Re: [Elecraft] [K3] KAT3 not functioning on 6m
This thread saved me. I thought my k3 antenna tuner had malfunctioned on 6 m, but luckily it was only because it was in Split (Data mode). The erratic behavior of the ATU and the SWR are quite confusing though as they tell you nothing about this cause. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Interesting QSO
Wayne. A CW sidetone pitch of 400 Hz is consistent with what little research there is on this. A paper from 1992 stated that "All subjects improved their recognition as the frequency was lowered to 500 Hz, some even at 250 Hz." See https://la3za.blogspot.com/2013/10/studies-on-morse-code-recognition.html - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Interesting QSO
Wayne. A CW sidetone pitch of 400 Hz is consistent with what little research there is on this. A paper from 1992 says that "/All subjects improved their recognition as the frequency was lowered to 500 Hz, some even at 250 Hz./" See https://la3za.blogspot.com/2013/10/studies-on-morse-code-recognition.html - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K2 utility program
There is the AB3AP K2 Settings Retrieval Software http://udel.edu/~mm/ham/elecraft/params/ It was discussed on this list here: http://elecraft.365791.n2.nabble.com/K2-Settings-Retrieval-Software-td7599921.html - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 port sharing and FT-8
Going back to the original question, then LP_Bridge in combination with DXLabs Commander allows one to use and control both WSJT-X, a logging program, and a contest program with port sharing at the same time. I wrote it up here: http://la3za.blogspot.com/2019/06/port-sharing-for-wsjt-x.html - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] IF Output ?
I use the opportunity to follow up on this thread. The IF output of the K3 and K3S is centered on 8.215 MHz. But there is also a second IF at 12 kHz with no output. I wonder if anyone has made an output for the I- and Q- channels at 12 kHz. It looks fairly simple to find judging from the schematics. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Using a K3 to route antenna signals to external devices...
Doug, Yes, thanks, you're right. I have the preamp set up to be active for the higher bands 12, 10, and 6 m, and in the bypass position otherwise. I use this to connect an old shortwave receiver (not an SDR) to my main antenna, so I guess it doesn't hurt for it with the extra gain. But I'll try both configurations, both before and after the preamp. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Using a K3 to route antenna signals to external devices...
Thanks, Joe. Works nicely and saved me the cost of something like the MFJ-1708B-SDR SDR RF sensing T/R switch! - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Using a K3 to route antenna signals to external devices...
But what if there is a PR6-10 preamp in this path. Where should the splitter/TEE-adapter be in that case? >In brief, it takes a TEE adapter and 2 short pieces of coax. Put the >adapter between the 2 pieces of coax, and then connect one coax to ANT >OUT and the other to ANT IN. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3] AGC White Paper
Very nice report - thanks! - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-AGC-White-Paper-tp7627649p7627677.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 and WSJT-X 1.7
It seems like I get my K3 and the new 1.7 version of WSJT-X to work together if I set up the program for only Split = "Fake it", but not Mode = "Data/Pkt" (so it is set for "None"). Two of these commands seems to be too much for the timing, but one alone is fine. Joe Subich, W4TV-4 wrote > Is this when transmitting? If so, try setting Mode = "None" and > Split Operation = "None" in the WSJT-X File -> Settings -> Radio > tab. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-and-WSJT-X-1-7-tp7624923p7624950.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 and WSJT-X 1.7
Hi Joe Thanks for the explanation. It sounds like this is it as it explains why the K3's VOX has to be reengaged in order to continue transmitting. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-and-WSJT-X-1-7-tp7624923p7624934.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 Message delivered to arch...@mail-archive.com
[Elecraft] K3 and WSJT-X 1.7
On the wsjtgroup at Yahoo, there are now two of us who have a problem with the newly released version of the WSJT-X program and the audio output level/VOX for the K3. KY7M describes it as follows: "I have been transmitting perfectly in WSJT-X 1.6. As soon as I install 1.7, my transmit light goes on, but no audio goes out unless I turn off VOX and turn it on again. " I have the same symptom and I could sort of resolve it by changing the audio output level up and down on the WSJT-X program (Pwr slider). But in the end it was so annoying that I reverted back to the old version, 1.6. Does anyone understand what is going on? - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-and-WSJT-X-1-7-tp7624923.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] P3 with K2?
Hi Tom Looking forward to hearing about your results! Tom Azlin W7SUA wrote > Good question. I ordered one and will find out when I try to put it in. > I could find no instructions but have not written back to see if they > have any. > > 73, tom w7sua 73 - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/P3-with-K2-tp7620046p7620145.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] P3 with K2?
The QRP shop IF buffer amplifier looks spot on, but does anyone have any experience with it? The information is a bit sparse, but says "Small Kit do provide the K2 with a buffered IF Output. Installation with or without Noiseblanker possible. " It seems like it fits in the connector of the noise blanker - but how it does that when a noise blanker is already plugged in is not so clear from this brief description. Tom Azlin W7SUA wrote > How about this one? > > https://sage-shop.com/epages/qrp-shop.sf/en_GB/?ObjectPath=/Shops/qrp-shop/Products/Vk2zfadapterBest%C3%BCckt > > A K2 IF adapter kit from QRP shop > https://sage-shop.com/epages/qrp-shop.sf/en_GB/ > > ?? > > 73, tom w7sua - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/P3-with-K2-tp7620046p7620083.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] [K3] K3EXREF not working
I have photos of the K3's display as it is locked to an external 10 MHz reference on my blog site (as images 2 and 3). Perhaps that could be of some help in troubleshooting the K3EXREF. See http://la3za.blogspot.no/2015/10/just-good-enough-10-mhz-reference.html - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-K3EXREF-not-working-tp7616586p7616589.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] 80 Meter loop question
I've been using an 80 m horizontal loop for as long as I have had my license, about 15 years. It's a bit irregular with two supports on my house and three in trees, height is 7-12 meters. I feed it with open wire feeder to an indoor Elecraft 4:1 balun and then use the tuner of the K2 or K3 to match it to the transceiver. I've done 8-bands CW/digital DXCC, 80 - 10 m, with the loop as the work horse. My decision at the time I put it up was very much based on the simulations that L. B. Cebik, W4RNL published. His articles are kind of hard to find on the internet now, but his best ones that I have on my hard disk are: Horizontally Oriented, Horizontally Polarized Large Wire Loop Antennas My Top Five Backyard Multi-Band Wire HF Antennas Notes on All-Band Use of Horizontal-Plane Loops Horizontal Wire Loops How Big? How High? What Shape? These articles answer most questions on directional performance as well as impedance and SWR. 73 - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/80-Meter-loop-question-tp7615830p7615857.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Rerouting the KRX3 AUX Input from the Rear BNC to the KAT3
Thanks for very quick responses to my question - I'm overwhelmed! I'll remove the top cover and start right away! I have two antennas, and no special receive antenna, and the two antennas are connected to ANT1 and ANT2 all the time. If I reroute the KRX3 AUX input to the KAT3, I will be able to check out diversity - provided that the antennas in practice are well enough isolated. It's a horizontal loop and a vertical so I hope it should be fine, although the vertical is in one of the corners of the loop. 73 and thanks - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Rerouting-the-KRX3-AUX-Input-from-the-Rear-BNC-to-the-KAT3-tp7615802p7615807.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 Message delivered to arch...@mail-archive.com
[Elecraft] Rerouting the KRX3 AUX Input from the Rear BNC to the KAT3
When I built my K3 some years ago I routed the second receiver's AUX antenna input to the rear panel BNC connector. But now I have changed my mind and want to route it through the KAT3 instead, in order to try diversity reception. How complex is this to accomplish? I know I need to plug in another 30 cm tmp cable to the KRX3 board than the one I am using now. But how many panels do I need to remove from the K3? The top I'm sure I need to remove, but is that enough? - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Rerouting-the-KRX3-AUX-Input-from-the-Rear-BNC-to-the-KAT3-tp7615802.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] latest K2 serial #?
OK, Don - no problem with that :-)So the effect is most striking and easiest to do on the old A level board, but it is doable and has a positive effect even on the B level (i.e. the present) K2 board as Bill W4ZV testified to in his response in this thread also. Don Wilhelm-4 wrote > Sverre.I beg to differ slightly. The B level boards already have the 82mH > inductor across the same R-PAK that the TF3MA mod wants to install the > large capacitor. In addition, the 47k resistor is already in place, but > the path must be broken to install his 47mH inductor.While it is do-able > on the B level board, it is not as straightforward as for the A level > board. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/latest-K2-serial-tp7615395p7615494.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] latest K2 serial #?
The TF3MA sidetone mod is still current as it is in fact a modification of the B level board, not just the A level board, as the site states that this is an improvement of exactly the 47k / 82 mH A to B improvement mentioned in the quote below. See http://www.raunvis.hi.is/~matti/TF3MA/sidetone_tf3ma.html See also my mod list here: http://la3za.blogspot.no/p/la3za-unofficial-guide-to-elecraft-k2_28.html (search for sidetone), where I specify it as : "Even more sinusoidal tone than the mod in serial #3000+ gives" Don Wilhelm-4 wrote > Yes, those two mods are old, and apply only to the A level boards (below > SN 3000). > There have been improvements in the K2 sidetone incorporated into the B > level boards, and are also included with the A to B mod kit. > The changes added a 47k resistor in series with C24 (R11 for the B level > boards) and a shielded 82mH inductor across pins 7 and 10 of RP5. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/latest-K2-serial-tp7615395p7615491.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 Message delivered to arch...@mail-archive.com
[Elecraft] Someone took a fancy in our K3 and left their teeth marks
See http://la3za.blogspot.no/2016/02/teeth-marks-in-k3.html - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Someone-took-a-fancy-in-our-K3-and-left-their-teeth-marks-tp7614701.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] LDEs (Long-Delayed Echos)
An 80m or 160m signal echo after about 1/7 second may seem like a round-the-world echo. But it is more likely that it is a ducted signal in the magnetosphere. The actual delay varies with geomagnetic latitude, and the further south one is the closer the delay time is to 1/7 second. Such signals can be trapped in occasionally occurring, tubular magnetospheric ducts, which stretch from the northern to the southern hemispheres along the Earth's magnetic-field lines. I wrote about it in QST in 2009 - http://folk.uio.no/sverre/papers/2009_MagnetoDucting-QST-LA3ZA.pdf. There was also an excellent article about it in Radcom by P. Martinez (G3PLX), "Long Delayed Echoes, A Study of Magnetospheric Duct Echoes 1997-2007," Radcom, Oct 2007, pp. 60-63 (not on the web to my knowledge). I have an analysis of several such medium delayed echoes or magnetospherically delayed echoes (MDE), including that of G3PLX, here: http://la3za.blogspot.no/2010/03/magnetospherically-ducted-echo.html The echo time can be predicted from latitude, so if I get more data, I can run my program to estimate the delay time for a given place at a certain time (geomagnetic latitude rel to geographic latitude varies with time). - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/LDEs-Long-Delayed-Echos-tp7610884p7610886.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] What are your favorite K3 and KX3 macros?
The K3 macro I use the most is "Speakers on/off" for whenever I want to use headphones. See macro 3 here: http://la3za.blogspot.no/2013/12/clever-k3-macro-trick.html - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/What-are-your-favorite-K3-and-KX3-macros-tp7610267p7610303.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K2 Question: Is the DSP Board a Worthwhile upgrade?
I would not have upgraded to the KDSP2. Not for the performance, because although I'm mainly a CW operator, I could probably benefit from it. My main objection to the KDSP2 is user interface. The K2 was not designed for the KDSP2 in the first place as can be seen in how complicated it is to set up and operate compared to the other K2 modules. Given the few buttons of the K2, the user interface for the KDSP2 is probably as good as it can be, but still it is so much harder to use than the other options. The otherwise well thought-out user interface of the K2 is made unncessary complicated by the KDSP2 with all its features. This can be read indirectly from the history of Elecraft here: http://udel.edu/~mm/ham/elecraft/history/ Quote: "A major milestone in our history was the KDSP2 option for the K2. Lyle Johnson, KK7P, became known to us *after* he had mostly completed this highly versatile DSP unit. He reverse-engineered the auxBus protocol and made the KDSP2 behave as if it were a KAF2, which plugged into the same spot. He showed it to us, and we immediately adopted both the product and Lyle himself." - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Question-Is-the-DSP-Board-a-Worthwhile-upgrade-tp7609953p7609972.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] (K3) filter setting shifts panadapter display
That should be *too high*, not too low. Sverre Holm (LA3ZA) wrote > I consistently get the P3's center frequency to be too low - in this > example about 45 Hz too low. See screen capture here: > > http://folk.uio.no/sverre/LA3ZA/Offset-P3-K3-400HzXFIL-LA3ZA.jpg - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-filter-setting-shifts-panadapter-display-tp7608675p7608679.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] (K3) filter setting shifts panadapter display
I'm seeing something similar, but I'm not sure if it's the same effect or something related. Using 400 Hz bandwidth and a 400 Hz roofing filter, and using Auto to zero-beat a CW signal, I consistently get the P3's center frequency to be too low - in this example about 45 Hz too low. See screen capture here: http://folk.uio.no/sverre/LA3ZA/Offset-P3-K3-400HzXFIL-LA3ZA.jpg RobertG wrote > On CW, using the K3 CWT to center a signal, the pan display frequency > for the signal shifts around as follows: - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-filter-setting-shifts-panadapter-display-tp7608675p7608678.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] (K3) filter setting shifts panadapter display
I just learned from an offline email that this can be fixed using the Cal function in the P3 (preferreably after 1 hr warm-up) - and indeed that was the case! Thanks to Bill, NR4C. Sverre Holm (LA3ZA) wrote > That should be * > too high * > , not too low. > Sverre Holm (LA3ZA) wrote >> I consistently get the P3's center frequency to be too low - in this >> example about 45 Hz too low. See screen capture here: >> >> http://folk.uio.no/sverre/LA3ZA/Offset-P3-K3-400HzXFIL-LA3ZA.jpg - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-filter-setting-shifts-panadapter-display-tp7608675p7608702.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Cheap ref osc to lock K3
My experience is that the simple GPS-based 10 MHz reference works well with the K3. The K3 is quoted as measuring frequency to 1 Hz accuracy, implying a measurement time of the order of 1 second. That seems to be enough to smooth out the jitter from the Neo-7M. Of course, there are better solutions around, but why spend money on something which is unnecessary? My experience including build instructions was posted on my blog yesterday: http://la3za.blogspot.no/2015/10/just-good-enough-10-mhz-reference.html vk2rq wrote > I bought a module like that. If you set the output frequency to something > that divides evenly into 48MHz, then the output is quite stable. > Otherwise, if you set it to something else like 10MHz, the jitter is quite > obvious on the scope. It is fine for jobs like calibrating a frequency > counter or zero-beating a transceiver. You'd probably want to smooth out > the jitter though if you want to use it for a K3 reference oscillator. > 73, Matt VK2RQ - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Cheap-ref-osc-to-lock-K3-tp7608667p7608700.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 Message delivered to arch...@mail-archive.com
[Elecraft] Just good enough 10 MHz reference
I have now posted a full description of my just good enough 10 MHz reference based on the Ublox Neo-7M 12-13 USD GPS on my blog: http://la3za.blogspot.com/2015/10/just-good-enough-10-mhz-reference.html?spref=tw It has photos and schematics and shows how it affects the K3's reference oscillator from initial start-up until it's warm. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Just-good-enough-10-MHz-reference-tp7608672.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 Digital Voice Mode - our future?
The country you may be referring to is Norway, where it has been decided to switch off all the biggest broadcasters from FM (88-108 MHz) in 2017 as the first country in the world, http://www.bbc.com/news/technology-32380222 It has been a controversial decision, I for one have critized the audio coding used for sacrificing audio quality in an Audio Engineering Society presentation in 2007 "Audio Quality on the Air in DAB Digital Radio in Norway" http://heim.ifi.uio.no/~sverre/papers/07_AES-DAB-Corrected.pdf But I cannot quite see the relevance for VHF FM for hams. ae4pb wrote > I'm wondering since Digital voice is replacing FM around the world how > hard > it would be to add another mode to the K3S? I'm not even sure what the > standards are but one country just set the date to get rid of FM > permanently > and switch to DV. > > Jerry Moore > AE4PB, K3S - S.N. 10324 - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Digital-Voice-Mode-our-future-tp7607903p7607943.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 Digital Voice Mode - our future?
- Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Digital-Voice-Mode-our-future-tp7607903p7608026.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Frequency reference for the K3 directly off a GPS
I have done some more experimenting now with my poor man's 10 MHz reference. The ublox Neo-7 GPS is a lousy frequency reference in most respects, except that it is accurate in keeping exactly 10 million periods per second. My experience is that the K3 has enough internal averaging to deal with that. Using a ublox Neo-7 (USD 12 on Ebay) and a 74HC04 as a driver to feed the 10 MHz to the 50 ohm input of the K3EXREF the K3 accepts the input and I see the star in REF*CAL blinking. The reference frequency now starts at 49,379,680 and stabilizes to 49,279,650 after some 15-20 minutes. My initial setting for the reference was 49,379,640 which I determined manually when the K3 was new in 2009 or so. I am going to write this up on my blog with schematics eventually. Sverre Holm (LA3ZA) wrote > Some recent GPS modules (ublox Neo 7) have a programmable output that in > addition to the 1 pps output can be programmed even to output 10 MHz. This > output has a lot of jitter as it seems to be derived from a 48 MHz clock > which is divided down in such a way as to generate a mix of short and long > cycles but so that the average frequency is maintained accurately at 10 > MHz. > > A description can be found here > https://sites.google.com/site/g4zfqradio/u-blox_neo-6-7 and performance is > partly described here: > https://www.febo.com/pipermail/time-nuts/2014-August/086257.html > > My question is regarding the K3 external reference input. Is this source > good enough to drive the K3 reference? Can the K3 clean up the jitter > internally, or does the K3 require a source with much less phase noise? - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Frequency-reference-for-the-K3-directly-off-a-GPS-tp7606275p7607984.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Frequency reference for the K3 directly off a GPS
I've got some questions about the type of GPS module I'm using. It is a ublox NEO-7M. The nice feature of this unit is that it has a programmable output which nominally excites an LED at 1 pulse per second, but which also can be programmed to 10 MHz. That output is not connected, so one needs to make a connection to it oneself. Sverre Holm (LA3ZA) wrote > I have done some more experimenting now with my poor man's 10 MHz > reference. The ublox Neo-7 GPS is a lousy frequency reference in most > respects, except that it is accurate in keeping exactly 10 million periods > per second. My experience is that the K3 has enough internal averaging to > deal with that. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Frequency-reference-for-the-K3-directly-off-a-GPS-tp7606275p7607989.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Elecraft SP3 External Speaker details
Pictures of SP3 can be found on Elecraft's Twitter account: https://twitter.com/elecraft/status/642473404080091136 - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Elecraft-SP3-External-Speaker-tp7607455p7607465.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 Aux RF mod for Rx out (No Sub-Rx)
I'm using a feed off the KXV3A's Rx in and Rx out ports, as you say, to feed a shortwave receiver. It's very simple with no splitter, just a BNC Tee connector. The K3 needs to be switched to a band which is higher than the external receiver for it to work as RF is routed through the K3's output filters. Also the K3 needs to enable the Rx ant. The shortwave receiver should be protected from the K3's transmitter with this scheme, at least my receiver has not suffered any damage. Don Wilhelm-4 wrote If you want to share the antenna, then the splitter is a solution - what about protection for your SDR receiver when the K3 is transmitting? On 8/24/2015 2:18 PM, Russ wrote: I would like to split my K3's Rx feed to also feed my new SDRPlay SDR. One way is to put a splitter (I'd use a mini-circuits ZFSC-2-1W+ or similar) between the KXV3A's Rx In and Rx out ports and suffer the 3 dB loss (which should be insignificant since my ambient noise is far above the K3's Rx noise floor. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Aux-RF-mod-for-Rx-out-No-Sub-Rx-tp7606708p7606736.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 Message delivered to arch...@mail-archive.com
[Elecraft] Frequency reference for the K3 directly off a GPS
Some recent GPS modules (ublox Neo 7) have a programmable output that in addition to the 1 pps output can be programmed even to output 10 MHz. This output has a lot of jitter as it seems to be derived from a 48 MHz clock which is divided down in such a way as to generate a mix of short and long cycles but so that the average frequency is maintained accurately at 10 MHz. A description can be found here https://sites.google.com/site/g4zfqradio/u-blox_neo-6-7 and performance is partly described here: https://www.febo.com/pipermail/time-nuts/2014-August/086257.html My question is regarding the K3 external reference input. Is this source good enough to drive the K3 reference? Can the K3 clean up the jitter internally, or does the K3 require a source with much less phase noise? - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Frequency-reference-for-the-K3-directly-off-a-GPS-tp7606275.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Frequency reference for the K3 directly off a GPS
I am aware that a GPSDO etc is fine. But is it overkill for the K3? What I am trying to determine is the minimum requirement for the oscillator that will drive the K3's external reference input. The documentation says that the K3's phase stability is not affected by the external reference. That, too me, sounds as if there is some internal averaging or whatever in place already. Matt Zilmer-3 wrote You're probably better off with A GPSDO or a Rubidium source. Even a plain OCXO would work if you can keep it calibrated. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Frequency-reference-for-the-K3-directly-off-a-GPS-tp7606275p7606283.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 Message delivered to arch...@mail-archive.com
[Elecraft] Removal of small K3 knobs
I'm about to replace one of the small encoders on my K3 (as per these instructions http://www.n5na.net/s9y/index.php?/archives/26-Replacing-Elecraft-K3-Push-Button-Encoders.html), but I have a hard time removing the four knobs for shift/low, hi/width, speed/mic, and cmp/pwr. Is there a way to get them off their axes without either scratching the front panel or breaking the knobs? All tips and tricks are appreciated! - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Removal-of-small-K3-knobs-tp7606184.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Removal of small K3 knobs
I finally made it by just persistently nudging and pulling them. In the end they came off all four of them without any damage neither to the knobs nor the front panel. Sverre Holm (LA3ZA) wrote Is there a way to get them off their axes without either scratching the front panel or breaking the knobs? - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Removal-of-small-K3-knobs-tp7606184p7606185.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Does the K3S DSP support LMS noise reduction ?
The K3 and thus presumably the K3S implements one particular form of the Least Mean Squares algorithm called the Leaky LMS, see Lyle's response some years ago: http://elecraft.365791.n2.nabble.com/K3-NR-td1557606.html#a1557836 That's an adaptive version of a Wiener filter that doesn't get so easily 'stuck' in a non-optimal solution if signal statistics should change drastically. Instead the non-optimal solution 'leaks' out of the filter. The Wiener filter by itself is a fixed signal-to-noise optimizing filter, and thus is fundamentally different from low pass, high pass etc in that the filter's coefficients depend on the input signal. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Does-the-K3S-DSP-support-LMS-noise-reduction-tp7605863p7606068.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K2 rework eliminators - mic board
It is also quite easy to make a reconfigurable microphone header yourself for the K2. Go to http://la3za.blogspot.no/p/la3za-unofficial-guide-to-elecraft-k2_28.html#KSB2 and search for 'microphone header' for ideas. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-rework-eliminators-mic-board-tp7605345p7605362.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 Message delivered to arch...@mail-archive.com
[Elecraft] K3: Shifted audio image (L-MIX-R)
Is it only my K3 that has this imaging problem with the audio? I have my L-MIX-R set to A Ab meaning that the main receiver's audio should be centered in the headphones. That works fine when the sub-receiver is on, but as soon as I turn it off, the audio drifts to the left. There is still audio in the right-hand ear, but the image has clearly shifted to the left. This is the case both for the CW and USB modes. It didn't use to be like this, so I think it must have crept in with the latest firmware updates: MCU 5.14, FPF 1.19, DSP1 and DSP2 2.83 - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Shifted-audio-image-L-MIX-R-tp7603581.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3: Shifted audio image (L-MIX-R)
Yes, my AFX was accidentally turned on. Thanks to Gary and Guy. Now the CQ WPX contest is going to be much more gentle on my ears! 73 - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Shifted-audio-image-L-MIX-R-tp7603581p7603584.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Elecraft] K3 K144XV spurious signal on 144,414.1
Of course, the XV144 is the external transverter. What I had in mind were those who already have the K144XV and who find all these false carriers so annyoing that they are tempted to go to such a drastic measure as to move the transverter to the outside. Joe Subich, W4TV-4 wrote But can the K144XV either be better shielded in its internal mounting, or perhaps be moved external to the K3 in a separate shielded enclosure? The external transverter (in a separate, shielded enclosure) is the XV144 ... 73, ... Joe, W4TV - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Elecraft-K3-K144XV-spurious-signal-on-144-414-1-tp7601567p7601758.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 K144XV spurious signal on 144,414.1
Good to hear that others are hearing it as well, so then it is for sure nothing that radiates in our shack. I've heard of two now, at 144,411.09 MHz and 144,414.8 MHz respectively. What we found at our club station's K3 was: - it cannot be heard on the 28 MHz band which is where the 2m band is downmixed to, on 28,414.1 in our case - the signal goes through the first mixer as its pitch will change (a lot) if the 116 MHz crystal in the K144XV is subjected to a coolant spray - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-K144XV-spurious-signal-on-144-414-1-tp7601496p7601498.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K2 Settings Retrieval Software
Hi Mike The K2 program compiles fine locally on my Windows 7 PC and runs without security warnings now. Thanks! -- If you reply to this email, your message will be added to the discussion below: http://elecraft.365791.n2.nabble.com/K2-Settings-Retrieval-Software-tp7599921p753.html To unsubscribe from K2 Settings Retrieval Software, click here http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_codenode=7599921code=TEEzWkFAbnJybC5ub3w3NTk5OTIxfDE5MzEwNzE4Nzg= . NAML http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=macro_viewerid=instant_html%21nabble%3Aemail.namlbase=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespacebreadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Settings-Retrieval-Software-tp7599921p7600053.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K2 Settings Retrieval Software
Hi Don Yes, you are right. So the software should only be used right before/after adjustment and then the cable should be removed. Indeed the K2/100 I just had here had the cable plugged in, but that was not because of this software. I think it was just because the previous owner didn't know better. I removed it before shipping it on to the present owner. 73 Sverre LA3ZA 2015-03-09 12:56 GMT+01:00 Don Wilhelm-4 [via Elecraft] ml-node+s365791n7599986...@n2.nabble.com: With this software, there is an increased temptation to leave the internal counter probe connected inside the K2. While that is OK for the K2/10, for the K2/100 the probe should not be left plugged in because it can couple BFO harmonics into the KPA100 resulting in spurious emissions. Elecraft recommends that the internal counter probe be removed if the KPA100 is installed. See the KPA100 manual page 55. 73, Don W3FPR On 3/9/2015 3:18 AM, Ken Chandler wrote: Didn't realise it existed! Will certainly be sorting the software today for my K2/100. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] http:///user/SendEmail.jtp?type=nodenode=7599986i=0 This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] http:///user/SendEmail.jtp?type=nodenode=7599986i=1 -- If you reply to this email, your message will be added to the discussion below: http://elecraft.365791.n2.nabble.com/K2-Settings-Retrieval-Software-tp7599921p7599986.html To unsubscribe from K2 Settings Retrieval Software, click here http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_codenode=7599921code=TEEzWkFAbnJybC5ub3w3NTk5OTIxfDE5MzEwNzE4Nzg= . NAML http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=macro_viewerid=instant_html%21nabble%3Aemail.namlbase=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespacebreadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Settings-Retrieval-Software-tp7599921p7599989.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K2 Settings Retrieval Software
Hi Mike Good to hear from you. I don't really know what it takes to make the programs more useful. All I know is that everything that has to do with Java has gotten more and more difficult to use, especially for Windows users. I am running Windows 7 here myself. Therefore, after quite some struggle with browsers and security, it was a relief to find out that I could run the K2 Settings Retrieval Software from the command line in Windows by just typing in javaws params.jnlp after having downloaded params.jnlp to my harddisk. I realize that the security issues are caused by calls to your website. If a 100% local program could do the same, then perhaps that would make it simpler, but I am just a user, not a developer of these things, so I don't really know what it takes. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Settings-Retrieval-Software-tp7599921p7599958.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 Message delivered to arch...@mail-archive.com
[Elecraft] K2 Settings Retrieval Software
I just wanted to remind the list of the AB3AP software found on http://udel.edu/~mm/ham/elecraft/ I'm especially fond of the software for K2 Settings Retrieval about which he says Save your K2 set up in case of an unexpected reset. I have just serviced a K2 where the previous owner had had soldering problems (untinned toroids, solder bridges, ...) as well as settings which were far off. I find it useful then to start by reading out the settings to figure out what the starting point is, as well as backing up all the values when the calibration has been completed. The AB3AP software is in the form of Java programs. My web browsers don't allow them to be run, but simply downloading the code and running them from the command line works fine. For a PC this is javaws params.jnlp. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Settings-Retrieval-Software-tp7599921.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] CW listening pitch
There is evidence that it is advantageous with a low tone for the pitch (asuming normal hearing). Some studies give evidence for an improvement in recognition rate as the pitch is lowered and it more or less seems to level off at 500 Hz, except for the lowest SNRs where recognition even improves at a pitch of 250 Hz. Some of the research is summarized here (look for paper 2): http://la3za.blogspot.no/2013/10/studies-on-morse-code-recognition.html - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/CW-listening-pitch-tp7599535p7599630.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 Message delivered to arch...@mail-archive.com
[Elecraft] Nifty manual for K2
I cannot find the K2 manual any longer on http://www.niftyaccessories.com/Elecraft_RefGuide.htm I really like these manuals and was about to recommend it for a K2 owner when I noticed that it was no longer there. Have they been discontinued? - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Nifty-manual-for-K2-tp7599520.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K2 gettin' old.....
My K2 is also old now - 14 years I believe - and I don't use it that often any longer. I notice that the pushbuttons need some exercising before they work now. For instance no 7 and 8 (where I have CW stored for LA3ZA and 5nn - yes, I'm a lazy CW operator!). Is there any cure for this - other than to replace them or use them more often? - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-gettin-old-tp7598132p7598154.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Getting Started With CW
I couldn't agree more. I'm glad I finally discovered the single-lever paddle after more than ten years of struggling with iambic. It is so much easier to use the single-lever and it is much more forgiving for small timing errors. I wrote about it on my blog some time ago: http://la3za.blogspot.no/2013/06/the-advantage-of-single-lever-paddle.html After that I got the tiny Palm single-lever paddle. Barry K3NDM wrote Tom, As a beginner, don't get hung up on iambic. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-CW-decoder-and-CQ-CW-contest-tp7595261p7595290.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 External Frequency Reference Questions
Thanks David, David G4DMP wrote No, Sverre, I did not need an adjustable 5V control voltage as the MV89A was spot on 10,000,000.00 Hz - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-External-Frequency-Reference-Questions-tp7593192p7593240.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 External Frequency Reference Questions
I wonder what's the experience with the MV89A, does it need a lot of adjustment of the control voltage, or does it have this kind of accuracy out of the box? David G4DMP wrote but recently got a 10MHz MV89 double oven CXO which is inexpensive and excellent. Mine is accurate to the nearest one-hundredth of a Hertz at 10MHz, which is near enough for me ;-) Search eBay for MV89 and MV89A. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-External-Frequency-Reference-Questions-tp7593192p7593225.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 Message delivered to arch...@mail-archive.com
[Elecraft] Double Oven OCXO
Thanks to David, G4DMP and Ed, KL7UW for valuable information. Now, shall I press BUY on Ebay for the Morion MV89a or not - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Synchronized-and-stable-GPS-phase-lock-for-KX3-K3-and-XV-transverters-tp7592394p7592493.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Synchronized and stable GPS phase lock for KX3, K3 and XV transverters
A question regarding the DOCXO, double ovenized crystal oscillator to Chuck, W7CS. I'm completely new to this, but after having looked at a few in ebay, I see that they have an input for frequency control. Do you use them as is, or do you calibrate them by setting the control voltage? And how much variation in frequency is typical to achieve with this control voltage, ie how much off frequency can they be if unadjusted? Thanks, - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Re-Synchronized-and-stable-GPS-phase-lock-for-KX3-K3-and-XV-transverters-tp7592455p7592461.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 Message delivered to arch...@mail-archive.com
[Elecraft] K2 KPA100 fan replacement?
Prompted by the recent thread on K3 fan replacement in order to make it more quiet, I wonder if anyone has done anything similar on the KPA100? - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-KPA100-fan-replacement-tp7592462.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Auto Notch Revisited
In the context of the LMS filter for FIR notch filtering and noise cancellation, one common way to find the reference is by a simple delay of the input signal. If the purpose is to separate voice from a sinusoid, then one utilizes the fact that a sinusoid has a long correlation function in time compared to voice. If the delay is longer than usual correlation time for voice, one will get a reference for the desired signal - at least in the correlation domain which is what counts here. For a noise reduction filter, the delay is often shorter, as noise has short correlation time compared to a voiced signal. David Woolley (E.L) wrote The problem with it in the context of this thread is that it needs a value for d(n). Although d(n) is confusingly defined in the actual article, I believe it represents the correct (desired) output of the filter. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Auto-Notch-Revisited-tp7591810p7591896.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Bluetooth Connection to K2
There's a couple of ways to use Bluetooth with the K2 on my list of mods (internal/external), and there are more on the mailing list. Some of them are some years old, so maybe some better ways are possible today? See http://la3za.blogspot.no/p/la3za-unofficial-guide-to-elecraft-k2_28.html#IO http://la3za.blogspot.no/p/la3za-unofficial-guide-to-elecraft-k2_28.html#IO - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Bluetooth-Connection-to-K2-tp7590841p7590851.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] New k2 ghostlight mod!
Cool looks, I like that! - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/New-k2-ghostlight-mod-tp7589545p7589557.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] New k2 ghostlight mod!
Here are the YouTube links to the ghostlight mod of John, WT5Y: - K2 Backlight in Action http://www.youtube.com/watch?v=i3VJ4fSA2_Q - K2 Backlight Details http://www.youtube.com/watch?v=AVWBGMMmT_A - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/New-k2-ghostlight-mod-tp7589545p7589563.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 Message delivered to arch...@mail-archive.com
[Elecraft] 4 MHz oscillator is too high in frequency (K2)
My aging K2 (#2198) has developed a curious symptom in that the 4 MHz oscillator cannot be adjusted lower than about 4,000,000.55 kHz. It has probably been like this for a while and my BFO settings have probably been done with the incorrect reference. I discovered it by observing that the indicated frequency was about 0.75 kHz off. Questions to the group: 1. Has anybody experienced anything like this, and can it be blamed on aging of e.g. the crystal or on some of the capacitors in the circuit? (BTW I have the KI6WX mod of the oscillator circuit http://mailman.qth.net/pipermail/elecraft/2003-August/022687.html which has worked well before) 2. How can I do a quick fix? e.g. by reinstalling C21=33 pF instead of the 10 pF of the mod above - or some other idea for a fix? 73 Sverre - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/4-MHz-oscillator-is-too-high-in-frequency-K2-tp7587585.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] 4 MHz oscillator is too high in frequency (K2)
Sverre Holm (LA3ZA) wrote My aging K2 (#2198) has developed a curious symptom in that the 4 MHz oscillator cannot be adjusted lower than about 4,000,000.55 kHz. This should be 550 Hz too high, that must be 4,000.55 kHz (I think!) - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/4-MHz-oscillator-is-too-high-in-frequency-K2-tp7587585p7587590.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] 4 MHz oscillator is too high in frequency (K2)
Hi Don, Thanks - heating up the soldering iron now! - Sverre - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/4-MHz-oscillator-is-too-high-in-frequency-K2-tp7587585p7587598.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] How to outfit a K3 for JT65HF or JT9
Larry Lopez wrote So you need a linear phase filter. Is the DSP filter linear phase ? I teach DSP and filters at the University of Oslo. Of the two DSP filter types, FIR (Finite Impulse Response) and IIR (Infinite Impulse Response), only an FIR filter can be designed to have exact linear phase and constant group delay. But an FIR filter can also have a non-linear phase, but that is the exception. Therefore I assume that the K3's FIR filter is linear phase (I couldn't find this mentioned in the manual). If you really need the presumably linear phase response of the FIR filter, then that requires that the DSP filter is much narrower than the roofing filter (crystal filter) so that the DSP filter is the main contributor to the passband and transition band responses. This is however not the usual way to run JT9 and JT65, but rather that the filters in the decoder software running in the PC provide the narrow bandwidth. I believe they are FFT-based filter banks which is also a kind of FIR filter with linear phase. The K3 manual has this to say on the DSP filters and how to select: Narrow DSP Filter Types For bandwidth settings of 100 Hz or lower, the K3’s DSP normally uses a type of filter that minimizes ringing: the Finite Impulse Response or FIR filter. If you’d like steeper filter skirts, and don’t mind a small amount of ringing, you can select Infinite Impulse Response” or IIR filters for these bandwidths. Locate CONFIG:FLx BW menu entry, then tap 7 until you see IIR ON. Both main and sub receivers will use the same setting. IIR filters take longer to change from one bandwidth to another, so you may hear audio artifacts when adjusting the DSP controls. If this is objectionable, use the default FIR filters. 73 Sverre - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/How-to-outfit-a-K3-for-JT65HF-or-JT9-tp7587584p7587641.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Quick Question
David Cole wrote Does the K3 have a CW keyer memory? IE., can I program up a CQ TEST, in one memory, then the 599 00X in the other? The way the second part of the question is phrased it looks as if you are asking if there is a memory that increments a counter per QSO, i.e. 599 001, 599 002, and so on. the K3 has indeed CW memories as others have said, but they are static so the contents doesn't increment, at least not as far as I know. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Quick-Question-tp7586750p7586759.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Missed a great P3 Screen Shot
Dave Hachadorian-2 wrote I was on 10 Meters Saturday, when the X1 solar flare struck at 1748Z. That must have been really fascinating - wish it were me. But like you I would would probably also have forgotten to take a copy! __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@.qth This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to lists+1215531472858-365791@.nabble - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Missed-a-great-P3-Screen-Shot-tp7586237p7586336.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Distortion
Hi Hans You seem to have a known problem - with a known fix: Weird behavior around 7185 kHz. It is due to interaction between the VFO and the PLL reference oscillator. Search for '7185' in my list http://la3za.blogspot.no/p/la3za-unofficial-guide-to-elecraft-k2_5502.html http://la3za.blogspot.no/p/la3za-unofficial-guide-to-elecraft-k2_5502.html and you will find some links that will help you. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Distortion-tp7586001p7586004.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Distortion
Phil Wheeler-2 wrote Nice list you have, Sverre. Thanks! Since August last year I have updated the list (link in my signature field) and added several photos to make it easier to navigate. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Distortion-tp7586001p7586007.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 Message delivered to arch...@mail-archive.com
[Elecraft] PA with predistortion
Apache Labs become the first Amateur Transceiver manufacturer to include Pre-distortion technology within their PA’s for ultra-clean TX. This is something that Elecraft should have all the possibilities to follow up on: using the DSP to clean up the PA. See http://blog.wsplc.com/?p=1701 http://blog.wsplc.com/?p=1701 - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/PA-with-predistortion-tp7584706.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] Storing Macros in K3
I just wrote about storing macros for the PF1 and PF2 buttons on my blog, so perhaps you will find it useful. There's a description there on how a button can reprogram itself to toggle Split and related settings on/off . See Clever K3 macro trick http://la3za.blogspot.no/2013/12/clever-k3-macro-trick.html - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Storing-Macros-in-K3-tp7582608p7582624.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] K2 Signal to Noise on 160m ?
You don't give so much information here about how you did the sidetone pitch adjustment, but it is easy to mess up things if you do that without adjusting filters also. See item 3 in the list of 'Elecraft K2 do's and don'ts' http://la3za.blogspot.no/2011/09/elecraft-k2-dos-and-donts.html Jimithy66 wrote This a used K2 and I adjusted the STP (Sidetone Pitch) to my liking and wonder if that messed something up or is the K2 noisy on 160m ? - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Signal-to-Noise-on-160m-tp7581113p7581127.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] K2 Low Power on 12 and 10 Meters
Larry, Take a look at http://la3za.blogspot.no/p/la3za-unofficial-guide-to-elecraft-k2_28.html#K2-tweak - second item - which talks about various tricks to do with the T2 and T1 transformers. Lifting T2 helped me. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Low-Power-on-12-and-10-Meters-tp7580925p7580932.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] CW Pitch Resolution
There is a study from 1992 that tested recognition rate vs pitch frequency. Unfortunately only a few tones were tested, but at least one can infer that a low tone is preferrable. This is in Montnemery, Peter, Bengt Almqvist, and Sten Harris. Recognition of telegraphy signs at different listening levels and frequencies. Scandinavian Audiology 21.4 (1992): 255-260. The abstract is: The recognition of telegraphy masked by noise at 40 and 80 signs/min telegraphy speed was studied in 10 normal-hearing subjects at different sound pressure levels (25–85 dB SPL in steps of 5 dB) as well as at different test frequencies (2000, 1000, 800, 630, 500 and 250 Hz). The ability to recognize the signs varied with varying SPL. Recognition for most of the subjects was best at an SPL close to 70 dB. All subjects improved their recognition as the frequency was lowered to 500 Hz, some even at 250 Hz. These facts should be taken into consideration when training telegraphy operators as well as in the construction of radio receivers to permit listening at low frequencies. Furthermore, the critical ratio was calculated at the different test frequencies. Read More: http://informahealthcare.com/doi/abs/10.3109/01050399209046009; Based on this result, it would be interesting to zoom in on the frequencies between 250 and 500 Hz for further testing, also higher speeds would be interesting to test as 40 and 80 is the same as 8 and 16 wpm. Peter Montnemery is by the way SM7CMY. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/CW-Pitch-Resolution-tp7579837p7580032.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] CW Pitch Resolution
To sum up the interesting studies from the early 90's on Morse code recognition and the effects of pitch frequency, signal to noise ratio and code speed I posted the abstracts of some of the Montnemery papers on my blog as well as some key illustrations. See http://la3za.blogspot.no/2013/10/studies-on-morse-code-recognition.html - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/CW-Pitch-Resolution-tp7579837p7580048.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] K2
There is an improved keying circuit which can be found here http://la3za.blogspot.co.uk/p/la3za-unofficial-guide-to-elecraft-k2_28.html http://la3za.blogspot.co.uk/p/la3za-unofficial-guide-to-elecraft-k2_28.html by searching for WA5PB/N0SS. It was offered as a kit, but isn't any longer since N0SS is SK. Vic K2VCO-2 wrote Here is a circuit for an amp key circuit that can be added to the K2: lt;http://www.elecraft.com/Apps/Amp_keying_ckt.htmgt; - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-tp7579507p7579541.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] KXPD3 and single-lever paddles
You're welcome, Dennis - bare hyggelig! (Your last name sounds to me as if you are among that approximate half of people of Norwegian descent that live in the US rather than in Norway, and thus perhaps would understand some Norwegian.) Dennis L. Haarsager wrote Recently LA3ZA posted here and included a link to his excellent blog. There I found an article on single-lever paddles and their use by many high speed operators (tusen takk, Sverre). http://la3za.blogspot.com/2013/06/the-advantage-of-single-lever-paddle.html - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/KXPD3-and-single-lever-paddles-tp7579364p7579384.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] P3 Feature Request - Transmit sampling
As your post indicates, the splattering of JT65 signals has most likely nothing to do with your transmitter and setup. It is more likely to be due to the specifics of the JT65 display/decoding algorithm than anything else. I have done spectral estimation for some 30+ years and it reminds me very much of the phenomenon called sidelobe leakage. I have commented on that in my blog: Overmodulated JT65 on HF? http://la3za.blogspot.no/2013/04/overmodulated-jt65-on-hf.html WB4SON wrote Yesterday I received an email from a ham a few thousand miles away asking me to clean up my signal -- I was running JT65 at the time, and he saw my signal decode on his rig in a half-dozen spots across the waterfall. Later that night a nearby ham was nice enough to run a spectral analysis on my signal and found it looked clean as well. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/P3-Feature-Request-Transmit-sampling-tp7579177p7579228.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] Simplest ever mod for K2
I did this mod, and I recommend it, it really makes a difference for hardly any effort. It is by the way the first mod for the K2 for years! It has been added to the updated LA3ZA list of modifications: http://la3za.blogspot.no/p/la3za-unofficial-guide-to-elecraft-k2_28.html#K2-misc http://la3za.blogspot.no/p/la3za-unofficial-guide-to-elecraft-k2_28.html#K2-misc George Blahun Jr wrote This is such a simple and quick mod I have resisted posting it, but I do feel it makes a small, not totally aesthetic difference. As an amateur astronomer, I always blacken the edges of eyepieces and objective lenses to enhance contrast. I did the same thing on the K2 bezel and I believe it does enhances contrast (at least during the day with high ambient light levels) and improves the appearance of the bezel by eliminating the hazy edge around the clear plastic. Just take a magic marker and carefully run it along the edge of the bezel (after removing it from the radio). Let each length and width dry before continuing to the next portion. It's literally a 5 minute job. George KS1U - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Simplest-ever-mod-for-K2-tp7577654p7577666.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] Modern battery for K2
I wonder what resulted from this. I looked at it also and found that although this high-capacity battery probably fits physically, it may not be a good idea to put it inside the K2 due to the power switch and the indicator LED. See image at e.g Aliexpress.com http://www.aliexpress.com/store/product/DC-12V-9800mAh-Super-Rechargeable-Lithium-ion-Battery-Pack-T-1298A/810723_539046329.html . If fitted inside the K2, the switch must be on and then the indicator will discharge the battery - unless someone has found a way to disable the LED without damaging the battery. As an external battery, it would be excellent though, as far as I can tell. Deni F5VJC wrote HI I have just acquired a Super Polymer Lithium Ion battery from an Ebay seller, it's part no. is DC 1298A, (12V 9.8Ah) Also received a small charger with this battery for 120-240 Vac. The physical size seems like it will easily fit inside my K2 with room to spare. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.no/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Modern-battery-for-K2-tp7574669p7577478.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] Modern battery for K2
Thanks Deni, I listed your LiPo battery as an alternative on the LA3ZA Unofficial Guide to Elecraft K2 Modifications under the KBT2 http://la3za.blogspot.no/p/la3za-unofficial-guide-to-elecraft-k2_28.html#KBT2 (scroll down a page or two) - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Modern-battery-for-K2-tp7574669p7577490.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] Difference between K2 rev. A B
Hi Björn, You can also take a look at my Unofficial Guide to Elecraft K2 Modifications at the address http://la3za.blogspot.no/p/la3za-unofficial-guide-to-elecraft-k2.html http://la3za.blogspot.no/p/la3za-unofficial-guide-to-elecraft-k2.html . It has a section describing the serial number 3000+ modifications in an alternative view compared to the Elecraft document. It also adds some minor modifications taken from a comparison between the schematics, and offers some of the background for the 3000+ modifications as well. I have just moved the Unofficial Guide to Elecraft K2 Modifications to a new address and done some slight updating, especially with respect to some of the old missing links. More updating will take place in the days and weeks to come. BTW, old links will automatically be forwarded to the new address. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.no/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Difference-between-K2-rev-A-B-tp7577302p7577347.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] [K2] Diode types for connecting both paddle straight key
It is an advantage to use a Shottky diode for the auto-detect circuit and not a standard silicon diode. I've given the arguments for that here: Reliable auto-detect for keyer for Elecraft K2 http://la3za.blogspot.no/2012/05/reliable-auto-detect-for-keyer-for.html - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://www.qslnet.de/member/la3za/K2/mod.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Diode-types-for-connecting-both-paddle-straight-key-tp7575425p7575473.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] K2 Cosmetic Upgrade
My Elecraft K2 which is now more than 11 years old is still cosmetically in mint condition, except for that single item which sticks out like a sore thumb: The tuning knob. I therefore ordered a new one and the difference is really striking. I feel like I have a new K2 now, well worth the price! A picture is here: http://la3za.blogspot.no/2013/06/cosmetic-k2-upgrade.html - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://www.qslnet.de/member/la3za/K2/mod.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Cosmetic-Upgrade-tp7575014.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: CW decoder - minor sw request
I've had some correspondence regarding my proposal for added characters. Looking at the K3 display on page 12 in the K3 manual, it may be that the display cannot show the details required for these characters. That gives two options: 1. Show the three umlaut characters with a bar over instead. The display can show them as small o, a, u with an overbar. Also show the a with ring as a small a with an accent grave (falling bar) on top 2. Just show the unaccented characters Sverre Holm (LA3ZA) wrote ---. = Ö (o with umlaut, two dots over o) .-.- = Ä (a with umlaut, two dots over a) .--.- = Å (a with ring) ..-- = Ü (u with umlaut, two dots over u) - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://www.qslnet.de/member/la3za/K2/mod.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-CW-decoder-minor-sw-request-tp7572913p7572981.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: CW decoder - minor sw request
The importance of accented letters probably varies from language to language, but in Scandinavia we actually both learn and use the Ä, Ö, and Å in Morse code, so that is the reason for my request. I know this is different in e.g. written French where it seems like one may actually chose to include the accents or not for capital letters and in a headline. That would not work in any of the Scandinavian languages. Gustavo Villada wrote even when I could like have ñ, á..ú, and don't forget the french acute, Ç and others and they have reason, because if I ear a ..-- I wont know what letter is that. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://www.qslnet.de/member/la3za/K2/mod.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-CW-decoder-minor-sw-request-tp7572913p7572988.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] K3: CW decoder - minor sw request
I have recently started to have more Scandinavian CW QSOs and use the CW decoder from time to time. But in the middle of many words it just shows a big * due to a lack of some non-English characters. Would it be possible to add four characters which would cover German, Swedish, Finnish, and sort of Norwegian/Danish also, possibly other languages as well. They are: ---. = Ö (o with umlaut, two dots over o) .-.- = Ä (a with umlaut, two dots over a) .--.- = Å (a with ring) ..-- = Ü (u with umlaut, two dots over u) Hopefully, this won't take up much code space. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://www.qslnet.de/member/la3za/K2/mod.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-CW-decoder-minor-sw-request-tp7572913.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] A Modified K3 in the 2013 ARRL DX Contest
I wonder if the concerns raised in Sept 2011 about this mod have been addressed. At that time the mod generated additional mixer spurs into the VHF range which Wayne, N6KR was concerned with. See link below http://elecraft.365791.n2.nabble.com/quot-K3-test-w-o-amp-w-I7SWX-2T-FSA3157-H-Mode-Mixer-td6812860.html - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://www.qslnet.de/member/la3za/K2/mod.html -- View this message in context: http://elecraft.365791.n2.nabble.com/A-Modified-K3-in-the-2013-ARRL-DX-Contest-tp7570416p7570448.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] Diversity receive w/o dedicated receive antenna
This is an interesting idea. But how is this, I have set up my K3 with the main and sub for use as independent receivers in e.g. a DX pile-up. Don't I then need to open the K3 and reconfigure/rewire it for use as a diversity receiver? - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://www.qslnet.de/member/la3za/K2/mod.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Diversity-receive-w-o-dedicated-receive-antenna-tp7558553p7558604.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] K2-Using a paddle and straight key at the same time….how?
If you want to make the circuit with two diodes for auto detection, then if you have the possibility use Shottky diodes. This is especially so if you also want to use an external keyer from time to time in addition to a straight-key. See Reliable auto-detect for keyer for Elecraft K2 http://la3za.blogspot.com/2012/05/reliable-auto-detect-for-keyer-for.html - Sverre, LA3ZA K2 #2198, K3 #3391 Blog LA3ZA Unofficial Guide to K2 modifications -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Using-a-paddle-and-straight-key-at-the-same-time-how-tp7540055p7540166.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] OT: Distinguishable angular momentum in radio photons?
This is the debunking saying that this is more or less a special case of MIMO - Multiple Input Multiple Output - communications, i.e. using multiple antennas on the rx and tx sides: Is orbital angular momentum (OAM) based radio communication an unexploited area? Ove Edfors and Anders J Johansson, IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2012 http://www.lunduniversity.lu.se/o.o.i.s?id=12683postid=2062936 Abstract: We compare the technique of using the orbital angular momentum (OAM) of radio waves for generating multiple channels in a radio communication scenario with traditional multiple-in-multiple-out (MIMO) communication methods. We demonstrate that, for certain array configurations in free space, traditional MIMO theory leads to eigen-modes identical to the OAM states. From this we conclude that communicating over the sub-channels given by OAM states is a subset of the solutions offered by MIMO, and therefore does not offer any additional gains in capacity. - Sverre, LA3ZA K2 #2198, K3 #3391 LA3ZA Unofficial Guide to K2 modifications -- View this message in context: http://elecraft.365791.n2.nabble.com/OT-Distinguishable-angular-momentum-in-radio-photons-tp7525974p7528491.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] Gamma P/S
I have Gamma HPS-1a small switching supply which I use with my K2 + KPA100 as an easily movable rig. I always use it to feed a ladderwire via a balun to a nonresonant antenna. Therefore the feedline may pick up stuff very close to the power supply (i.e. 1-2 m away). I have noticed that on 15 meter CW, I often hear a swooshing noise right after I have transmitted. It is very annoying as it comes right at the time when one listens for the other stations to confirm reception in e.g. a contest. I think it is a frequency varying noise that sweeps over my frequency as the load on the power supply changes. I would very much like to learn of a way to suppress it, Sverre/LA3ZA http://la3za.blogspot.com/ - Sverre, LA3ZA K2 #2198, K3 #3391 LA3ZA Unofficial Guide to K2 modifications -- View this message in context: http://elecraft.365791.n2.nabble.com/Gamma-P-S-tp7443028p7444145.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] Gamma P/S
Sverre Holm (LA3ZA) wrote I always use it to feed a ladderwire via a balun to a nonresonant antenna. This was a bit unclear. From the KAT100 a short coax goes to a balun, then to the ladderwire which goes outside to the antenna. - Sverre, LA3ZA K2 #2198, K3 #3391 LA3ZA Unofficial Guide to K2 modifications -- View this message in context: http://elecraft.365791.n2.nabble.com/Gamma-P-S-tp7443028p7444150.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] De-sensed K3 after xmit
I have experienced something similar and my impression is that it is the noise blanker that sometimes needs some time to recover, but this is just my gut feeling at the moment. - Sverre, LA3ZA K2 #2198, K3 #3391 LA3ZA Unofficial Guide to K2 modifications -- View this message in context: http://elecraft.365791.n2.nabble.com/De-sensed-K3-after-xmit-tp7188936p7189634.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] [K3] P3 command to center display on CW band
Is there a possibility to program a P3 key to center the display on x.025 MHz? I prefer to use the P3 in an overview mode with 50 kHz span covering from e.g. 14.000 to 14.050 and then I zoom in using a span of 10 kHz during a pile-up. As I go back to 50 kHz span, the center frequency changes to whatever frequency I happen to be on. What is the easiest way to recenter the display on 14.025 without using the 'CENTER' function and rotate the selector until I have the right frequency span? - Sverre, LA3ZA K2 #2198, K3 #3391 LA3ZA Unofficial Guide to K2 modifications -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-P3-command-to-center-display-on-CW-band-tp7071454p7071454.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] How many are still building K2's?
Congratulations Martin and welcome among the K2 owners. Mine is now my second rig as the K3 is my main home rig, but it is still a wonderful little rig for travel with lots of performance. - Sverre, LA3ZA K2 #2198, K3 #3391 LA3ZA Unofficial Guide to K2 modifications -- View this message in context: http://elecraft.365791.n2.nabble.com/How-many-are-still-building-K2-s-tp6752024p6755230.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] P3 and aurora
Thanks Tom The P3 utility's ability to copy the display of the P3 and make it into a BMP-file is really nice for getting images like these, especially if the interface is run at a high rate like 38400 bps. Tommy Alderman wrote: Very good images Sverre, thanks for putting them up! - Sverre, LA3ZA K2 #2198, K3 #3391 LA3ZA Unofficial Guide to K2 modifications -- View this message in context: http://elecraft.365791.n2.nabble.com/P3-and-aurora-tp6658335p6659214.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] P3 and aurora
We had nice aurora conditions here tonight and it was interesting to see how the bandwidth of the CW signals had increased on the P3's display compared to normal CW. See http://la3za.blogspot.com/2011/08/aurora-50-mhz-and-electraft-p3.html http://la3za.blogspot.com/2011/08/aurora-50-mhz-and-electraft-p3.html - Sverre, LA3ZA K2 #2198, K3 #3391 LA3ZA Unofficial Guide to K2 modifications -- View this message in context: http://elecraft.365791.n2.nabble.com/P3-and-aurora-tp6658335p6658335.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
