[Elecraft] K3 filter WTB
Morning all A long shot:- does any UK user want to sell me a used roofing CW filter for the K3 ? Prefer 500Hz but open to suggestions. Thanks John G4ZTR __ Information from ESET NOD32 Antivirus, version of virus signature database 7644 (20121030) __ The message was checked by ESET NOD32 Antivirus. http://www.eset.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] Battery Charging
If it is true that all modern chargers and laptop supplies are switchmode (?), I can't immediately see why they shouldn't run from a suitable dc supply, since the first thing that happens in a switcher is to rectify the mains. Even my 5 year old stuff is universal input, ie very wide voltage range. So, they could pipe unregulated dc around the cabins. Each outlet would need to be equipped with a ptc protection device to protect the supply and the load in case a conventional device was attached. A plug-in accessory with a bridge rectifier in it would also do the trick. Sorry if this is getting off topic. David G3UNA Using 400Hz power is risky, because the current in the RFI bypass capacitors will much higher than normal. The leakage current through the capacitors to the output and other accessible parts will be high, possibly high enough to be a shock hazard. Running a 50-60Hz product from 400Hz power may also cause early failure of those capacitors. --Tim (KR0U) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] KRX3 insatall
Thanks Wayne. All the settings look good. With the balance knob fully clockwise, the sub is in the right ear. Turning CCW, the main starts to be heard at 3:30. 73, Mike NF4L On Oct 30, 2012, at 9:28 PM, Wayne Burdick n...@elecraft.com wrote: Mike, The KRX3 should have the same overall gain as the K3's main receiver. Try going into BSET Mode to see if the preamp is turned on on the sub receiver. You can also adjust other sub-RX settings in BSET mode, including NB, NR, and filter bandwidth, all of which can affect gain. 73, Wayne N6KR On Oct 30, 2012, at 5:48 PM, Mike Reublin wrote: The KRX3 is installed and working! Time was 5 1/2 hours including configuration. Usual outstanding fit and instructions. I installed it to use the ATU for aux, and I put the BNC in if I ever want to change. I have it set to use the SUB AF control as balance. FIrst impression listening to one station working up 1 on 30M: The KRX3 has a noticeably lower volume. And I found out my speakers and headphones are opposite (left/right) to each other... Mike, NF4L __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3/KX3 data sub-modes
On the K3 and KX3, is it possible to set/get the sub-mode of PSK D (45 or 75 baud.)? Is it likely in the future that the K3 and KX3 will support a 63 baud variant of PSK D? - Julian, G4ILO. K2 #392 K3 #222. * G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-KX3-data-sub-modes-tp7564849.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] KX3 and HDSDR?
Has anyone with a KX3 successfully interfaced the HDSDR program to be able to use it for control and spectrum display? Not having much luck here. My laptop does have a very good integrated stereo soundcard with selectable stereo line-in or mono microphone and an available 96K sample rate. Please reply OFF LIST to keep the chatter on this subject to a minimum for those who aren't interested. Thanks, Jim - W0EB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] KX3 and HDSDR?
Jim, I was able to make it work. I have an E-MU-0202 card capable of 192KHz, but I only use 48KHz as I like the definition better. I was unaware of any internal laptop sound cards that will run at greater than 48 KHz. If your sound card input is stereo, I suggest you try 48KHz and see what happens. 73, Barry K3NDM On 10/31/2012 10:07 AM, Jim Sheldon wrote: Has anyone with a KX3 successfully interfaced the HDSDR program to be able to use it for control and spectrum display? Not having much luck here. My laptop does have a very good integrated stereo soundcard with selectable stereo line-in or mono microphone and an available 96K sample rate. Please reply OFF LIST to keep the chatter on this subject to a minimum for those who aren't interested. Thanks, Jim - W0EB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Need Headphone recommendations for K3
On 10/30/2012 6:57 PM, Jack Berry wrote: I checked out the link and the Radiosport looks like the David Clarke aviation sets - mic and head phones. Is it just as heavy and clamp as tightly? These are AWFUL headsets for ham radio -- VERY heavy and uncomfortable. A few guys in our contest club fell for the hype and bought them, and they hated them. I tried them on at a meeting and found them very uncomfortable. They're also VERY expensive as compared to other much better headsets. If you want a headset without a mic, the Sony MDR7506 (pro) or consumer equivalent work really well with a K3, and with every other ham rig I've used them with. The Yamaha CM500 is equally comfortable and good sounding, the boom mic sounds great with a K3, and can be bought for less than $50, shipping included. . 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 configuration - print out available?
I haven't used it for awhile, so foggy on memory, but it seems to me that Ham Radio Deluxe did a fair job listing the settings. Maybe I'm wrong. Rich, n0ce - Original Message - From: Jim McDonald j...@n7us.net To: elecraft@mailman.qth.net Sent: Tuesday, October 30, 2012 5:11 AM Subject: Re: [Elecraft] K3 configuration - print out available? As I've mentioned before, I did a copy and paste of the K3 manual to create an Excel file of the Main and Configuration menus. It's not automatic, but it does allow you to keep a soft copy of your choices. Just erase or overwrite my selections (at the time I uploaded it) with yours. It available in the Files area of the Yahoo K3 reflector, http://groups.yahoo.com/group/Elecraft_K3/files/, so you may have to join that reflector to be able to download the file. 73, Jim N7US -Original Message- This feature would be really handy, not only for those lucky ones who can have more than one K3, but also for situation like hey, I messed around the configs and can't remember what I changed, let's compare with backup. David Fleming df...@yahoo.com writes: Hi Hoop, At present, there is no way to get a human readable print out of the K3 configuration using the K3 Utility. The configuration files created by the K3 Utility are intended to be used only by the K3 Utility to restore the configuration back to the K3. There has been some discussion of adding such a feature at some point in the future, but I doubt it will happen anytime soon. David, W4SMT From: J.K. Hooper jkhoo...@rockisland.com Is there a way, I wonder, to get a print out of the configuration information that the K3 Utility Program (Mac version) stores? 73, K9QJS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Need Headphone recommendations for K3
I whole-heartedly vote in for the Bose QC-15, or any of their noise cancelling mics. What they do to the background noise is the best of If all the competition and they are incredibly comfortable. I prefer the kind that completely cover your ears but they do make an on the ears version that will let outside sounds get through more than the full cover variety. If you need to have a built in mic, they do make an avionics set but that's very expensive. Me being a CW op use a table mic for my rare SSB, the regular QC-15 headset is just perfect. Gary KA1J *I would like some recommendations on a high quality replacement with ear buds and a high quality mike that works well with the K3.* * * *My research has just begun so any guidance would be appreciated. * * * *-- 73 Dave K3FT* __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Need Headphone recommendations for K3
“If you want a headset without a mic, the Sony MDR7506 (pro) or consumer equivalent work really well with a K3, and with every other ham rig I've used them with. ..” I totally agree with Jim. Hard to beat the Sony MDR7506 headphones. Phil – AD5X __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Need Headphone recommendations for K3
I prefer the Sony MDR-V6. Same as the 7506 but a little less bright sounding. 73 de na6m -Original Message- From: Phil Debbie Salas dpsa...@tx.rr.com To: elecraft@mailman.qth.net Date: Wed, 31 Oct 2012 11:44:45 -0500 Subject: Re: [Elecraft] Need Headphone recommendations for K3 “If you want a headset without a mic, the Sony MDR7506 (pro) or consumer equivalent work really well with a K3, and with every other ham rig I've used them with. ..” I totally agree with Jim. Hard to beat the Sony MDR7506 headphones. Phil – AD5X __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft [http://mailman.qth.net/mailman/listinfo/elecraft] Help: http://mailman.qth.net/mmfaq.htm [http://mailman.qth.net/mmfaq.htm] Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net [http://www.qsl.net/] Please help support this email list: http://www.qsl.net/donate.html [http://www.qsl.net/donate.html] __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KRX3 insatall
I built my K3/10 and installed the KRX3 with no issues of different audio levels. BTW running both Rx with dual LP-Pan on MAP65v2.3 sw shows the audio level on a bar graph for each (when in diversity mode). Two things were recently done to improve use of the LP-Pan: 1) Enabling an open filter position in the K3 and KRX3 eliminates gain suck out by roofing filter which is connected in parallel with the IF output jack. It shows as a dip in gain on a panadaptor spectrum display at center freq. 2) Installed 32.860 MHz xtal in LP-Pan which is 4x the IF freg of 8.215 MHz which eliminates the previous +6 KHz freq. off set in the display sw (thanks to Larry, N8LP). My 2m-eme dual-polarity adaptive receive system will get a work-out in this weekend's eme contest. It extensively uses the dual-Rx diversity reception mode of the K3. 73, Ed - KL7UW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Need Headphone recommendations for K3
You should consider the JRC ST-3 headphones. I have used mine for about 15 years as an SWL and ham -- most recently with my new K3. I do not need to adjust the volume when switching from speaker to headphones (except for the CW sidetone) and the comfort and ability to hear both weak and strong signals are perfect for me. Here is a link to the eHam reviews: http://www.eham.net/reviews/detail/404 73 ES GOD BLESS U ES URS DE KEN N4OI -- View this message in context: http://elecraft.365791.n2.nabble.com/Need-Headphone-recommendations-for-K3-tp7564758p7564859.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] kx3pa
wondering if anyone knows of a possible date for availability of the kx3 100 watt amp. Asking to get funds in order prior. Reggie k6xr Ham Radio Since 1955 DXCC,RCC,WAZ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] kx3pa
On the Shipping Status page: In final engineering development. Estimated shipping date Q1 2013. Matt W6NIA -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Reginald J Mackey SR Sent: Wednesday, October 31, 2012 11:34 AM To: Elecraft List Subject: [Elecraft] kx3pa wondering if anyone knows of a possible date for availability of the kx3 100 watt amp. Asking to get funds in order prior. Reggie k6xr Ham Radio Since 1955 DXCC,RCC,WAZ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 - using ear buds
I'm a cw only op also. Over the years I've had custom made inner ear plugs, a Meyer Aviation Headset, Extreme Isolation headphones, Yamaha headphones, ear-buds of all kinds, ...etc...etc Every over-the-ears headset I've ever tried ended up hurting my ears. I ended up staying with el-cheepo Maxel stereo head buds: http://www.amazon.com/Maxell-HB-202-Stereo-Line-Silver/dp/B6JPRQ/ref=sr_1_1?ie=UTF8qid=1351714933sr=8-1keywords=Maxell+HB-202+Stereo+Line+Head+Buds%2C+Silver%27+by+Maxell They are quick and easy to take on/off. They are so light, you forget they are on. You don't have to jam them into your ears. The only additional feature that would be nice is small foam cushion tips. -- bw...@fastmail.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KRX3 insatall
Hi, I have absolutely no dip in the center of my LP-Pan display and I have never heard anybody else having this problem either. The IF out port and the crystal filter bank are driven in parallel by a buffer amplifier that appears to be capable of driving both without gain loss due to the crystal filter load. AB2TC - Knut Edward R Cole wrote I built my K3/10 and installed the KRX3 with no issues of different audio levels. BTW running both Rx with dual LP-Pan on MAP65v2.3 sw shows the audio level on a bar graph for each (when in diversity mode). Two things were recently done to improve use of the LP-Pan: 1) Enabling an open filter position in the K3 and KRX3 eliminates gain suck out by roofing filter which is connected in parallel with the IF output jack. It shows as a dip in gain on a panadaptor spectrum display at center freq. 2) Installed 32.860 MHz xtal in LP-Pan which is 4x the IF freg of 8.215 MHz which eliminates the previous +6 KHz freq. off set in the display sw (thanks to Larry, N8LP). My 2m-eme dual-polarity adaptive receive system will get a work-out in this weekend's eme contest. It extensively uses the dual-Rx diversity reception mode of the K3. 73, Ed - KL7UW -- View this message in context: http://elecraft.365791.n2.nabble.com/KRX3-insatall-tp7564774p7564863.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] KRX3 insatall
If one looks at the schematic there is a JFET buffer between the IF and the IF out in the main RX. Isolation and impedance matching is its function. There is no stock IF out for the subrx and hence no JFET. JFETs have really high input impedances. A one resistor gain mod is on the K3 site reduces the signal loss in this JFET stage for those using the IF output jack. 73 de Brian/K3KO On 10/31/2012 21:10, ab2tc wrote: Hi, I have absolutely no dip in the center of my LP-Pan display and I have never heard anybody else having this problem either. The IF out port and the crystal filter bank are driven in parallel by a buffer amplifier that appears to be capable of driving both without gain loss due to the crystal filter load. AB2TC - Knut Edward R Cole wrote I built my K3/10 and installed the KRX3 with no issues of different audio levels. BTW running both Rx with dual LP-Pan on MAP65v2.3 sw shows the audio level on a bar graph for each (when in diversity mode). Two things were recently done to improve use of the LP-Pan: 1) Enabling an open filter position in the K3 and KRX3 eliminates gain suck out by roofing filter which is connected in parallel with the IF output jack. It shows as a dip in gain on a panadaptor spectrum display at center freq. 2) Installed 32.860 MHz xtal in LP-Pan which is 4x the IF freg of 8.215 MHz which eliminates the previous +6 KHz freq. off set in the display sw (thanks to Larry, N8LP). My 2m-eme dual-polarity adaptive receive system will get a work-out in this weekend's eme contest. It extensively uses the dual-Rx diversity reception mode of the K3. 73, Ed - KL7UW -- View this message in context: http://elecraft.365791.n2.nabble.com/KRX3-insatall-tp7564774p7564863.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 - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2221 / Virus Database: 2441/5365 - Release Date: 10/31/12 - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2221 / Virus Database: 2441/5365 - Release Date: 10/31/12 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] KX3's all over the CW/QRP bands
I'm amazed at what a high proportion of my contacts recently have been ops with KX3s. I'm sure a lot of it has to do with it being relatively new, so will get preferential use from hams who have plenty of options, but it still surprises me. I'm only doing CW and hanging about the QRP watering holes, but a WAG is that at least 1 in 3 of my contacts is playing with a KX3. Great market penetration! Chip AE5KA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] KXDP3 and KXBC3 question
This is a question for the group and not Elecraft staff.not that I don't value their input but I want to be a good ham op and not do what I am told not too. My KX3 serial number is 1990 and the KXPD3 and KXBC3 were put on back order. I know the folks at Elecraft are shipping these items now but I was wondering if anyone close to my serial number has received theirs?? I know we are not to bother Elecraft with this question and that is why I am asking the group. Mike VE3WDM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] A Bummer! Well, Sort Of!
Hi All, Last Saturday I got a notice from Elecraft that my KAT500 was in the loop, and for me to confirm my order, which I did post haste. Monday morning I got an auto shipping notice. I thought, Boy, that's fast! The tracking info said it would be here today. Well, a package did arrive, from Elecraft, but it was the KXBC3, for my KX3, instead of the KAT500! Shucks! Of course, I'm glad to have the KXBC3, but it isn't close to what I'm most anxious to have on the operating desk. Sure wish Elecraft would put a bit more info in their shipping notices, like what it is that's coming! I suppose that's too time consuming. Anyway, guess I'll have a beer and get ready for the onslaught tonight! Halloween! We tend to get lots of kids, which I don't mind. The reason we get so many is that we live in a relatively enclosed neighborhood development, with just two ways in and out, whereas most of the other homes in the area surrounding us are scattered all over the desert. So, lots of folks bring their kids here, from Lord only knows where, and let them do their thing! A little unfair for us here in the neighborhood, perhaps, but hey! It's for the kids! I think I have about an hour and a half before the doorbell starts ringing off the wall! Happy Halloween everyone! Dave W7AQK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] KRX3 insatall
I don't have an L-P Pan. Mike NF4L On Oct 31, 2012, at 5:10 PM, ab2tc ab...@arrl.net wrote: Hi, I have absolutely no dip in the center of my LP-Pan display and I have never heard anybody else having this problem either. The IF out port and the crystal filter bank are driven in parallel by a buffer amplifier that appears to be capable of driving both without gain loss due to the crystal filter load. AB2TC - Knut Edward R Cole wrote I built my K3/10 and installed the KRX3 with no issues of different audio levels. BTW running both Rx with dual LP-Pan on MAP65v2.3 sw shows the audio level on a bar graph for each (when in diversity mode). Two things were recently done to improve use of the LP-Pan: 1) Enabling an open filter position in the K3 and KRX3 eliminates gain suck out by roofing filter which is connected in parallel with the IF output jack. It shows as a dip in gain on a panadaptor spectrum display at center freq. 2) Installed 32.860 MHz xtal in LP-Pan which is 4x the IF freg of 8.215 MHz which eliminates the previous +6 KHz freq. off set in the display sw (thanks to Larry, N8LP). My 2m-eme dual-polarity adaptive receive system will get a work-out in this weekend's eme contest. It extensively uses the dual-Rx diversity reception mode of the K3. 73, Ed - KL7UW -- View this message in context: http://elecraft.365791.n2.nabble.com/KRX3-insatall-tp7564774p7564863.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KRX3 insatall
Is that the addition across R91 if R91 is greater that 22 ohms? IF out would affect the P3, not audio volume, right? Mike NF4L On Oct 31, 2012, at 5:55 PM, Brian Alsop als...@nc.rr.com wrote: If one looks at the schematic there is a JFET buffer between the IF and the IF out in the main RX. Isolation and impedance matching is its function. There is no stock IF out for the subrx and hence no JFET. JFETs have really high input impedances. A one resistor gain mod is on the K3 site reduces the signal loss in this JFET stage for those using the IF output jack. 73 de Brian/K3KO On 10/31/2012 21:10, ab2tc wrote: Hi, I have absolutely no dip in the center of my LP-Pan display and I have never heard anybody else having this problem either. The IF out port and the crystal filter bank are driven in parallel by a buffer amplifier that appears to be capable of driving both without gain loss due to the crystal filter load. AB2TC - Knut Edward R Cole wrote I built my K3/10 and installed the KRX3 with no issues of different audio levels. BTW running both Rx with dual LP-Pan on MAP65v2.3 sw shows the audio level on a bar graph for each (when in diversity mode). Two things were recently done to improve use of the LP-Pan: 1) Enabling an open filter position in the K3 and KRX3 eliminates gain suck out by roofing filter which is connected in parallel with the IF output jack. It shows as a dip in gain on a panadaptor spectrum display at center freq. 2) Installed 32.860 MHz xtal in LP-Pan which is 4x the IF freg of 8.215 MHz which eliminates the previous +6 KHz freq. off set in the display sw (thanks to Larry, N8LP). My 2m-eme dual-polarity adaptive receive system will get a work-out in this weekend's eme contest. It extensively uses the dual-Rx diversity reception mode of the K3. 73, Ed - KL7UW -- View this message in context: http://elecraft.365791.n2.nabble.com/KRX3-insatall-tp7564774p7564863.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 - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2221 / Virus Database: 2441/5365 - Release Date: 10/31/12 - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2221 / Virus Database: 2441/5365 - Release Date: 10/31/12 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KX3 review in Dec QST
Also in CQ. Gil, W1RG Date: Wed, 31 Oct 2012 13:56:35 + From: dave.g4...@gmail.com To: elecraft@mailman.qth.net Subject: [Elecraft] KX3 review in Dec QST ARRL members will find the review of the KX3 in the December QST, it is available to download from the ARRL web site ( http://www.arrl.org/reviews-listed-by-issue). 73 Dave, G4AON __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KRX3 insatall
On 10/31/2012 4:34 PM, Mike Reublin wrote: Is that the addition across R91 if R91 is greater that 22 ohms? IF out would affect the P3, not audio volume, right? Long thread, getting confused. 1. The IF output [to a P3 or anything else listening to 8215 KHz on the IF OUT BNC connector] comes from the main receiver in the K3. 2. So far as I know, there is *no* IF output from the sub-receiver unless you home brew it. 3. Earlier K3 S/N's had a somewhat low IF output for a P3, which probably didn't exist then. Elecraft offers a mod [you're surprised? :-)]. It involves removing one SM resistor and replacing it with another. They supply both an SMD and a leaded-resistor, with instructions for both. I used the leaded one, works fine. 4. I don't know what earlier means, but my K3 is S/N 642 and I did the mod. Second biggest problem was disconnecting the nest of wires from my wireless to get it out to work on. Biggest problem was reconnecting all of them. 5. Somewhere in the delivery of later S/N's, the mod has been incorporated. 6. With the mod completed [really easy], and all the wires reconnected, I calibrated my S-meter to S9=50uV from my service monitor. The P3 then calibrated nicely so S9=-73dBm on the ordinate. That's my story and I'm sticking to it. 73, Fred K6DGW - Northern California Contest Club - CU in the 2013 Cal QSO Party 5-6 Oct 2013 - www.cqp.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] N1MM Setup
Although I have used it before, cannot seem to setup my K3 with N1MM so that it keys the rig - annoying - help would be appreciated. Thank you in advance. The program indicates No CW port is setup in config. Configurer shows port 8 with checkmark in CW box - perhaps my settings in the COM8 box are wrong? Using RS-232 cable from computer with virtual software on port 8 - other programs work on this port. Sound cables from computer to radio work for all modes using other software. OE for certain. - Tony, N3ME - 118 Ashwood Street Bethany Beach, DE 19930-9699 (302) 539-5638 Grid: FM28lm http://www.n3me.net Elecraft K3 # 2462 PVRC Member __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] KAT100 ATU power metering - a question from VK7JB
Hi Group, I've just finished building and calibrating a KAT100 to go with my K2 / KPA100 combination. The build was very smooth and the calibration routine straight forward. It's tuning my 80m loop, multi-band, just fine. I'd like to check my understanding about the SWR/Power metering with this K2 + KPA100 + KAT100 set up: Is the forward power value displayed on the LCD of the K2 during TUNE in this setup being measured by the SWR bridge in the KPA100? My understanding is that the forward power value IS provided by the KPA100 and NOT the KAT100. Is the SWR value displayed on the LCD of the K2 during TUNE measured at the KPA100 or the KPA100 bridge? Thanks for the clarification. Cheers, John VK7JB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] KAT100 ATU power metering - a question from VK7JB
John, If the KAT100 is used with the basic K2 (no KPA100), then the KAT100 will provide the forward and reverse power indication and those values will be displayed by the K2 during a TUNE. When the KPA100 is connected those forward and reflected values come from the KPA100. A similar calculation of SWR is done in the KAT100 to display the SWR on the LEDs. 73, Don W3FPR On 10/31/2012 9:28 PM, zen...@netspace.net.au wrote: I've just finished building and calibrating a KAT100 to go with my K2 / KPA100 combination. The build was very smooth and the calibration routine straight forward. It's tuning my 80m loop, multi-band, just fine. I'd like to check my understanding about the SWR/Power metering with this K2 + KPA100 + KAT100 set up: Is the forward power value displayed on the LCD of the K2 during TUNE in this setup being measured by the SWR bridge in the KPA100? My understanding is that the forward power value IS provided by the KPA100 and NOT the KAT100. Is the SWR value displayed on the LCD of the K2 during TUNE measured at the KPA100 or the KPA100 bridge? Thanks for the clarification. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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: High SWR On Dummy Load
Don, I took off the shield on the KPA100 and those two diodes are tight against the back panel and the toroid. What would you recommend is the best way to desolder and replace those? It is tight against the back panel and a toroid. I do not want to risk damaging the nearby toroid - so I think I will remove the the standoffs and remove the PCB from the heat sink and desolder it from the back side (non component) side. Is this what you would do? Thanks Ariel NY4G Sent from my iPad On Oct 26, 2012, at 8:10 AM, Don Wilhelm w3...@embarqmail.com wrote: Ariel, You may indeed have a problem with D9 and the 3 associated resistors in the base K2, BUT when the KAT2 or the KPA100 is installed, that circuit is ignored. Both the KAT2 and the KPA100 contain a true wattmeter that is positioned right at the output and used for power control. The K2 microprocessor reads the actual output and compares that to the power knob setting. That result tells the microprocessor how to adjust the drive. Unlike other ham transceivers, the K2 uses a closed loop to control the power instead of simply adjusting the drive. What that also means is that the wattmeter in the KPA100 is not working (you have shown that the one in the KAT2 is working OK). As I indicated before (and also indicated by your high SWR indication) there is a high probability that KPA100 diodes D16 and D17 have been damaged. When the diodes are damaged, the output back to the MCU is most likely zero, and the MCU *thinks* there is no power output - it then increases the drive to the maximum in an attempt to develop power. The result is a HiCur warning and stress on the base K2 PA transistors. Replace KPA100 D16 and D17 as the first order of business and after that you can investigate any remaining problems. Note that those diodes can be half bad and may show as good with a diode test - replacement is the first order of business. 73, Don W3FPR On 10/25/2012 11:31 PM, Ariel Jacala wrote: Don The K2 with the ATU behaves as expected - internal meter agrees well with the external meter, current draw is as expected, and so forth for various power levels up to 10watts checked out. It was connected to a dummy load. Without the ATU and the dummy load connected to the base K2 antenna, things are rather strange At 2 watts set on the power knob, output on the external meter is 2.7 watts and current draw is 0.96 amps; at a knob setting of 2.4 watts, output is up to 7 watts on the external meter and current draw is 1.4 amps; at a knob setting of 2.5 watts, power output is 10 watts and current draw is 1.96 amps; at 3 watts knob setting, I get the high current warning, and the external meter is pegged. This leads me to believe that the base K2 is overdriving the KPA100. At low power settings - 5 watts, I was pegging the LEDs indicating power on the LDG100 autotuner, at over 125 watts. Ariel NY4G Sent from my iPad On Oct 25, 2012, at 11:51 AM, Don Wilhelm w3...@embarqmail.com wrote: Ariel, Do not be too quick to conclude that there is something wrong with the base K2. The basic K2 uses only an RF voltage diode to display the power output, and it may not be exact - it depends on the load and may vary from band to band - if it only off by a watt or two, then all is OK That is bypassed when the KAT2 or KPA100 is installed. Yes, do check with the external wattmeter - both with and without the KPA100. I still think KPA100 diodes D16 and D17 are highest on the suspect list with other KPA100 wattmeter components being second on that list. 73, Don W3FPR On 10/25/2012 11:18 AM, Ariel Jacala wrote: Thanks to Jim, Vic and Don for the return comments I disconnected the KPA100 and put on the K2 top with the KAT2 ATU. With the K2 ATU connected and the dummy load connected - the SWR correctly reads 1:1 with menu set for CALS. With the menu set to CALP, the power levels appeared to modulate correctly with the PWR knob although this is an item i have to double check. With the ATU disconnected, the displayed power on tune differs from the power setting. This suggests to me that there is something wrong with the base K2. I still have to do what Don suggested about connection to an external watt meter. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list:
Re: [Elecraft] N1MM Setup
Hello Tony, Last night I changed over from a true RS232 CAT interface to a USB to Serial port converter. I had all kinds of problems with N1MM and Logger32 not recognizing the new set-up. Then I re-booted the computer and all worked great. You didn't say what you're using for a CW interface...I use WinKey. You can also use a single cable for CAT and CW keying. I used this once for a contest and it worked well. Here's how: *** At Dayton I heard rumors that the K3 (and the KX3) could send CW in N1MM Contesting program with no need for a second control line (RS-232 or Interface to key through the key jack). I searched the K3 mailing list and found this from Joe, W4TV: You can use a standard USB to serial adapter to do PTT and CW with the K3 with no other interface. Set the K3's CONFIG:PTT-KEY menu item to rtS-dtr, check CW/Other on the Radio port in N1MM, set DTR = CW, set RTS=PTT and *UNCHECK* all of the PTT via Radio Command options. The degree to which CW operates cleanly depends on other processes in your computer. You may or may not be happy with the results... This weekend for the CQ WPX CW I tried it and it worked flawlessly! I have done a screen capture of the configuration screen in N1MM and posted it at: http://www.k8zt.com/K3_Keying_CW_with_N1MM.jpg *** I don't know if this will help but it's worth a shot. On 10/31/2012 8:26 PM, Tony McClenny wrote: Although I have used it before, cannot seem to setup my K3 with N1MM so that it keys the rig - annoying - help would be appreciated. Thank you in advance. The program indicates No CW port is setup in config. Configurer shows port 8 with checkmark in CW box - perhaps my settings in the COM8 box are wrong? Using RS-232 cable from computer with virtual software on port 8 - other programs work on this port. Sound cables from computer to radio work for all modes using other software. OE for certain. - Tony, N3ME - 118 Ashwood Street Bethany Beach, DE 19930-9699 (302) 539-5638 Grid: FM28lm http://www.n3me.net Elecraft K3 # 2462 PVRC Member __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- 73, Gary K9GS Greater Milwaukee DX Association: http://www.gmdxa.org Society of Midwest Contesters: http://www.w9smc.com CW Ops #1032 http://www.cwops.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2: High SWR On Dummy Load
Ariel. While it is sometimes possible to clip the leads on the top of the board and use the remaining leads to mount new diodes, I suggest that is cheating. I always remove the board from the heatsink and de-solder the diodes from below. Usually, the thermal pads will stay in place and can be re-used unless they become torn. 73, Don W3FPR On 10/31/2012 10:34 PM, Ariel Jacala wrote: Don, I took off the shield on the KPA100 and those two diodes are tight against the back panel and the toroid. What would you recommend is the best way to desolder and replace those? It is tight against the back panel and a toroid. I do not want to risk damaging the nearby toroid - so I think I will remove the the standoffs and remove the PCB from the heat sink and desolder it from the back side (non component) side. Is this what you would do? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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: High SWR On Dummy Load
If you can clip the bad diodes off at the glass enclosures, you may be able to simply lay the new ones in place and solder their leads to the stubs sticking up out of the pcb, then trim the excess off. I can tell you from years of experience that a lot of field repairs are made that way on commercial equipment and they are as solid as sucking out the leads and installing parts in the holes in the pcb. If you do remove the heat sink, be aware that the thermal pads between the transistors and the heat sink may tear with some of the pad sticking to the transistor and some stuck to the heat sink. That's not a show stopper as long as you don't lose sections of pads. Just leave the pads alone. When you put it back together when you're done the pads will fit and work just fine. And do NOT forget to retighten the screws in the transistors after about 5 to 10 hours of operation. We are the same age so you'll probably remember having to re-tighten head gaskets on cars a short while after replacing them in the old days. This is much the same, Hi! 73 Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ariel Jacala Sent: Wednesday, October 31, 2012 7:35 PM To: d...@w3fpr.com Cc: elecraft reflector Subject: Re: [Elecraft] K2: High SWR On Dummy Load Don, I took off the shield on the KPA100 and those two diodes are tight against the back panel and the toroid. What would you recommend is the best way to desolder and replace those? It is tight against the back panel and a toroid. I do not want to risk damaging the nearby toroid - so I think I will remove the the standoffs and remove the PCB from the heat sink and desolder it from the back side (non component) side. Is this what you would do? Thanks Ariel NY4G Sent from my iPad On Oct 26, 2012, at 8:10 AM, Don Wilhelm w3...@embarqmail.com wrote: Ariel, You may indeed have a problem with D9 and the 3 associated resistors in the base K2, BUT when the KAT2 or the KPA100 is installed, that circuit is ignored. Both the KAT2 and the KPA100 contain a true wattmeter that is positioned right at the output and used for power control. The K2 microprocessor reads the actual output and compares that to the power knob setting. That result tells the microprocessor how to adjust the drive. Unlike other ham transceivers, the K2 uses a closed loop to control the power instead of simply adjusting the drive. What that also means is that the wattmeter in the KPA100 is not working (you have shown that the one in the KAT2 is working OK). As I indicated before (and also indicated by your high SWR indication) there is a high probability that KPA100 diodes D16 and D17 have been damaged. When the diodes are damaged, the output back to the MCU is most likely zero, and the MCU *thinks* there is no power output - it then increases the drive to the maximum in an attempt to develop power. The result is a HiCur warning and stress on the base K2 PA transistors. Replace KPA100 D16 and D17 as the first order of business and after that you can investigate any remaining problems. Note that those diodes can be half bad and may show as good with a diode test - replacement is the first order of business. 73, Don W3FPR On 10/25/2012 11:31 PM, Ariel Jacala wrote: Don The K2 with the ATU behaves as expected - internal meter agrees well with the external meter, current draw is as expected, and so forth for various power levels up to 10watts checked out. It was connected to a dummy load. Without the ATU and the dummy load connected to the base K2 antenna, things are rather strange At 2 watts set on the power knob, output on the external meter is 2.7 watts and current draw is 0.96 amps; at a knob setting of 2.4 watts, output is up to 7 watts on the external meter and current draw is 1.4 amps; at a knob setting of 2.5 watts, power output is 10 watts and current draw is 1.96 amps; at 3 watts knob setting, I get the high current warning, and the external meter is pegged. This leads me to believe that the base K2 is overdriving the KPA100. At low power settings - 5 watts, I was pegging the LEDs indicating power on the LDG100 autotuner, at over 125 watts. Ariel NY4G Sent from my iPad On Oct 25, 2012, at 11:51 AM, Don Wilhelm w3...@embarqmail.com wrote: Ariel, Do not be too quick to conclude that there is something wrong with the base K2. The basic K2 uses only an RF voltage diode to display the power output, and it may not be exact - it depends on the load and may vary from band to band - if it only off by a watt or two, then all is OK That is bypassed when the KAT2 or KPA100 is installed. Yes, do check with the external wattmeter - both with and without the KPA100. I still think KPA100 diodes D16 and D17 are highest on the suspect list with other KPA100 wattmeter components being second on that list. 73, Don W3FPR On 10/25/2012 11:18 AM, Ariel Jacala
Re: [Elecraft] K2: High SWR On Dummy Load
Wayne has assured me that torn pads are no problem as long as pieces are not pulled off and lost, and I have been through that many times with no deleterious effects on my KPA100! Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Don Wilhelm Sent: Wednesday, October 31, 2012 8:03 PM To: Ariel Jacala Cc: elecraft reflector Subject: Re: [Elecraft] K2: High SWR On Dummy Load Ariel. While it is sometimes possible to clip the leads on the top of the board and use the remaining leads to mount new diodes, I suggest that is cheating. I always remove the board from the heatsink and de-solder the diodes from below. Usually, the thermal pads will stay in place and can be re-used unless they become torn. 73, Don W3FPR On 10/31/2012 10:34 PM, Ariel Jacala wrote: Don, I took off the shield on the KPA100 and those two diodes are tight against the back panel and the toroid. What would you recommend is the best way to desolder and replace those? It is tight against the back panel and a toroid. I do not want to risk damaging the nearby toroid - so I think I will remove the the standoffs and remove the PCB from the heat sink and desolder it from the back side (non component) side. Is this what you would do? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
