Re: [Elecraft] K3 DIY DSP Rev D - please elaborate
...so besides the LPF, what else is different on the DSP D board? I don't think I've seen any elaboration anywhere. I've asked this question before with no answer so far. I'd like some kind of 'sales talk' so I know what I'm getting. It's really good - buy it. is not enough. VE7XF __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Re： K3 DIY DSP Rev D - please elabo rate
Hello Ralph, Yes, good question. In fact, I really want to know: 1. Will there be any differences in the key RX specifications (i.e. BDR and MDS, survival among strong big guns) if DSP Rev D is installed? 2. From the bit and piece of information scattered among the emails in this forum and the Elecraft web pages, I have been given to understand that the modifications are related to the cut off point of the high end and extension of the low end of the audio specturm. Is my understanding correct? 3. If my understanding is correct, I suppose the TX and RX EQ in the menu of K3 can address the audio issue. 4. If my understanding is NOT correct, what is actual benefit of all those DSP board modification which cannot be addressed in the audio section i.e. TX and RX EQ? I think Elecraft should set out in a table in their website comparing the before Vs after modifications in terms of performance of K3. I agree with you that It's really good - buy it. is not enough. I don't mind paying the extras for the modifications but need to know precisely what I am paying for. 73 HNY, Johnny VR2XMC - 郵件原件 寄件人﹕ Ralph Parker ve...@dccnet.com 收件人﹕ Elecraft@mailman.qth.net 傳送日期﹕ 2010/1/1 (五) 4:48:10 PM 主題： Re: [Elecraft] K3 DIY DSP Rev D - please elaborate ...so besides the LPF, what else is different on the DSP D board? I don't think I've seen any elaboration anywhere. I've asked this question before with no answer so far. I'd like some kind of 'sales talk' so I know what I'm getting. It's really good - buy it. is not enough. VE7XF Yahoo!香港提供網上安全攻略，教你如何防範黑客! 請前往 http://hk.promo.yahoo.com/security/ 了解更多! __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Re： K3 DIY DSP Rev D - please elabo rate
Hi Johnny I have seen many subtle improvements in the K3's receiver with the many successive firmware upgrades. There is no supporting documentary evidence from Elecraft for these subtle changes or improvements that I have noticed. I have worn out a coaxial switch comparing and testing K3's to other radios. When you have access to as many K3's as I do, all with different serial numbers with which you can play with, upgrade and compare. They belong to my radio club BTW. The improvements that I am seeing is not entirely in my imagination. I am sure that many of the improvements comes about because of better DSP techniques and algorithms thats implemented and not mentioned by Elecraft. SDR techniques and how they are applied to an individual product is not an exact science. I am sure Elecraft has developed many of its own techniques and algorithms for its DSP library. These will never ever be revealed or discussed as its their intellectual property. I own a Watkins Johnson HF1000 and it was returned several times to their factory for updates. The receiver would return and the DSP and receiver would be magically better. When I discussed this once on the phone with one of their engineers, his comments were that that they were improving and tesing new DSP techniques all the time. His comments were also that these would never be discussed nor would the information ever be released to the public. I am sure its the same with Elecraft. Another product like this with propriety DSP techniques is the Perseus, I am sure that there are many who would like to get their hands on some of Niko's code. I had the opportunity to compare a Rohde-Schwarz DSP receiver to the Perseus, and let me tell you that the Perseus was a lot better. Now if a company like Rohde-Schwarz cant beat a one man show like Microtelecom it tells you that DSP programming is not as straightforward as many want you to believe especially when it applies to HF receivers. I think the best bet is to keep your K3 updated with all the mods and upgrades. You will be getting many things for free thats not even mentioned. The small price for the DSP upgrade is minimal compared to what other companies would be charging you for a similar upgrade, thats if you would even get such an opportunity. Certainly if it came from Yaesu or Icom you would have to ship the radio back to the factory. Look at the costly exercise that FT9000 owners went through for the PEP and factory upgrade program. By all accounts that transformed the FT9000 into a new radio. If you own a K3, the ticket price for continual improvement is beer money. While I have to also pay expensive shipping, I still consider it to be cheap way out for a better product in the end analysis. I certainly will be trying and upgrading all our clubs K3's with the upgraded DSP board. 73 John --- On Fri, 1/1/10, Johnny Siu vr2...@yahoo.com.hk wrote: From: Johnny Siu vr2...@yahoo.com.hk Subject: [Elecraft] Re： K3 DIY DSP Rev D - please elaborate To: Ralph Parker ve...@dccnet.com, Elecraft@mailman.qth.net Date: Friday, January 1, 2010, 1:38 AM Hello Ralph, Yes, good question. In fact, I really want to know: 1. Will there be any differences in the key RX specifications (i.e. BDR and MDS, survival among strong big guns) if DSP Rev D is installed? 2. From the bit and piece of information scattered among the emails in this forum and the Elecraft web pages, I have been given to understand that the modifications are related to the cut off point of the high end and extension of the low end of the audio specturm. Is my understanding correct? 3. If my understanding is correct, I suppose the TX and RX EQ in the menu of K3 can address the audio issue. 4. If my understanding is NOT correct, what is actual benefit of all those DSP board modification which cannot be addressed in the audio section i.e. TX and RX EQ? I think Elecraft should set out in a table in their website comparing the before Vs after modifications in terms of performance of K3. I agree with you that It's really good - buy it. is not enough. I don't mind paying the extras for the modifications but need to know precisely what I am paying for. 73 HNY, Johnny VR2XMC - 郵件原件 寄件人﹕ Ralph Parker ve...@dccnet.com 收件人﹕ Elecraft@mailman.qth.net 傳送日期﹕ 2010/1/1 (五) 4:48:10 PM 主題： Re: [Elecraft] K3 DIY DSP Rev D - please elaborate ...so besides the LPF, what else is different on the DSP D board? I don't think I've seen any elaboration anywhere. I've asked this question before with no answer so far. I'd like some kind of 'sales talk' so I know what I'm getting. It's really good - buy it. is not enough. VE7XF Yahoo!香港提供網上安全攻略，教你如何防範黑客! 請前往 http://hk.promo.yahoo.com/security/ 了解更多! __ Elecraft mailing list Home:
Re: [Elecraft] K3: honest question re Audio Peak Filter
Vic, I think you might have missed my second post where I draw a similar conclusion: http://mailman.qth.net/pipermail/elecraft/2009-December/122275.html 73/HNY, Barry N1EU On Fri, Jan 1, 2010 at 1:28 AM, Vic K2VCO v...@rakefet.com wrote: But is this any different from reducing the K3 DSP bandwidth to 50Hz and turning up the volume? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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: honest question re Audio Peak Filter
This is all very interesting, but I seem to recall a post a few days ago by Lyle stating that the K3 RX EQ was applied by additional shaping of the IF response, and there is no programmable filtering at AF in the K3. That is the reason for the LPF board. So surely this is one wish that can only be fulfilled using an external box, unless Elecraft finds a way to shoehorn a new APF board into the K3? - Julian, G4ILO. K2 #392 K3 #222. * G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html -- View this message in context: http://n2.nabble.com/K3-honest-question-re-Audio-Peak-Filter-tp4237359p4239288.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] DIY DSP Rev D
DaveL G3TJP wrote: Note, working with 0603 size SMT components is not a task to be undertaken lightly. Considerable skill is needed to remove existing components and substitute the replacement values. I have very little experience with SMT components but I recall that I had to remove a couple to do one of the earlier K3 mods. I just used two soldering irons and applied them to both ends of the part at the same time and it was off in a jiffy. MUCH easier than removing parts from thru-hole boards. So is this really as difficult as people make out? - Julian, G4ILO. K2 #392 K3 #222. * G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html -- View this message in context: http://n2.nabble.com/DIY-DSP-Rev-D-tp4238315p4239293.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 TXEQ
Arie Kleingeld PA3A-2 wrote: I wouldn't tailor anything with such cartridges. The HC4 and 5 are carefully tailored already by Heil. That's one of the reasons why people by them. But Heil themselves state: To achieve maximum audio quality it is important to adjust the DSP settings of your transmitter when using Heil microphones. ( http://www.heilsound.com/amateur/settings/index.htm ) - Julian, G4ILO. K2 #392 K3 #222. * G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html -- View this message in context: http://n2.nabble.com/K3-TXEQ-tp4236984p4239301.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: honest question re Audio Peak Filter
As far as I can see, Lyle's dsp firmware is creating the AF response dynamically from the IF - it's just a matter of Lyle shoehorning APF code. I'd guess that one reason LPF was implemented in hardware rather than firmware is to filter out noise that was generated either at the DAC or post-DAC. 73/HNY, Barry N1EU Julian, G4ILO wrote: This is all very interesting, but I seem to recall a post a few days ago by Lyle stating that the K3 RX EQ was applied by additional shaping of the IF response, and there is no programmable filtering at AF in the K3. That is the reason for the LPF board. So surely this is one wish that can only be fulfilled using an external box, unless Elecraft finds a way to shoehorn a new APF board into the K3? -- View this message in context: http://n2.nabble.com/K3-honest-question-re-Audio-Peak-Filter-tp4237359p4239351.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] Spring cleaning
Happy New Year Everyone! I am looking at my K3 in the sunshine and I have noticed some fingerprints on the front panel. Some or the ore often used buttons have dirt on them too. I wonder what people are using to clean the front panel? Soapy water will do I expect - anything better? I don't wish to damage the paintwork or leave water marks. Mike -- View this message in context: http://n2.nabble.com/Spring-cleaning-tp4239369p4239369.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K2] how much harder to build: K2 vs K1?
hi, I can only speak for the K2 which I built. The key point is your soldering skills. Next point is patience and following the instructions. If you want to see my building pathway you can find it here: http://www.qsl.net/oe9fwv/k2.html from the dates you can see how long it took me to finish the task. One idea someone already wrote on the list is building a small kit like the XG2 or something like this and see if your soldering skills are already sufficient or need improvement And if you plan to start: I sugest to look at the rework eliminator kit. I missed this point unfortunately. http://www.unpcbs.com/ 73! and have fun! de Werner OE9FWV lstavenhagen schrieb am 30 Dec 2009 um 17:27: Hi all, I'm considering building a K2, but here's my situation. I'd be a first-time kit builder, I've never had the opportunity to build and the K2 looks like it'd be great fun and a great learning experience. The K1 sounds like it's the better choice for a first-time build, but the K2 matches what I need in a radio a lot better. So I guess my general question is, how much harder would a K2 be to build over a K1? I.e. what are the gotchas with the K2 for a novice builder that aren't in a K1? I know this is kind of vague, but that's the only way I can think of to ask the question. I think I'd still do OK if I took my time and got good tools (I just ordered the recommended weller soldering station). Thanks, LS W5QD -- Don't you hate those silly [tags] silly people put on subject line? Email powered by Pegasus Mail free at http://www.pmail.com Homepage: http://www.qsl.net/oe9fwv/ Fone +43 5522 75013 Fax +43 5522 22505 Mobile +43 664 63 400 14 Elecraft K2 #5203 K3 #656 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Re： Re： K3 DIY DSP Rev D - please elaborate
Hello John, Thanks for your comments and I understand what you would like to express. However, I agree with the previous writer, VE7XF, that Elecraft should tell us the difference of DSP Rev D before Vs after modification. All the information is just piece meal and scattered among emails and Elecraft website. I know it must be good, otherwise, no modification is required. However, Elecraft should tell me how good it will be, BDR, MDS ??? Of course, I owned a K3 and still have a K2, I understand the continuous improvement of Elecraft products. Again, as a customer, I still like to know what benefit I shall get from the DSP Rev D modification. Similar to every firmware upgrade, Elecraft gives a brief description of the improved areas. So, why should they not do the same for the DSP Rev D modification? The answer to my questions in my previous email should be simple and will only take Elecraft a few minutes to address them. They are the designers and well known why modifications are required and what benefits can be achieved. I am not a radio man by profession and really want to learn more radio knowledge from them so as to educate myself. 73 HNY Johnny Siu VR2XMC - 郵件原件 寄件人﹕ juergen plebia...@yahoo.com 收件人﹕ Elecraft@mailman.qth.net 傳送日期﹕ 2010/1/1 (五) 6:47:37 PM 主題： Re: [Elecraft] Re： K3 DIY DSP Rev D - please elaborate Hi Johnny I have seen many subtle improvements in the K3's receiver with the many successive firmware upgrades. There is no supporting documentary evidence from Elecraft for these subtle changes or improvements that I have noticed. I have worn out a coaxial switch comparing and testing K3's to other radios. When you have access to as many K3's as I do, all with different serial numbers with which you can play with, upgrade and compare. They belong to my radio club BTW.. The improvements that I am seeing is not entirely in my imagination. I am sure that many of the improvements comes about because of better DSP techniques and algorithms thats implemented and not mentioned by Elecraft. SDR techniques and how they are applied to an individual product is not an exact science. I am sure Elecraft has developed many of its own techniques and algorithms for its DSP library. These will never ever be revealed or discussed as its their intellectual property. I own a Watkins Johnson HF1000 and it was returned several times to their factory for updates. The receiver would return and the DSP and receiver would be magically better. When I discussed this once on the phone with one of their engineers, his comments were that that they were improving and tesing new DSP techniques all the time. His comments were also that these would never be discussed nor would the information ever be released to the public. I am sure its the same with Elecraft. Another product like this with propriety DSP techniques is the Perseus, I am sure that there are many who would like to get their hands on some of Niko's code. I had the opportunity to compare a Rohde-Schwarz DSP receiver to the Perseus, and let me tell you that the Perseus was a lot better. Now if a company like Rohde-Schwarz cant beat a one man show like Microtelecom it tells you that DSP programming is not as straightforward as many want you to believe especially when it applies to HF receivers. I think the best bet is to keep your K3 updated with all the mods and upgrades. You will be getting many things for free thats not even mentioned. The small price for the DSP upgrade is minimal compared to what other companies would be charging you for a similar upgrade, thats if you would even get such an opportunity. Certainly if it came from Yaesu or Icom you would have to ship the radio back to the factory. Look at the costly exercise that FT9000 owners went through for the PEP and factory upgrade program. By all accounts that transformed the FT9000 into a new radio. If you own a K3, the ticket price for continual improvement is beer money. While I have to also pay expensive shipping, I still consider it to be cheap way out for a better product in the end analysis. I certainly will be trying and upgrading all our clubs K3's with the upgraded DSP board. 73 John --- On Fri, 1/1/10, Johnny Siu vr2...@yahoo.com.hk wrote: From: Johnny Siu vr2...@yahoo.com.hk Subject: [Elecraft] Re： K3 DIY DSP Rev D - please elaborate To: Ralph Parker ve...@dccnet.com, Elecraft@mailman.qth.net Date: Friday, January 1, 2010, 1:38 AM Hello Ralph, Yes, good question. In fact, I really want to know: 1. Will there be any differences in the key RX specifications (i.e. BDR and MDS, survival among strong big guns) if DSP Rev D is installed? 2. From the bit and piece of information scattered among the emails in this forum and the Elecraft web pages, I have been given to understand that the modifications are related to the cut off point of the high end and extension of
Re: [Elecraft] Re： K3 DIY DSP Rev D - please elabo rate
I believe the firmware release notes reveal everything that has been improved/changed with each release. I see no need for Elecraft to document the algorithms. 73, Don W3FPR juergen wrote: Hi Johnny I have seen many subtle improvements in the K3's receiver with the many successive firmware upgrades. There is no supporting documentary evidence from Elecraft for these subtle changes or improvements that I have noticed. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Re： Re： K3 DIY DSP Rev D - please elaborate
Johnny Siu wrote: I know it must be good, otherwise, no modification is required. However, Elecraft should tell me how good it will be, BDR, MDS ??? Johnny I believe I can safely say absolutely ZERO difference in major specs like BDR, MDS, IMDDR3, etc. These are all determined well ahead of the DSP audio stage. I believe the main difference is in audio bandwidth only...extension of the low end response and attenuation of high end DSP artifacts. If you like ESSB or are bothered by the 12 kHz artifacts, then you might want the mod. Personally I'm waiting for someone with two units (one with the mod and one without) to post some audio recordings before I go to the bother and expense of this mod. BTW I have done ALL other mods but I'm not at all convinced this one will make any difference to me since I don't do ESSB and I don't hear any artifacts in the headphones I use, even though a hearing test confirms I still have good hearing at high frequencies. 73 HNY! Bill -- View this message in context: http://n2.nabble.com/K3-DIY-DSP-Rev-D-please-elaborate-tp4238598p4239477.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 - Asserting DTR/RTS for PTT
Apparently I don't understand the use of DTR/RTS for PTT. If I assert DTR, the red xmit LED comes on, but when I send an RTTY string to the rig, there is no output. DTR is turned on in CONFIG. I'm in DATA mode and set for AFSK A. What I'm after is a way to avoid VOX with CW ( Yeah I know for CW I need to be in CW mode), RTTY, and PSK. Is there a way? 73, 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
Re: [Elecraft] K3: honest question re Audio Peak Filter
I'd guess that one reason LPF was implemented in hardware rather than firmware is to filter out noise that was generated either at the DAC or post-DAC. The LPF eliminates leakage of the DAC clock and audio IMD products of the clock with the recovered audio. Those products are not within the control of the DSP code, they are hardware issues. The DAC clock/IMD is only an issue in the K3 because the receiver is so quiet above 4.5 to 5 KHz. Where other rigs have audio response (noise floor) that is roughly 50 - 60 dB below the peak audio output, the K3's out of band audio is down more than 90 dB (!) at 5 KHz except for the DAC artifacts. Even though the artifacts are more than 60 dB below peak audio, they are more than 30 dB higher than the receiver noise floor (at the same frequency) and are easily audible for those with normal hearing and good speakers or headphones. I've ordered a pair of the LPF boards and will make comparisons between S/N 622 with none of the audio modifications and S/N 1450 with all of the modifications except the LF audio enhancement once I've installed the LFP in 1450 (and before I do the updates to s/n 622). 73, ... Joe, W4TV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Barry N1EU Sent: Friday, January 01, 2010 7:10 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3: honest question re Audio Peak Filter As far as I can see, Lyle's dsp firmware is creating the AF response dynamically from the IF - it's just a matter of Lyle shoehorning APF code. I'd guess that one reason LPF was implemented in hardware rather than firmware is to filter out noise that was generated either at the DAC or post-DAC. 73/HNY, Barry N1EU Julian, G4ILO wrote: This is all very interesting, but I seem to recall a post a few days ago by Lyle stating that the K3 RX EQ was applied by additional shaping of the IF response, and there is no programmable filtering at AF in the K3. That is the reason for the LPF board. So surely this is one wish that can only be fulfilled using an external box, unless Elecraft finds a way to shoehorn a new APF board into the K3? -- View this message in context: http://n2.nabble.com/K3-honest-question-re-Audio-Peak-Filter-t p4237359p4239351.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] Spring cleaning
Pledge Multi Surface is what I use and works very well. Tony W7GO AD6XY wrote: Happy New Year Everyone! I am looking at my K3 in the sunshine and I have noticed some fingerprints on the front panel. Some or the ore often used buttons have dirt on them too. I wonder what people are using to clean the front panel? Soapy water will do I expect - anything better? I don't wish to damage the paintwork or leave water marks. Mike __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] heterodyne tones
Not sure if this is normal or not, but I hear what seems to be a heterodyne tone on mostly 20 and 15 meters, 14.000, 14.030, 14.091, also 21.022, 21. 053..(just a few freq examples) usually at S-9 levels. Can anyone explain, and should I be concerned? Dave K. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 - Asserting DTR/RTS for PTT
Mike, You are apparently setting PTT with the DTR signal OK, But, how are you sending a RTTY string? If you are using AFSK A, the RTTY string must come into the K3 as audio (likely from a soundcard) - the easiest is to use the K3 LINE IN - plug a stereo cable between the soundcard line out and the K3 line in.. You control the LINE OUT level on the soundcard AND the LINE-IN level on the K3 to produce 4 bars on the ALC display - use TX TEST to set the levels and you will not bother anyone with a transmitted signal.. 73, Don W3FPR Mike wrote: Apparently I don't understand the use of DTR/RTS for PTT. If I assert DTR, the red xmit LED comes on, but when I send an RTTY string to the rig, there is no output. DTR is turned on in CONFIG. I'm in DATA mode and set for AFSK A. What I'm after is a way to avoid VOX with CW ( Yeah I know for CW I need to be in CW mode), RTTY, and PSK. Is there a way? 73, 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
Re: [Elecraft] DIY DSP Rev D
Have a look at the mod. Other than trying to make Elecraft justify each additional nickel, it's really whether you want to upgrade the DSP board or not. You do the stuff yourself, you're responsible for what happens, or doesn't. Especially if you use a non-Elecraft mod. Replace/mod the board by the rules and you're still in the stream for future changes. You're in the middle of a work-in-progress by a responsive and sharp company. Any of you out there think you're superior to what Elecraft is doing? And privy to the legally private intellectual property that is driving it (and they'd be crazy to publish)? I'm sure a very few of you are. But if not, you going to take that on in a 4K$ radio over a cost differential less than the price of a restaurant meal? Sounds like dropping the pound to save the shilling to me. I'm going to order the board. Have other things to spend time on. Looking at the picture of the LPF replacement board convinced me. There's more than meets the eye. The little work I have done on my K3 were to restore it to spec (repair) or upgrade it to a new spec, not redesign it. When a problem has been hashed out on the reflector/lists, and Elecraft has taken it on, I want the Elecraft solution. I've not seen anything done on Elecraft equipment akin to W8JI's famous Drake or Yaesu mods. Unlikely on Elecraft, because Wayne co. would have picked it up early on, re-engineered it to a commercially feasible way to permanently incorporate it. 73, Guy. On Fri, Jan 1, 2010 at 6:16 AM, Julian, G4ILO julian.g4...@gmail.comwrote: DaveL G3TJP wrote: Note, working with 0603 size SMT components is not a task to be undertaken lightly. Considerable skill is needed to remove existing components and substitute the replacement values. I have very little experience with SMT components but I recall that I had to remove a couple to do one of the earlier K3 mods. I just used two soldering irons and applied them to both ends of the part at the same time and it was off in a jiffy. MUCH easier than removing parts from thru-hole boards. So is this really as difficult as people make out? - Julian, G4ILO. K2 #392 K3 #222. * G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html -- View this message in context: http://n2.nabble.com/DIY-DSP-Rev-D-tp4238315p4239293.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] Re? Re? K3 DIY DSP Rev D - please elaborate
On Fri, 1 Jan 2010 20:53:14 +0800 (HKT), Johnny Siu vr2...@yahoo.com.hk wrote: [snip] I owned a K3 and still have a K2, [snip] I still like to know what benefit I shall get from the DSP Rev D modification. [snip] You will not receive any benefit from the revision. You don't have a K3 to install it in. 73 and best regards to you and your family in the new year. Tom, N5GE n...@n5ge.com K3 #806 with SUB RX, K3 #1055, PR6, XV144, XV432, KRC2, W1, 2 W2's and other small kits 1 K144XV on order http://www.n5ge.com http://www.swotrc.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Interesting comments on K3, Icom and Flex 5k
The slave receiver was an IC746, not a great radio to compare against :-). HNY John N1JM . Fully 30 percent of the EU stations worked were not audible on a slave Icom xcvr using the phased EU beverages. -- View this message in context: http://n2.nabble.com/Interesting-comments-on-K3-Icom-and-Flex-5k-tp4238151p4239980.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] heterodyne tones
If you disconnect the antenna, is it gone or reduced? David Kowalewski wrote: Not sure if this is normal or not, but I hear what seems to be a heterodyne tone on mostly 20 and 15 meters, 14.000, 14.030, 14.091, also 21.022, 21. 053..(just a few freq examples) usually at S-9 levels. Can anyone explain, and should I be concerned? Dave K. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- View this message in context: http://n2.nabble.com/heterodyne-tones-tp4239781p4240110.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] heterodyne tones
David, I have found many devices in the shack that cause Birdies 1 - My new Laser printer 2 - The video camera on my EME tower. 3 - computer and computer monitors. Try turning everything off in your shack and see if that helps. 73 HNY Ken K5DNL --- --- On Fri, 1/1/10, David Kowalewski djkowalew...@me.com wrote: From: David Kowalewski djkowalew...@me.com Subject: [Elecraft] heterodyne tones To: elecraft@mailman.qth.net Date: Friday, January 1, 2010, 10:00 AM Not sure if this is normal or not, but I hear what seems to be a heterodyne tone on mostly 20 and 15 meters, 14.000, 14.030, 14.091, also 21.022, 21. 053..(just a few freq examples) usually at S-9 levels. Can anyone explain, and should I be concerned? Dave K. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] heterodyne tones
Dave, I have similar hetrodynes on 15m and they are from my computer. When I turn the computer off, they disappear. Tom/k1tl... __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] how much harder to build: K2 vs K1?
LS wrote: I decided to go with the K1 ... Regardless of if you later decide to build a K2, I think you'll like the K1 enough to keep it too. It's a very nice, very capable, great performing compact radio. It looks good too. ...with 2 band module... Now there's where I think you're making a **big** mistake. I've owned my K1 for going on ten years now (SN 175), purchased when two-band boards were the ONLY choice. The four-band board was an tremendous improvement in the utility of the K1. It more than doubled the usefulness of the K1 for me. It can be built using parts standard with the kit for 40m, 30m, and any two of 20m, 17m, or 15m. Of course, almost everybody chooses 20m, so Elecraft doesn't mention that as an option. I firmly believe that 15m, when band conditions support it, is the best QRP band of them all. So 40m, 30m, 20m, and 15m are most people's choice. The only real reason today for anyone purchasing a two-band board is to provide coverage of the other two officially supported K1 bands, 80m and 17m. (I re-built one of my old two-band boards for those bands.) Or maybe to roll your own 160m or 10m boards as some have done. The bandpass filtering on the four-band board is superior to (sharper than) the filters on the two-band board. So, not only do you get twice the bands, you get better performance on both transmit and receive on those bands. The other option you should choose right now is the illuminated LCD. It is a great feature, but one which is quite difficult if you decide you want it later AFTER you've built your K1. You can add the KAT1 and KNB1 latter, but the backlighted LCD needs to be added during the initial build. 73, Mike / KK5F __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 LP Pan for sale
I have a recent factory assembled serial number #621 LP Pan for sale. The box and Power SDR (point and click) software works great but I am not using it as much as I thought I would. LP Pan is $180.00 shipped in the US. If any one is interested I also have a Personus Firebox for sale that is a great companion to the LP Pan if you need a high end sound card. Price on this is $175.00 shipped. Both items have original boxes. Contact me off list - j...@kt5e.us or 720-375-3429. 73, Jay - KT5E __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 DIY DSP Rev D - please elaborate
By firmware release notes, do you mean the comments associated with the order for the K3DSPUPGD, Don? If that's a yes, then this should settle matters because it says: Improves low freq RX/TX audio response below 300 Hz, and adds a Low Pass Filter (LPF) that rolls off RX audio above 4 kHz. Thanks for your guidance on this, Don. A Happy New Year to you and to all on the reflector. 73 DaveL G3TJP __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] OT - Need specs for two transistors from the Reflector
Folks: Sorry to bother you this early in the year I'm having problems locating specs for two transistors I'm going to need to replace. Tried Googleing for them but didn't find much specific info... BZ AE1 TO-92 I've seen several spec sheet references to is, but they all seem to come from websites that my AntiVirus doesn't want to let me visit. Hopefully someone with a decently current NTE substitution book might be able to help. ST 9014C TO-92 The closest I can come to this is an SS 9104C (Mouser) which may or may NOT be the same device. Again, hopefully an NTE book might help. Please if you have ANY info, respond OFF-REFLECTOR to keep the 'noise' down to a dull roar. Happy New Year to all. 73, Tom Hammond N0SS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] OT K3 in Alaska
Hi to the new owner of a K3 in Fairbanks, Alaska. You had a nice signal into VK whilst having a QSO into JA. Nice to hear another K3 on the air. Conditions to North America have been improving lately on 20M and it would be great if more folks on the reflector could be heard Down Under. 73's and good Dx... De VK4FD - Gary Sent via BlackBerry® from Telstra __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] re K3 Spring cleaning
I hate to expose my ignorance, but don't use alcohol. I've ordered a new bezel already. I was using it to clean the knobs and faceplate and some soaked behind the bezel and left a white crusty look that will not remove. Wayne WA9VEE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] P3 getting closer
On Christmas Eve morning I bowled in a tournament, and won $45. Then today I bowled in another tournament and won $55. So now I'm $100 closer to a P3. I may have it paid for by the time it's released :-) 73, Bob N6WG The Little Station with Attitude __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 DIY DSP Rev D - please elaborate
David, Yes, that answers it about the DSP board upgrade - there will be a note there if there is a hardware change that requires updated firmware to realize the upgraded function. Normally, the firmware is backwards compatible meaning that the updated firmware will run on K3s without the hardware upgrade. I was really commenting to the gentleman who seemed to be having a problem locating documentation about what was included in each firmware release (upgrade) - perhaps I misunderstood his question (statement?). 73, Don W3FPR David Lankshear wrote: By firmware release notes, do you mean the comments associated with the order for the K3DSPUPGD, Don? If that's a yes, then this should settle matters because it says: Improves low freq RX/TX audio response below 300 Hz, and adds a Low Pass Filter (LPF) that rolls off RX audio above 4 kHz. Thanks for your guidance on this, Don. A Happy New Year to you and to all on the reflector. 73 DaveL G3TJP __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 DSP Rev D - some of the findings
Hello Group, Thanks to all the emails off-the-list answering my questions about the the benefit of DSP Rev D modification. Although none of those emails is officially from Elecraft, I would summarize the findings as follows: 1. the modifications will have no effect on the key RX performances such as BDR, IMD, MDS etc; 2. the modifications are related to the artifacts in audio spectrum generated from the DSP; 3. some of the K3 users do not have problems the DSP artifacts even without the DSP Rev D modifications because they didn't even hear the artifacts; 4. for those K3 users who can hear the artifacts, the modifications did lessen their listen fatigue; 5. the modifications may be also useful for those users who would like ESSB I have thanked all those replied to me off the list individually. Should I miss any of you from the reply list, please forgive my oversight. This group is wonderful. I have been given the chance to learn more radio knowledge from the experts who in fact gave me personal attention by answering my questions off-the-list. Of course, some of you may find my questions are 'baby standard' or even 'why border to ask?' If it were the case, please relax a bit and give me, a NON-RADIO man by profession, the chance to ask and educate myself. 73 HNY, Johnny Siu VR2XMC Yahoo!香港提供網上安全攻略，教你如何防範黑客! 請前往 http://hk.promo.yahoo.com/security/ 了解更多! __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 getting closer
It sounds like a P3 may be right up your alley . . . so to speak, Bruce - W8FU -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bob Tellefsen Sent: Friday, January 01, 2010 6:19 PM To: Reflector Elecraft Subject: [Elecraft] P3 getting closer On Christmas Eve morning I bowled in a tournament, and won $45. Then today I bowled in another tournament and won $55. So now I'm $100 closer to a P3. I may have it paid for by the time it's released :-) 73, Bob N6WG The Little Station with Attitude __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 DSP Rev D - some of the findings
Hi Johnny You might also want to read about why some aspects of the K3.'s performance makes it sound harsh. Some interesting information on Marks blog page. Mark is not the only person that has observed that the K2 sounds sweeter than the K3 on weak signal CW. Mark also found that there was less ringing on the Ten Tec Orion's narrow DSP filters. DSP algorithms and how they are implemented play an important role as to how a radio ultimately performs. Here is an example where it is has been measured. http://pa5mw.blogspot.com/ I have seen no comment that the DSP revision D board improves Inband IMD. It will be interesting to see if it does improve RX inband IMD. 73 John --- On Fri, 1/1/10, Johnny Siu vr2...@yahoo.com.hk wrote: From: Johnny Siu vr2...@yahoo.com.hk Subject: [Elecraft] K3 DSP Rev D - some of the findings To: n...@n5ge.com, Elecraft@mailman.qth.net Date: Friday, January 1, 2010, 4:17 PM Hello Group, Thanks to all the emails off-the-list answering my questions about the the benefit of DSP Rev D modification. Although none of those emails is officially from Elecraft, I would summarize the findings as follows: 1. the modifications will have no effect on the key RX performances such as BDR, IMD, MDS etc; 2. the modifications are related to the artifacts in audio spectrum generated from the DSP; 3. some of the K3 users do not have problems the DSP artifacts even without the DSP Rev D modifications because they didn't even hear the artifacts; 4. for those K3 users who can hear the artifacts, the modifications did lessen their listen fatigue; 5. the modifications may be also useful for those users who would like ESSB I have thanked all those replied to me off the list individually. Should I miss any of you from the reply list, please forgive my oversight. This group is wonderful. I have been given the chance to learn more radio knowledge from the experts who in fact gave me personal attention by answering my questions off-the-list. Of course, some of you may find my questions are 'baby standard' or even 'why border to ask?' If it were the case, please relax a bit and give me, a NON-RADIO man by profession, the chance to ask and educate myself. 73 HNY, Johnny Siu VR2XMC Yahoo!香港提供網上安全攻略，教你如何防範黑客! 請前往 http://hk.promo.yahoo.com/security/ 了解更多! __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 getting closer
I think it will bowl you over... 73, Mike NF4L Bruce McLaughlin wrote: It sounds like a P3 may be right up your alley . . . so to speak, Bruce - W8FU -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bob Tellefsen Sent: Friday, January 01, 2010 6:19 PM To: Reflector Elecraft Subject: [Elecraft] P3 getting closer On Christmas Eve morning I bowled in a tournament, and won $45. Then today I bowled in another tournament and won $55. So now I'm $100 closer to a P3. I may have it paid for by the time it's released :-) 73, Bob N6WG The Little Station with Attitude __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 getting closer
Oooof :-) 73, Bob N6WG - Original Message - From: Mike n...@nf4l.com Cc: 'Bob Tellefsen' n...@comcast.net; 'Reflector Elecraft' elecraft@mailman.qth.net Sent: Friday, January 01, 2010 4:57 PM Subject: Re: [Elecraft] P3 getting closer I think it will bowl you over... 73, Mike NF4L Bruce McLaughlin wrote: It sounds like a P3 may be right up your alley . . . so to speak, Bruce - W8FU -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bob Tellefsen Sent: Friday, January 01, 2010 6:19 PM To: Reflector Elecraft Subject: [Elecraft] P3 getting closer On Christmas Eve morning I bowled in a tournament, and won $45. Then today I bowled in another tournament and won $55. So now I'm $100 closer to a P3. I may have it paid for by the time it's released :-) 73, Bob N6WG The Little Station with Attitude __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 DSP Rev D - some of the findings
juergen piezo wrote: Mark also found that there was less ringing on the Ten Tec Orion's narrow DSP filters. Note that: The above (Orion) 200Hz and 100Hz DSP filter settings are 227Hz and 155Hz in reality. This is a key reason there is less ringing. If I recall correctly, the DSP 50 (lowest setting) in the K3 is actually around 70-80 Hz, which is about half of the Orion DSP 100 (lowest setting). 73, Bill -- View this message in context: http://n2.nabble.com/K3-DIY-DSP-Rev-D-please-elaborate-tp4238598p4241252.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] WTB Elecraft T1 ATU
Hi.. I'm looking for a T1ATU to buy. Tnx 73s Noel Anderson. W1XB Pse contact me off-list noel58...@gmail.com Sent from my iPhone __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Re： Re： K3 DIY DSP Rev D - please elaborate
Honestly I didn't think I was hearing all that much in the way of artifacts and I even recorded audio from the K3 and applied filtering to it and didn't really hear a lot of A/B comparison difference. However I noticed that the audio is MUCH less fatiguing when listening to the K3 since I installed the LP daughter board on my DSP board. ~Brett (KC7OTG) On Fri, 2010-01-01 at 05:35 -0800, Bill W4ZV wrote: Johnny Siu wrote: I know it must be good, otherwise, no modification is required. However, Elecraft should tell me how good it will be, BDR, MDS ??? Johnny I believe I can safely say absolutely ZERO difference in major specs like BDR, MDS, IMDDR3, etc. These are all determined well ahead of the DSP audio stage. I believe the main difference is in audio bandwidth only...extension of the low end response and attenuation of high end DSP artifacts. If you like ESSB or are bothered by the 12 kHz artifacts, then you might want the mod. Personally I'm waiting for someone with two units (one with the mod and one without) to post some audio recordings before I go to the bother and expense of this mod. BTW I have done ALL other mods but I'm not at all convinced this one will make any difference to me since I don't do ESSB and I don't hear any artifacts in the headphones I use, even though a hearing test confirms I still have good hearing at high frequencies. 73 HNY! Bill -- View this message in context: http://n2.nabble.com/K3-DIY-DSP-Rev-D-please-elaborate-tp4238598p4239477.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] Re： Re： K3 DIY DSP Rev D - pl ease elaborate
Wish there was a way to analyze and quantify MUCH less fatiguing. There are aspects of hearing that are poorly understood. For instance there is emerging cellphone research that indicates that listening to speech in one ear is much more attention consuming than listening to the same conversation in an open room. It might be something of our nature that our brain expects to hear high sound components in a particular phase relationship that decodes into source and position and if the phase and spatial relationship is not present in high frequency audio it occupies the brain's attention and energy trying to decode it, much like the eye strain that comes from being unable to focus on an image. I know I find it very hard to listen to CW for any period of time that is only in one ear. What other kinds of reactions to audio are there that are not common knowledge? 73, Guy. On Fri, Jan 1, 2010 at 9:47 PM, Brett Howard br...@livecomputers.comwrote: Honestly I didn't think I was hearing all that much in the way of artifacts and I even recorded audio from the K3 and applied filtering to it and didn't really hear a lot of A/B comparison difference. However I noticed that the audio is MUCH less fatiguing when listening to the K3 since I installed the LP daughter board on my DSP board. ~Brett (KC7OTG) On Fri, 2010-01-01 at 05:35 -0800, Bill W4ZV wrote: Johnny Siu wrote: I know it must be good, otherwise, no modification is required. However, Elecraft should tell me how good it will be, BDR, MDS ??? Johnny I believe I can safely say absolutely ZERO difference in major specs like BDR, MDS, IMDDR3, etc. These are all determined well ahead of the DSP audio stage. I believe the main difference is in audio bandwidth only...extension of the low end response and attenuation of high end DSP artifacts. If you like ESSB or are bothered by the 12 kHz artifacts, then you might want the mod. Personally I'm waiting for someone with two units (one with the mod and one without) to post some audio recordings before I go to the bother and expense of this mod. BTW I have done ALL other mods but I'm not at all convinced this one will make any difference to me since I don't do ESSB and I don't hear any artifacts in the headphones I use, even though a hearing test confirms I still have good hearing at high frequencies. 73 HNY! Bill -- View this message in context: http://n2.nabble.com/K3-DIY-DSP-Rev-D-please-elaborate-tp4238598p4239477.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] a simple morse code sender to replace the audio pulser
Or if you don't have the paddles and what not then just use the computer to store a bunch of E's into one of the CW memories. Then just play that memory... On Thu, 2009-12-31 at 16:25 -0500, Don Wilhelm wrote: Hector, IMHO - Finally a voice of sensibility in this discussion. I will offer yet another suggestion for those who do not want to find a box and a switch - find an old computer mouse - those that have real switches on the buttons (the mouse ball does not have to work). Wire either 1 or both switches to the 1/4 inch plug. Now you have a paddle that can send either dots or dashes. Set the speed to about 40 wpm, press the dot side and tune the amp If you want to use a greater duty cycle to refind the amp's tuning, just press the dash side. If you dislike switching to CW mode for tuning, just go to the menu and add CW in SSB. I have always thought the Pulser was just another gadget to clutter up the hamshack. We have tuned amplifiers for years without them, and things worked out just fine. But I also know there are strong advocates of the Pulser that will not be swayed - something about a 30% duty cycle, and a string of dots produces a 50% cycle without changes in the weighting.. 73, Don W3FPR Hector Padron wrote: What could be cheaper than build a project box with just a simple push boton and a piece of wire that will end in a regular stereo 1/4 plug wired for the dots pluged at the CW jack in the rear,c'mom guys,anyone can build that for less than ten bucks and then send the CW at 40 wpm pushing it down,isn't that so hard to build? AD4C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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: Happy New Year - new scan features added for K3BSR.
http://www.zerobeat.net/mediawiki/index.php/K3_BSR-SM_Version_7 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 getting closer
Please strike these from the records and spare us any further misery. I think it will bowl you over... Bruce McLaughlin wrote: It sounds like a P3 may be right up your alley . . . so to speak, -- View this message in context: http://n2.nabble.com/P3-getting-closer-tp4240974p4241499.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
