Re: [Elecraft] (Mini)P3 v SubRX
I apologize ...but sent the wrong link in previous email. This is the link to show monitoring the K1N pileup with KRX3 and P3: https://vimeo.com/119076467 Don, N5LZ -Original Message- From: Don Butler [mailto:n...@comcast.net] Sent: Tuesday, March 10, 2015 12:26 PM To: 'Nick - VE3EY'; 'Rick WA6NHC' Cc: 'Elecraft' Subject: RE: [Elecraft] (Mini)P3 v SubRX I find both the K3 subreceiver and P3 very helpful in cracking DX pileups. Without the subreceiver it's really not that big of a deal to toggle back and forth between VFOs to monitor the pileup, but it's still much better when the subreceiver is available and turned on with a wide filter setting. I find myself watching the pileup much more than listening to it nowadays, so I'd definitely pick the panapter first if I had to choose one option only. I posted a link to a similar video a few weeks ago, but this 10 minute video is different and shows how I was able to continuously find K1N's listening frequency while he was working a 20+ KC wide pileup and when he started getting louder to me I fired up my amp and worked him with just a few calls. Take a Look: https://vimeo.com/119076467/settings Don, N5LZ -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Nick - VE3EY Sent: Tuesday, March 10, 2015 10:46 AM To: Rick WA6NHC Cc: Elecraft Subject: Re: [Elecraft] (Mini)P3 v SubRX // When I'm not traveling, I DX (sometimes I *am* the DX). On this topic, maybe I can hijack the thread but it still pertains the P3 functionality. I also occasionally travel down to Caribbean and operate CQ WW from places. I would love to have the pan-adapter handy when faced with pileups. Here are some possible benefits: - You have a visual picture of how large your pile is and it makes it easier to steer clear from congested areas. - You have a visual picture of your own TX FQ. You will know soon enough once lids start causing trouble on your TX frequency so that evasive actions can be taken. - Sometimes there is another pileup going on below or above your frequency. If the callers trying to work someone else overlap with your own,your rate takes a dive as you find yourself answering folks who are actually not calling you. In my case, P3 is too big (volume-wise) and there is no space to fit it in carry on suitcase along with K3, PSU, Cables, Laptop, Keyer etc. By looking at parts list from P3 manual, perhaps we can significantly shrink the depth of the unit by making the Top, Bottom and Side panels (E100362, E100363, and E100361) shorter if Elecraft would be willing to manufacture and provide such kit. We always have an option to use the hacksaw but it would not look pretty :-) 73, Nick ve3ey On Mon, Mar 9, 2015 at 9:59 PM, Rick WA6NHC happymooseph...@gmail.com wrote: You're preachin to da choir son. Fine job though. K1N was awful for DQRM, lids and untrained idiots. 3G0ZC the next week wasn't quite as bad, nor as rare. E30FB is rough here on the West Coast due to lack of signal strength, conditions and the same crowds. You can't hear, what isn't there. I see that problem cause as twofold: Lack of noobs seeking an Elmer for proper training NOT covered adequately in the classes or tests; Lack of folks willing to become an Elmer to guide the newcomers. That's WAY off topic for here. Putting in perspective and back on topic; the P3 was almost totally useless for K1N, except to watch and measure the height and width of the pileup (there WERE no holes to utilize in that pack). What you said is very true, the subreceiver helped, about as much because of the reasons you stated too. Together however, is still a deadly combination, by watching the (group of) signal(s) on the P3 that the DX is working, quickly tuning the receiver to the most likely being worked and confirming by ear, they allowed me to gain 13 Q's with K1N on a low dipole and some power (it's all in the DX pattern recognition, if they're not purposely avoiding a pattern). The other operating style was simply work the edges of the pileup, don't be in the middle. P3 and KRX3 in 'normal' DX collecting... fish:barrel. They are the sole reason I have 250 'entities' in the log over the last couple years. When I'm not traveling, I DX (sometimes I *am* the DX). Oh yes, the KPA500 helps, a LOT since I'm on a sole dipole. I don't see things improving in the ranks, so anyone looking at the purchase of the K Line should simply keep the budget open ended and collect everything as they can. P3 first (plan on the SVGA card too, your eyes will never improve), then a KRX3, then flesh it out with more. Let's look at your budget too. The P3/SVGA combo costs versus the KRX3 with filters (mine are all filled the same in both, for diversity and to minimize what my failing ears are subjected to when listening in two places). Add in that you'll have to replace the Synth card when you add
[Elecraft] K3_630 meters
Hello all, If you have the new synthesizer board and the General RX bandpass board in your K3 You are able to rx WSPR signals on 630 meters.I will be txing WSPR tonight , running 2 watts ERP , My gnd is wet so will be runninga little less power than normal.Set your dial to 474.2 - data mode and start your WSPR program.You will be surprised what you will hear even with a 80 M dipole. 73 all Ken K5DNL/WG2XXM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] TS-990
My first experience with radios that require computer support was with a Pegasus. I just had to have one. Three months later I just had to sell it because I realized that reliability was compromised when more than one piece of gear was needed for a task that used to be handled by a single piece of gear alone. Not only that, but I could not effectively use my computer for other tasks because it was needed to run the radio. I still use a computer along with my radio for ham related activities but I sleep better knowing I can still engage in ham related activities when my computer gets sick. Computers tend to get sick more often than radios. At least that has been my experience. Besides,I don't want to give up complete control of my radio to a computer. Scott Manthe wrote: The difference, of course, is that a computer is not REQUIRED to use a K3. The Flex will not function at all without the computer, so the comments about the Flex being dependent on computer hardware are hardly nonsense. 73, Scott, N9AA On 3/10/15 10:45 AM, Wes (N7WS) wrote: First a disclaimer: I don't own a Flex radio (and it is a radio) The closest I've come is using an LP Pan on the i-f output of a K3, which I do own. But this argument is simply nonsense. If the radio breaks---they actually do you know---you're (note spelling) off the air too. And try as I might, I can't see Internet spots on my K3, nor can I use it to keep my banking records, write email, do antenna modeling, etc. For this I still need a computer. And believe it or not, that same computer is connected to my K3 and I would be lost without it. I don't want to go back to my BC-342 and crystal-controlled 6L6, which some still think are the only real radios. Time marches on...try to keep up. Wes N7WS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 bs...@k5dkz.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] TS-990 (Don Wilhelm)
Guys - I have now closed this thread twice. We are way past the threshold for too many posts on a single topic. Thread closed - really! 73, Eric List moderator elecraft.com On 3/11/2015 8:05 AM, Doug Ellmore wrote: Don, Isn't that the nice thing about Amateur Radio, *different strokes for different folks. **And as our knowledge expands, we can try different things or not.* Myself, I really enjoy integrating a lot of operating software tools in my station. But, even with the DX Cluster up in the background, many times I just sit listening to a randow frequency or watching the RF spectrum of my Win4K3 driven scope powered by a K3 or KX3. I can't tell how many times I've been on some random frequency with nothing going on, and then someone pops up and calls CQ or asks if the frequency was in use. Just last night, BD9XE/QRP popped up last night on a random 20m cw frequency and I worked him before he was ever spotted. In this way, I learn about propagation openings, propagation timing, and such. When it comes to radios, the thing that excites me about the K3 and KX3 rigs are that you can operate using knobs or software. The Elecraft K3 and KX3 rigs gives you the best of many worlds...and over time the gear keeps getting better. *Back to different strokes for different folks*...A radio buddy, K3FK was asked by a reporter at our Field Day event in 2013, and I paraphrase, what is it about ham radio that interests him, he answered what is it about catch and release fishing that attracts people? Doug NA1DX -- Message: 1 Date: Tue, 10 Mar 2015 19:35:26 -0400 From: Don Wilhelm w3...@embarqmail.com To: elecraft@mailman.qth.net Subject: Re: [Elecraft] TS-990 Message-ID: 54ff7fbe.40...@embarqmail.com Content-Type: text/plain; charset=windows-1252; format=flowed I am old school. Yes, I have a 6 core AMD computer with 8GB of memory dedicated to the ham station, but I do not use it a lot for rig control - its main use right now is to give me a panadapter display, but that part will soon be replaced by a P3. I still paper log, and automated spots do not excite me - I can bring up the spots on the computer and then dial the K3 to that frequency should I be so inclined. It causes me to think about what I am doing in the hamshack. Those hams who arbitrarily click on spots do not excite me. I prefer to hear the DX first rather than just transmitting without regard to others just because a spot says there is something of interest at that frequency. In other words, if you can't hear them, don't transmit - the ham bands would be much more sane if everyone did likewise. Just my not so humble opinion. 73, Don W3FPR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 elist_c...@elecraft.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] (Mini)P3 v SubRX
Lyle, KK7P, demoed a pre-production P3 to our DX club. When I picked it up I told him Elecraft better put a steel plate inside if they wanted to get that much money for so little weight. On 3/10/2015 10:06 AM, Jim Brown wrote: K6XX used the void space in the P3 to carry hand tools to WRTC in Russia. 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] A datapoint comparing old vs new synthesizer
A simple question : the new synthesizer uses a DDS? If yes what is the type? 73 Giuliano I0CG Italy K1,K2,K3+P3 Message: 18 Date: Tue, 10 Mar 2015 15:54:24 - From: Dave Oleank1...@metrocast.net To: Elecraft Reflectorelecraft@mailman.qth.net Subject: [Elecraft] A datapoint comparing old vs new synthesizer boards. Message-ID: 3AE5C8AA7D6B4DF2A2932520B75DCF21@t30ce0d73e1b34 Content-Type: text/plain; charset=iso-8859-1 I recently got a new K3 and it was one of the first units supplied with the new and improved synthesizer board. In reading a few comments on the reflector, a number of people wanted to know if anyone could detect any difference between the old and the new. I also have some older K3s and decided to compare one of them head to head with the new one on ten meter CW using a 500 Hz bandwidth and check for MDS. I used the line out jack and an HP AC VTVM and 8640B signal generator. Here is what I found: K3 #8858 no preamp-137 dBm new synthesizer board preamp ON -139 dBm new synthesizer board K3 #1504 no preamp -134.5 dBm old synthesizer board preamp ON -137 dBm old synthesizer board I also ordered a pair of synth boards for one of my old K3s on March 1, but it will be awhile before it gets here I guess. I ordered a P3 kit with it and included comments that I was in no rush for the P3 so ship it all together. From the comments I have seen on how many have been ordered, I might be waiting a long time for the P3!! At my age, I'll probably forget about the order in another week or so. When it shows up, I'll wonder what it is and who ordered it!! The plan is to put new synth boards into #1504 and then I can check MDS again to see how it looks. From my checking, it looks like the newer K3 is almost 3 dB better than the older one at least as far as minimum discernable signals go. The new board definitely makes a difference, and my result tracks reasonably well with what what others have found. Dave K1WHS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] TS-990 (Don Wilhelm)
Don, Isn't that the nice thing about Amateur Radio, *different strokes for different folks. **And as our knowledge expands, we can try different things or not.* Myself, I really enjoy integrating a lot of operating software tools in my station. But, even with the DX Cluster up in the background, many times I just sit listening to a randow frequency or watching the RF spectrum of my Win4K3 driven scope powered by a K3 or KX3. I can't tell how many times I've been on some random frequency with nothing going on, and then someone pops up and calls CQ or asks if the frequency was in use. Just last night, BD9XE/QRP popped up last night on a random 20m cw frequency and I worked him before he was ever spotted. In this way, I learn about propagation openings, propagation timing, and such. When it comes to radios, the thing that excites me about the K3 and KX3 rigs are that you can operate using knobs or software. The Elecraft K3 and KX3 rigs gives you the best of many worlds...and over time the gear keeps getting better. *Back to different strokes for different folks*...A radio buddy, K3FK was asked by a reporter at our Field Day event in 2013, and I paraphrase, what is it about ham radio that interests him, he answered what is it about catch and release fishing that attracts people? Doug NA1DX -- Message: 1 Date: Tue, 10 Mar 2015 19:35:26 -0400 From: Don Wilhelm w3...@embarqmail.com To: elecraft@mailman.qth.net Subject: Re: [Elecraft] TS-990 Message-ID: 54ff7fbe.40...@embarqmail.com Content-Type: text/plain; charset=windows-1252; format=flowed I am old school. Yes, I have a 6 core AMD computer with 8GB of memory dedicated to the ham station, but I do not use it a lot for rig control - its main use right now is to give me a panadapter display, but that part will soon be replaced by a P3. I still paper log, and automated spots do not excite me - I can bring up the spots on the computer and then dial the K3 to that frequency should I be so inclined. It causes me to think about what I am doing in the hamshack. Those hams who arbitrarily click on spots do not excite me. I prefer to hear the DX first rather than just transmitting without regard to others just because a spot says there is something of interest at that frequency. In other words, if you can't hear them, don't transmit - the ham bands would be much more sane if everyone did likewise. Just my not so humble opinion. 73, Don W3FPR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Subject: Computers In The Shack
In the shack right now, not counting any processor that is in the Elecraft rigs: 1. Macbook Pro laptop 17 inch screen duo core, 8 GB Ram. 2. iMac 24, quad core, 16 GB Ram. 3. Sony Vaio laptop, Linux, in the closet, has not been on in more than six months. 4. One Raspberry Pi model B. 5. One Arduino Uno 6. One PIC Microprocessor 7. One iPad, 3rd generation. 8. One iPhone 4s (yes, time for an upgrade to iPhone 6). 9. One HP-42S Scientific Programmable Calculator. 10. One HP-35x Scientific Programmable Calculator. 11. One TI-30X IIS Scientific/Engineering Calculator. 12. One HP 16-C Computer Programmer's Calculator. In other rooms of the house... 13. Apple TV (running iOS 8). 14. iMac 27 quad core (XYL's computer) 15. XYL's iPad 4th generation 16. XYL's iPhone 4s (yes, upgrade needed). 73, phil, K7PEH On Mar 11, 2015, at 11:38 AM, Phil Wheeler w...@socal.rr.com wrote: Five in total (Two Macs, three PCs). The Macs both will boot OS X, Win 7 or Ubuntu Linux -- one will even boot two versions of OS X at any time, one working and one beta. One Mac in the house (MacBook Air) and one PC (long-in-the-tooth, circa 2008, Dell running Win 7). One Mac in the shack (MacBook Pro), one tiny 10.1 HP notebook running Win 8.1 (used mostly for PSK31 and such) and one newer Dell PC in the shack running Win 7. The two desktop Dell PCs are prized for their fast optical drives (Blu-Ray in one) so I can rip and burn optical disks; the two Macs have only slow usb optical drives. Even with three computers in the shack I seem to still be old school ala Don Wilhelm :-) 73, Phil W7OX On 3/11/15 11:12 AM, Edward R Cole wrote: Hmm, another survey? I have had up to four computers in the shack, but run two (mainly). I Dell duo-core P4 2.33G with 2GB memory XP32 which is always connected to the K3 serial port and does all the digital mode work. I Dell Inspiron with win8.1 always connected to the SDR-IQ but gets very irregular use. I have an old P90 win95 IBM thinkpad for running an old packet program or a CW key program (but not getting much use these days - Keep for any legacy DOS sw). At some point we will disconnect the duo-core P4 from the internet and e-mail will go to the win8.1 machine (Hopefully win10 will be with us by then). I will have to get fm downloads from the laptop at that point. Or maybe by then we will replace the laptop (2009 purchase). My wife bought a new Dell with win7 this past year and is chomping for a new desktop (her's is same genre as my desktop which she never uses). I told her to wait till win10 is available. She also has a ipad-3 which is in constant use. I have no idea why she needs a desktop. 73, Ed - KL7UW http://www.kl7uw.com Kits made by KL7UW Dubus Mag business: dubus...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to phys...@mac.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] Subject: Computers In The Shack
latest machine is a Lenovo TS-140 server, really cheap at £220 after cashback. Added a SSD drive to boot from £100 Better sound card for data modes - Creative SB -Z £40 (ebay) extra ram (20GB - 2*8 and 1*4GB £140 Ebay) Dual band wifi card (£30 Amazon) Running win 7 Pro x64 27 monitor - thinking of adding another one.. So that's now a beast quad core Xeon 3G, 24GB ram, 240GB SSD +500GB data for not a lot of ££ I remote that PC with teamviewer, IP sound, Skype, RDP from my ex-corporate laptop.. I use input director when in the shack so can control the server from the laptop HP Elitebook 8540W, 32GB ram, Quad core i7 (old but fast), 250GB SSD + 1TB spindle.. Win 7 Pro x64 Robin G1MHU __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Noise Power Ratio and the K3 with new synthesizer?
Adam Farson VA7OJ has an article in the current March/April 2015 QEX discussing the use of Noise Power Ratio (NPR) to help define a receiver's performance in a crowded band in a way that might be more illuminating than the simpler two tone tests. Its an interesting discussion which makes some sense, but then I'm not anywhere close to an expert in that field. In any event, he has figures from a number of transceivers, including a couple of K3s which no doubt do not have the new synthesizer. The K3s still performed very well relative the the rest of the field in these tests, though they were slightly behind the IC-7700, IC-7800, and TS-590S. Which of course makes me wonder how the K3 with new synthesizer would perform in this arena? From a guy with a mild metrology addiction... 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] A datapoint comparing old vs new synthesizer
Hi, One subject I haven't seen touched is the somewhat subjective does it feel like an analog VFO (with the 10Hz tuning step) like the old synthesizer? Technically that means fast settling, no overshoots, no skipped steps or resorting to a higher tuning step even when tuning fast. I have never had any problem with this in a real ham radio (IC-718, IC-7200, K3), but my portable Eton E1 is terrible in this regard. It's only use is to walk the street or take in the car for noise hunting. BTW it would be nice to see at least a block diagram identifying the major ICs used. AB2TC - Knut wayne burdick wrote The new synth uses a hybrid DDS-PLL architecture running at a very high frequency. Many newer transceivers use a DDS only. The PLL is critical to low-noise (low-jitter) performance. The DDS-PLL subsystem is locked to the 49.380-MHz reference to within a small fraction of a Hz over the entire tuning range. 73, Wayne N6KR snip -- View this message in context: http://elecraft.365791.n2.nabble.com/Re-A-datapoint-comparing-old-vs-new-synthesizer-tp7600090p7600150.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] WTB: K3 with/or without K3SVGA video adapter
Have posted on some classified sites, but all I get are scammers. If you have one, have decided it¹s not for you, or simply not neededI¹d like to talk to you about it. Let me know what you have, and your price. Thanks, Contact via n...@arrl.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Noise Power Ratio and the K3 with new synthesizer?
Thanks Joe for the highlights. Should I pass this to Adam and give him a chance to explain? 73 Johnny VR2XMC 寄件人︰ Joe Subich, W4TV li...@subich.com 收件人︰ elecraft@mailman.qth.net 傳送日期︰ 2015年03月13日 (週五) 10:09 AM 主題︰ Re: [Elecraft] Noise Power Ratio and the K3 with new synthesizer? Anyway, just let us read both Rob Sherwood and Adam's test data and use them as a cross reference to each other. The issue is that Adam's data is flawed in at least two ways. The notch is wider than the SSB filter which means the noise is not being applied to the product detector or DSP ADC. Second by reducing the noise level for DDC receivers, they are not being fairly tested for the same level of total noise power. There are also questions about the effects of roofing filters of different bandwidth - to what degree do they change the total noise power applied to the entire receiver chain (including the product detector or DSP ADC)? Secondly, what are the effects of AGC ahead of the product detector/DSP ADC and does the noise power testing really measure dynamic range or is MDS compromised by the AGC? With a 3.3 KHz notch, the only way Adam can fairly test receivers is with a 6 or 15 KHz roofing filter. If he truly expects to test SSB performance, the notch width needs to be less than half the width of the SSB filter. Secondly, receiver MDS needs to be measured with the noise present to rule out AGC desensitization. BTW, Adam's MDS measurements for the two K3s he tested are off by 6 to 9 dB compared to both Sherwood and ARRL Labs while his MDS values for Icom are within 2 dB of ARRL Labs. There is something very unequal about the testing of the K3. 73, ... Joe, W4TV On 2015-03-12 9:26 PM, Johnny Siu wrote: Hello Scott, I am afraid I do not agree to your comments. I am a owner of both Icom and entire K-line, I understand what Adam AB4OJ is doing. Adam knows the design and structure of K3 no worse than any radio expert here (or at least far better than me). Anyway, just let us read both Rob Sherwood and Adam's test data and use them as a cross reference to each other. I don't mind reading articles from different angles. While there are many CW guru here, voice mode is still the most popular mode across the HF users. Some tests under voice mode conditions do give another view. I think we just keep our fingers crossed and see what are the results for IC7851 and K3 new synthesizer model perform in both Adam and Sherwood test. By the way, both Rob and Adam know each other and do have the chance to communicate. 73 Johnny VR2XMC 寄件人︰ Scott Manthe scott.man...@gmail.com 收件人︰ elecraft@mailman.qth.net 傳送日期︰ 2015年03月13日 (週五) 2:08 AM 主題︰ Re: [Elecraft] Noise Power Ratio and the K3 with new synthesizer? I suspect that the Noise Power Ratio test was used because that is the only test that Adam could use to get his beloved Icom gear near the top of the list. Mr. Farson has had a website devoted to Icom gear for many years, so I'm not sure if this test could be considered even remotely objective. Here is a NPR tutorial from another source, for those interested and technically proficient enough to investigate further. 73, Scott, N9AA On 3/12/15 10:53 AM, Chip Stratton wrote: Adam Farson VA7OJ has an article in the current March/April 2015 QEX discussing the use of Noise Power Ratio (NPR) to help define a receiver's performance in a crowded band in a way that might be more illuminating than the simpler two tone tests. Its an interesting discussion which makes some sense, but then I'm not anywhere close to an expert in that field. In any event, he has figures from a number of transceivers, including a couple of K3s which no doubt do not have the new synthesizer. The K3s still performed very well relative the the rest of the field in these tests, though they were slightly behind the IC-7700, IC-7800, and TS-590S. Which of course makes me wonder how the K3 with new synthesizer would perform in this arena? From a guy with a mild metrology addiction... 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 Message delivered to vr2...@yahoo.com.hk __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 li...@subich.com __ Elecraft mailing list Home:
[Elecraft] K3 Receive De-sense Problem
For the past few months, I have had intermittent receive de-sense with my K3/100-F, Serial 1523. Firmware 5.14, 2.13, 1.19 installed this week, but de-sense was there with previous firmware. Intermittently receive sensitivity will drop about ten dB. Usually happens after transmitting, but sometimes happens spontaneously with no transmitting. A dit usually restores sensitivity. If I don't dit, sensitivity randomly restores itself. CW, SSB, RTTY. All contest bands. (Don't do WARC.) I have one-by-one eliminated my BCD antenna-switches, my ACOM amplifier, and my antenna/dummy load switch. With these items in or out of line, I still get intermittent de-sense. Which leads me to believe the problem is with the K3 itself. (It could be one of my coax patch cables, but I suspect not.) KXV3 installed, but use ANT1. SUB installed. Intermittent de-sense with and without SUB engaged. Suggestions? 73, Hank, W6SX __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Noise Power Ratio and the K3 with new synthesizer?
Anyway, just let us read both Rob Sherwood and Adam's test data and use them as a cross reference to each other. The issue is that Adam's data is flawed in at least two ways. The notch is wider than the SSB filter which means the noise is not being applied to the product detector or DSP ADC. Second by reducing the noise level for DDC receivers, they are not being fairly tested for the same level of total noise power. There are also questions about the effects of roofing filters of different bandwidth - to what degree do they change the total noise power applied to the entire receiver chain (including the product detector or DSP ADC)? Secondly, what are the effects of AGC ahead of the product detector/DSP ADC and does the noise power testing really measure dynamic range or is MDS compromised by the AGC? With a 3.3 KHz notch, the only way Adam can fairly test receivers is with a 6 or 15 KHz roofing filter. If he truly expects to test SSB performance, the notch width needs to be less than half the width of the SSB filter. Secondly, receiver MDS needs to be measured with the noise present to rule out AGC desensitization. BTW, Adam's MDS measurements for the two K3s he tested are off by 6 to 9 dB compared to both Sherwood and ARRL Labs while his MDS values for Icom are within 2 dB of ARRL Labs. There is something very unequal about the testing of the K3. 73, ... Joe, W4TV On 2015-03-12 9:26 PM, Johnny Siu wrote: Hello Scott, I am afraid I do not agree to your comments. I am a owner of both Icom and entire K-line, I understand what Adam AB4OJ is doing. Adam knows the design and structure of K3 no worse than any radio expert here (or at least far better than me). Anyway, just let us read both Rob Sherwood and Adam's test data and use them as a cross reference to each other. I don't mind reading articles from different angles. While there are many CW guru here, voice mode is still the most popular mode across the HF users. Some tests under voice mode conditions do give another view. I think we just keep our fingers crossed and see what are the results for IC7851 and K3 new synthesizer model perform in both Adam and Sherwood test. By the way, both Rob and Adam know each other and do have the chance to communicate. 73 Johnny VR2XMC 寄件人︰ Scott Manthe scott.man...@gmail.com 收件人︰ elecraft@mailman.qth.net 傳送日期︰ 2015年03月13日 (週五) 2:08 AM 主題︰ Re: [Elecraft] Noise Power Ratio and the K3 with new synthesizer? I suspect that the Noise Power Ratio test was used because that is the only test that Adam could use to get his beloved Icom gear near the top of the list. Mr. Farson has had a website devoted to Icom gear for many years, so I'm not sure if this test could be considered even remotely objective. Here is a NPR tutorial from another source, for those interested and technically proficient enough to investigate further. 73, Scott, N9AA On 3/12/15 10:53 AM, Chip Stratton wrote: Adam Farson VA7OJ has an article in the current March/April 2015 QEX discussing the use of Noise Power Ratio (NPR) to help define a receiver's performance in a crowded band in a way that might be more illuminating than the simpler two tone tests. Its an interesting discussion which makes some sense, but then I'm not anywhere close to an expert in that field. In any event, he has figures from a number of transceivers, including a couple of K3s which no doubt do not have the new synthesizer. The K3s still performed very well relative the the rest of the field in these tests, though they were slightly behind the IC-7700, IC-7800, and TS-590S. Which of course makes me wonder how the K3 with new synthesizer would perform in this arena? From a guy with a mild metrology addiction... 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 Message delivered to vr2...@yahoo.com.hk __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 li...@subich.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] WTB: P3 with/without K3SVGA video board
Sorry for confusion, I managed to type ³K3² instead of correct ³P3² in previous email. One sharp eyed subscriber caught it, so hoping I can minimize confusion I am looking for a P3 with or without the K3SVGA video board. Gotta stop emails in the eveningtoo full of errors. 73, NS6V, Paul __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Sluggish Encoders
That is what support just told me too. Sounds like a bad batch of encoders to me. I may change them out when I get my new synthesizers. Mike W0MU On 3/12/2015 9:45 PM, Alan Sewell wrote: I had the same problem with my CMP / PWR encoder for several years. I finally replaced all four of the push button encoders last November. I wrote up what I did at http://www.n5na.net/s9y/. 73, Alan N5NA Date: Thu, 12 Mar 2015 12:34:43 -0700 From: Dennis W0JX via Elecraft elecraft@mailman.qth.net To: Elecraft@mailman.qth.net Subject: Re: [Elecraft] Sluggish Encoders Message-ID: 142613.37643.yahoomailba...@web162601.mail.bf1.yahoo.com Content-Type: text/plain; charset=us-ascii My K3 also has been having trouble with sluggish encoders. The worst one is keyer speed. Sometimes (not always) turning the speed control doesn't change the speed. The power control takes FOREVER to move from 100 watts down to 50 or less. My shift control is jumpy at times but width seems to be OK. Since the speed and shift controls are not always problematic, I suspect a software conflict. 73, Dennis K3 #3481 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 w...@w0mu.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 Receive De-sense Problem
Hank, check the grounding of the SO239's. I believe the path is through some hardware. Also don't absolve the patch cables too quickly. On 13 Mar 2015 06:30, Hank Garretson wrote: For the past few months, I have had intermittent receive de-sense with my K3/100-F, Serial 1523. Firmware 5.14, 2.13, 1.19 installed this week, but de-sense was there with previous firmware. Intermittently receive sensitivity will drop about ten dB. Usually happens after transmitting, but sometimes happens spontaneously with no transmitting. A dit usually restores sensitivity. If I don't dit, sensitivity randomly restores itself. CW, SSB, RTTY. All contest bands. (Don't do WARC.) I have one-by-one eliminated my BCD antenna-switches, my ACOM amplifier, and my antenna/dummy load switch. With these items in or out of line, I still get intermittent de-sense. Which leads me to believe the problem is with the K3 itself. (It could be one of my coax patch cables, but I suspect not.) KXV3 installed, but use ANT1. SUB installed. Intermittent de-sense with and without SUB engaged. Suggestions? 73, Hank, W6SX -- 73, Vic, 4X6GP/K2VCO Rehovot, Israel http://www.qsl.net/k2vco/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Sluggish Encoders
I had the same problem with my CMP / PWR encoder for several years. I finally replaced all four of the push button encoders last November. I wrote up what I did at http://www.n5na.net/s9y/. 73, Alan N5NA Date: Thu, 12 Mar 2015 12:34:43 -0700 From: Dennis W0JX via Elecraft elecraft@mailman.qth.net To: Elecraft@mailman.qth.net Subject: Re: [Elecraft] Sluggish Encoders Message-ID: 142613.37643.yahoomailba...@web162601.mail.bf1.yahoo.com Content-Type: text/plain; charset=us-ascii My K3 also has been having trouble with sluggish encoders. The worst one is keyer speed. Sometimes (not always) turning the speed control doesn't change the speed. The power control takes FOREVER to move from 100 watts down to 50 or less. My shift control is jumpy at times but width seems to be OK. Since the speed and shift controls are not always problematic, I suspect a software conflict. 73, Dennis K3 #3481 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] A datapoint comparing old vs new synthesizer
Knut, if you're asking about the K3 with the new synthesizer in 'does it feel like an analog VFO (with the 10Hz tuning step) like the old synthesizer?', I don't notice any change in the feel of tuning the radio. Phil W7OX On 3/12/15 7:36 AM, ab2tc wrote: Hi, One subject I haven't seen touched is the somewhat subjective does it feel like an analog VFO (with the 10Hz tuning step) like the old synthesizer? Technically that means fast settling, no overshoots, no skipped steps or resorting to a higher tuning step even when tuning fast. I have never had any problem with this in a real ham radio (IC-718, IC-7200, K3), but my portable Eton E1 is terrible in this regard. It's only use is to walk the street or take in the car for noise hunting. BTW it would be nice to see at least a block diagram identifying the major ICs used. AB2TC - Knut wayne burdick wrote The new synth uses a hybrid DDS-PLL architecture running at a very high frequency. Many newer transceivers use a DDS only. The PLL is critical to low-noise (low-jitter) performance. The DDS-PLL subsystem is locked to the 49.380-MHz reference to within a small fraction of a Hz over the entire tuning range. 73, Wayne N6KR snip __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Noise Power Ratio and the K3 with new synthesizer?
I read that article and was hoping Wayne or one of the guru guys would comment . It is probably picking specs out of the pepper , but it seems to me that testing a K3 around 5300 khz means there is essentially no benefit from the ham band bandpass filters the K3 uses - Would like to see those numbers compared for instance with the 3880khz or whatever freq it was with a filter in a ham band. (I am NOT talking about roofing filters) Hank K7HP -Original Message- From: Chip Stratton Sent: Thursday, March 12, 2015 7:53 AM To: Elecraft Reflector Subject: [Elecraft] Noise Power Ratio and the K3 with new synthesizer? Adam Farson VA7OJ has an article in the current March/April 2015 QEX discussing the use of Noise Power Ratio (NPR) to help define a receiver's performance in a crowded band in a way that might be more illuminating than the simpler two tone tests. Its an interesting discussion which makes some sense, but then I'm not anywhere close to an expert in that field. In any event, he has figures from a number of transceivers, including a couple of K3s which no doubt do not have the new synthesizer. The K3s still performed very well relative the the rest of the field in these tests, though they were slightly behind the IC-7700, IC-7800, and TS-590S. Which of course makes me wonder how the K3 with new synthesizer would perform in this arena? From a guy with a mild metrology addiction... 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 Message delivered to pfizenma...@q.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] Noise Power Ratio and the K3 with new synthesizer?
The transceivers near the top of Adam's list are all pretty close in performance; possibly close enough to be indistinguishable in actually use on-air. A K3 with the new synths may have been been better still. 73, Wayne N6KR On Mar 12, 2015, at 7:53 AM, Chip Stratton c...@strattonfamily.us wrote: Adam Farson VA7OJ has an article in the current March/April 2015 QEX discussing the use of Noise Power Ratio (NPR) to help define a receiver's performance in a crowded band in a way that might be more illuminating than the simpler two tone tests. Its an interesting discussion which makes some sense, but then I'm not anywhere close to an expert in that field. In any event, he has figures from a number of transceivers, including a couple of K3s which no doubt do not have the new synthesizer. The K3s still performed very well relative the the rest of the field in these tests, though they were slightly behind the IC-7700, IC-7800, and TS-590S. Which of course makes me wonder how the K3 with new synthesizer would perform in this arena? From a guy with a mild metrology addiction... 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 Message delivered to n...@elecraft.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: Sub receiver goes silent at narrow bandwidth
My first post on this didn't make it to the list due to clerical error on my part, so here is attempt two. The sub-receiver in my K3 is equipped with a 2.7 5 pole filter in position 1, and a 400Hz 8 pole in position 5. All works well until I narrow the bandwidth to 400 Hz, then the sub-receiver goes quiet (the main continues to work normally.) I used the K3 utility to set filter 5 bandwidth both narrower and wider, and wherever it is configured is where the receiver goes quiet. I can't find anything in the archives about this particular problem, but thought I would seek the group collective wisdom before tearing into the radio. Thanks, Chuck Teague, NN7U __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Noise Power Ratio and the K3 with new synthesizer?
Or perhaps the author will update his article, which was outdated at the date of publication :-) Phil W7OX On 3/12/15 9:23 AM, Hank P wrote: I read that article and was hoping Wayne or one of the guru guys would comment . It is probably picking specs out of the pepper , but it seems to me that testing a K3 around 5300 khz means there is essentially no benefit from the ham band bandpass filters the K3 uses - Would like to see those numbers compared for instance with the 3880khz or whatever freq it was with a filter in a ham band. (I am NOT talking about roofing filters) Hank K7HP -Original Message- From: Chip Stratton Sent: Thursday, March 12, 2015 7:53 AM To: Elecraft Reflector Subject: [Elecraft] Noise Power Ratio and the K3 with new synthesizer? Adam Farson VA7OJ has an article in the current March/April 2015 QEX discussing the use of Noise Power Ratio (NPR) to help define a receiver's performance in a crowded band in a way that might be more illuminating than the simpler two tone tests. Its an interesting discussion which makes some sense, but then I'm not anywhere close to an expert in that field. In any event, he has figures from a number of transceivers, including a couple of K3s which no doubt do not have the new synthesizer. The K3s still performed very well relative the the rest of the field in these tests, though they were slightly behind the IC-7700, IC-7800, and TS-590S. Which of course makes me wonder how the K3 with new synthesizer would perform in this arena? From a guy with a mild metrology addiction... 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise Power Ratio and the K3 with new synthesizer?
VA7OJ is highly biased toward ICOM gear. For the record, I am highly biased towards Elecraft gear. I am sure we both have our reasons. Jim W6AIM -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Wayne Burdick Sent: Thursday, March 12, 2015 9:28 AM To: Chip Stratton Cc: Elecraft Reflector Subject: Re: [Elecraft] Noise Power Ratio and the K3 with new synthesizer? The transceivers near the top of Adam's list are all pretty close in performance; possibly close enough to be indistinguishable in actually use on-air. A K3 with the new synths may have been been better still. 73, Wayne N6KR On Mar 12, 2015, at 7:53 AM, Chip Stratton c...@strattonfamily.us wrote: Adam Farson VA7OJ has an article in the current March/April 2015 QEX discussing the use of Noise Power Ratio (NPR) to help define a receiver's performance in a crowded band in a way that might be more illuminating than the simpler two tone tests. Its an interesting discussion which makes some sense, but then I'm not anywhere close to an expert in that field. In any event, he has figures from a number of transceivers, including a couple of K3s which no doubt do not have the new synthesizer. The K3s still performed very well relative the the rest of the field in these tests, though they were slightly behind the IC-7700, IC-7800, and TS-590S. Which of course makes me wonder how the K3 with new synthesizer would perform in this arena? From a guy with a mild metrology addiction... 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 Message delivered to n...@elecraft.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 jbol...@outlook.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
I want to thank AB3AP for the K2 parameter program; it is nice to be able to record all the settings on my K2. I found one thing that maybe of interest I found when I ran it if the real time clock is on it takes about 3 minutes to run vs. the real time clock off it takes about 2 minutes 15 seconds. While the time difference is insignificant, the advantage of running with the real time clock is you do not get all the time print out. You do have to hit the menu button, after you run the parameter program with the real time clock off after the program says Done. On a different note, I can run the program fine from the web site, but I need directions on how to run the program off line. Could someone contact me off line and lead me step by step how to run the program off line. I am sure the reason I cannot get it to run off line is something simple. Thanks Steve K4JPN www.thewinstonator.com/K4JPN.htm __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3: Sub receiver goes silent at narrow bandwidth
Hi Wayne, No new synth. I first noticed the problem when using diversity, but it persists when the receivers are separated. I'm thinking it is probably a construction or installation problem and wanted to know if there are known errors that would cause this. NN7U -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Sub-receiver-goes-silent-at-narrow-bandwidth-tp7600154p7600157.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] KX-1 - cleaning up the squarewave sidetone?
I did not want to reinvent the wheel, and hoped some mods existed to clean up the KX-1 sidetone. At times, I find it difficult to zero in on a station's 600-hz with my 600 hz squarewave. Has someone come up with a mod? I'm thinking that plenty of audio is available at the sidetone level setting (STL), so it might be possible to make an RC filter. It looks like the sidetone enters AF amp via a 1M resistor, R15, to IN1 and IN2 Thanks __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] OT: CTCSS tones for repeaters
One additional note. When repeaters send CTCSS tones, many radios depend on the poor low frequency performance of small speakers to suppress the audio tone. This approach fails when using a car audio system to get enough volume to overcome wind noise etc. Having a fairly steep rolloff below 300 Hz available would help with this situation. 73 Bill AE6JV --- Bill Frantz| The only thing we have to | Periwinkle (408)356-8506 | fear is fear itself. - FDR | 16345 Englewood Ave www.pwpconsult.com | Inaugural address, 3/4/1933 | Los Gatos, CA 95032 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Need help with stand for K1
Elecraft no longer sells the little metal stand for the K1. Can someone please send me the dimensions of the stand so I can see if I can fabricate one? 72, George, K4EOR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] KX-1 - cleaning up the squarewave sidetone?
Wayne will be happy that the KX1 sounds better than a rotary spark gap :-) 73, Phil W7OX On 3/12/15 1:21 PM, Rick Dettinger wrote: I have used an outboard audio filter to clean up square wave sidetones, like on my K1. Worked well. I remember when the modes came out to do this to the K2 sidetone. However, listen to an old spark audio file. After that, everything sounds good. Spark sounds like what you might expect a 5KW damped arc to sound like in a receiver. 73, Rick Dettinger K7MW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] OT: CTCSS tones for repeaters
On Thu,3/12/2015 10:13 AM, Bill Frantz wrote: Having a fairly steep rolloff below 300 Hz available would help with this situation. This should be easy with RXEQ. It's also good practice to roll off the lows on FM TX for the same reason it's good on the HF bands. While the lows don't burn more power with FM, they do use up deviation that would better served by voice range, so the practical effect is the same. 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 Message delivered to arch...@mail-archive.com
[Elecraft] PX3 Stand
I bought the SOTAbeams low rider stand for my KX3 and when I got the PX3 I inquired with Richard G3CWI if one would become available. I ended up sending him measurements and he is now offering the stand. Matches the KX3 stand perfectly. Thought I would mention this if anyone is interested. Here's the link, http://www.sotabeams.co.uk/px3-low-rider-radio-stand/ 73, Keith, N4KDJ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] (Mini)P3 v SubRX
I sure would like to see a shrunken P3 when I head to the islands too. Maybe a kit with panels shorter ribbon cable? 73, N2TK, Tony -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Nick - VE3EY Sent: Tuesday, March 10, 2015 12:46 PM To: Rick WA6NHC Cc: Elecraft Subject: Re: [Elecraft] (Mini)P3 v SubRX // When I'm not traveling, I DX (sometimes I *am* the DX). On this topic, maybe I can hijack the thread but it still pertains the P3 functionality. I also occasionally travel down to Caribbean and operate CQ WW from places. I would love to have the pan-adapter handy when faced with pileups. Here are some possible benefits: - You have a visual picture of how large your pile is and it makes it easier to steer clear from congested areas. - You have a visual picture of your own TX FQ. You will know soon enough once lids start causing trouble on your TX frequency so that evasive actions can be taken. - Sometimes there is another pileup going on below or above your frequency. If the callers trying to work someone else overlap with your own,your rate takes a dive as you find yourself answering folks who are actually not calling you. In my case, P3 is too big (volume-wise) and there is no space to fit it in carry on suitcase along with K3, PSU, Cables, Laptop, Keyer etc. By looking at parts list from P3 manual, perhaps we can significantly shrink the depth of the unit by making the Top, Bottom and Side panels (E100362, E100363, and E100361) shorter if Elecraft would be willing to manufacture and provide such kit. We always have an option to use the hacksaw but it would not look pretty :-) 73, Nick ve3ey On Mon, Mar 9, 2015 at 9:59 PM, Rick WA6NHC happymooseph...@gmail.com wrote: You're preachin to da choir son. Fine job though. K1N was awful for DQRM, lids and untrained idiots. 3G0ZC the next week wasn't quite as bad, nor as rare. E30FB is rough here on the West Coast due to lack of signal strength, conditions and the same crowds. You can't hear, what isn't there. I see that problem cause as twofold: Lack of noobs seeking an Elmer for proper training NOT covered adequately in the classes or tests; Lack of folks willing to become an Elmer to guide the newcomers. That's WAY off topic for here. Putting in perspective and back on topic; the P3 was almost totally useless for K1N, except to watch and measure the height and width of the pileup (there WERE no holes to utilize in that pack). What you said is very true, the subreceiver helped, about as much because of the reasons you stated too. Together however, is still a deadly combination, by watching the (group of) signal(s) on the P3 that the DX is working, quickly tuning the receiver to the most likely being worked and confirming by ear, they allowed me to gain 13 Q's with K1N on a low dipole and some power (it's all in the DX pattern recognition, if they're not purposely avoiding a pattern). The other operating style was simply work the edges of the pileup, don't be in the middle. P3 and KRX3 in 'normal' DX collecting... fish:barrel. They are the sole reason I have 250 'entities' in the log over the last couple years. When I'm not traveling, I DX (sometimes I *am* the DX). Oh yes, the KPA500 helps, a LOT since I'm on a sole dipole. I don't see things improving in the ranks, so anyone looking at the purchase of the K Line should simply keep the budget open ended and collect everything as they can. P3 first (plan on the SVGA card too, your eyes will never improve), then a KRX3, then flesh it out with more. Let's look at your budget too. The P3/SVGA combo costs versus the KRX3 with filters (mine are all filled the same in both, for diversity and to minimize what my failing ears are subjected to when listening in two places). Add in that you'll have to replace the Synth card when you add the KRX3 (or obtain two used ones, storing the new one for later, but why) and I suspect that financially as well, the P3/SVGA will be more reachable first. That's my best reasoning for the P3 and why it should be first. It's the better of the two choices and it's more financially obtainable. Whatever you choose, good luck and good hunting. Rick wa6nhc On 3/9/2015 6:02 PM, Randy Farmer wrote: I would agree that the P3 should probably take priority over the Subreceiver for a new buy, mostly due to the many different things it can do for you. But... my experience this weekend trying to work E30FB on 20 CW sure made me glad I had the Sub. I would never have worked them using just the scope. Problem is, it seems the way people try to work DX these days makes it virtually impossible to depend on a visual cue to know who's being worked by the DX if there's a pileup of any size at all. E30FB had the pile spread out for better than 20 kHz, and the scope showed a constant morass of signals all across the entire span.
Re: [Elecraft] K3: Sub receiver goes silent at narrow bandwidth
This could be a bug. Are you using new synths? Diversity mode? Wayne N6KR On Mar 12, 2015, at 9:25 AM, Chuck Teague via Elecraft elecraft@mailman.qth.net wrote: My first post on this didn't make it to the list due to clerical error on my part, so here is attempt two. The sub-receiver in my K3 is equipped with a 2.7 5 pole filter in position 1, and a 400Hz 8 pole in position 5. All works well until I narrow the bandwidth to 400 Hz, then the sub-receiver goes quiet (the main continues to work normally.) I used the K3 utility to set filter 5 bandwidth both narrower and wider, and wherever it is configured is where the receiver goes quiet. I can't find anything in the archives about this particular problem, but thought I would seek the group collective wisdom before tearing into the radio. Thanks, Chuck Teague, NN7U __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to n...@elecraft.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] Sluggish Encoders
My K3 also has been having trouble with sluggish encoders. The worst one is keyer speed. Sometimes (not always) turning the speed control doesn't change the speed. The power control takes FOREVER to move from 100 watts down to 50 or less. My shift control is jumpy at times but width seems to be OK. Since the speed and shift controls are not always problematic, I suspect a software conflict. 73, Dennis K3 #3481 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] KX-1 - cleaning up the squarewave sidetone?
Thanks Phil list- I may get a scope and have a look at the waveform of the ST. 73 Jay W6CJ -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Phil Wheeler Sent: Thursday, March 12, 2015 10:56 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KX-1 - cleaning up the squarewave sidetone? Hmm .. I've never noticed that problem, J. I'll go listen again later today. Phil W7OX On 3/12/15 10:05 AM, J wrote: I did not want to reinvent the wheel, and hoped some mods existed to clean up the KX-1 sidetone. At times, I find it difficult to zero in on a station's 600-hz with my 600 hz squarewave. Has someone come up with a mod? I'm thinking that plenty of audio is available at the sidetone level setting (STL), so it might be possible to make an RC filter. It looks like the sidetone enters AF amp via a 1M resistor, R15, to IN1 and IN2 Thanks __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 tsc...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX-1 - cleaning up the square wave sidetone?
Just feed the square wave through an audio filter will take out most of the harmonics and you will get a pretty decent sine wave tone. 73, Tom - W4BQF -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of J Sent: Thursday, March 12, 2015 4:09 PM To: 'Phil Wheeler'; elecraft@mailman.qth.net Subject: Re: [Elecraft] KX-1 - cleaning up the squarewave sidetone? Thanks Phil list- I may get a scope and have a look at the waveform of the ST. 73 Jay W6CJ -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Phil Wheeler Sent: Thursday, March 12, 2015 10:56 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KX-1 - cleaning up the squarewave sidetone? Hmm .. I've never noticed that problem, J. I'll go listen again later today. Phil W7OX On 3/12/15 10:05 AM, J wrote: I did not want to reinvent the wheel, and hoped some mods existed to clean up the KX-1 sidetone. At times, I find it difficult to zero in on a station's 600-hz with my 600 hz squarewave. Has someone come up with a mod? I'm thinking that plenty of audio is available at the sidetone level setting (STL), so it might be possible to make an RC filter. It looks like the sidetone enters AF amp via a 1M resistor, R15, to IN1 and IN2 Thanks __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 tsc...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to alderm...@windstream.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX-1 - cleaning up the squarewave sidetone?
I have used an outboard audio filter to clean up square wave sidetones, like on my K1. Worked well. I remember when the modes came out to do this to the K2 sidetone. However, listen to an old spark audio file. After that, everything sounds good. Spark sounds like what you might expect a 5KW damped arc to sound like in a receiver. 73, Rick Dettinger K7MW On Mar 12, 2015, at 1:08 PM, J wrote: Thanks Phil list- I may get a scope and have a look at the waveform of the ST. 73 Jay W6CJ -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Phil Wheeler Sent: Thursday, March 12, 2015 10:56 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KX-1 - cleaning up the squarewave sidetone? Hmm .. I've never noticed that problem, J. I'll go listen again later today. Phil W7OX On 3/12/15 10:05 AM, J wrote: I did not want to reinvent the wheel, and hoped some mods existed to clean up the KX-1 sidetone. At times, I find it difficult to zero in on a station's 600-hz with my 600 hz squarewave. Has someone come up with a mod? I'm thinking that plenty of audio is available at the sidetone level setting (STL), so it might be possible to make an RC filter. It looks like the sidetone enters AF amp via a 1M resistor, R15, to IN1 and IN2 Thanks __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 tsc...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k7m...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise Power Ratio and the K3 with new synthesizer?
Very interesting. Given the issue some of us had with muddy signals when there were multiple low level CW signals within a narrow passband, it would be very interesting to see the results of this measurement before and after the firmware change that was supposed to address it, as well as with and without the new synths. Dave AB7E On 3/12/2015 11:45 AM, Scott Manthe wrote: Sorry, here is the link that was supposed to be in my previous email: http://www.lintech.com/PDF/npr_wp.pdf Sorry! 73, Scott N9AA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Noise Power Ratio and the K3 with new synthesizer?
I think it is a little more than that, I think he is blinded by Icom! When I had my IC-7700 he became a real PITA! Tom - W4BQF -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of jim Sent: Thursday, March 12, 2015 1:49 PM To: 'Wayne Burdick'; 'Chip Stratton' Cc: 'Elecraft Reflector' Subject: Re: [Elecraft] Noise Power Ratio and the K3 with new synthesizer? VA7OJ is highly biased toward ICOM gear. For the record, I am highly biased towards Elecraft gear. I am sure we both have our reasons. Jim W6AIM -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Wayne Burdick Sent: Thursday, March 12, 2015 9:28 AM To: Chip Stratton Cc: Elecraft Reflector Subject: Re: [Elecraft] Noise Power Ratio and the K3 with new synthesizer? The transceivers near the top of Adam's list are all pretty close in performance; possibly close enough to be indistinguishable in actually use on-air. A K3 with the new synths may have been been better still. 73, Wayne N6KR On Mar 12, 2015, at 7:53 AM, Chip Stratton c...@strattonfamily.us wrote: Adam Farson VA7OJ has an article in the current March/April 2015 QEX discussing the use of Noise Power Ratio (NPR) to help define a receiver's performance in a crowded band in a way that might be more illuminating than the simpler two tone tests. Its an interesting discussion which makes some sense, but then I'm not anywhere close to an expert in that field. In any event, he has figures from a number of transceivers, including a couple of K3s which no doubt do not have the new synthesizer. The K3s still performed very well relative the the rest of the field in these tests, though they were slightly behind the IC-7700, IC-7800, and TS-590S. Which of course makes me wonder how the K3 with new synthesizer would perform in this arena? From a guy with a mild metrology addiction... 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 Message delivered to n...@elecraft.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 jbol...@outlook.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 alderm...@windstream.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Noise Power Ratio and the K3 with new synthesizer?
Sorry, here is the link that was supposed to be in my previous email: http://www.lintech.com/PDF/npr_wp.pdf Sorry! 73, Scott N9AA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Subject: Computers In The Shack
I didn't think to include my calculator: TI-35plus (so old many keys are rubbed bare of labels - good that I remember what they are). Can I add my Post slide-rule to the list ;-) My log is computerized (its a spreadsheet I manually make entries to - ha!). I have no room to have a logging program running when I do eme - paper and pencil are simple - so is the eraser! Regarding my wife: Her (old duo-core P4 got so slow, I offered to rebuild it for her). But she went and bought a new i7 laptop before I got it rebuilt and that is what she uses. The rebuilt desktop is left turned off. She probably does 70-80% of her time using the ipad-3 (face-time and e-mail, oh and puzzles). Like I said what would she use a new desktop, for? If she gets a new desktop, I will seize the old desktop for doing something (dedicated auto-tracker? making coffee?). She has a Kindle-Fire (I got the old original Kindle - which is used more than she uses the fire). I just went thru FL-digi changing several macros for specific eme scripts. I am going to use it for keyboard CW when doing CW-eme (I verified I could copy CW audibly when the K3 is in DATA-A mode - required by FL-digi). The dusty shelf hold my Pac-Bell P100 40MB win95 and an old Dell desktop (upgraded to 512MB and XP32). Both probably headed to recycle. I'll keep the old IBM thinkpad P90 since it has a working FD drive and add-on DVD. The thinkpads do not radiate any EMI/RFI. 73, Ed - KL7UW http://www.kl7uw.com Kits made by KL7UW Dubus Mag business: dubus...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX-1 - cleaning up the squarewave sidetone?
Hmm .. I've never noticed that problem, J. I'll go listen again later today. Phil W7OX On 3/12/15 10:05 AM, J wrote: I did not want to reinvent the wheel, and hoped some mods existed to clean up the KX-1 sidetone. At times, I find it difficult to zero in on a station's 600-hz with my 600 hz squarewave. Has someone come up with a mod? I'm thinking that plenty of audio is available at the sidetone level setting (STL), so it might be possible to make an RC filter. It looks like the sidetone enters AF amp via a 1M resistor, R15, to IN1 and IN2 Thanks __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Noise Power Ratio and the K3 with new synthesizer?
I suspect that the Noise Power Ratio test was used because that is the only test that Adam could use to get his beloved Icom gear near the top of the list. Mr. Farson has had a website devoted to Icom gear for many years, so I'm not sure if this test could be considered even remotely objective. Here is a NPR tutorial from another source, for those interested and technically proficient enough to investigate further. 73, Scott, N9AA On 3/12/15 10:53 AM, Chip Stratton wrote: Adam Farson VA7OJ has an article in the current March/April 2015 QEX discussing the use of Noise Power Ratio (NPR) to help define a receiver's performance in a crowded band in a way that might be more illuminating than the simpler two tone tests. Its an interesting discussion which makes some sense, but then I'm not anywhere close to an expert in that field. In any event, he has figures from a number of transceivers, including a couple of K3s which no doubt do not have the new synthesizer. The K3s still performed very well relative the the rest of the field in these tests, though they were slightly behind the IC-7700, IC-7800, and TS-590S. Which of course makes me wonder how the K3 with new synthesizer would perform in this arena? From a guy with a mild metrology addiction... 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 Message delivered to arch...@mail-archive.com
[Elecraft] KX3-PX3-KXPA100 problem
Folks, up til today my combination in the subject line has worked flawlessly. Today a couple of problems surfaced. (1) the power switch on the PX3 is intermittent for ON, always works OFF. In other words, it does not always power ON when asked to, but always powers OFF when requested to. Not a big deal, but would be nice to fix... (2) the KXPA100 would not come on; in trying to track it down, I observe that the PA mode in the KX3 was OFF; setting it to ON, the KXPA100 turns on, and the Sys Fault LED flashes, then it turns off the KX3 PA mode and itself OFF. Big deal, and would love to fix it. I have rechecked all the cabling and removed and reinserted it i to no avail. Thoughts or suggestions? Thanks 73 de Dave, W5SV __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] KX3-PX3-KXPA100 problem
Check power connections. Saw something similar when I had a faulty PP conector. -- View this message in context: http://elecraft.365791.n2.nabble.com/KX3-PX3-KXPA100-problem-tp7600178p7600179.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] Noise Power Ratio and the K3 with new synthesizer?
Hello Scott, I am afraid I do not agree to your comments. I am a owner of both Icom and entire K-line, I understand what Adam AB4OJ is doing. Adam knows the design and structure of K3 no worse than any radio expert here (or at least far better than me). Anyway, just let us read both Rob Sherwood and Adam's test data and use them as a cross reference to each other. I don't mind reading articles from different angles. While there are many CW guru here, voice mode is still the most popular mode across the HF users. Some tests under voice mode conditions do give another view. I think we just keep our fingers crossed and see what are the results for IC7851 and K3 new synthesizer model perform in both Adam and Sherwood test. By the way, both Rob and Adam know each other and do have the chance to communicate. 73 Johnny VR2XMC 寄件人︰ Scott Manthe scott.man...@gmail.com 收件人︰ elecraft@mailman.qth.net 傳送日期︰ 2015年03月13日 (週五) 2:08 AM 主題︰ Re: [Elecraft] Noise Power Ratio and the K3 with new synthesizer? I suspect that the Noise Power Ratio test was used because that is the only test that Adam could use to get his beloved Icom gear near the top of the list. Mr. Farson has had a website devoted to Icom gear for many years, so I'm not sure if this test could be considered even remotely objective. Here is a NPR tutorial from another source, for those interested and technically proficient enough to investigate further. 73, Scott, N9AA On 3/12/15 10:53 AM, Chip Stratton wrote: Adam Farson VA7OJ has an article in the current March/April 2015 QEX discussing the use of Noise Power Ratio (NPR) to help define a receiver's performance in a crowded band in a way that might be more illuminating than the simpler two tone tests. Its an interesting discussion which makes some sense, but then I'm not anywhere close to an expert in that field. In any event, he has figures from a number of transceivers, including a couple of K3s which no doubt do not have the new synthesizer. The K3s still performed very well relative the the rest of the field in these tests, though they were slightly behind the IC-7700, IC-7800, and TS-590S. Which of course makes me wonder how the K3 with new synthesizer would perform in this arena? From a guy with a mild metrology addiction... 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 Message delivered to vr2...@yahoo.com.hk __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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
