that sounds very disappointing ... can we gets specs on the maximum reflected power that this sensor circuitry can safely handle ? ~iain / N6ML On Wed, Apr 6, 2011 at 8:33 PM, Jack Brindle jackbrin...@me.com wrote: Think twice before you do this. Subjecting the KPA500 to very high SWR between the transceiver and the antenna (with KPA500 in between, even if at standby) might damage the KPA500 circuitry. The ATU belongs _after_ the KPA500, not before it. Even though the amplifier section is bypassed, there is still sensor circuitry active in the front end of the KPA500 that may be damaged from high power and SWR. If you are going to do something like this, be sure to built a relay box that bypasses the KPA500 to protect it. Jack Brindle, W6FB On Apr 6, 2011, at 11:53 AM, iain macdonnell - N6ML wrote: A feature suggestion ... may not be the best time for it, but incase it could be worked into the dev-cycle somehow I'd like to be able to configure the KPA500 to automatically put itself in standby on certain bands, and active on others... configuration would look like the K3's band-map. The reason... in my remote setup, I have resonant antennas on some bands, and currently use a KAT3 to make other bands (mostly WARC) work. I'd like to be able to use the KPA500 on the main bands, but still use KAT3 on the others... without having to remember to place the KPA500 in standby. at least until the KAT500 is ready :) ~iain / N6ML __ 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 __ 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
[Elecraft] (phase signals RE: SDR IQ/IF Questions
IQ data is a method for describing the characteristics of a wave. IQ uses amplitude and phase angle to describe the wave, see for example http://zone.ni.com/devzone/cda/tut/p/id/3013 The K3 takes an RF signal from an antenna, filters and modulates it. At some point the filtered, modulated signal is made available to an IF out port where it can be used conveniently by various testing and measuring devices. A panadapter takes the IF signal and converts it into IQ signals. These IQ signals can then be used to visually represent characteristics of the signal on a chart or screen. The LP-pan converts the I and Q signals to audio for input into a computer using a sound card. The P3 panadapter directly charts the IQ data onto the built in screen. The SDR-IQ is a standalone software designed receiver. It is designed to hook directly into an antenna source and can be used with software to directly display data about the signal. I do not believe it is designed to work with modulated IF output from a quality receiver, but I could be wrong. The SDR-IQ can be used as a standalone panadapter through a computer, getting its signal direct from the antenna, completely bypassing the transceiver altogether. According to its own manual it does not have much filtering and it can get overwhelmed by other RF sources. The price for the LP-Pan and sound card is less than the price for the SDR-IQ. The P3 costs only a small amount more than the SDR-IQ. The P3 and LP-Pan were compared in a recent QST article. According to the testers, the two approaches are roughly equal in their ability to decode and display weak signals. The LP-Pan has the advantage of allowing the use of a large computer screen for a panadapter. The disadvantage is that it is complex to set up, requires use of buggy computers and software with driver compatibility issues and has a lot of loose wiring. The P3 is a plug and play solution that is reliable and easy to use. The P3 is more closely integrated with the K3. IN the future the P3 is going to allow direct connection to a computer monitor and keyboard. Given all the factors, I do not think the SDR-IQ solution is the best choice here. From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Geoffrey Wolf Sent: Wednesday, April 06, 2011 10:30 AM To: elecraft@mailman.qth.net Subject: [Elecraft] SDR IQ/IF Questions Hello fellow SDR enthusiasts, I have looked around a little bit and haven't found a very definitive answer for the questions that I'm having about the way the K3 and external SDR equipment works. I've been looking into the LP-Pan which converts the IF output from the K3 into (im guessing) audio signals which then are converted into digital data by a soundcard. The trouble I'm having is understanding what exactly I/Q is. From what I understand, I/Q is digital data that software like CW Skimmer understands. Now, I've also been looking at the SDR-IQ which does all of this internally by taking the IF output from the K3 and converts it directly into digital data which is then ferried to the computer over USB, forgoing the need for an extra soundcard. Now, I've seen two versions of PowerSDR. I've seen PowerSDR/IF (looks more developed/supported), and PowerSDR-IQ. What is the difference? I suppose the summary question of this email is. can you use PowerSDR/IF with an SDR-IQ rather than an LP-Pan? I personally would rather buy an SDR-IQ and take that extra hardware stage (possible audio loss) out of the picture. Thanks! Geoffrey Wolf AB3LS - Amateur Radio Callsign University of Pittsburgh '14 gr...@pitt.edu liltechd...@me.com (412) 450-1310 __ 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 __ 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
[Elecraft] K3EXREF for eme and mw
Dave, It hadn't occurred to me that frequency correction would be suspended in Tx. That is both good and bad, as I see it. Good that no phase jumps occur, but bad that transmitter drift is not being corrected. For eme digital modes this means the freq. is solely held by the TCXO over the minute-long transmit sequence. That probably will not affect the K3 when running transverters as there will be no large thermal change in the radio operating at mw levels. It may see more effect when I run HF/6m at 12w on my K3/10, but that probably is much less than those that run the K3/100. I guess I will have to reserve judgement on how well K3EXREF will assist operating at microwaves (mw). As I see it now, the K3EXREF will track out mid-term frequency drift of the TCXO during receive sequences, so the Tx drift (if any) is limited to that which occurs in 1-minute. Transmitting on CW/SSB is not as exacting on frequency accuracy so not likely the user will notice a few Hz drift, if it occurs. Even used with mw transverters, frequency error remains the same as the IF error since it is translated in mixing and not multiplied. Where it would be significant is if the K3 were used RF source in a Multiplier chain to produce a mw CW signal. I am not familiar with what method is favored for mw 24 GHz I see REF CAL offsets being applied consistently for the first 30-min after K3 power-on. Maybe my TCXO has aged more in the first year of use? I saw only 14-Hz freq. error on 28-MHz last fall, while it shows about 36-Hz error on 28-MHz, now. This is with no REF CAL adjustments or K3EXREF running. Once K3EXREF is initiated 28-MHz remains within 1 to 2 Hz on my counter. I will have to monitor 2m when I next run eme to see what happens. 73, Ed - KL7UW -- Message: 5 Date: Wed, 6 Apr 2011 07:47:02 -0500 From: Dave elecr...@g4fre.com Subject: Re: [Elecraft] (no subject) To: elecraft@mailman.qth.net Message-ID: pheojohbikmljjhhfcgfkeamebaa.elecr...@g4fre.com Content-Type: text/plain; charset=us-ascii Having done some long term measurements on my k3extref using an HP mHz resolution counter i have seen no corrections during transmit. Once the k3 has warmed up (first thing in the morning it would take 10 minutes for the original tcxo to stabilise enough for jt65/wspr/qrss(5Hz fsk)) I see very few corrections being made on receive either. All I need now is the release of the internal 144 xverter and I am good, frequency stability wise thro 76GHz Dave ww2r 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 144-1.4kw, 432-100w, 1296-testing*, 3400-winter? DUBUS Magazine USA Rep dubus...@hotmail.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
Re: [Elecraft] KPA-500 KRC2
New manual uploaded. The Auxbus is now shown properly on the cable. Eric On 4/6/2011 12:34 PM, Bill Coleman wrote: I currently use a KRC2 for band decoding with a cable from the K3 ACC connector simply passing AUXBUS to the KRC2. I just spotted Eric's response on AUXBUS 'missing' from the the KPA-500 / K3 cable layout in the KPA-500 manual. But why would the band info be needed if AUXBUS is available? How would a K3 / KPA-500 / KPC2 be connected? K3 AUX ACC Connector Pin 2 (AUXBUS) – KRC2 J2-Pin 6and KRC2 J1-Pin 6 – KPA500 AUX Pin 2 ?? (I do not use any other KPC2 J1/J2 data lines) 73, Bill N2BC __ 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
Re: [Elecraft] KPA500 feature suggestion - band bypass
As Jack points out, the ATU belongs AFTER the KPA500 if you are using non-resonant antennas. if you are using some resonant and some non-resonant, and you want to use the KAT3 for the non-resonant, then attach the resonant antennas to the KPA500 and the non-resonant antennas to the other antenna connector on the KAT3, This way, the KPA500 will not be subjected to the voltage or current extremes that might occur ion the feedline if you attempt to put the KPA500 between the ATU and the antenna. Otherwise, a high-power-capable ATU after the KPA500 will be needed, or you will need to bypass the KPA500. 73, Lyle KK7P Well that sounds very disappointing ... can we gets specs on the maximum reflected power that this sensor circuitry can safely handle ? __ 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
Re: [Elecraft] KPA500 feature suggestion - band bypass
Like most hams, I use an antenna tuner on some bands. When I switch to those bands, the amp will automatically switch but of course it will have to be put in standby so I can adjust the tuner. I'm sure this is a common situation, shared by many others. The auto-bandswitch function of the amp should have an option to put the amp into standby. Otherwise, it will guarantee that eventually the amp will be operated into a mismatch and something will hot switch and/or blow. Tony KT0NY On Wed, Apr 6, 2011 at 3:55 PM, iain macdonnell - N6ML a...@dseven.orgwrote: Well that sounds very disappointing ... __ 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
Re: [Elecraft] KPA500 feature suggestion - band bypass
Hi Ian, Jack is incorrect. It is not as critical as he implied. I operate often into high SWRs with my K3/KAT3 running through the amp in bypass mode. I'll discuss this with the team here and get back to the list with any bypass mode operating limits. 73, Eric On 4/6/2011 1:55 PM, iain macdonnell - N6ML wrote: Well that sounds very disappointing ... can we gets specs on the maximum reflected power that this sensor circuitry can safely handle ? ~iain / N6ML On Wed, Apr 6, 2011 at 8:33 PM, Jack Brindlejackbrin...@me.com wrote: Think twice before you do this. Subjecting the KPA500 to very high SWR between the transceiver and the antenna (with KPA500 in between, even if at standby) might damage the KPA500 circuitry. The ATU belongs _after_ the KPA500, not before it. Even though the amplifier section is bypassed, there is still sensor circuitry active in the front end of the KPA500 that may be damaged from high power and SWR. If you are going to do something like this, be sure to built a relay box that bypasses the KPA500 to protect it. Jack Brindle, W6FB On Apr 6, 2011, at 11:53 AM, iain macdonnell - N6ML wrote: A feature suggestion ... may not be the best time for it, but incase it could be worked into the dev-cycle somehow I'd like to be able to configure the KPA500 to automatically put itself in standby on certain bands, and active on others... configuration would look like the K3's band-map. The reason... in my remote setup, I have resonant antennas on some bands, and currently use a KAT3 to make other bands (mostly WARC) work. I'd like to be able to use the KPA500 on the main bands, but still use KAT3 on the others... without having to remember to place the KPA500 in standby. at least until the KAT500 is ready :) ~iain / N6ML __ 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 __ 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 __ 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
Re: [Elecraft] (phase signals RE: SDR IQ/IF Questions
There is one other consideration with mentioning, and that is that because the LP-PAN uses your computer's sound card, it is at least theoretically subject to image problem as a result of amplitude and phase imbalances between the I and Q channels, where the SDR-IQ passes those data in digital form. Cw Skimmer recognizes this issue and includes automatic amplitude and phase balancing functions in software. 73, Pete N4ZR The World Contest Station Database, updated daily at www.conteststations.com The Reverse Beacon Network at http://reversebeacon.net, blog at reversebeacon.blogspot.com, spots at telnet.reversebeacon.net, port 7000 On 4/6/2011 4:52 PM, George A. Thornton wrote: IQ data is a method for describing the characteristics of a wave. IQ uses amplitude and phase angle to describe the wave, see for example http://zone.ni.com/devzone/cda/tut/p/id/3013 The K3 takes an RF signal from an antenna, filters and modulates it. At some point the filtered, modulated signal is made available to an IF out port where it can be used conveniently by various testing and measuring devices. A panadapter takes the IF signal and converts it into IQ signals. These IQ signals can then be used to visually represent characteristics of the signal on a chart or screen. The LP-pan converts the I and Q signals to audio for input into a computer using a sound card. The P3 panadapter directly charts the IQ data onto the built in screen. The SDR-IQ is a standalone software designed receiver. It is designed to hook directly into an antenna source and can be used with software to directly display data about the signal. I do not believe it is designed to work with modulated IF output from a quality receiver, but I could be wrong. The SDR-IQ can be used as a standalone panadapter through a computer, getting its signal direct from the antenna, completely bypassing the transceiver altogether. According to its own manual it does not have much filtering and it can get overwhelmed by other RF sources. The price for the LP-Pan and sound card is less than the price for the SDR-IQ. The P3 costs only a small amount more than the SDR-IQ. The P3 and LP-Pan were compared in a recent QST article. According to the testers, the two approaches are roughly equal in their ability to decode and display weak signals. The LP-Pan has the advantage of allowing the use of a large computer screen for a panadapter. The disadvantage is that it is complex to set up, requires use of buggy computers and software with driver compatibility issues and has a lot of loose wiring. The P3 is a plug and play solution that is reliable and easy to use. The P3 is more closely integrated with the K3. IN the future the P3 is going to allow direct connection to a computer monitor and keyboard. Given all the factors, I do not think the SDR-IQ solution is the best choice here. From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Geoffrey Wolf Sent: Wednesday, April 06, 2011 10:30 AM To: elecraft@mailman.qth.net Subject: [Elecraft] SDR IQ/IF Questions Hello fellow SDR enthusiasts, I have looked around a little bit and haven't found a very definitive answer for the questions that I'm having about the way the K3 and external SDR equipment works. I've been looking into the LP-Pan which converts the IF output from the K3 into (im guessing) audio signals which then are converted into digital data by a soundcard. The trouble I'm having is understanding what exactly I/Q is. From what I understand, I/Q is digital data that software like CW Skimmer understands. Now, I've also been looking at the SDR-IQ which does all of this internally by taking the IF output from the K3 and converts it directly into digital data which is then ferried to the computer over USB, forgoing the need for an extra soundcard. Now, I've seen two versions of PowerSDR. I've seen PowerSDR/IF (looks more developed/supported), and PowerSDR-IQ. What is the difference? I suppose the summary question of this email is. can you use PowerSDR/IF with an SDR-IQ rather than an LP-Pan? I personally would rather buy an SDR-IQ and take that extra hardware stage (possible audio loss) out of the picture. Thanks! Geoffrey Wolf AB3LS - Amateur Radio Callsign University of Pittsburgh '14 gr...@pitt.edu liltechd...@me.com (412) 450-1310 __ 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 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:
Re: [Elecraft] S meter command
Roger, Are you typing SM$ and hitting enter? Type SM$; (that's a S M dollar sign semicolon) and don't hit enter. The dollar sign is for the sub RX. 73, Mike NF4L On 4/6/2011 9:37 AM, Roger D Johnson wrote: Using the K3 utility I typed in the S meter command, SM$, but the program doesn't return a reading. It just echos the command. Obviously, I'm doing something wrong! 73, Roger __ 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 __ 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
Re: [Elecraft] KPA500 feature suggestion - band bypass
On Wed, Apr 6, 2011 at 9:26 PM, Lyle Johnson k...@wavecable.com wrote: As Jack points out, the ATU belongs AFTER the KPA500 if you are using non-resonant antennas. Kinda tricky to do that with the KAT3 that's already inside the K3 :P if you are using some resonant and some non-resonant, and you want to use the KAT3 for the non-resonant, then attach the resonant antennas to the KPA500 and the non-resonant antennas to the other antenna connector on the KAT3, This way, the KPA500 will not be subjected to the voltage or current extremes that might occur ion the feedline if you attempt to put the KPA500 between the ATU and the antenna. It's not quite that simple... basically, I'm using a Force12 C3SH, which is resonant on 10/15/20, but also provides some gain on the WARC bands, with a tuner for matching. I want to be able to use it QRO on the bands where it's resonant, and barefoot with KAT3 on the 12/17m. Otherwise, a high-power-capable ATU after the KPA500 will be needed, or you will need to bypass the KPA500. I'm hoping the KAT500 (?) will be a solution some day soon. Meanwhile, Eric has given me renewed hope. I'll not cancel my order just yet ;) ~iain / N6ML Well that sounds very disappointing ... can we gets specs on the maximum reflected power that this sensor circuitry can safely handle ? __ 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
Re: [Elecraft] KPA500 feature suggestion - band bypass
Tony - There is a menu set-up option in the KPA500 such that it can either be set to stay in OPERATE when you change bands, or drop to STANDBY when you change bands. Phil - AD5X Like most hams, I use an antenna tuner on some bands. When I switch to those bands, the amp will automatically switch but of course it will have to be put in standby so I can adjust the tuner. I'm sure this is a common situation, shared by many others. The auto-bandswitch function of the amp should have an option to put the amp into standby. Otherwise, it will guarantee that eventually the amp will be operated into a mismatch and something will hot switch and/or blow. Tony KT0NY __ 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
Re: [Elecraft] (phase signals RE: SDR IQ/IF Questions
The URL posted by Mr. Thornton is part of an excellent mid-level tutorial series, quite worth reading. I wanted to mention, in this mix, another SDR which seems to be somewhat unknown in this country; /vide/ http://www.rfsystem.it/shop/... This receiver PMSDR has T/R switching, covers up into the VHF region, and is physically very small and available in kit form. I had one of the early models, and was quite pleased with its quality. In its newest form, it can serve as a stand-alone unit or as a panadapter with, for example, the K3. I believe there is a US/Canadian dealer. QST's articles do not demonstrate any particular expertise or breadth of knowledge in this field. John Ragle -- W1ZI = On 4/6/2011 4:52 PM, George A. Thornton wrote: ...see for example http://zone.ni.com/devzone/cda/tut/p/id/3013 The price for the LP-Pan and sound card is less than the price for the SDR-IQ. The P3 costs only a small amount more than the SDR-IQ. The P3 and LP-Pan were compared in a recent QST article. According to the testers, the two approaches are roughly equal in their ability to decode and display weak signals. __ 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
Re: [Elecraft] KPA500 feature suggestion - band bypass
If the amp is in standby the amp should do whatever it needs to protect itself from high swr or whatever. The other options suggested seem a bit out of the ordinary to me. I will probably buy a LDG tuner anyway as I understand the KAT500 is still in design. The LDG unfortunately does not handle 500 watts on 6m even with their 1k version if I am not mistaken. On 4/6/11 3:30 PM, Eric Swartz - WA6HHQ, Elecraft wrote: Hi Ian, Jack is incorrect. It is not as critical as he implied. I operate often into high SWRs with my K3/KAT3 running through the amp in bypass mode. I'll discuss this with the team here and get back to the list with any bypass mode operating limits. 73, Eric On 4/6/2011 1:55 PM, iain macdonnell - N6ML wrote: Well that sounds very disappointing ... can we gets specs on the maximum reflected power that this sensor circuitry can safely handle ? ~iain / N6ML On Wed, Apr 6, 2011 at 8:33 PM, Jack Brindlejackbrin...@me.com wrote: Think twice before you do this. Subjecting the KPA500 to very high SWR between the transceiver and the antenna (with KPA500 in between, even if at standby) might damage the KPA500 circuitry. The ATU belongs _after_ the KPA500, not before it. Even though the amplifier section is bypassed, there is still sensor circuitry active in the front end of the KPA500 that may be damaged from high power and SWR. If you are going to do something like this, be sure to built a relay box that bypasses the KPA500 to protect it. Jack Brindle, W6FB On Apr 6, 2011, at 11:53 AM, iain macdonnell - N6ML wrote: A feature suggestion ... may not be the best time for it, but incase it could be worked into the dev-cycle somehow I'd like to be able to configure the KPA500 to automatically put itself in standby on certain bands, and active on others... configuration would look like the K3's band-map. The reason... in my remote setup, I have resonant antennas on some bands, and currently use a KAT3 to make other bands (mostly WARC) work. I'd like to be able to use the KPA500 on the main bands, but still use KAT3 on the others... without having to remember to place the KPA500 in standby. at least until the KAT500 is ready :) ~iain / N6ML __ 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 __ 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 __ 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 __ 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
Re: [Elecraft] KPA500 feature suggestion - band bypass
Yes, but then you have to remember to do the right thing for the band that you're changing to, every time... I'm envisaging a band-map where I can specify: 6m Active 10m Active 12m Standby 15m Active 17m Standby 20m Active etc... ~iain / N6ML On Wed, Apr 6, 2011 at 9:56 PM, Phil Debbie Salas dpsa...@tx.rr.com wrote: Tony - There is a menu set-up option in the KPA500 such that it can either be set to stay in OPERATE when you change bands, or drop to STANDBY when you change bands. Phil - AD5X Like most hams, I use an antenna tuner on some bands. When I switch to those bands, the amp will automatically switch but of course it will have to be put in standby so I can adjust the tuner. I'm sure this is a common situation, shared by many others. The auto-bandswitch function of the amp should have an option to put the amp into standby. Otherwise, it will guarantee that eventually the amp will be operated into a mismatch and something will hot switch and/or blow. Tony KT0NY __ 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 __ 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
[Elecraft] (phase signals RE: SDR IQ/IF Questions
Geoff, I have both the SDR-IQ and LP-Pan (but not the P3). Essentially, all are SDR's and convert the RF signal into two signals which are 90-degrees out of phase with each other, thus the I and Q designations. Difference is that the SDR-IQ is a stand-alone receiver covering 500-Hz to 30-MHz and connects directly to a computer using USB (so the I-Q signals are data streams). The LP-Pan is dedicated SDR set on the IF of the K3 (or other radios, if desired) and produces I-Q audio signals sent to a soundcard for conversion to data in your computer. The P3 is a stand-alone panadaptor with built-in SDR for processing the IF from the K3. I bought my LP-Pan for about $150 used. SDR-IQ runs about $500 and P3 even more. You can run a SDR-IQ connected to the K3 IF by tuning it to 8.215 MHz or run it separately. But for your money (if you already have a K3) the LP-Pan is best and will do everything the SDR-IQ does (within the restrictions of the K3). I bought the LP preamps for my LP-Pan as I wanted maximum sensitivity. I recently figured out how to slave two LP-Pan to a single xtal LO so they would be phase-locked and do dual-Rx diversity reception. Info on my website under LINRAD. I only take exception with one paragraph George makes: The K3 takes an RF signal from an antenna, filters and modulates it. The received signal is not modulated. It is filtered, amplified and converted to the first IF for use by external SDR's. The roofing filters do not come into play or the 2nd IF/SDR of the K3, itself. There is no modulation or demodulation by the K3. Demodulation is done by the DSP sw in the computer. LP-Pan is a great little Rx to get acquainted with SDR. 73, Ed - KL7UW -- Message: 51 Date: Wed, 6 Apr 2011 13:52:53 -0700 From: George A. Thornton gthorn...@thorntonmostullaw.com Subject: [Elecraft] (phase signals RE: SDR IQ/IF Questions To: Geoffrey Wolf liltechdud...@gmail.com, elecraft@mailman.qth.net Message-ID: c1a98f53a996d24fb5c20d436c5833049...@nwrrlaw.nwrrlawserver.offsitedataspace.com Content-Type: text/plain; charset=us-ascii IQ data is a method for describing the characteristics of a wave. IQ uses amplitude and phase angle to describe the wave, see for example http://zone.ni.com/devzone/cda/tut/p/id/3013 The K3 takes an RF signal from an antenna, filters and modulates it. At some point the filtered, modulated signal is made available to an IF out port where it can be used conveniently by various testing and measuring devices. A panadapter takes the IF signal and converts it into IQ signals. These IQ signals can then be used to visually represent characteristics of the signal on a chart or screen. The LP-pan converts the I and Q signals to audio for input into a computer using a sound card. The P3 panadapter directly charts the IQ data onto the built in screen. The SDR-IQ is a standalone software designed receiver. It is designed to hook directly into an antenna source and can be used with software to directly display data about the signal. I do not believe it is designed to work with modulated IF output from a quality receiver, but I could be wrong. The SDR-IQ can be used as a standalone panadapter through a computer, getting its signal direct from the antenna, completely bypassing the transceiver altogether. According to its own manual it does not have much filtering and it can get overwhelmed by other RF sources. The price for the LP-Pan and sound card is less than the price for the SDR-IQ. The P3 costs only a small amount more than the SDR-IQ. The P3 and LP-Pan were compared in a recent QST article. According to the testers, the two approaches are roughly equal in their ability to decode and display weak signals. The LP-Pan has the advantage of allowing the use of a large computer screen for a panadapter. The disadvantage is that it is complex to set up, requires use of buggy computers and software with driver compatibility issues and has a lot of loose wiring. The P3 is a plug and play solution that is reliable and easy to use. The P3 is more closely integrated with the K3. IN the future the P3 is going to allow direct connection to a computer monitor and keyboard. Given all the factors, I do not think the SDR-IQ solution is the best choice here. 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 144-1.4kw, 432-100w, 1296-testing*, 3400-winter? DUBUS Magazine USA Rep dubus...@hotmail.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
Re: [Elecraft] (phase signals RE: SDR IQ/IF Questions
Just a couple of extra thoughts. I use an SDR-IQ as a panadapter on the i-f output of my K3 and it works (*almost) flawlessly. (*I have never found anything with a microprocessor in it to work completely flawlessly). So the SDR-IQ can be used both as a standalone receiver with decent demodulation capability with the supplied SpectraVue software and/or as an excellent panadapter with the same software. This has a good (i.e simple) GUI and serves the purpose well. SDR-Radio is another program that supports the SDR-IQ but it is way too complicated and changes sometimes several times a day. Not ready for prime time in my view. (Flame suit on) The LP-Pan works well with a decent soundcard, but suffers from the use of PowerSDR software, which is simply awful in my opinion, and lots of cabling. I have seen a prototype P3 in action, but don't have extensive knowledge of it, other than to note that the screen is too small for my taste and located in the wrong place. The proposed VGA output will solve the screen size problem, but unless I'm mistaken, precludes the use of the same display for several programs. My current setup has a laptop usually with a web browser displayed and N1MM (if contesting) or DXBase (if DXing), MMTTY and the panadapter window all on a second monitor. For my purpose this is the most functional option. Wes N7WS --- On Wed, 4/6/11, George A. Thornton gthorn...@thorntonmostullaw.com wrote: IQ data is a method for describing the characteristics of a wave. IQ uses amplitude and phase angle to describe the wave, see for example http://zone.ni.com/devzone/cda/tut/p/id/3013 The K3 takes an RF signal from an antenna, filters and modulates it. At some point the filtered, modulated signal is made available to an IF out port where it can be used conveniently by various testing and measuring devices. A panadapter takes the IF signal and converts it into IQ signals. These IQ signals can then be used to visually represent characteristics of the signal on a chart or screen. The LP-pan converts the I and Q signals to audio for input into a computer using a sound card. The P3 panadapter directly charts the IQ data onto the built in screen. The SDR-IQ is a standalone software designed receiver. It is designed to hook directly into an antenna source and can be used with software to directly display data about the signal. I do not believe it is designed to work with modulated IF output from a quality receiver, but I could be wrong. The SDR-IQ can be used as a standalone panadapter through a computer, getting its signal direct from the antenna, completely bypassing the transceiver altogether. According to its own manual it does not have much filtering and it can get overwhelmed by other RF sources. The price for the LP-Pan and sound card is less than the price for the SDR-IQ. The P3 costs only a small amount more than the SDR-IQ. The P3 and LP-Pan were compared in a recent QST article. According to the testers, the two approaches are roughly equal in their ability to decode and display weak signals. The LP-Pan has the advantage of allowing the use of a large computer screen for a panadapter. The disadvantage is that it is complex to set up, requires use of buggy computers and software with driver compatibility issues and has a lot of loose wiring. The P3 is a plug and play solution that is reliable and easy to use. The P3 is more closely integrated with the K3. IN the future the P3 is going to allow direct connection to a computer monitor and keyboard. Given all the factors, I do not think the SDR-IQ solution is the best choice here. __ 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
Re: [Elecraft] KPA500 feature suggestion - band bypass
Thanks, Phil. I was hoping someone would reassure me on this. I didn't see it in the manual. Now I'm happy. 73, Tony KT0NY On Wed, Apr 6, 2011 at 4:56 PM, Phil Debbie Salas dpsa...@tx.rr.comwrote: Tony - There is a menu set-up option in the KPA500 such that it can either be set to stay in OPERATE when you change bands, or drop to STANDBY when you change bands. Phil - AD5X __ 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
Re: [Elecraft] KPA500 feature suggestion - band bypass
I just confirmed that there is -no- limitation when using the K3 at 100W with KAT3 to work into a high SWR load through the KPA500 (in stand by pass-through mode). If the KAT3 tunes it, you will be well within the safe range for everyhting. :-) Also, there is a KAT500 in the works for release later this summer if all goes to plan. Stay tuned! 73, Eric WA6HHQ __ 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
[Elecraft] K1 #2973 on the Air
Thanks for the information. Gives me more food for thought. __ 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
Re: [Elecraft] KPA500 feature suggestion - band bypass
See Band Change on the Menu (pg 11). Ron AC7AC -Original Message- Thanks, Phil. I was hoping someone would reassure me on this. I didn't see it in the manual. Now I'm happy. 73, Tony KT0NY On Wed, Apr 6, 2011 at 4:56 PM, Phil Debbie Salas dpsa...@tx.rr.comwrote: Tony - There is a menu set-up option in the KPA500 such that it can either be set to stay in OPERATE when you change bands, or drop to STANDBY when you change bands. Phil - AD5X __ 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 __ 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
[Elecraft] Elecraft Equipment: For Display at DMRAA Hamfest (Des Moines, IA April 23, 2011
Everyone: Lisa (of Elecraft) and I have been discussing Elecraft having a booth at the Des Moines Radio Amateurs' Association Hamfest (http://www.dmraa.com/hamfest) to be held on April 23. My personal K3 (s/n 3672) will be on display, opened up to show filters and the 2 meter module. If you are located within a reasonable distance of Des Moines, Iowa and are willing to: 1) display some of your Elecraft gear, or 2) help man the booth, please contact me off list (kd0...@brianlinn.com). 73s Brian KD0HII __ 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
Re: [Elecraft] K3: is it VFO A or B
Think the question may be more complicated than that. The main RX is always on VFO A. The TX is always on VFO A unless operating SPLIT, in which case the TX is on VFO B If you have it, the Sub RX is always on VFO B, unless operating diversity mode, in which case the Sub RX is on VFO A. If you hit BSET the Sub RX is on VFO B until you toggle away from BSET, even in diversity mode. 73, Guy. On Wed, Apr 6, 2011 at 4:48 PM, Oliver Olli Dröse dro...@necg.de wrote: Hi Michael, main VFO is always VFO A, sub VFO is always VFO B. But that is also indicated by the small A and B right on the display and the arrows inbetween. ;-)) 73, Olli - DH8BQA - Original Message - From: DL5OCD metamo...@t-online.de To: elecraft@mailman.qth.net Sent: Wednesday, April 06, 2011 7:57 PM Subject: [Elecraft] K3: is it VFO A or B Hello group, after years of using the K3 i have a simple question: how do i see on the display of the K3 (not with help of remote software) if i`m on VFO A or B ? I`m still confused abt that. 73 Michael -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-is-it-VFO-A-or-B-tp6247010p6247010.html Sent from the Elecraft mailing list archive at 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 __ 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 __ 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
Re: [Elecraft] Grounds... I know, I know... its a Dead issue BUT... (no Pun)
Phil, My house is about the same vintage. I had the same situation, no ground rod at the service entrance. I put in a ground rod myself. It may or may not have had an adequate ground before but I figured putting in a redundant ground with the ground rod would be a good idea, plus it brings it up to current code requirements. Bob K6UJ On Apr 6, 2011, at 8:44 AM, Phil Townsend wrote: I really hate to bring it up again... But hear me out: My A/C service entrance does not have a ground rod. My house was built about 25 years ago.' I pulled the service front panel and found the following: All the grounds and neutrals are bonded to the metal chassis as they are supposed to be. But there is no wire for a connection to a ground ROD! It looks like they used a solid metal pipe that houses the big A/C wire inside of this pipe. This pipe IS connected to the service entrance by some metal gland nuts. The 2 1/2 pipe goes outside of the house and is buried underground. It goes off to a transformer that is about 100 yards away. So my question: IS this pipe MY Ground rod? Don't follow My Tweets http://twitter.com/PhilTownsend __ 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 __ 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
Re: [Elecraft] KPA500 feature suggestion - band bypass
Can an Ele-Yagi be far behind?! John Harper http://www.ae5x.com/blog Also, there is a KAT500 in the works for release later this summer if all goes to plan. Stay tuned! __ 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
Re: [Elecraft] KPA500 feature suggestion - band bypass
John Harper wrote: Can an Ele-Yagi be far behind?! Don't I wish. OTOH, we're considering bottling our own microbrew. (Might even be more popular than the Kool-aid :) Wayne N6KR __ 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
Re: [Elecraft] KPA500 feature suggestion - band bypass
Sign me up for field test. -Original Message- From: Wayne Burdick Sent: Wednesday, April 06, 2011 8:50 PM To: j...@ae5x.com Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA500 feature suggestion - band bypass John Harper wrote: Can an Ele-Yagi be far behind?! Don't I wish. OTOH, we're considering bottling our own microbrew. (Might even be more popular than the Kool-aid :) Wayne N6KR __ 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 __ 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
Re: [Elecraft] KPA500 feature suggestion - band bypass
Me too !! On Wed, 6 Apr 2011 20:57:16 -0400 Bill Coleman n...@stny.rr.com wrote: Sign me up for field test. -Original Message- From: Wayne Burdick Sent: Wednesday, April 06, 2011 8:50 PM To: j...@ae5x.com Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA500 feature suggestion - band bypass John Harper wrote: Can an Ele-Yagi be far behind?! Don't I wish. OTOH, we're considering bottling our own microbrew. (Might even be more popular than the Kool-aid :) Wayne N6KR __ 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 __ 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 - Web mail provided by NuNet, Inc. The Premier National provider. http://www.nni.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
[Elecraft] Elecraft Ale
I need some. __ 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 __ 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 __ 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
Re: [Elecraft] SDR IQ/IF Questions
Hi Geoffrey. I just read through your thread (I receive the reflector in digest mode). I didn't see one of your questions answered, so I will tackle it... I'm not aware of any version of PowerSDR which works with SDR-IQ. The interface has to be a sound card. My favorite version of PowerSDR is the /IF version by Scott, WU2X. I have tried others like PowerSDR/IQ, but they are not as well integrated with the K3 or LP-Bridge. A recent addition, on which I am a contributing developer, is TRX-Pan. It is much simpler and cleaner looking than PowerSDR/IF and integrates more tightly with the K3. In fact, more tightly than any other panadapter for the K3, I believe. You can read about it here, http://www.telepostinc.com/TRXP.html TRX-Pan does not provide demodulated audio as PowerSDR does, so it can't be used as a sub-rcvr, but it does display and track passbands for both VFOs very nicely. It's more like a P3 with huge screen and mouse control. I wasn't aware that Quisk now supports Windoze. Leigh might have mentioned this and I just forgot. I will play with it when I have some time. Maybe it could be customized to the level that TRX-Pan is in terms of K3 / LP-Bridge integration. Before deciding on a PC based solution versus a partial PC based solution versus a standalone solution, I would download and play with the programs that would be required for any of these. They are all available as a free download, although WU2X requests a donation to support PowerSDR/IF if you decide to go that route. You can set these up to control the rig and display noise from your sound card. This will help you decide if the PC approach is right for you. 73, Larry N8LP On 4/6/2011 5:11 PM, elecraft-requ...@mailman.qth.net wrote: Date: Wed, 6 Apr 2011 13:29:45 -0400 From: Geoffrey Wolfliltechdud...@gmail.com Subject: [Elecraft] SDR IQ/IF Questions To:elecraft@mailman.qth.net Message-ID:000f01cbf480$39143d10$ab3cb730$@gmail.com Content-Type: text/plain; charset=us-ascii Hello fellow SDR enthusiasts, I have looked around a little bit and haven't found a very definitive answer for the questions that I'm having about the way the K3 and external SDR equipment works. I've been looking into the LP-Pan which converts the IF output from the K3 into (im guessing) audio signals which then are converted into digital data by a soundcard. The trouble I'm having is understanding what exactly I/Q is. From what I understand, I/Q is digital data that software like CW Skimmer understands. Now, I've also been looking at the SDR-IQ which does all of this internally by taking the IF output from the K3 and converts it directly into digital data which is then ferried to the computer over USB, forgoing the need for an extra soundcard. Now, I've seen two versions of PowerSDR. I've seen PowerSDR/IF (looks more developed/supported), and PowerSDR-IQ. What is the difference? I suppose the summary question of this email is. can you use PowerSDR/IF with an SDR-IQ rather than an LP-Pan? I personally would rather buy an SDR-IQ and take that extra hardware stage (possible audio loss) out of the picture. Thanks! Geoffrey Wolf AB3LS - Amateur Radio Callsign University of Pittsburgh '14 gr...@pitt.edu liltechd...@me.com (412) 450-1310 __ 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
[Elecraft] First Elecraft Post - KPA-500
I may as well chime in with my first post as a new member to this group and say I ordered a KPA500 today as well. I also called about the optional cable mentioned in the preliminary manual and was told it will be available soon. It was overlooked during the effort to proceed with accepting orders for the amp according to the gentleman I spoke to at Elecraft. 73, Jack W0UCE __ 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
Re: [Elecraft] KPA500 feature suggestion - band bypass
*Hmmm...field testing the brew I assume?...:-)* * * *Hic...me too please!* * * *Ele-Brew Time is 1630 Local, here...:-)* * * *73's* * * *Gary * On 7 April 2011 11:05, Eugene Balinski euge...@nni.com wrote: Me too !! On Wed, 6 Apr 2011 20:57:16 -0400 Bill Coleman n...@stny.rr.com wrote: Sign me up for field test. -Original Message- From: Wayne Burdick Sent: Wednesday, April 06, 2011 8:50 PM To: j...@ae5x.com Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA500 feature suggestion - band bypass John Harper wrote: Can an Ele-Yagi be far behind?! Don't I wish. OTOH, we're considering bottling our own microbrew. (Might even be more popular than the Kool-aid :) Wayne N6KR __ 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 __ 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 - Web mail provided by NuNet, Inc. The Premier National provider. http://www.nni.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 -- *VK4FD - Motorhome Mobile Elecraft Equipment K3 #679, KPA-500 #018 Living the dream!!!* __ 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
Re: [Elecraft] SDR IQ/IF Questions
Larry, A recent addition, on which I am a contributing developer, is TRX-Pan. It is much simpler and cleaner looking than PowerSDR/IF and integrates more tightly with the K3. Does TRX-Pan support SDR-IQ or is it limited to soundcard based devices? 73, ... Joe, W4TV On 4/6/2011 10:09 PM, Larry Phipps wrote: Hi Geoffrey. I just read through your thread (I receive the reflector in digest mode). I didn't see one of your questions answered, so I will tackle it... I'm not aware of any version of PowerSDR which works with SDR-IQ. The interface has to be a sound card. My favorite version of PowerSDR is the /IF version by Scott, WU2X. I have tried others like PowerSDR/IQ, but they are not as well integrated with the K3 or LP-Bridge. A recent addition, on which I am a contributing developer, is TRX-Pan. It is much simpler and cleaner looking than PowerSDR/IF and integrates more tightly with the K3. In fact, more tightly than any other panadapter for the K3, I believe. You can read about it here, http://www.telepostinc.com/TRXP.html TRX-Pan does not provide demodulated audio as PowerSDR does, so it can't be used as a sub-rcvr, but it does display and track passbands for both VFOs very nicely. It's more like a P3 with huge screen and mouse control. I wasn't aware that Quisk now supports Windoze. Leigh might have mentioned this and I just forgot. I will play with it when I have some time. Maybe it could be customized to the level that TRX-Pan is in terms of K3 / LP-Bridge integration. Before deciding on a PC based solution versus a partial PC based solution versus a standalone solution, I would download and play with the programs that would be required for any of these. They are all available as a free download, although WU2X requests a donation to support PowerSDR/IF if you decide to go that route. You can set these up to control the rig and display noise from your sound card. This will help you decide if the PC approach is right for you. 73, Larry N8LP On 4/6/2011 5:11 PM, elecraft-requ...@mailman.qth.net wrote: Date: Wed, 6 Apr 2011 13:29:45 -0400 From: Geoffrey Wolfliltechdud...@gmail.com Subject: [Elecraft] SDR IQ/IF Questions To:elecraft@mailman.qth.net Message-ID:000f01cbf480$39143d10$ab3cb730$@gmail.com Content-Type: text/plain;charset=us-ascii Hello fellow SDR enthusiasts, I have looked around a little bit and haven't found a very definitive answer for the questions that I'm having about the way the K3 and external SDR equipment works. I've been looking into the LP-Pan which converts the IF output from the K3 into (im guessing) audio signals which then are converted into digital data by a soundcard. The trouble I'm having is understanding what exactly I/Q is. From what I understand, I/Q is digital data that software like CW Skimmer understands. Now, I've also been looking at the SDR-IQ which does all of this internally by taking the IF output from the K3 and converts it directly into digital data which is then ferried to the computer over USB, forgoing the need for an extra soundcard. Now, I've seen two versions of PowerSDR. I've seen PowerSDR/IF (looks more developed/supported), and PowerSDR-IQ. What is the difference? I suppose the summary question of this email is. can you use PowerSDR/IF with an SDR-IQ rather than an LP-Pan? I personally would rather buy an SDR-IQ and take that extra hardware stage (possible audio loss) out of the picture. Thanks! Geoffrey Wolf AB3LS - Amateur Radio Callsign University of Pittsburgh '14 gr...@pitt.edu liltechd...@me.com (412) 450-1310 __ 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 __ 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
[Elecraft] [K3] K3+P3+HRD/Logbk +CW Skimmer -How to set it up?
Now that my K-line station (K3-P3-KPA500) is coming together I have a question about setting up CW Skimmer. I am running HRD -LogbookV5 and would like run CW Skimmer to the HRD telnet connection, so the spots come from my own equipment rather than hams out of my listening area. I am limited to one antenna due to a small lot size and currently I don't have the second receiver in the K3. Even if I get the KRX3, I am not sure how I would I be able to connect the P3 and run the skimmer program. What am I missing here? Any help or a point in the right direction would be appreciated. ..mike AI6II __ 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
