Re: [Elecraft] K3: IF output buffer gain modification
Alan Bloom wrote: It's an easy mod. Just remove one surface-mount resistor (cut it in half with side cutters That is a very risky technique - cutters apply a very large and uncontrolled force which can easily tear up the solder pads. It is much safer to melt the solder at both ends of the resistor, swapping quickly between one end and the other, until the resistor gently slides off. (Also a query about the resistor value: does it truly have to be 13K? Is this potential divider so critical that it cannot use one of the readily available standard values of 15K, 12K or even 10K?) -- 73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.co.uk/g3sek __ 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 EZ and .NET
rfenab...@gmail.com wrote: 1. The program will run off line for a limited time and then want to go to Microsoft for updating. .NET itself does not auto-update. It is included in Windows Update, so is potentially updated every second Tuesday of the month, but, in my experience, is only rarely updated; IE accounts for a much higher volume of updates. You can set updating to manual and select only the desired updates. The only real problem with that is that you have to be very careful where you go on the internet, to avoid getting infected by malware that exploits the bugs fixed by the updates. It is relatively slow, but part of that is the result of the general software bloat which strives to cancel out Moore's law. I should be faster than purely interpreted versions of Visual Basic, as it uses just in time compiling to produce optimised code when it is run. There are non-Windows implementations of Common Language Runtime, the underlying technology, although these do tend to be rather slow, as they only do a shallow translation to machine code None of this should indicate that I wouldn't prefer open source C code. It is very unlikely that code re-written for .NET will get rewritten, by its original authors, for any older technology. -- David Woolley we do not overly restrict the subject matter on the list, and we encourage postings on a wide range of amateur radio related topics List Guidelines http://www.elecraft.com/elecraft_list_guidelines.htm __ 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 EZ and .NET
One other thing about .NET is that Microsoft provide free graphical development tools, and even the professional Microsoft development tools are primarily for .NET. That means that anyone who is doing small scale Windows development, and isn't heavily into the use of open source tool chains, is more or less forced into using .NET, especially if the program has a GUI. -- David Woolley we do not overly restrict the subject matter on the list, and we encourage postings on a wide range of amateur radio related topics List Guidelines http://www.elecraft.com/elecraft_list_guidelines.htm __ 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: IF output buffer gain modification
I find removing surface mount resistors, at least on the underside of the K3 main board, quite simple. It's easier than removing wire ended resistors from plated through holes! Remove the bulk of the solder from each end of the component with solder wick, the heat from the iron will often have migrated through the component by this time and it will slide away from the pads, if not dab the other end. I really do not like cutting surface mount resistors and capacitors with side cutters as a means of removing them. Getting the replacement component nice and square on the board is harder than removing the old one as the heat from soldering the second end can be enough to cause the component to shift slightly. 73 Dave, G4AON K3/100 #80 with all the published mods. Ian GM3SEK wrote: /It's an easy mod. Just remove one surface-mount resistor (cut it in //half with side cutters / That is a very risky technique - cutters apply a very large and uncontrolled force which can easily tear up the solder pads. __ 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] Upcoming K3 features
Eric Swartz - WA6HHQ, Elecraft wrote: 1. TX/RX EQ = OFF in digital modes will be implemented in within the next couple of releases. That is extremely good news. 2. RX active while manually tuning through memories will also be implemented shortly, within the next couple of releases. While that may also be good news for many, that is already possible using the channel hopping memories. What I was actually hoping to see that would address the criticism I made of the memory operation is for *all* the attributes that are stored in a memory, such as tx frequency, repeater shift state, access tone frequency etc. to be active when that memory is selected (at least the channel hoppers) so you can just PTT and reply to anyone you hear when scanning those memories, without having to remember to recall the memory contents first. Is that going to be possible? If so, then it seems as if all of my main annoyances with the K3 are going to be addressed very soon. :) It's just a pity that one has to brave so much flak in order to get this information. :( - 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://n2.nabble.com/Upcoming-K3-features-tp3690118p3691283.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] Re： using K2 in ARES
Hello Jim, Thanks for reply. BTW, what are your gears covering the V/U band? cheers, Johnny VR2XMC 寄件人﹕ Jim Campbell ji...@bellsouth.net 收件人 Johnny Siu vr2...@yahoo.com.hk; elecraft@mailman.qth.net 傳送日期﹕ 2009/9月/22 (星期二) 11:52:30 AM 主題： Re: [Elecraft] using K2 in ARES Johnny, I regularly use my K2/100/KAT100 in ARES and RACES. I even have Winlink2000 capability. Works fine. 73, Jim Campbell - W4BQP ARES EC, RACES Radio Officer Spartanburg county, SC Johnny Siu wrote: Yahoo!香港提供網上安全攻略，教你如何防範黑客! 請前往 http://hk.promo.yahoo.com/security/ 了解更多! __ 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: IF output buffer gain modification
K2QI wrote: 2.If I do decide to buy the panadaptor, can Elecraft perform this modification for me if I send the radio back? I've already done most of the hardware mods, but SMD stuff I refuse to deal with. I entirely understand your concern, but having plucked up the courage to do a couple of mods a few months ago I found it really wasn't difficult. Getting an SMT part off is a lot easier than removing through hole parts (believe me, I have the messy looking KSB2 with lifted circuit traces in my K2 to show for it.) I used two soldering irons, one at each end, and the resistor was off in a jiffy. I haven't looked at this particular mod yet since I don't have a need for it but I assume, as with the other mod, that the replacement resistor can be a leaded one if you find that easier. - 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://n2.nabble.com/K3-IF-output-buffer-gain-modification-tp3690284p3691324.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 EZ and .NET
David Woolley (E.L) wrote: One other thing about .NET is that Microsoft provide free graphical development tools, and even the professional Microsoft development tools are primarily for .NET. That means that anyone who is doing small scale Windows development, and isn't heavily into the use of open source tool chains, is more or less forced into using .NET, especially if the program has a GUI. Well they could use Lazarus http://www.lazarus.freepascal.org/ a free open source development tool based on Free Pascal that looks a lot like Borland Delphi. It produces Windows binary executables that don't require .NET. There are also versions for Linux and Mac OS that can create executables for those platforms from the same source code. It's what I use to create KComm. - 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://n2.nabble.com/K3-EZ-and-NET-tp3690253p3691376.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: IF output buffer gain modification
Ian White GM3SEK wrote: (Also a query about the resistor value: does it truly have to be 13K? Is this potential divider so critical that it cannot use one of the readily available standard values of 15K, 12K or even 10K?) When the mod was first published I asked: Just checking to see if this is a typo. 13K or 12K? Bob Friess N6CM (the 1st mixer designer) replied: 13K is a standard 5% value and is correct. I took the 5% tolerance to mean the value is somewhat critical. 73, Bill -- View this message in context: http://n2.nabble.com/K3-IF-output-buffer-gain-modification-tp3690284p3691931.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: IF output buffer gain modification
James Sarte wrote: I've already done most of the hardware mods, but SMD stuff I refuse to deal with. I too was extremely nervous about those little smd parts but I eventually plucked up courage and found it astonishingly easy. You just need plenty of light, a fine bit, tweezers and a magnifying glass to check the work. 73, Pete G4PLZ/F5VNB __ 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: IF output buffer gain modification
On Tue, 2009-09-22 at 03:50 -0700, Bill W4ZV wrote: When the mod was first published I asked: Just checking to see if this is a typo. 13K or 12K? Bob Friess N6CM (the 1st mixer designer) replied: 13K is a standard 5% value and is correct. 13k is not standard in the bag of SMT resistors I have here ;-) so in the 3 K3's I have carried this mod out in so far I used 1K and 12k in series. SMT allows this to be done relatively neatly by standing off each resistor at approximately 45 degrees from the pad, touching in the middle. then solder Takes a bit of fiddling around but it can be done -- 73 Brendan EI6IZ __ 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: IF output buffer gain modification
There is about 0.2 dB difference between using one value or the other, depending on the accuracy of your model. 73 Dave, G4AON K3/100 #80 -- Bill W4ZV wrote: When the mod was first published I asked: Just checking to see if this is a typo. 13K or 12K? Bob Friess N6CM (the 1st mixer designer) replied: 13K is a standard 5% value and is correct. I took the 5% tolerance to mean the value is somewhat critical. __ 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: IF output buffer gain modification
13k is a standard value in the progression of 5% resistors (10, 11, 12, 13, 15, 18, 20, etc.). It is difficult to get 10% resistors anymore, and 5% tolerance is normally used. If your local parts source does not have them, perhaps they are only stocking those values from the list of 10% tolerance values to save shelf space. 73, Don W3FPR Ian White GM3SEK wrote: (Also a query about the resistor value: does it truly have to be 13K? Is this potential divider so critical that it cannot use one of the readily available standard values of 15K, 12K or even 10K?) __ 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: IF output buffer gain modification
Dave G4AON wrote: Bill W4ZV wrote: When the mod was first published I asked: Just checking to see if this is a typo. 13K or 12K? Bob Friess N6CM (the 1st mixer designer) replied: 13K is a standard 5% value and is correct. I took the 5% tolerance to mean the value is somewhat critical. There is about 0.2 dB difference between using one value or the other, depending on the accuracy of your model. 13K is a standard value in the E24 series, which covers a full decade in 24 steps. Each step is about 10% above the previous value, so E24 resistors have to be manufactured with a tolerance of 5% or better. http://www.logwell.com/tech/components/resistor_values.html But *standard* values aren't the same as the most-used *common* values. The ones most used are the well known E6 series (1.0, 1.5, 2.2 etc) or the E12 series (1.0, 1.2, 1.5, 1.8, 2.2 etc). Most RF circuits don't operate within 5% margins, so they can get along fine with E6 and E12 values. -- 73 from Ian GM3SEK http://www.ifwtech.co.uk/g3sek __ 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 firmware 2 years on and still much to do
EI6IZ sed: * If you look at the sheet that came with your TCXO you might notice that it does a good deal better than 0.5ppm without any calibration over the temperature range that your radio goes through during operation. The TCXO in my k3 is better than 0.5ppm over the temp range -10C to +50C. My Front panel temp as measured by the K3 is always around 37-40 C and does not vary much you mileage may vary but the K3 with the TCXO already comfortably exceeds 0.5ppm without the additional calibration. (which is coming.) Therefore the K3 does not 'fail' to meet the 0.5ppm spec at present * EI6IZ apparently had good luck with his particular TCXO. My TCXO data sheet says, in part: -10.00 -.39 0.00 -.25 10.00 -.03 19.99.05 29.98.29 40.02.60 50.00.73 As can be seen, my TCXO barely meets the 1 ppm spec from 0C to 50C, as .73 - (-.25) = .98, but would fail that spec if measured from -10C to 50C. So my particular TCXO does no better than its 1 ppm spec, and does not achieve 0.5 ppm stability until it warms up to its operating temperature, near body temperature (which is 37C). While it is warming up, from room temperature at about 20C to operating temperature at about 40C, my TCXO varies .60 - .05 = .55 ppm, more drift than 0.5 ppm even during warmup in a typical house. 73, Paul W8TM __ 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] In Fear and Trepidation
I want to make an observation on the recent discussion concerning the K3 and what it can do and what is can't do and what people want it to do. This year at Dayton, I purchased a Hammarlund HQ110 for grins and giggles. The price was right and I carried it home. This is a nice unit and works rather well. But, through the years (44 years) I had forgotten how much better receivers are today than yesteryear. It takes 30 minutes for the 110 to stop drifting and become stable. Selectivity is fun too...as now I remember that as a Novice and General I had to copy one signal through a bandwidth that allowed three to four signals at the same time. And, as a Novice, working split was the NORM! I guess it is a matter of perception...but I am glad for today's modern day receivers. They are vastly - (and that is an understatement) better...from the 60's and have gotten better year and year over the decades. We've all grown with the hobby and I wonder if we need to stand back and reflect on where we have come from (short term and long term) and really appreciate the technology around us today. Lee Buller K0WA In our day and age it seems that Common Sense is in short supply. If you don't have any Common Sense - get some Common Sense and use it. If you can't find any Common Sense, ask for help from somebody who has some Common Sense. Is Common Sense divine? __ 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 Monitoring outgoing PSK31 Signal
I have searched the archives but cannot find anything concerning how to monitor the outgoing PSK31 signal from the K2. In the PRO3 one just pushes the Monitor button. I am using the SignaLink USB interface with Digipan software at 5 watts. I would like to check my outgoing audio. Thanks. Ron -- View this message in context: http://n2.nabble.com/K2-Monitoring-outgoing-PSK31-Signal-tp3693487p3693487.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] Upcoming K3 features
Please add 1. Notch in the AGC loop 2. Possibly narrower manual notch (like in IC-7000) Before the automatic notch was slow but now it seems to be much faster. Undocumented fix or my imagination? Ignacy -- View this message in context: http://n2.nabble.com/Upcoming-K3-features-tp3690118p3693927.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] K3 Audio Response - Version 3.33 Firmware
I am a CW operator for over 30 years, first professionally and now only as hobby. My measuring instruments are my ears and the operation of the K3. I never had such a good receiver but at first disliked the audio a bit. It was written in many postings and many of you gave a thorough technical explanation even with different 'colors' of the noise. Still I trusted on my ears as a judge and i can say that the new release very much improves the way of listening to CW, SSB and AM signals. The K3 now can really sound the way I like a communications receiver to do. It is just a bit 'warmer' sound than before that makes listening more comfortable and less tiring. I still have no clue about the best NR setting. It would make sense to have some background for which situation which setting is developed. Also I sometimes wonder why there is no full decoupling possibility with DSP technology, meaning what I hear in my headphone is only a clean sinus of 600 Hz, generated by the DSP based on its input . Is this strange thinking for CW, or technically impossible? (No immediate feature request ;). Anyway, thanks for all the good work and 3.33 is an improvement again. Compliments for all the development work being done. I am still proud to operate a K3. Dick PA3CW -- View this message in context: http://n2.nabble.com/K3-Audio-Response-Version-3-33-Firmware-tp3673422p3694016.html Sent from the [K3] 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] Upcoming K3 features
Thanks for the clarification, Eric, and the interesting general comments. In my view you're getting some difficult balances about right so far, including allocation of resources between enhancements to existing products and bringing out new ones. Although I would add, quietly, that shipment dates for new products often seem optimistic :-) As regards the K3 prioritised list, items previously said to be on it are presumably still there so that, for example, unless we hear otherwise we'll eventually see a f/w feature that can automatically turn on MON at a preset level when a DVR recording is being transmitted. (Couldn't resist mentioning it!) 73 to all Geoff G3UCK - Original Message - From: Eric Swartz - WA6HHQ, Elecraft e...@elecraft.com To: Elecraft List elecraft@mailman.qth.net Sent: Tuesday, September 22, 2009 12:56 AM Subject: [Elecraft] Upcoming K3 features As a general comment, we have a very specific prioritized list of items that we are working on for the K3. some we've talked about, some we haven't. __ 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] K2 Monitoring outgoing PSK31 Signal
KM4VX wrote: I have searched the archives but cannot find anything concerning how to monitor the outgoing PSK31 signal from the K2. In the PRO3 one just pushes the Monitor button. I am using the SignaLink USB interface with Digipan software at 5 watts. I would like to check my outgoing audio. Thanks. Ron There is no audio monitor on the K2. In any case, it is really the trasnmitted signal you need to monitor to check your IMD. If you have no more than one bar of ALC showing in r mode then the IMD should be very good at 5 watts. There used to be a very useful tool called the IMD Meter designed by KK7UQ which you could buy from US Interface. Sadly it appears to be no longer available since the owner of US Interface became a SK. You can still find information about it if you use Google. If anyone knows where you can still get these things I'd like to know, because I have one and wrote about it on my website, and I'm often asked where you can get them from. - 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://n2.nabble.com/K2-Monitoring-outgoing-PSK31-Signal-tp3693487p3694036.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] Upcoming K3 features
I too have noted an improvement in speed. I would prefer the notch actually be wider or adjustable in width, some of the tune up clowns on SSB have some very large signals. 73, Bill K9YEQ -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ignacy Sent: Tuesday, September 22, 2009 11:08 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Upcoming K3 features Please add 1. Notch in the AGC loop 2. Possibly narrower manual notch (like in IC-7000) Before the automatic notch was slow but now it seems to be much faster. Undocumented fix or my imagination? Ignacy __ 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] Upcoming K3 features
2009/9/22 Geoffrey Downs geoff...@downs.globalnet.co.uk As regards the K3 prioritised list, items previously said to be on it are presumably still there so that, for example, unless we hear otherwise we'll eventually see a f/w feature that can automatically turn on MON at a preset level when a DVR recording is being transmitted. Oh yes please! Totally away from the TX audio. This IMHO is a much needed option! 73 Ian -- Ian J Maude, G0VGS SysOp GB7MBC HB9DRV-9 DX Clusters Member RSGB, GQRP 9838, FISTS 14077 | K3 #455 http://www.amateurradiotraining.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] K3: IF output buffer gain modification
On Tue, 2009-09-22 at 08:22 +0100, Ian White GM3SEK wrote: (Also a query about the resistor value: does it truly have to be 13K? Is this potential divider so critical that it cannot use one of the readily available standard values of 15K, 12K or even 10K?) No, the exact value is not critical. Alan N1AL __ 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] K2 Monitoring outgoing PSK31 Signal
I believe the IMD meter is still available here: http://usinterface.com/naviusa_002.htm Don, K5DW Julian, G4ILO wrote: There used to be a very useful tool called the IMD Meter designed by KK7UQ which you could buy from US Interface. Sadly it appears to be no longer available since the owner of US Interface became a SK. You can still find information about it if you use Google. If anyone knows where you can still get these things I'd like to know, because I have one and wrote about it on my website, and I'm often asked where you can get them from. __ 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: IF output buffer gain modification
hi, fellow elecrafters, if you should have a problem with the 13 kOhm resistor, take two. 47k in parallel with an 18kOhm resistor, both SMD, solded together as piggyback onto the solderpads. It fits great. 73 from Germany Hans, DF5SR __ 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] KXV3A Upgrade
G'day, Just received and installed the KXV3A Upgrade. Oddly you receive the whole KXV3A package including PCB, connector panel, TMP cable and hardware. For an upgrade only the PCB is required. When reinstalling the KIO3 assembly the TMP cable to the KXV3A has to fit in a notch in the KIO3 main board adjacent to the side panel. This is a pretty tight fit and I find it a lot easier to do by removing the rearmost side panel screws so that the panel can be sprung out a little. Now to put the old KXV3 with RF protection mod into the post to W6. Regards, Mike VP8NO __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 VHf use
Since one week I am a K3 owner with the KXV3A option. When hooking up the XV50,144,222,432 transverters I noticed that the only option with the K3 and the KXV3A is separate transmit and receive IF ports. Is there a setting in the K3 to share a single IF port for TX and RX? It would save me some cables. Also is there a setting in the K3 that when one switches from SSB to CW the frequency is automatically adjusted for the CW offset. This is really handy for VHF/UHF work as there is often a mix of SSB and CW signals during band openings. One often switches from SSB to CW for a weak CW DX signal. It is very frustrating having to retune the weak station when switching modes. The Icom 756 and Flexradio PowerSDR have this option. The K3 with the excellent XV transverters should have this option available too. 73 Maarten N1DZ __ 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] K2 Monitoring outgoing PSK31 Signal
Ron, The K2 has no provision for aural monitoring of digital mode audio. You can get that from your computer speakers if you want to hear it. BUT - that is only for inbound audio, and has nothing to do with the transmitted signal. The advice of others to use an IMD meter is a good one. If you wish tohear the received audio in the speaker while sending audio to the compter soundcard, there is a way, and it involves adding a fixed audio output to the K2 that can be used to drive the soundcard - that leaves the AF gain control as normal while providing a fixed audio level to the soundcard. See my website www.w3fpr.com for more information. Tom Hammond is currently providing board for this fixed audio addition to the K2, but his supply is running short - for information about the boards, go to www.n0ss.net and look in the K2 related file section. 73, Don W3FPR KM4VX wrote: I have searched the archives but cannot find anything concerning how to monitor the outgoing PSK31 signal from the K2. In the PRO3 one just pushes the Monitor button. I am using the SignaLink USB interface with Digipan software at 5 watts. I would like to check my outgoing audio. Thanks. Ron __ 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 VHf use
On Tue, 22 Sep 2009 19:01:27 -0400, Maarten n...@cox.net wrote: Since one week I am a K3 owner with the KXV3A option. When hooking up the XV50,144,222,432 transverters I noticed that the only option with the K3 and the KXV3A is separate transmit and receive IF ports. Is there a setting in the K3 to share a single IF port for TX and RX? It would save me some cables. Also is there a setting in the K3 that when one switches from SSB to CW the frequency is automatically adjusted for the CW offset. This is really handy for VHF/UHF work as there is often a mix of SSB and CW signals during band openings. One often switches from SSB to CW for a weak CW DX signal. It is very frustrating having to retune the weak station when switching modes. The Icom 756 and Flexradio PowerSDR have this option. The K3 with the excellent XV transverters should have this option available too. 73 Maarten N1DZ __ [snip] When using the K3 to switch between USB and CW you must set the CW offset to CW REV by holding the ALT button which will switch the CW output to USB. The normal CW offsets to LSB. That is why you are having to retune. Tom, N5GE n...@n5ge.com K3 #806, K3 #1055, PR6, XV144, XV432, KRC2, W1 and other small kits. 2 W2's on order 1 K144XV on order http://www.n5ge.com http://www.swotrc.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2 Monitoring outgoing PSK31 Signal
I appreciate the helpful responses. My objective was to hear the audio output of the PSK31 signal from the K2. That appears to be impossible and probably unnecessary provided the ALC reading is correct. I believe my ALC was a bit high, and after lowering it to just above one bar on the meter I am able to work DX stations throughout Europe and into Latin America with 5 watts using a decent vertical. I don't need the IMD meter but will keep the recommendations on file. QRP is a real challenge with PSK31; otherwise I think I would use E-Mail. Nice that there is something in this hobby for everyone. KM4VX wrote: I have searched the archives but cannot find anything concerning how to monitor the outgoing PSK31 signal from the K2. In the PRO3 one just pushes the Monitor button. I am using the SignaLink USB interface with Digipan software at 5 watts. I would like to check my outgoing audio. Thanks. Ron -- View this message in context: http://n2.nabble.com/K2-Monitoring-outgoing-PSK31-Signal-tp3693487p3696480.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: IF output buffer gain modification
On Tue, 2009-09-22 at 19:08 -0400, amstel78 wrote: So would it be advisable to wait for the P3 to come out before performing this modification? If it's not really needed, then what's the point? My antenna system isn't that great anyway... I need to do some more experimenting to get a better handle on this, but I think it just depends on conditions. With the K3 preamp off on a quiet band (e.g. VHF) you definitely want the mod. On 80 meters in the summertime it's not necessary. If you don't do the mod you might need to use the preamp more often than you otherwise would. There's no reason not to do the modification other than the hassle factor. The P3 automatically bypasses its own preamplifier if the signal starts to over-range. Alan N1AL __ 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: IF output buffer gain modification
Are there any thoughts as to the accuracy level in dBm in correlation with this mod? As well as any sort of absolute accuracy specs on what we expect to see with this box? On Tue, 2009-09-22 at 16:58 -0700, Alan Bloom wrote: On Tue, 2009-09-22 at 19:08 -0400, amstel78 wrote: So would it be advisable to wait for the P3 to come out before performing this modification? If it's not really needed, then what's the point? My antenna system isn't that great anyway... I need to do some more experimenting to get a better handle on this, but I think it just depends on conditions. With the K3 preamp off on a quiet band (e.g. VHF) you definitely want the mod. On 80 meters in the summertime it's not necessary. If you don't do the mod you might need to use the preamp more often than you otherwise would. There's no reason not to do the modification other than the hassle factor. The P3 automatically bypasses its own preamplifier if the signal starts to over-range. Alan N1AL __ 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] K3 VHf use
Yes I figured that one out. Going from SSB to CWrev I still have to retune (+600Hz) to copy CW as the CW signal is at zero beat. Going from CW to SSB I have to tune 600Hz down. If you work VHF/UHF you understand what a convenience it is when you change from SSB to CW mode, that the zero beat frequency shifts by whatever your selected CW pitch is so you do not have to retune again. Maarten N1DZ -Original Message- From: Radio Amateur N5GE [mailto:n...@n5ge.com] Sent: Tuesday, September 22, 2009 7:46 PM To: Maarten Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 VHf use On Tue, 22 Sep 2009 19:01:27 -0400, Maarten n...@cox.net wrote: Since one week I am a K3 owner with the KXV3A option. When hooking up the XV50,144,222,432 transverters I noticed that the only option with the K3 and the KXV3A is separate transmit and receive IF ports. Is there a setting in the K3 to share a single IF port for TX and RX? It would save me some cables. Also is there a setting in the K3 that when one switches from SSB to CW the frequency is automatically adjusted for the CW offset. This is really handy for VHF/UHF work as there is often a mix of SSB and CW signals during band openings. One often switches from SSB to CW for a weak CW DX signal. It is very frustrating having to retune the weak station when switching modes. The Icom 756 and Flexradio PowerSDR have this option. The K3 with the excellent XV transverters should have this option available too. 73 Maarten N1DZ __ [snip] When using the K3 to switch between USB and CW you must set the CW offset to CW REV by holding the ALT button which will switch the CW output to USB. The normal CW offsets to LSB. That is why you are having to retune. Tom, N5GE n...@n5ge.com K3 #806, K3 #1055, PR6, XV144, XV432, KRC2, W1 and other small kits. 2 W2's on order 1 K144XV on order http://www.n5ge.com http://www.swotrc.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] [K2] KAT100 error
My KAT100 was working fine then developed a problem recently. For those wondering what happened to my for sale listing this is why I removed it. At first the tune sequence would tune at times and other times it would stay at 9.9-1 and the lights would work most of the time. (Using a dummy load as well as an antenna) I checked the solder connections in the KAT100 and retouched a few. I noticed no change in behavior. I put the radio away for a few days and revisited the problem today Before doing anything I did a SWR Bridge alignment on the KPA100 just to be sure nothing had changed. I adjusted for 0 voltage using a DMM as instructed in the manual. Currently, the tune sequence gives a 1.0-1 reading on the K2 meter but the scale lights on the KAT100 do not light up while tuning or when keying. The antenna and power lights are working properly. When keying 100 watts into a dummy load the power is reduced by various amounts depending on the band and the K2 shows HI Refl, the same symptoms using an antenna. Using the menu for tuner readings, after hitting tune in the dummy load, I get: L00.4 C0.08 nET2 t 197 E243 Init F1.05 L0-L8 get relay clicks as well as C0-C8 and N1-N2 I am using the The KAT100/KPA100 in their own enclosure. Any help on where I should start from here to solve the problem? Thanks, Damon (Don .. I sent you an email on this when the symptoms first started, maybe it was lost in SPAM) - W4HDM-DAMON-K2#473 -- View this message in context: http://n2.nabble.com/KAT100-error-tp3696887p3696887.html Sent from the [K2] 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] In Fear and Trepidation
Thanks Lee, We often forget what we had compared to what we have now. Modern rigs, with Elecraft being the epitome, are so superior that chasing a station around the band is a thing of the past. Of course, the exception is Straight Key Night with the nostalgia of chirp , drift, and more. 72/73, Neal WA6OCP Lee Buller wrote: .. I guess it is a matter of perception...but I am glad for today's modern day receivers. They are vastly - (and that is an understatement) better...from the 60's and have gotten better year and year over the decades. We've all grown with the hobby and I wonder if we need to stand back and reflect on where we have come from (short term and long term) and really appreciate the technology around us today. Lee Buller K0WA In our day and age it seems that Common Sense is in short supply. If you don't have any Common Sense - get some Common Sense and use it. If you can't find any Common Sense, ask for help from somebody who has some Common Sense. Is Common Sense divine? __ 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 -- View this message in context: http://n2.nabble.com/In-Fear-and-Trepidation-tp3693470p3696911.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] In Fear and Trepidation
And the excitement, and memories found so fondly during the Classic Exchange event. With the Johnson rigs, the Heathkit, there were Collins, Drakes, Hallis, HRO, SX, DX100s, and DX40s, Eico 720s, and more.. and during the Classic Exchange, part of the exchange is finding out what it is you are talking to... sometimes it was right obvious, other times, I had to be told. Then, there were a handful of K2s running qrp... too. --... ...-- Dale - WC7S in Wy Date: Tue, 22 Sep 2009 18:49:00 -0700 From: wir...@prodigy.net To: elecraft@mailman.qth.net Subject: Re: [Elecraft] In Fear and Trepidation Thanks Lee, We often forget what we had compared to what we have now. Modern rigs, with Elecraft being the epitome, are so superior that chasing a station around the band is a thing of the past. Of course, the exception is Straight Key Night with the nostalgia of chirp , drift, and more. 72/73, Neal WA6OCP Lee Buller wrote: .. I guess it is a matter of perception...but I am glad for today's modern day receivers. They are vastly - (and that is an understatement) better...from the 60's and have gotten better year and year over the decades. We've all grown with the hobby and I wonder if we need to stand back and reflect on where we have come from (short term and long term) and really appreciate the technology around us today. Lee Buller K0WA In our day and age it seems that Common Sense is in short supply. If you don't have any Common Sense - get some Common Sense and use it. If you can't find any Common Sense, ask for help from somebody who has some Common Sense. Is Common Sense divine? __ 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 -- View this message in context: http://n2.nabble.com/In-Fear-and-Trepidation-tp3693470p3696911.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 _ Bing™ brings you maps, menus, and reviews organized in one place. Try it now. http://www.bing.com/search?q=restaurantsform=MLOGENpubl=WLHMTAGcrea=TEXT_MLOGEN_Core_tagline_local_1x1 __ 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] Nabble, missing messages
I've heard that Nabble has made changes to fix the posting problem. If you have new examples of missing received messages that happen after now, please let me know. ab2tc wrote: No, the meassage I was looking for was from Phil, NS7P, dated 2009-09-20 1:07:13 with the subject [Elecraft] Elecraft SSB Net Announcement - frequency change and was announcing yesterday's net and the QSY. I am responding here as I do think this should be of interest to other people. Nabble is *very* convenient and I use it whenever I can. BTW, I have never had any problems posting through Nabble, only finding the messages I want to respond to. AB2TC - Knut Leigh L. Klotz Jr WA5ZNU wrote: Knut, I set up the additional archives for the convenience of easy web searches and for easy topic sorting. snip However, I did a quick search on 14.314 and found a message from yesterday about the net frequency. http://n2.nabble.com/forum/Search.jtp?forum=365791local=yquery=14.314 Is this the message you were looking for? snip again Leigh/WA5ZNU -- View this message in context: http://n2.nabble.com/Nabble-missing-messages-tp3680399p3697084.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 VHf use
As a frequent VHF contester, I know what you mean! Fortunately, there is a setting on the K3 that lets you simply send CW while in SSB mode, and it takes care of all of the offsets for you! Alas, I don't recall what it is, but it was added to the firmware several months ago. Try it! You'll like it! On Tue, 22 Sep 2009, Maarten wrote: Yes I figured that one out. Going from SSB to CWrev I still have to retune (+600Hz) to copy CW as the CW signal is at zero beat. Going from CW to SSB I have to tune 600Hz down. If you work VHF/UHF you understand what a convenience it is when you change from SSB to CW mode, that the zero beat frequency shifts by whatever your selected CW pitch is so you do not have to retune again. Maarten N1DZ -Original Message- From: Radio Amateur N5GE [mailto:n...@n5ge.com] Sent: Tuesday, September 22, 2009 7:46 PM To: Maarten Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 VHf use On Tue, 22 Sep 2009 19:01:27 -0400, Maarten n...@cox.net wrote: Since one week I am a K3 owner with the KXV3A option. When hooking up the XV50,144,222,432 transverters I noticed that the only option with the K3 and the KXV3A is separate transmit and receive IF ports. Is there a setting in the K3 to share a single IF port for TX and RX? It would save me some cables. Also is there a setting in the K3 that when one switches from SSB to CW the frequency is automatically adjusted for the CW offset. This is really handy for VHF/UHF work as there is often a mix of SSB and CW signals during band openings. One often switches from SSB to CW for a weak CW DX signal. It is very frustrating having to retune the weak station when switching modes. The Icom 756 and Flexradio PowerSDR have this option. The K3 with the excellent XV transverters should have this option available too. 73 Maarten N1DZ __ [snip] When using the K3 to switch between USB and CW you must set the CW offset to CW REV by holding the ALT button which will switch the CW output to USB. The normal CW offsets to LSB. That is why you are having to retune. Tom, N5GE n...@n5ge.com K3 #806, K3 #1055, PR6, XV144, XV432, KRC2, W1 and other small kits. 2 W2's on order 1 K144XV on order http://www.n5ge.com http://www.swotrc.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ 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] In Fear and Trepidation
Modern rigs, with Elecraft being the epitome, are so superior that chasing a station around the band is a thing of the past. --- While I have no argument with the sentiment, superior is in the mind of the user. I greatly appreciate state-of-the-art, having worked with the most current designs required for aviation and shipboard communications as well as with Ham band rigs like the Elecraft designs. But are they superior to older gear in significant ways other than that needed for highly-competitive radiosporting? That's an open question in my mind. I've flown a variety of light planes, but would never compare them to an airliner. They're two different worlds even though we share the same airspace with balloons, ultralights and hang gliders. I find the same is true with radios on the Ham bands. Radiosporting is only one part of Ham radio. There are many other aspects. There's a different skill involved in working stations using a regen receiver or even an old Hammarlund (or whatever) that can drift, and there's a different skill involved when working stations with fixed-frequency crystal controlled rig running moderate power as compared to a rig that VFO's quickly - even hopping between bands - and can crank out anything from 100 watts to the limit (and beyond ;-). State of the art is the state of the mind for only some who share the Ham bands. There are many others who have an equal right to share the frequencies for whom state of the art is immaterial to their enjoyment of our hobby. Many of them delight in operating old gear and demonstrating the extraordinary skill they require. And, from the e-mails I've exchanged with other Elecraft owners over the past decade since I built my K2, many of them own Elecraft rigs as well. We don't hear a lot from them because they are extremely happy with what their Elecraft rig delivers. Not being highly-competitive radiosporters, they aren't concerned with getting a lot of extra features that might help them save microseconds to win the next contest. They're quite happy with the core features they have, whether it's a K1, KX1, K2 or K3 on their operating desk, and consider any shortcomings they find to be something to overcome with greater skill at the key or mic, just as Hams have for a century now. Nor do they have an issue with the radiosporters who worry about saving microseconds in a contest, just as I don't worry about the guy with the high performance airplane while I'm enjoying the sky doing a few lazy rolls in a PT13 or J3 cub. Like the sky above, Ham radio has a huge range of people who find their own enjoyment on the airwaves. Ron AC7AC __ 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: IF output buffer gain modification
Are there any thoughts as to the accuracy level in dBm in correlation with this mod? As well as any sort of absolute accuracy specs on what we expect to see with this box? The absolute accuracy will almost certainly not be better than about +/- 2.0 dB... which is the best that spectrum analyzers from RohdeSchwarz, Agilent, and others could do. Most people are quite surprised to hear that their US$70,000 spectrum analyzer could be off by 2.0 dB. But that is the reality. An error analysis of a spectrum analysis measurement is well-known: frequency response, mismatch, IF gain (reference level), and calibrator uncertainty all come into play. The result is somewhere in the neighborhood of +/- 1.8 dB or worse. That is considered quite good! When making a relative measurement (the difference between two signals) it's even worse. For more information and specific examples, see http://cp.literature.agilent.com/litweb/pdf/5968-3659E.pdf . The main thing to remember is that a panadaptor display is good, but it's not absolutely accurate in power. If you need excellent power accuracy, you must use a power meter. There are a lot of stages before the P3 panadaptor that conspire to increase the measurement uncertainty. Consider that before the signal even reaches the receiver it has already undergone the loss in the transmission line and the connectors. Do you know exactly how much loss you have in your transmission line and connectors? Following this, the signal then hits the receiver input which is not exactly 50 ohms. It could be 20. Or 90. Because it's not exactly 50, there is mismatch uncertainty. Already two errors right there. On the inside of the rx, there are a number of switches, cables, and bandpass filters (with amplitude ripple), then an attenuator and RF amp, mixer, and post-mixer amp. Take the attenuator for example. It might claim that its loss is -10 dB, but that's a nominal value that will actually be different for every K3. Each of the stages mentioned has an uncertainty in its gain, loss, or match which must be added to the total uncertainty. So these are all of the errors that add up to the figure I quoted at the outset. You might have better accuracy that this, but the point is you won't know if you do, so you must assume the worst case. Al W6LX __ 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 cannot be swithed ON properly.
After years of operation my K2 cannot be swithed ON properly. - Configuration: K2 (No. 3680) with KDSP2, KSB2, KNB2, KAT2, K160RX. - By switching ON the display shows Elecraft for 3 seconds and thereafter the last used frequency (28.15 MHz). - All keys and the VFO are inactive. - Current drain is 400mA (to high). - Noise of several relays during power-ON is audible. - Speaker brings (AF-gain dependend) audio for 1 second and thereafter the audio is muted. - by changing TX power, the level appears on display as normal. - Transmit is not possible. - LED on KDSP2 extinguish after 1 second (communication schould be OK) - 5 VDC and 8 VDC on the control board are OK. Has someone a good idea how to de-freeze this blocked K2 ? 73, Ueli / HB9MFK -- Jetzt kostenlos herunterladen: Internet Explorer 8 und Mozilla Firefox 3 - sicherer, schneller und einfacher! http://portal.gmx.net/de/go/atbrowser __ 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 VHf use
Maarten, There are two related but different configuration options for the situation you describe. The first option lets you use your CW paddles or key while the radio is in SSB mode. The newer option (so far in beta firmware only) adjusts the offset so that when you switch modes from SSB to CW, you do not have to retune the radio. The first one is documented in the current Owner's Manual; it is called CW-in-SSB. Quoting from the K3 Firmware Release Notes for firmware version 1.87: CW KEYING IN SSB MODES: While in SSB modes, you can now send CW without changing modes or using an offset. The other station will hear the signal at your CW pitch. This is especially useful on VHF bands when SSB signals can’t be copied. To enable this feature, go into CONFIG:CW WGHT and tap '1' until you see SSB +CW. You can also use this option for cross-mode QSOs. Interfaced logging software will record the QSO as an SSB QSO, since the radio is still in SSB mode. The second option was added in firmware beta release 3.19 and is not yet in the Owner's Manual. From the K3 Firmware Release Notes: AUTOMATIC CW VFO OFFSET ON MODE CHANGE: Allows switching quickly between SSB and CW mode without either you or the other station having to re-tune the VFO (often done on 6 meters and transverter bands). First, locate CONFIG:CW WGHT and tap '5' on the keypad until you see VFO OFS. From then on, when switching to CW mode from any other mode, the VFO will be offset by an amount equal to your sidetone pitch (as set using the PITCH switch in CW mode). If the sideband most recently used on this band is USB, the VFO will be shifted UP; if it was LSB, the VFO will be shifted DOWN. Note: If you make frequent use of this feature, you may want to use CW reverse on bands where you use USB, and CW normal on bands where you use LSB. This results in perfect pitch matching when listening to a CW signal and switching from SSB to CW. You must download and install beta release firmware 3.19 or newer to use this option; I believe it will be included in the next regular production release. 73, Rich VE3KI __ 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 Feature Idea
Once yo make this change I can see an advantage to offering a 1.5 KHz coarse tuning option for SSB mode, between the 1.0 and 2.5 currently offered. Leigh/WA5ZNU Wayne N6KR wrote: ... Suppose the VFO were tuned to, say, 7040.23, in CW mode. Further assume your CONFIG:VFO CRS menu parameter is set to 1.0 kHz (i.e., your COARSE tuning step is set to 1.0 kHz in CW mode). If you then go into COARSE mode and move the VFO up one tic, you'll get 7041.23 with present firmware. In the future you'll get 7042.00: quantized to the nearest quantum which in this case is the next even multiple of 1.0 kHz __ 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
