Re: [Elecraft] The Complete DXer - OT
Ed: Back in the waning days of the Vietnam conflict, I was flying C-130 aircraft (not as a pilot--but I wish I could've!). When doing the long, boring rides over the Pacific from the Philippines or Hawaii, I'd go up and sit with the pilots and crew chief occasionally. Sometimes I'd even end up napping in those great bunks that were right behind them in the crew cabin! We got talking about the HF radios on one flight over our headsets, and I explained a bit about ham radio to them. Intrigued, one of them tuned one of the twin comm radios down to the 40 meter band and listened for a bit. I forget what the radios were, but they could do AM and SSB on either usb or lsb. They finally asked if I could talk to someone as well, and I said sure, why not? So that night I had my first and only C-130 aeronautical mobile pileup on 40 meter ssb while flying in towards California. I spent the better part of two hours working hams that were intrigued by the unique circumstances. I think we were putting out about 300 watts (really not sure about this) into the C-130's very long wire antenna! The coverage was excellent, and the aircrew got a real kick out of my new use for one of the comm radios in the ship. You definitely get better propagation at 35,000 feet! My first and only experience on the DX end of a pileup. Lots of fun! So, do you have any company restrictions against transmitting while you're in command? I promise I won't tell! 73, Dave K7DAA http://www.k7daa.com On Feb 22, 2008, at 2:24 PM, Ed Lambert wrote: One night, 23 January 2008, during a lull in the action on a flight from Anchorage to Chicago, I tuned the #2 HF radio to 7.012 MHz and heard W9KNI calling cq dx asia. He was rewarded with quite a run. It was instructive simply to listen to him in qso with a number of stations during that run. He was running one KW to a three element yagi. He did not say what was driving the KW. I am thinking it was a K3 but don't know for sure. I wish I had some way to get the HF radio on to cw (it only supports upper sideband and AM). I could probably get it done with a good audio oscillator and usb but am not sure if that would work properly. I would like to have tried to contact Bob. I wasn't really dx and certainly wasn't asia but I wonder if he's ever worked a B747 on HF cw. Ed Lambert KD3Y ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] VP6DX and K3
Mark and all, I've worked them on all modes from 15 through 40 meters except RTTY on 17. Guess I didn't know they were doing RTTY on that band. I'll have to give that more attention as their signal of 17 has generally been outstanding. Unfortunately I've not been able to hear them on 12 meters, and only heard them once (but very weak) on 10 meters. No antennas here for 80 or 160 I'm sorry to say. I don't think they will be on much longer, so may try to rig up something for 80 meters this weekend at least. My R8 vertical will actually load up on 80 meters, thanks to the apparently wide range of the K3's ATU, but obviously the antenna sucks on that band nevertheless. I've manged to work a few friends in nearby states doing that, but not much else. Obviously you have a little more mojo in whatever antenna you are using! Hi. Dave W7AQK - Original Message - From: mark roz [EMAIL PROTECTED] To: Elecraft elecraft@mailman.qth.net Sent: Friday, February 22, 2008 8:37 PM Subject: [Elecraft] VP6DX and K3 With my K3 I have worked VP6DX on all HF bands 160m to 10m SSB and CW. RTTY on 30m and 17m without computer. Total 20 QSO's. FB expedition and outstanding K3. I'm sure that there are more operators with K3 that did the same thing. Mark WQ7X Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 noise B and R
The N0SS demo is very impressive. The noise sounds like what I have here in the city suburbs most (all) of the time. But here hitting NB has no tangible effect. I have not found it useful ! (OK; I probably need to read the manual and play with the settings.) On the other hand, NR does work well provided the wanted signal is strong enough. (Once again, read the manual, I know ...) On 80m I have now adopted a different approach to the awful local noise levels. I found that hitting ATT was very effective in reducing unwanted noise, especially when listening to weaker signals, including VP6DX over 8000 miles away and nothing like as loud in here as on the N0SS recordings. Today I tried listening to VP6DX on 80 with ATT set to OFF and the noise was painful. Hitting PRE made it far worse. NR did not really help, but with ATT ON, I worked them on 80m CW with just 10w The antenna here is a 20m wire bisquare, bottom corner about 7 feet off the ground and firing vertically upwards on 80. As the VP6 op said when I told him OUCH But the mojo sure works, because I also made it on 80 with 100w of SSB ! Again this was with ATT ON. PRE seems best left for the HF bands, 20m and up. But ATT is a powerful option when all else fails. John G3JAG K3 #107 K2 # 609 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 noise B and R
John I wondered what filter bandwidth settings you had. A narrow bw of course reduces the noise getting to our ears. How did you handle cw and ssb in that respect? David G3UNA The N0SS demo is very impressive. The noise sounds like what I have here in the city suburbs most (all) of the time. But here hitting NB has no tangible effect. I have not found it useful ! (OK; I probably need to read the manual and play with the settings.) On the other hand, NR does work well provided the wanted signal is strong enough. (Once again, read the manual, I know ...) On 80m I have now adopted a different approach to the awful local noise levels. I found that hitting ATT was very effective in reducing unwanted noise, especially when listening to weaker signals, including VP6DX over 8000 miles away and nothing like as loud in here as on the N0SS recordings. Today I tried listening to VP6DX on 80 with ATT set to OFF and the noise was painful. Hitting PRE made it far worse. NR did not really help, but with ATT ON, I worked them on 80m CW with just 10w The antenna here is a 20m wire bisquare, bottom corner about 7 feet off the ground and firing vertically upwards on 80. As the VP6 op said when I told him OUCH But the mojo sure works, because I also made it on 80 with 100w of SSB ! Again this was with ATT ON. PRE seems best left for the HF bands, 20m and up. But ATT is a powerful option when all else fails. John G3JAG K3 #107 K2 # 609 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 noise B and R
My suggestion would be to use a separate RX antenna. Your existing wire will be very effective at picking up all your local electrical noise. 73 Stewart G3RXQ On Sat, 23 Feb 2008 10:20:34 +, jacrux wrote: The N0SS demo is very impressive. The noise sounds like what I have here in the city suburbs most (all) of the time. But here hitting NB has no tangible effect. I have not found it useful ! (OK; I probably need to read the manual and play with the settings.) On the other hand, NR does work well provided the wanted signal is strong enough. (Once again, read the manual, I know ...) On 80m I have now adopted a different approach to the awful local noise levels. I found that hitting ATT was very effective in reducing unwanted noise, especially when listening to weaker signals, including VP6DX over 8000 miles away and nothing like as loud in here as on the N0SS recordings. Today I tried listening to VP6DX on 80 with ATT set to OFF and the noise was painful. Hitting PRE made it far worse. NR did not really help, but with ATT ON, I worked them on 80m CW with just 10w The antenna here is a 20m wire bisquare, bottom corner about 7 feet off the ground and firing vertically upwards on 80. As the VP6 op said when I told him OUCH But the mojo sure works, because I also made it on 80 with 100w of SSB ! Again this was with ATT ON. PRE seems best left for the HF bands, 20m and up. But ATT is a powerful option when all else fails. John G3JAG K3 #107 K2 # 609 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 External Reference input
On Fri, 2008-02-22 at 20:24 -0500, Paul Christensen wrote: Is there interest among the group for the necessary parts to input a disciplined 10MHz signal to control frequency? We all know there is a place holder on the back panel, but Gary just told me there were no plans. I'm really hoping for this option. I use a Hewlett-Packard 58540A GPSDO for use with my IC-7800. Long-term accuracy when GPS-locked is typically 1E-12. That's essentially the same accuracy as the atomic cesium beam standards used on board the GPS satellites. The 7800 has some decimation error issues and can be off from the standard by up to 0.1Hz A simple demo of this is to put main and sub RX on the same signal on the same antenna and listen in stereo for the slow phasing that goes on between the 2 receivers, it's horrid and makes it a very poor diversity receiver. It's due to the IF of the sub RX being separated by 100Khz this leads to a difference in the decimation errors between the main and Sub RX. Shame on Icom for getting this so wrong. I Don't know if decimation errors will limit the accuracy of the K3 when using an external ref but I would not be surprised if this was the case. Just because you can attach an external ref does not mean that your RX/TX is now as accurate as the reference, there are other factors that may limit overall system accuracy My Racal 3702 is on the other hand a true diversity receiver, both receivers are truly phase locked at all stages to any supplied reference, external or internal. It's a joy to use for diversity reception and true diversity reception is a fantastic tool for tropical band BC dxing One other issue is that the 7800 simply replaces it's internal oscillator with the external source so that external source needs to have excellent Phase noise performance if you are to avoid degrading the performance of the radio. This will be an even bigger issue with the K3 at narrow spacings. IF Elecraft get to market with the external ref port I'll probably be adding it. I have a collection of GPS locked oscillators, 2 of them are rubidium based I also have a home brew IPv6 stratum 1 NTP server at balrog.home.minish.org If you have IPv6 Internet connectivity try it out and let me know how you get on 73 Brendan EI6IZ -- Don‘t complain. Nobody will understand. Or care. And certainly don‘t try to fix the situation yourself. It‘s dangerous. Leave it to a highly untrained, unqualified, expendable professional. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Auto CW function
Hello all, is there some support for request for AUTO CW ON/OFF firmware function as some rigs are having (FT-897)? It means SSB mode choosed, RX in SSB mode normally but when Key is activated (touched for CW sending) there is automatic shift of carrier and CW is transmitted (as in standard CW mode, SEMI or FULL-BK etc.) then going back to SSB mode for RX. Hope you understand :-) This is very useful during UHF/SHF contests (with transverters) when calling CW CQ but takers are calling in SSB (mostly or very often). No need for switching mode (you have SSB all the time) and to touch dial knob to reply etc. Very comfortable and (I hope) not so serious for firmware. I know this is very special and on HF bands there is probably no reason for such function, my experience is based on serious contesting on higher bands (1296 and up). If this is already somewhere inside and I missed something and my sorry for this Q. 73! Lexa, ok1dst K3 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] OT: Attn CPU gurus - help me
I want to hook my K3's up to the latest skimmer software along with computer control of the rig, etc. and of course via the LP-Pan when it is available (soon). My query is about the computer processor and associated elements. Currently, I am reading that the way to go for skimmer (192kc bandwidth - not that I need that), is to use a machine with a 3G processor. But that seems to only account for one element of the system rating. My current ham radio computer is a fossil on which I run DOS stuff. But my home computer (this one) is a Pentium 4, 3.0 Gig. Sounds right, but.. When I look at the new machines (which seem relatively cheap for what you get), I see: Core 2 Quad Q6600 Core 2 Duo Pentiuim Dual Core Celeron Athlon 64 etc. Then I see speeds for each of the above, NONE of which goes up to 3.0 gig. Just because my current processor has the 3.0 gig label, I am assuming that these newer releases are even faster, despite the lower clock rate. For the app's that I'm looking at, DOES CLOCK RATE RULE or does this other stuff count too? I also see big variables on the L2 Cache: 2MB, 4MB, 8MB - relatively speaking, how important are these compared to the other factors? And then there is the Front Side Bus speed: 800, 1333. Weird that the Core 2 Quad (which sounds like the best to me) has a FSB of 1066 (not the fastest). And finally, there is the clock speed, which for most of the above is 2.2, 2.33, 2.66 gig (again, not reaching 3.0). How do I put all this together? Again, for MY apps, which figure of merit is most important? Or do I just multiply them all together? :-) Reminder: CPU gurus only need respond. I prefer direct replies, but I assume that this topic might be of wide interest to the Elecraft group...YOUR CHOICE if you respond to the list or just to me. THANKS A TON! de Doug KR2Q Expert on DRGs, not CPUs http://en.wikipedia.org/wiki/Diagnosis-related_group this page is rather outdated ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Auto CW function
This is something I liked with my FT-897, I think it is a good idea but probably not the highest prio on my list. 73 de Björn /SM0MDG On 080223 12:41 , Alexandr Kobranov [EMAIL PROTECTED] wrote: Hello all, is there some support for request for AUTO CW ON/OFF firmware function as some rigs are having (FT-897)? It means SSB mode choosed, RX in SSB mode normally but when Key is activated (touched for CW sending) there is automatic shift of carrier and CW is transmitted (as in standard CW mode, SEMI or FULL-BK etc.) then going back to SSB mode for RX. Hope you understand :-) This is very useful during UHF/SHF contests (with transverters) when calling CW CQ but takers are calling in SSB (mostly or very often). No need for switching mode (you have SSB all the time) and to touch dial knob to reply etc. Very comfortable and (I hope) not so serious for firmware. I know this is very special and on HF bands there is probably no reason for such function, my experience is based on serious contesting on higher bands (1296 and up). If this is already somewhere inside and I missed something and my sorry for this Q. 73! Lexa, ok1dst K3 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Auto CW function
Yes, Bjorn, it is marginal but when you plan to replace all 897 around used as I/F for microwaves... :-) Seriously - I know several other mostly UHF/SHF contesters - this is iportant function for them -- and they did not sent order for K3 yet ;-) 73! L. -dst- Björn Mohr napsal(a): This is something I liked with my FT-897, I think it is a good idea but probably not the highest prio on my list. 73 de Björn /SM0MDG On 080223 12:41 , Alexandr Kobranov [EMAIL PROTECTED] wrote: Hello all, is there some support for request for AUTO CW ON/OFF firmware function as some rigs are having (FT-897)? It means SSB mode choosed, RX in SSB mode normally but when Key is activated (touched for CW sending) there is automatic shift of carrier and CW is transmitted (as in standard CW mode, SEMI or FULL-BK etc.) then going back to SSB mode for RX. Hope you understand :-) This is very useful during UHF/SHF contests (with transverters) when calling CW CQ but takers are calling in SSB (mostly or very often). No need for switching mode (you have SSB all the time) and to touch dial knob to reply etc. Very comfortable and (I hope) not so serious for firmware. I know this is very special and on HF bands there is probably no reason for such function, my experience is based on serious contesting on higher bands (1296 and up). If this is already somewhere inside and I missed something and my sorry for this Q. 73! Lexa, ok1dst K3 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 noise B and R
I don't know what level QRN crashes add to the general noise level: it would be interesting to know what difference the roofing filters add to the dsp filter in these condx. David G3UNA The local noise level on 80 shows up as anywhere up to S7or 8. With ATT ON, it still shows on the meter, but is nothing like as aggressive. On SSB I use the stock filter and leave other things alone most of the time. Two things: First: ATT drops the noise and apparently (it must be a bit of an illusion) leaves the signal. It seems that ATT ON limits the peak effect of noise crashes. Not very scientific, I'm afraid. You just play and see whats best at the time ! Second: AGC OFF results in a significant drop in strength of everything. This is not what I am used to, so I have AGC ON all the time, usually set to FAST, but there can be a problem with if there is a strong signal on frequency. The transition from TX to RX and vice versa can be marked by loud pops and/or clicks. I believe this is to do with the way the DSP and AGC systems respond and I understand, very much off record, that a mod for the AGC behaviour is in the works. In fact I suspect it is already in current production K3s, like another mod to fix a keying characteristic glitch in an early batch where an overly-large capacitor was installed in error. I did that mod myself. If I ever get the info (and parts) I will do the AGC mod and see how it goes, but the general advice I got was to leave well alone unless you are sure you need the mod ! Marvellous radio; the best receiver I have had, even better than my much-modified TenTec Omni-5. But better antennas would help. and I'm adding a 200Hz roofing filter when I get one. 73 John G3JAG On Saturday 23 February 2008 11:25:25 you wrote: What noise levels were you receiving? It would be interesting to know what they were before and after you selected filters, but you were probably so amazed with your contacts withVP6DX that sort of stuff went out of the window : o ) Do you operate with or without AGC, full rf gain? Sorry for the 3rd degree, just getting a handle on real band condx with weak signal reception : o / I will be severely limited on antennas as well. David G3UNA ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] auto CW function
I'd like to join Alexandr and Bjorn in support of this feature. This is one of the most useful features on the 897 and has proved to be invaluable when on dxpeditions. Invariably, you'll be on SSB running a pileup and someone will be calling you on CW; it is SO handy to just hit the key and make a reply. Anyhow, it would be a great future addition, IMO. 73 Dick, K5AND 00050 (and six meter nut) No virus found in this outgoing message. Checked by AVG. Version: 7.5.516 / Virus Database: 269.20.9/1293 - Release Date: 2/22/2008 9:21 AM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KPA100 going into oscillation...help!
Hi All, My K2 is serial no. 4688. I have just purchased and built the latest spec KPA100 unit for it. The manual for the KPA100 suggests modifications are required for K2's with serial nos 4059 or lower. As my serial number is higher, I assumed all would be well. Firstly the KPA100 performs well on all bands using CW mode. Recently I tried SSB and found that the PA is going into oscillation when on 40m. Setting the power out to 20W and speaking into the microphone produces 100W output peaks accompanied with a low buzzing sound in the speaker on audio peaks. Varying the power control brings it back into line only to start misbehaving again after a few more words are spoken or if the mode is cycled back round to LSB or you switch off then on again. This happens when connected to a dummy load with no other connections other than the mike and power supply. I changed out the power supply, but the same problem exists. I have done an extensive search of the internet to try and find solutions: 1) I have ensured gnd continuity from the KPA100 to every part of the K2 chassis. 2) I covered the hole in the shield near the pl259 with copper tape and ensured gnd continuity. 3) I saw the article about installing the 270 ohm metal film resistor to increase Zin, but my K2 circuit is newer than the authors and I haven't seen an updated version. 4) I have ensured the 2 lugs from the antenna socket to the shield are good. 5) I have removed the KPA100 from the K2 entirely and the same problem exists. Does anyone know the solution or recognise these symptoms? Douglas Maxwell GM0ELP ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K2-Rework Elimination?
I've ordered a K-2 and contemplate adding the KSB2 and the KAT2 someday. Most likely will not implement any other options, mostly operate QRP CW. I'd appreciate comments about whether the re-work eliminator kits would be appropriate, or just an unnecessary expense. 72, Curt KB5JO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KPA100 going into oscillation...help!
Douglas, Perhaps the issue described in this elecraft thread describes your issue and provides an answer: http://www.nabble.com/K2-100-kaputt-to14081805.html#a14081805 Good Luck, Robie - AJ4F On Sat, Feb 23, 2008 at 7:01 AM, Douglas Maxwell [EMAIL PROTECTED] wrote: Hi All, My K2 is serial no. 4688. I have just purchased and built the latest spec KPA100 unit for it. The manual for the KPA100 suggests modifications are required for K2's with serial nos 4059 or lower. As my serial number is higher, I assumed all would be well. Firstly the KPA100 performs well on all bands using CW mode. Recently I tried SSB and found that the PA is going into oscillation when on 40m. Setting the power out to 20W and speaking into the microphone produces 100W output peaks accompanied with a low buzzing sound in the speaker on audio peaks. Varying the power control brings it back into line only to start misbehaving again after a few more words are spoken or if the mode is cycled back round to LSB or you switch off then on again. This happens when connected to a dummy load with no other connections other than the mike and power supply. I changed out the power supply, but the same problem exists. I have done an extensive search of the internet to try and find solutions: 1) I have ensured gnd continuity from the KPA100 to every part of the K2 chassis. 2) I covered the hole in the shield near the pl259 with copper tape and ensured gnd continuity. 3) I saw the article about installing the 270 ohm metal film resistor to increase Zin, but my K2 circuit is newer than the authors and I haven't seen an updated version. 4) I have ensured the 2 lugs from the antenna socket to the shield are good. 5) I have removed the KPA100 from the K2 entirely and the same problem exists. Does anyone know the solution or recognise these symptoms? Douglas Maxwell GM0ELP ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3: small improvement in my life
Lots to get familiar with in the K3 and if you're like me, not a lot of time. The other day I found the bit about the Iambic A vs B in the manual and switched it to B since I had a hard sending some letters for RTTY with A. Today, I actually tried it out (on cw, not RTTY). Oh my...now THAT'S what I'm talking about! Just beautiful!! So, my trusty old KC Keyer (gee. how old is THAT?) is now being retired. One less thing to clutter the desk and one less thing to plug into the wall. VERY NICE! de Doug KR2Q It's often the little that count the most...especially when you start adding them up. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] K3 External Reference input
You bet! That is one of the reasons I bought a K3. Jerry AI6L -Original Message- From: Philip Theis [mailto:[EMAIL PROTECTED] Sent: Friday, February 22, 2008 4:50 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K3 External Reference input Is there interest among the group for the necessary parts to input a disciplined 10MHz signal to control frequency? We all know there is a place holder on the back panel, but Gary just told me there were no plans. In April Wayne said it was coming but the price hadn't been set. Just wondering if anyone else out there has an interest like I do. 73, Phil K3(352)TUF ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KPA100 going into oscillation...help!
Douglas, If your 'latest spec' KPA100 was shipped from Aptos after January 2007, then indeed you do have the latest - check all your construction work. If it was shipped before January 2007, check the value of C31. The new design requires a 0.22 uF capacitor. Are you certain it is an oscillation? If so, can you determine the frequency? There is a difference between an oscillation and simply going to the maximum power output, and the direction for attacking your problem depends on the correct answer to that question. Do you have any mods to the KSB2 board - in particular the KI6WX increased RF gain mod. If that is present with the KPA100, the SSB ALC can be overdriven (but there is an easy fix to the SSB ALC circuit). 73, Don W3FPR Douglas Maxwell wrote: Hi All, My K2 is serial no. 4688. I have just purchased and built the latest spec KPA100 unit for it. The manual for the KPA100 suggests modifications are required for K2's with serial nos 4059 or lower. As my serial number is higher, I assumed all would be well. Firstly the KPA100 performs well on all bands using CW mode. Recently I tried SSB and found that the PA is going into oscillation when on 40m. Setting the power out to 20W and speaking into the microphone produces 100W output peaks accompanied with a low buzzing sound in the speaker on audio peaks. Varying the power control brings it back into line only to start misbehaving again after a few more words are spoken or if the mode is cycled back round to LSB or you switch off then on again. This happens when connected to a dummy load with no other connections other than the mike and power supply. I changed out the power supply, but the same problem exists. I have done an extensive search of the internet to try and find solutions: 1) I have ensured gnd continuity from the KPA100 to every part of the K2 chassis. 2) I covered the hole in the shield near the pl259 with copper tape and ensured gnd continuity. 3) I saw the article about installing the 270 ohm metal film resistor to increase Zin, but my K2 circuit is newer than the authors and I haven't seen an updated version. 4) I have ensured the 2 lugs from the antenna socket to the shield are good. 5) I have removed the KPA100 from the K2 entirely and the same problem exists. Does anyone know the solution or recognise these symptoms? Douglas Maxwell GM0ELP ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 External Reference input
I wonder how Elecraft planned to implement the External Synch Module. Especially in light of the non-harmonic relationship of 10Mhz and 49.38Mhz. Would some recalibration and firmware changes be required? 73 jim ab3cv ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] ESD Mat - Helpful Hint
I am sure others may have discovered this, but I will mention it anyway. It takes about one second to find out that a wrist strap, and its lead, are frequently in the way. I solved that problem by sliding the wrist band halfway up my forearm. Unfortunately, it doesn't remond you to take it off when you get up from the table or put it back on when you sit down. ;-) 72, Neal WA6OCP K3/10/305 Dave Agsten wrote: Paul, I picked up an ESD mat at Radio Shack. I was a nice size, had pockets for tools to stay in, the wrist strap on a coiled cable and a 6 foot or so connection to ground either via and alligator clip or banana plug. The biggest problem was remembering to disconnect the wrist strap ( via a banana plug ) when I got up from the table. :-) It was $24.95. The first employee in the store didn't have a clue as to what I was asking for.no surprise there. 73, Dave N8AG k3/100 #414 Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com -- View this message in context: http://www.nabble.com/RE%3A-ESD-Mat-tp15648544p15652833.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 External Reference input
The 7800 has some decimation error issues and can be off from the standard by up to 0.1Hz A simple demo of this is to put main and sub RX on the same signal on the same antenna and listen in stereo for the slow phasing that goes on between the 2 receivers, it's horrid and makes it a very poor diversity receiver. That's likely why Icom has yet refused to add auto Main/Sub tracking. OTOH, one of the first tests I conducted was to sync the 7800's Main and Sub receivers and sample the audio into an oscilloscope in X-Y mode to establish a Lissajous pattern. Any phase shift is represented by a change in the pattern from a straight line to a fuzzy line, then to what appears as a fuzzy ball. I could leave the 7800 running for days and not notice any phase shift unless I induced the phase shift (e.g., moving the sub Rx by 1 Hz, for example). Paul, W9AC ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] MP3 Demo of the K3's Noise Blanker under some rather severe conditions
As someone who frequently has to live with high line noise levels up to S8/9 at times, that's particularly good news! Thanks for posting it, a very impressive demonstration. My K3 hopefully won't be too many weeks now! 73 Stephen G4SJP On 23/2/08 01:59, Tom Hammond [EMAIL PROTECTED] wrote: Folks: This afternoon my line noise was particularly bad, even giving VP6DX a run for its money on some bands. Just for the heck of it, I punched [NB] on the K3 and... there was VP6DX, and... the noise was GONE!!! This was some of stronger line noise I've had out here (in the sticks) for quite a while. I was so impressed that I mad an MP3 of the differences without and with the NB enabled. The MP3 file can be found at: http://www.n0ss.net/k3_nb_demo_22feb2008.mp3 NOTE: If you choose to manually type this URL into your browser, be aware that the blank spaces are filled with UNDERSCORE _ characters and NOT blank spaces as might appear above. If you can't access the file from this link, go to www.n0ss.net, select the K3-Specific web page (just being built, so there's virtually NOTHING on it other than this file) and click on the file. The source bands for the recording were 15m and 17m, and among others, VP6DX was one of the 'sample' stations. I used a fairly wide bandwidth in order to give a worst-case scenario for the KNB3. Most of the blanking was due to the IF blanker, with just a little DSP NB thrown in for good measure. Nice work Wayne Lyle! 73, Tom Hammond N0SS ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] K3 Kit vs Ready Built
Paul, I am waiting for my K3 to arrive. I ordered my ESF mat and wrist strap form Compusa online. They seemed reasonably priced Mike, N4GW -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Paul Christensen Sent: Friday, February 22, 2008 8:54 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 Kit vs Ready Built Check out this site. A lot of experienced builders put their comments here And from the appearance of the user build experiences, many folks are using ESD mats for K3 assembly - and to minimize shop rash. Any recommendations for purchase? Paul, W9AC ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] re: Your Elecraft K3 slide show
Hi Lee, I am the owner of K3 S/N 00409. I very much enjoyed your slide show of your assembly, best I've seen so far, excellent. Who took the photos of you at work? Mine went together without a hitch, very well thought out assembly. I really enjoy using it now that I'm getting used to the controls. I have worked quite a bit of DX including VP6DX on 20 meter SSB. Even worked quite a few on the 160 meter band last night using my 135 ft. open wire fed inverted V. I have never tried 160 meters before with other rigs I have here. Have fun! 73, Bob VE3XM Wellesley, ON K2 S/N 04575 K2/100 S/N 04031 K3/100 S/N 00409 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] that mojo thing
I've been a bit suspicious about that mojo thing, but working Ducie Island first call with K3 #328 to indoor dipoles does make me wonder . 73 Chris, MØPSK ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] What's your K3?
If you have a K3 and are not on this list: http://www.zerobeat.net/mediawiki/index.php/K3_Serial_Numbers Would you drop me an email? Include your serial number, order date, arrival date, name and qth if possible. I'll add you to the list. t u ! ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Elecraft K3 Why Buy a Kit?
Dave, Why not buy a kit, lots of fun assembling a K3 plus one saves money. I'm retired every penny counts. 73, Bob VE3XM K2 S/N 04575 K2/100 S/N 04031 K3/100 S/N 00409 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] OT: Attn CPU gurus - help me
Hi Doug You've got some real legitimate questions that a lot of us non-gurus would like to hear the answers to. If you get a lot of your replies direct, could you summarize them in a post to us masses? Thanks and 73 Bob N6WG - Original Message - From: DOUGLAS ZWIEBEL [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Saturday, February 23, 2008 3:49 AM Subject: [Elecraft] OT: Attn CPU gurus - help me I want to hook my K3's up to the latest skimmer software along with computer control of the rig, etc. and of course via the LP-Pan when it is available (soon). My query is about the computer processor and associated elements. Currently, I am reading that the way to go for skimmer (192kc bandwidth - not that I need that), is to use a machine with a 3G processor. But that seems to only account for one element of the system rating. My current ham radio computer is a fossil on which I run DOS stuff. But my home computer (this one) is a Pentium 4, 3.0 Gig. Sounds right, but.. When I look at the new machines (which seem relatively cheap for what you get), I see: Core 2 Quad Q6600 Core 2 Duo Pentiuim Dual Core Celeron Athlon 64 etc. Then I see speeds for each of the above, NONE of which goes up to 3.0 gig. Just because my current processor has the 3.0 gig label, I am assuming that these newer releases are even faster, despite the lower clock rate. For the app's that I'm looking at, DOES CLOCK RATE RULE or does this other stuff count too? I also see big variables on the L2 Cache: 2MB, 4MB, 8MB - relatively speaking, how important are these compared to the other factors? And then there is the Front Side Bus speed: 800, 1333. Weird that the Core 2 Quad (which sounds like the best to me) has a FSB of 1066 (not the fastest). And finally, there is the clock speed, which for most of the above is 2.2, 2.33, 2.66 gig (again, not reaching 3.0). How do I put all this together? Again, for MY apps, which figure of merit is most important? Or do I just multiply them all together? :-) Reminder: CPU gurus only need respond. I prefer direct replies, but I assume that this topic might be of wide interest to the Elecraft group...YOUR CHOICE if you respond to the list or just to me. THANKS A TON! de Doug KR2Q Expert on DRGs, not CPUs http://en.wikipedia.org/wiki/Diagnosis-related_group this page is rather outdated ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 Kit vs Ready Built
I went down to my local Shadio Rack and bought one of those ESD mats. But I can't convince myself that it works. If I touch my meter probes to the mat I measure infinity ohms, no matter how close together the two probes are. I know the meter works - If I hold one probe tip in each hand the meter measures a few 10's of megohms. Al N1AL There have been quite a few products mentioned in previous threads, and are in the archives. Examples include Radio Shack and TigerDirect.com. -- Original message -- From: Paul Christensen [EMAIL PROTECTED] And from the appearance of the user build experiences, many folks are using ESD mats for K3 assembly - and to minimize shop rash. Any recommendations for purchase? 73, Mike KW1ND ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] OT: How to install LED bulb in Yaesu G-800DXA
How to I replace the 12 volt incandescent bulb in my Yaesu G-800DXA rotor control unit with an LED bulb? The incandescent bulb is a fuse looking bulb with wires out each end. I tried putting an LED in, it worked for a while then went out. Do I need a resistor in the circuit? . Thanks and 73, . Joe N9VX ___ No banners. No pop-ups. No kidding. Make My Way your home on the Web - http://www.myway.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] Back ordered filters
Carl Clawson wrote: I just got my Lisagram yesterday (ordered June 28) including a 500 Hz filter on the invoice. It is not shown as back-ordered. You might give Lisa an email and see what's up. She's busy enough that a mistake or two are bound to happen. Are the FM filters shipping? The shipping status page doesn't seem to have been updated, and still says 20 February. I don't mind waiting a few more days to save Elecraft some shipping costs by sending both filters together. - Julian, G4ILO K3 s/n: 222 K2 s/n: 392 G4ILO's Shack: www.g4ilo.com Zerobeat Ham Forums: www.zerobeat.net/smf -- View this message in context: http://www.nabble.com/Back-ordered-filters-tp15607212p15654261.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] OT: How to install LED bulb in Yaesu G-800DXA
Most 'ordinary' leds need about 20mA. Calculate a series resistor assuming the led will have around 1.5 to 2V or so across it (it depends on colour). You can find out what the actual voltage drop is after you've fitted the resistor by putting your voltmeter across it. If the supply to the lamp was ac, then you will need a diode (any small type) across the led in the opposite direction to prevent it blowing with too much voltage: most are rated around 5V Let's say you have a 24V ac supply, the led will conduct in one direction and the protection diode in the other, so, it doesn't matter which is which. Start with a resistor of 1k, power rating at least 1W, it will get fairly hot. The led will run cool. If you have a high intensity led, it will be bright with perhaps 2mA, so do the sums :o) David G3UNA How to I replace the 12 volt incandescent bulb in my Yaesu G-800DXA rotor control unit with an LED bulb? The incandescent bulb is a fuse looking bulb with wires out each end. I tried putting an LED in, it worked for a while then went out. Do I need a resistor in the circuit? . Thanks and 73, . Joe N9VX ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2-Rework Elimination?
Hi Curt, This topic has been discussed quite extensively on the reflector. Try a search here and I'm sure you'll find some answers. http://www.mail-archive.com/elecraft@mailman.qth.net/maillist.html 73, Tony W7GO Curt wrote: I've ordered a K-2 and contemplate adding the KSB2 and the KAT2 someday. Most likely will not implement any other options, mostly operate QRP CW. I'd appreciate comments about whether the re-work eliminator kits would be appropriate, or just an unnecessary expense. 72, Curt KB5JO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Elecraft K3
Hi Barry, Buy the kit, very easy to assemble, be sure to read every instruction two or three times and you won't go wrong. You will also save money, not only the extra price charged for the assembled K3 but your VAT and other import fees. I had to pay $297.00 to the Government in Goods and Services Tax and Provincial Sales Tax. IMHO anyway. 73, Bob VE3XM K2, K2/100, K3 #409 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] OT: How to install LED bulb in Yaesu G-800DXA
Joe: How to I replace the 12 volt incandescent bulb in my Yaesu G-800DXA rotor control unit with an LED bulb? The incandescent bulb is a fuse looking bulb with wires out each end. I tried putting an LED in, it worked for a while then went out. Do I need a resistor in the circuit? I replaced the single incandescents in my G-1000DSX with (2) blue LEDs... one on each side of the top corners. I used a bit of silicone glue to hold them in place. I really need to replace them with something BRIGHTER though... the blue is neat looking, but it's a bit too dim sometimes... maybe some high-output blues might work better. Were I to do it again, I'd probably put LEDs in all three corners, OR work to find some LEDs which have a VERY WIDE viewing angle (unlike those I'm currently using). I've tried filing flat the front lens in order to 'spread' out the light and to help keep it from being quite so much of a 'spot'... this has helped, but I'm sure there are better lenses available (probably higher cost, but better nonethe- less. The OEM incandescent in my rotor box had become hot enough that it slightly melted and deformed the (originally clear) plastic faceplate... I had to do some 'cosmetic' work with a DremelTool before I got it back in good working shape. In fact, I had to 'smooth' out the damaged (and later ground-flat) edge where the bulb was by literally applying a flame from a small butane torch, to melt the plastic on the edge and then allow it to cool, leaving a nice smooth edge to act as a light pipe for the rest of the dial. 73, Tom Hammond N0SS ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Sidetone in line out connector?
Has anyone figured out if it is possible to get sidetone routed to the line out connector when keying the radio? It would be handy to hear keying this way too. 73 de Björn /SM0MDG ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Sidetone in line out connector?
Björn: Has anyone figured out if it is possible to get sidetone routed to the line out connector when keying the radio? It would be handy to hear keying this way too. I am pretty certain that this IS on the list of things to do. I think it is (or must be) a DSP function. 73, Tom Hammond N0SS ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] K3 External Reference input
Me too! The external Ref is very important to my QRSS QRPp very weak signal work to maintain my frequency tolerance to less then .1 hz. I am currently using an HP 3325A Synthesizer and HP Z3801A GPS Ref to put a stable and accurate signal on the air! Also have my RX340 referenced to the Z3801A Not having the external reference opt is a big setback! I hope the ability to reduce the output power down to -15 dBm using the KXV3 is still possible? Larry Putman WB3ANQ Pasadena, Maryland FM19rc www.wb3anq.com - Original Message From: Jerry T. Dowell [EMAIL PROTECTED] To: Philip Theis [EMAIL PROTECTED]; elecraft@mailman.qth.net Sent: Saturday, February 23, 2008 9:17:39 AM Subject: RE: [Elecraft] K3 External Reference input You bet! That is one of the reasons I bought a K3. Jerry AI6L -Original Message- From: Philip Theis [mailto:[EMAIL PROTECTED] Sent: Friday, February 22, 2008 4:50 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K3 External Reference input Is there interest among the group for the necessary parts to input a disciplined 10MHz signal to control frequency? We all know there is a place holder on the back panel, but Gary just told me there were no plans. In April Wayne said it was coming but the price hadn't been set. Just wondering if anyone else out there has an interest like I do. 73, Phil K3(352)TUF Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 filter trade?
This is perhaps a long shot, but anybody out there want to trade their narrow 1.8Khz K3 filter for a 2.8Khz filter? Please reply off list. 73, Barry N1EU ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] OT: How to install LED bulb in Yaesu G-800DXA
How to I replace the 12 volt incandescent bulb in my Yaesu G-800DXA rotor control unit with an LED bulb? The incandescent bulb is a fuse looking bulb with wires out each end. I tried putting an LED in, it worked for a while then went out. Do I need a resistor in the circuit? Joe, Yes, the value of series limiting resistor is actually highly depended on the color of the LED. A typical red LED requires between 15-20 mA to achieve full brightness and a corresponding forward voltage drop of about 1.7 VDC. On the other hand, some super white and blue LEDs have forward voltage (Vf) drops near 4.0 VDC. I would first measure your 12VDC supply and ensure it is really 12 VDC and not some other value. Once this value is known, you are ready to proceed with your computations: To compute the value needed, subtract the Vf (forward voltage) from the measured supply voltage. For a red LED, this value would be close to: 12.0V-1.7V = 10.3 VDC (This represents the voltage drop across the resistor you are solving for) Next, using Ohm's law, divide the resulting resistive voltage drop by the current required to achieve full red illumination: 10.3V/20 mA = 10.3V/0.02 A = 515 ohms. Since 515 ohms is not a standard value for 5% tolerance resistors, pick one close -- like 560 ohms. You now have a properly operating LED that will last nearly forever, provided the supply voltage remains reasonably constant. But what if you want a super bright white or blue LED? Typically, the Vf value will be close to 4.0 VDC. So, let's solve for the correct resistor value needed for use with a super-bright LED: 12.0V - 4.0V = 8VDC. Next, using Ohm's law, divide the resistive voltage drop by the current required to achieve full white illumination: 8.0V/20mA = 8.0/0.02 A = 400 Ohms. Again, find a 5% resistor close to 400 Ohms -- like 390 Ohms. But you may ask, how do I know the real Vf value for the LED? Well, you can experiment and find it or more easily...when you purchase an LED from Radio Shack, Mouser, Allied, Newark, Digi-Key, etc., the Vf value will always be stated on the blister pack or the manufacturer's data sheet. Use that Vf value. Now, you may also be asking about the resistor wattage size. Let's use Watt's law to calculate the power dissipation of the red LED's current-limiting resistor... If we choose a 560 Ohm resistor, we can closely compute the dissipation by squaring the current (20 mA), and multiplying it by the resistor value (recall the target value was 515 Ohms, but we substituted 560 and that's close enough). Here goes: 20 mA = 0.02A. Then, 0.02^2 x 560 = 0.22 watts. At a minimum, a 1/4 watt resistor should be used, or even a 1/2 watt resistor since were getting to a marginal break point for the 1/4 watt resistor. If your plan is to use more than one LED to illuminate the meter face, then you can use these examples above for each LED. On the other hand, it is possible to stack LEDs in series and use one current limiting resistor but you will need to re-work all the calculations. It should actually be an interesting exercise to go through the computations and compare and contrast both ways. That's it. To summarize: 1) Measure the true supply voltage; 2) Acquire the proper Vf voltage from the LED's data sheet; 3) Always observe correct LED polarity; 4) Choose a resistor close in value; 5) Choose a wattage of resistor that is at least equal to the amount being dissipated by the resistor. Going up in wattage value in marginal cases is good engineering practice. Paul, W9AC ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] software to load K3 memories,
did I miss something ... is there a 3rd party software to load the memories of the k3 I looked at HRD but didn't find that facility. bill ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] software to load K3 memories, clarified question
did I miss something ... is there a 3rd party software to load the memories of the k3 Not just the keyer memories but the frequencies with all the parameters. bill ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 Output levels
Hi, I asked this question here before but no one anawered it. Maybe it was considered a dumb question. Can the power output level of the K3/100 be individually programmed for different bands? For example to accomodate a low drive level 6M amplifier. I doubt it but thought I would ask as I cannot find anything in the literature on this. It would be nice so that when you QSY'ed for a 6M band opening you would not over drive your 6M amp in the excitement. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Reverse ALC
I am looking for a simple solution to reverse the K3 ALC input to a negative going ALC circuit. If you have interfaced your K3 with any amp using negative ALC, please let me know your solution. 73 de Björn /SM0MDG ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 Output levels
Harry, You could develop a macro for this and use it in Command Mode with the K3 Utility. Command Mode is a very useful facility for this sort of thing. Currently, power level sticks across bands and you'd have to reset it by hand for 6m, or develop a standard set of macros to preset power level, mode, Lo/Hi, etc. for given bands of interest. matt, W6NIA k3 # 24 On Sat, 23 Feb 2008 13:22:05 -0500, you wrote: Hi, I asked this question here before but no one anawered it. Maybe it was considered a dumb question. Can the power output level of the K3/100 be individually programmed for different bands? For example to accomodate a low drive level 6M amplifier. I doubt it but thought I would ask as I cannot find anything in the literature on this. It would be nice so that when you QSY'ed for a 6M band opening you would not over drive your 6M amp in the excitement. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KPA100 going into oscillation...help!
Hi Don, My KPA100 was shipped in October 07 and the value of C31 is .22uF(u22J63) 63v, Part no . E530295. I'm not sure about the oscillation, but my symtoms sound very similar to the old oscillation problems documented on the web i.e. 40m/SSB/KPA100 combination for the problem to manifest. The KPA100 works 100% in CW on all bands. I can vary the power up and down and it behaves accordingly. This leads me to believe the KPA100 is constructed correctly. When the KPA100 is bypassed at =10w there are no problems. When the KPA100 is in line i.e. 11w on 80,20,15 10m all is well and I can play quite happily. When I switch bands to 40m SSB @11w and speak into microphone I get 100w out on voice peaks together with my voice audible through the speaker. It will stay in this conditon until I turn the power control all the way up and then back down to 11w whilst talking into the microphone. It then works 100% until I either touch the mode button (by cycling back round to L) or power the radio off then on, whereupon in both cases it reverts to the 100w voice peak condition. My KSB2 board was bought together with my K2 in June 05 and no modifications have been carried out on it since then. I didn't think it had anything to do with the ALC circuit as the radio performs 100% on all other bands and when the KPA100 is bypassed on 40m. Thanks for the help. Hope this info helps a bit. Doug GM0ELP - Original Message - From: Don Wilhelm [EMAIL PROTECTED] To: Douglas Maxwell [EMAIL PROTECTED] Cc: elecraft@mailman.qth.net Sent: Saturday, February 23, 2008 2:24 PM Subject: Re: [Elecraft] KPA100 going into oscillation...help! Douglas, If your 'latest spec' KPA100 was shipped from Aptos after January 2007, then indeed you do have the latest - check all your construction work. If it was shipped before January 2007, check the value of C31. The new design requires a 0.22 uF capacitor. Are you certain it is an oscillation? If so, can you determine the frequency? There is a difference between an oscillation and simply going to the maximum power output, and the direction for attacking your problem depends on the correct answer to that question. Do you have any mods to the KSB2 board - in particular the KI6WX increased RF gain mod. If that is present with the KPA100, the SSB ALC can be overdriven (but there is an easy fix to the SSB ALC circuit). 73, Don W3FPR Douglas Maxwell wrote: Hi All, My K2 is serial no. 4688. I have just purchased and built the latest spec KPA100 unit for it. The manual for the KPA100 suggests modifications are required for K2's with serial nos 4059 or lower. As my serial number is higher, I assumed all would be well. Firstly the KPA100 performs well on all bands using CW mode. Recently I tried SSB and found that the PA is going into oscillation when on 40m. Setting the power out to 20W and speaking into the microphone produces 100W output peaks accompanied with a low buzzing sound in the speaker on audio peaks. Varying the power control brings it back into line only to start misbehaving again after a few more words are spoken or if the mode is cycled back round to LSB or you switch off then on again. This happens when connected to a dummy load with no other connections other than the mike and power supply. I changed out the power supply, but the same problem exists. I have done an extensive search of the internet to try and find solutions: 1) I have ensured gnd continuity from the KPA100 to every part of the K2 chassis. 2) I covered the hole in the shield near the pl259 with copper tape and ensured gnd continuity. 3) I saw the article about installing the 270 ohm metal film resistor to increase Zin, but my K2 circuit is newer than the authors and I haven't seen an updated version. 4) I have ensured the 2 lugs from the antenna socket to the shield are good. 5) I have removed the KPA100 from the K2 entirely and the same problem exists. Does anyone know the solution or recognise these symptoms? Douglas Maxwell GM0ELP -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.20.9/1294 - Release Date: 2/22/2008 18:39 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Re: Auto CW function
I think this was covered in the FAQ on 6m topics: Is it possible to have automatic VFO offset when switching from SSB to CW to SSB? The VFO offset should be the same as the selected transmit/spotting sidetone frequency. For example, if you are on 50125.00 kHz USB and you switch to CW mode, the VFO automatically switches to 50125.70 kHz (if the specified sidetone frequency is 700 Hz). This puts the audible CW signal in the USB passband. AND Can the K3 be configured to automatically change to CW mode when the key is activated and to SSB when a PTT line is keyed? These features will not be in the initial firmware release, but should be available in the second release. Exact functionality TBD. That was one reason I decided to order a K3 late last year, primarily for UHF and above contesting. I'm not very clear what the second release might mean, but I guess we are talking about V 2.xx rather than an evolution of the current V1.69 code? 73 John G3XDY K2 #4713, K3 ??? - Original Message - From: [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Saturday, February 23, 2008 6:46 PM Subject: Elecraft Digest, Vol 46, Issue 43 Message: 6 Date: Sat, 23 Feb 2008 12:41:47 +0100 From: Alexandr Kobranov [EMAIL PROTECTED] Subject: [Elecraft] Auto CW function To: elecraft@mailman.qth.net Message-ID: [EMAIL PROTECTED] Content-Type: text/plain; charset=ISO-8859-1; format=flowed Hello all, is there some support for request for AUTO CW ON/OFF firmware function as some rigs are having (FT-897)? It means SSB mode choosed, RX in SSB mode normally but when Key is activated (touched for CW sending) there is automatic shift of carrier and CW is transmitted (as in standard CW mode, SEMI or FULL-BK etc.) then going back to SSB mode for RX. Hope you understand :-) This is very useful during UHF/SHF contests (with transverters) when calling CW CQ but takers are calling in SSB (mostly or very often). No need for switching mode (you have SSB all the time) and to touch dial knob to reply etc. Very comfortable and (I hope) not so serious for firmware. I know this is very special and on HF bands there is probably no reason for such function, my experience is based on serious contesting on higher bands (1296 and up). If this is already somewhere inside and I missed something and my sorry for this Q. 73! Lexa, ok1dst K3 *** ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Re: Your Elecraft K3 slide show
Thanks Bob appreciate the comments. Thanks goes to Scott WU2X for taking the the cool shots of me building. Finished the build about 11:30pm and we played till about 2 AM :) Enjoy! Lee WW2DX On Feb 23, 2008, at 10:59 AM, Robert C.Abell wrote: Hi Lee, I am the owner of K3 S/N 00409. I very much enjoyed your slide show of your assembly, best I've seen so far, excellent. Who took the photos of you at work? Mine went together without a hitch, very well thought out assembly. I really enjoy using it now that I'm getting used to the controls. I have worked quite a bit of DX including VP6DX on 20 meter SSB. Even worked quite a few on the 160 meter band last night using my 135 ft. open wire fed inverted V. I have never tried 160 meters before with other rigs I have here. Have fun! 73, Bob VE3XM Wellesley, ON K2 S/N 04575 K2/100 S/N 04031 K3/100 S/N 00409 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 Portable Operation
I am very interested in the K3 for use as a portable rig while camping. Have any of you new owners taken the K3 outside and operated portable on battery power? If so, what were you impressions? Additionally, if I build the 100W model, I can operate at QRP levels on battery with no issues? Thanks! Ken/NO4D -- View this message in context: http://www.nabble.com/K3---Portable-Operation-tp15656862p15656862.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Your Elecraft K3 slide show
Hey Lee: Is this slide show available on the net for download/view? Thanks! Ken/NO4D Lee (WW2DX) wrote: Thanks Bob appreciate the comments. Thanks goes to Scott WU2X for taking the the cool shots of me building. Finished the build about 11:30pm and we played till about 2 AM :) Enjoy! Lee WW2DX On Feb 23, 2008, at 10:59 AM, Robert C.Abell wrote: Hi Lee, I am the owner of K3 S/N 00409. I very much enjoyed your slide show of your assembly, best I've seen so far, excellent. Who took the photos of you at work? Mine went together without a hitch, very well thought out assembly. I really enjoy using it now that I'm getting used to the controls. I have worked quite a bit of DX including VP6DX on 20 meter SSB. Even worked quite a few on the 160 meter band last night using my 135 ft. open wire fed inverted V. I have never tried 160 meters before with other rigs I have here. Have fun! 73, Bob VE3XM Wellesley, ON K2 S/N 04575 K2/100 S/N 04031 K3/100 S/N 00409 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com -- View this message in context: http://www.nabble.com/re%3A-Your-Elecraft-K3-slide-show-tp15653703p15656886.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] that mojo thing
Chris; An Elecraft to Elecraft contact, would that be double Mojo or Mojo squared? Randy K8RDD ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 Portable Operation
Hello Ken The K3 is designed to be a shack radio with access to ac power. It draws quite a bit more current than the K2, which was designed for the type of use you describe. From measurements others have made, it appears the K3 has a resting receive current right around 1 amp, +/- a little bit. Transmit current at 5w is also higher than for the same output with a K2. Yes, the K3 will operate in the field, but the battery consumption will be quite a bit higher than with a comparable K2 at the same power levels. Good luck and 73 Bob N6WG - Original Message - From: Ken Kirkley [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Saturday, February 23, 2008 12:22 PM Subject: [Elecraft] K3 Portable Operation I am very interested in the K3 for use as a portable rig while camping. Have any of you new owners taken the K3 outside and operated portable on battery power? If so, what were you impressions? Additionally, if I build the 100W model, I can operate at QRP levels on battery with no issues? Thanks! Ken/NO4D -- View this message in context: http://www.nabble.com/K3---Portable-Operation-tp15656862p15656862.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 Portable Operation
Ken, I have not used my K3 portable yet, but I have no doubts that it would work just great. Since the K3 was *not* designed for minimum current draw on receive, if you are contemplating longish operating on battery, I might suggest a K2 would be a better choice. The K2 *was* designed for low receive current draw. A QRP K2 with the internal battery and the KAT2 is very versatile for portable operation. Of course, the K1 and KX1 are also choices for CW only with good performance using even smaller batteries (or longer operating times with a larger external battery). Yes, the K3/100 can be reduced to even QRPp levels. 73, Don W3FPR Ken Kirkley wrote: I am very interested in the K3 for use as a portable rig while camping. Have any of you new owners taken the K3 outside and operated portable on battery power? If so, what were you impressions? Additionally, if I build the 100W model, I can operate at QRP levels on battery with no issues? Thanks! Ken/NO4D ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] OT: How to install LED bulb in Yaesu G-800DXA
There is something else that burns up in those Yaesu analog rotators besides the lamps.If you leave your rotator turned on all the time, you wont get much life out of either the lamps or the servo motors. What I do is leave the rotator turned off unless its actually being used to rotate the ant. Which is easy to do since the on/off switch sits right next to the position buttons. I've never had to service the control box on the two Yaesu rotators in operation here. But if you leave it turned on you certainly will. Someday Yaesu might update their old line of analog rotators to the digital world. Otherwise -- they are excellent rotators and a true value. Frank W7is **Ideas to please picky eaters. Watch video on AOL Living. (http://living.aol.com/video/how-to-please-your-picky-eater/rachel-campos-duffy/ 2050827?NCID=aolcmp0030002598) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] RE: I can't convince myself that it works (was K3 Kit vs Ready Built)
At 11:58:34 EST on Sat 23 Feb 2008 Alan Bloom (N1AL) wrote ... ... bought one of those ESD mats. But I can't convince myself that it works. If I touch my meter probes to the mat I measure infinity ohms, no matter how close together the two probes are. I know the meter works - If I hold one probe tip in each hand the meter measures a few 10's of megohms. -- Al, An ESD mat is designed to very slowly dissipate static charges of up to many thousands of volts, so it has a fairly high surface resistance and is going to present essentially infinity ohms to your meter. That said, if you use probes with several square inches of surface area (such as by placing a couple of cake pans from the XYL's kitchen) on the thing, then you might measure something by placing your probes on the cake pans. Note! Even if a single cake pan is larger than your mat, you can still use two of them by separating them by perhaps an inch and letting both hang off opposite sides of the mat. If you don't measure anything using the cake pan method, there is another science experiment you could do to test your mat, although it requires that you can reliably draw a spark between a finger tip and ground by doing something such as walking across a carpet. If you can, then you could first place your palm on the ESD mat for ten seconds after walking across the carpet and then (with your palm still on the mat) touch ground and see that you don't draw such a spark. BTW, be sure that the mat is grounded. --- - - - --- Keeping your mat clean of any contaminants (mostly oils from your hands, but also solder flux splashes) will ensure that it continues to do its job. Under heavy use, you should clean it at least every other week, or more frequently if you notice that the surface appearance has changed. Only use products specifically designed for this purpose. FYI, a quick Google for esd mat cleaner yielded 196 hits. Then again, if you are only using the mat to build your K3, there's no need to be concerned about cleaning it. 73, Gary KI4GGX P.S. Even though I'm a Software Engineer, I work at an aerospace manufac- turing facility where we are required to attend periodic training on such subjects. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] RE: Your Elecraft K3 slide show (was K3 #464 Delivered, built and on the Air)
At 15:24:05 EST on 23 Sat Feb 2008 Ken Kirkley (NO4D) wrote ... Hey Lee: Is this slide show available on the net for download/view? -- Ken, See http://mailman.qth.net/pipermail/elecraft/2008-February/083322.html in the Reflector archives. 73, Gary KI4GGX ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K2 KPA Low Power on 12 10 Meters
Naked K2 gives me good output on all bands. Problem bands with KPA100 (12 Meters = 13.5 watts and 10 Meters = 10.8 watts). Through the KPA100 into a dummy load gives 100 plus on all bands except; 12 meters = 76 watts and 10 meters 47 watts. This is a new problem and have looked at manual and cannot see a common link? Help would be appreciated before I open up my KPA. Thanks - Larry (G0IKE) K2 #2424 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 Portable Operation
I am very interested in the K3 for use as a portable rig while camping. Have any of you new owners taken the K3 outside and operated portable on battery power? If so, what were you impressions? We had three (3) K3s operating at K7S (Salmoncon 2007), last July. Yes, they were field tester rigs. They worked well for us. We used a large battery and had no trouble keeping them going as long as we liked. I also took mine to a Field Day site last year and let some of the folks operate it for a few hours. Currently, the Ducie Island DXpedition is K3-equipped. This is definitely portable/camping-on-the-beach operation :-) URL:http://ducie2008.dl1mgb.com/pictures/index.php?imgdir=DXpedition%20-%202008%20Feb%2016page=3 and click on the two operating tent pictures. Enjoy! Lyle KK7P ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Test Msg
New Subscriber ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 KPA Low Power on 12 10 Meters
Larry, Since there is a significant difference between the power output on a dummy load and your antenna, look at your antenna system to see what can be done to make the feedline end at the shack look more like a 50 ohm non-reactive impedance. That should make the KPA100 put out as much power as you find into the dummy load. Further, 76 watts on 12 meters and 46 watts on 10 is not the way it should be - the KPA100 should be quite capable of producing 100 watts or more even on 10 meters. Look at the Low Pass Filter carefully for a potential solution. In addition, check the power output from the base K2 without the KPA100 attached. If it is not 10 watts or more, you need to do some work on the base K2 - align the bandpass filter for 10/12m first, then check the low pass filter for 10/12m. Be certain T2 is wound properly (like the diagram in the manual) and T2 is mounted 2 to 3 mm above the RF board. 73, Don W3FPR Larry Dodson wrote: Naked K2 gives me good output on all bands. Problem bands with KPA100 (12 Meters = 13.5 watts and 10 Meters = 10.8 watts). Through the KPA100 into a dummy load gives 100 plus on all bands except; 12 meters = 76 watts and 10 meters 47 watts. This is a new problem and have looked at manual and cannot see a common link? Help would be appreciated before I open up my KPA. Thanks - Larry (G0IKE) K2 #2424 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] RE: ESD Mat
Per a request, here's some additional info on the ESD mat from Radio Shack: They call it an Anti-Static Service Kit. Radio Shack Part# 276-2370 Specs: Vinyl - 26 x 24 inches Ground Cord 10' - Banana type plug or an alligator clip Connector: Banana Jack - built-in 1Meg Ohm resistor Wrist Strap Length: 6' Two Sewn-In Pockets I was actually surprised to see that a small Radio Shack in Fredericksburg, VA had three or four of these in stock. 73, Dave N8AG K3/100 #414 Looking for last minute shopping deals? Find them fast with Yahoo! Search. http://tools.search.yahoo.com/newsearch/category.php?category=shopping ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re:[Elecraft] software to load K3 memories,
Hi Bill, I don't believe that there is. I would hope that the firmware gang (hell Lyle!) might address this in the future. The firmware load utility allows the user to save the K3 configuration so that it may be re-loaded if need be. BUT, there is no way to take the config file from the radio, edit it and then reload it. The Yaesu FT897/857 models allow a user to configure memories, etc. in software and then load the file to the radio. This is a wonderful utility... and saves a lot of time! Loading ALL the memory positions in the K3 (I cannot imagine anyone using every memory slot!!) would take a lot of time... A software utility would make things so much easier. Configurations could be quickly updated... and, in fact, it would be great to build a configuration file for a particular contest, for example, and loaded into the K3 just for that event. 73, Joe - W1AIU ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] OT: Attn CPU gurus - help me
I work for one of the companies in question, so it's hard for me to be completely objective. CPU frequency isn't the only thing because there are multiple internal clocks on the CPUs and one big number isn't going to tell you everything about how fast things are running internally. The Pentium D's with higher clock rates aren't as fast as the Core 2's with lower clock rates in every case I've benchmarked (keep in mind I have only a very minimal set of benchmarks to go on here). You should also look at power consumpution (the fans are going to drive you nuts sometimes). I have noticed that the Core 2 processors are faster but seem to run the fans a lot less than the Pentium Ds. Multi-core processors are going to do well fo you if you need to do multiple processor-intensive things at once. I'm not sure how much processor it requires to do PSK31 while also running all the Vista nonsense in the background; someone else will have to vouch for that. So by now you can probably tell which company I work for. My basic suggestion is to go with a Core 2 system over a Pentium D system because there was a significant architecture change and it helps the computers run cooler and quieter. And that's just me talking, not the company. Oh, and it's usually true nowadays that the computers are fast enough to do whatever you need, unless you're processing video in the background while you're trying to run the rig. On Sat, 23 Feb 2008, Robert Tellefsen wrote: Hi Doug You've got some real legitimate questions that a lot of us non-gurus would like to hear the answers to. If you get a lot of your replies direct, could you summarize them in a post to us masses? Thanks and 73 Bob N6WG - Original Message - From: DOUGLAS ZWIEBEL [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Saturday, February 23, 2008 3:49 AM Subject: [Elecraft] OT: Attn CPU gurus - help me I want to hook my K3's up to the latest skimmer software along with computer control of the rig, etc. and of course via the LP-Pan when it is available (soon). My query is about the computer processor and associated elements. Currently, I am reading that the way to go for skimmer (192kc bandwidth - not that I need that), is to use a machine with a 3G processor. But that seems to only account for one element of the system rating. My current ham radio computer is a fossil on which I run DOS stuff. But my home computer (this one) is a Pentium 4, 3.0 Gig. Sounds right, but.. When I look at the new machines (which seem relatively cheap for what you get), I see: Core 2 Quad Q6600 Core 2 Duo Pentiuim Dual Core Celeron Athlon 64 etc. Then I see speeds for each of the above, NONE of which goes up to 3.0 gig. Just because my current processor has the 3.0 gig label, I am assuming that these newer releases are even faster, despite the lower clock rate. For the app's that I'm looking at, DOES CLOCK RATE RULE or does this other stuff count too? I also see big variables on the L2 Cache: 2MB, 4MB, 8MB - relatively speaking, how important are these compared to the other factors? And then there is the Front Side Bus speed: 800, 1333. Weird that the Core 2 Quad (which sounds like the best to me) has a FSB of 1066 (not the fastest). And finally, there is the clock speed, which for most of the above is 2.2, 2.33, 2.66 gig (again, not reaching 3.0). How do I put all this together? Again, for MY apps, which figure of merit is most important? Or do I just multiply them all together? :-) Reminder: CPU gurus only need respond. I prefer direct replies, but I assume that this topic might be of wide interest to the Elecraft group...YOUR CHOICE if you respond to the list or just to me. THANKS A TON! de Doug KR2Q Expert on DRGs, not CPUs http://en.wikipedia.org/wiki/Diagnosis-related_group this page is rather outdated ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com -- Hisashi T Fujinaka - [EMAIL PROTECTED] BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) + $2.50 = latte ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] ESD Mat - Helpful Hint
I ran into the same problem, then discovered the mat lead reaches to the floor, so I put the strap around my ankle. No more knocking the parts trays across the workspace. I DO have to remember it's attached when I get up :-o Rob KC6ROC K2/100 #5924 --- WA6OCP [EMAIL PROTECTED] wrote: I am sure others may have discovered this, but I will mention it anyway. It takes about one second to find out that a wrist strap, and its lead, are frequently in the way. I solved that problem by sliding the wrist band halfway up my forearm. Unfortunately, it doesn't remond you to take it off when you get up from the table or put it back on when you sit down. ;-) 72, Neal WA6OCP K3/10/305 Dave Agsten wrote: Paul, I picked up an ESD mat at Radio Shack. I was a nice size, had pockets for tools to stay in, the wrist strap on a coiled cable and a 6 foot or so connection to ground either via and alligator clip or banana plug. The biggest problem was remembering to disconnect the wrist strap ( via a banana plug ) when I got up from the table. :-) It was $24.95. The first employee in the store didn't have a clue as to what I was asking for.no surprise there. 73, Dave N8AG k3/100 #414 Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com -- View this message in context: http://www.nabble.com/RE%3A-ESD-Mat-tp15648544p15652833.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com Looking for last minute shopping deals? Find them fast with Yahoo! Search. http://tools.search.yahoo.com/newsearch/category.php?category=shopping ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] VP6DX
Just worked 'em with 5 Watts - 2210 UTC on 18.076. They're 599 in NJ and listening 1 up. Even though I don't have one - tnx Elecraft for those K3's! -- 73 de Larry W2LJ QRP - When you care to send the very least! http://www.w2lj.qrpradio.com http://w2lj.blogspot.com/ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] software to load K3 memories,
I have asked Don of DogPark software to consider adding K3 management to MacMemoriesManager - another good reason to use a Mac :-) On 23/02/2008 22:26, Joe Stofko [EMAIL PROTECTED] sent: Hi Bill, I don't believe that there is. I would hope that the firmware gang (hell Lyle!) might address this in the future. The firmware load utility allows the user to save the K3 configuration so that it may be re-loaded if need be. BUT, there is no way to take the config file from the radio, edit it and then reload it. -- The rung of a ladder was never meant to rest upon, but only to hold a man's foot long enough to enable him to put the other somewhat higher. -Thomas Henry Huxley, biologist and writer (1825-1995) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 Output levels
No at present, it just remembers the last power setting regardless of band 73 de M0XDF / K3 #174 On 23/02/2008 18:22, Harry Price [EMAIL PROTECTED] sent: Hi, I asked this question here before but no one anawered it. Maybe it was considered a dumb question. Can the power output level of the K3/100 be individually programmed for different bands? For example to accomodate a low drive level 6M amplifier. I doubt it but thought I would ask as I cannot find anything in the literature on this. It would be nice so that when you QSY'ed for a 6M band opening you would not over drive your 6M amp in the excitement. -- Never let your sense of morals get in the way of doing what's right. -Isaac Asimov, scientist and writer (1920-1992) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 CT 10.x for DOS
Anyone out there using K1EA's CT 10.x for DOS with the K3? I'd like to know which Kenwood model you selected for communication. (such as 850, 950, 2000, etc). Thanks! de Doug KR2Q ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] OT: Attn CPU gurus - help me
I'd pretty much agree. Keep in mind, though, that a dual-core or quad- core CPU, whether it's Intel or AMD, is not often going to help you with much of the software out there that is not specifically written to take advantage of both cores. That's not to say that I wouldn't buy one--in fact, I'd definitely recommend any dual-core CPU over a Pentium D or single-core AMD if you're trying to buy something that will serve your general needs for the foreseeable future. If you're trying to stay on the cheap side, any of those you mentioned will run PSK31 or the other sound card- based programs for ham communications, dual-core or not. If any thing, I'd try to make sure that the box I buy has a decent name brand sound card in it, like a Sound Blaster Audigy or similar card, especially one that advertises more capability than a basic 16- bit A/D converter, which is what most Windows-type sound cards use. They'll all work fine, but a 20-bit card will give you some edge if you get into SDR (software-defined radio) designs or maybe next year's newest sound-card based ham decoders. As far as front-side bus goes, the higher speeds, of course, will give you better performance. The downside is that you will pay more for the faster memory sticks that are required. Generally, you don't need the fastest front-side bus unless you're using software that really needs it, and it doesn't sound like you are. If I were you, I'd probably opt for a mid-range 2+ GHz Intel Core 2 Duo-based box that advertised its quietness. I hate fan noise in the shack, and the older CPU's often run hotter than some of the newer dual-core stuff, requiring faster, noisier fans. I'm sure that the advice to use a 3 GHz processor was assuming the old single-core technology. Even though a dual-core CPU running at 2 GHz won't run twice as fast as a single-core, you will definitely see a benefit compared to the faster single CPU. Some of the operating system overhead (presumably Windows in your case) can be handled more efficiently by the dual-core structure, giving the appearance of a faster overall CPU experience to whatever program you're running. Generally, I'd stay away from anything called Celeron these days. In earlier times it was Intel's code word for cheapest chip with less capabilities than the others. Even if the clock speed is higher. Bottom line: 2 cores at 2.0 GHz will generally run as fast or faster than a 3.0 GHz Pentium D with less heat. A quad core box is great if you want to drop the money on it, but it won't be twice as fast as a dual-core unless you're running very specific software or an OS that can take advantage of it (like Mac OS X). For front-side bus speed, go with whatever your pocketbook allows. Faster is always better. And I'd generally recommend Intel over AMD, but that's a personal preference only. Hope this helps a bit. 73, Dave K7DAA http://www.k7daa.com On Feb 23, 2008, at 2:30 PM, Hisashi T Fujinaka wrote: I work for one of the companies in question, so it's hard for me to be completely objective. CPU frequency isn't the only thing because there are multiple internal clocks on the CPUs and one big number isn't going to tell you everything about how fast things are running internally. The Pentium D's with higher clock rates aren't as fast as the Core 2's with lower clock rates in every case I've benchmarked (keep in mind I have only a very minimal set of benchmarks to go on here). You should also look at power consumpution (the fans are going to drive you nuts sometimes). I have noticed that the Core 2 processors are faster but seem to run the fans a lot less than the Pentium Ds. Multi-core processors are going to do well fo you if you need to do multiple processor-intensive things at once. I'm not sure how much processor it requires to do PSK31 while also running all the Vista nonsense in the background; someone else will have to vouch for that. So by now you can probably tell which company I work for. My basic suggestion is to go with a Core 2 system over a Pentium D system because there was a significant architecture change and it helps the computers run cooler and quieter. And that's just me talking, not the company. Oh, and it's usually true nowadays that the computers are fast enough to do whatever you need, unless you're processing video in the background while you're trying to run the rig. On Sat, 23 Feb 2008, Robert Tellefsen wrote: Hi Doug You've got some real legitimate questions that a lot of us non-gurus would like to hear the answers to. If you get a lot of your replies direct, could you summarize them in a post to us masses? Thanks and 73 Bob N6WG - Original Message - From: DOUGLAS ZWIEBEL [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Saturday, February 23, 2008 3:49 AM Subject: [Elecraft] OT: Attn CPU gurus - help me I want to hook my K3's up to the latest
Re: [Elecraft] OT: Attn CPU gurus - one more thing
Oops, one more thing I should add. You didn't mention anything about any other parameters, such as disk speeds or types, or the amount of memory you'd buy, so I'll just make a quick comment about them. If you're running Windows, I'd recommend 2 GB of RAM as a minimum. 4 GB isn't considered outrageous if you're going to run Vista. I know that sounds crazy if you haven't run Windows XP or Vista, but believe me, the amount of RAM you have in your system can make a bigger difference than a doubling of clock speed. It's waaay different than the old DOS-based days. Windows Vista starts to get really sluggish on 512 MB or less. XP will run OK-ish on 256 MB or 512 MB, but it also will run faster with more RAM. Disks: These days, with disk capacities having grown by leaps and bounds, you do not save hardly any cash by specifying only an 80 gigabyte disk compared to, say, a 250 GB disk. Some of the bigger disks will also run faster than the smaller disks due to increased caches and internal geometries. Many base-model systems now come standard with a 200 GB or larger disk. 500 GB disks are getting close to the sweet spot price-wise. 1 terabyte drives are very common. One of the new products we just designed at Apple includes a 1 TB drive, just for backups! 73, Dave K7DAA http://www.k7daa.com On Feb 23, 2008, at 4:02 PM, Dave Andrus wrote: I'd pretty much agree. Keep in mind, though, that a dual-core or quad-core CPU, whether it's Intel or AMD, is not often going to help you with much of the software out there that is not specifically written to take advantage of both cores. That's not to say that I wouldn't buy one--in fact, I'd definitely recommend any dual-core CPU over a Pentium D or single-core AMD if you're trying to buy something that will serve your general needs for the foreseeable future. If you're trying to stay on the cheap side, any of those you mentioned will run PSK31 or the other sound card-based programs for ham communications, dual-core or not. If any thing, I'd try to make sure that the box I buy has a decent name brand sound card in it, like a Sound Blaster Audigy or similar card, especially one that advertises more capability than a basic 16-bit A/D converter, which is what most Windows-type sound cards use. They'll all work fine, but a 20-bit card will give you some edge if you get into SDR (software-defined radio) designs or maybe next year's newest sound-card based ham decoders. As far as front-side bus goes, the higher speeds, of course, will give you better performance. The downside is that you will pay more for the faster memory sticks that are required. Generally, you don't need the fastest front-side bus unless you're using software that really needs it, and it doesn't sound like you are. If I were you, I'd probably opt for a mid-range 2+ GHz Intel Core 2 Duo-based box that advertised its quietness. I hate fan noise in the shack, and the older CPU's often run hotter than some of the newer dual-core stuff, requiring faster, noisier fans. I'm sure that the advice to use a 3 GHz processor was assuming the old single-core technology. Even though a dual-core CPU running at 2 GHz won't run twice as fast as a single-core, you will definitely see a benefit compared to the faster single CPU. Some of the operating system overhead (presumably Windows in your case) can be handled more efficiently by the dual-core structure, giving the appearance of a faster overall CPU experience to whatever program you're running. Generally, I'd stay away from anything called Celeron these days. In earlier times it was Intel's code word for cheapest chip with less capabilities than the others. Even if the clock speed is higher. Bottom line: 2 cores at 2.0 GHz will generally run as fast or faster than a 3.0 GHz Pentium D with less heat. A quad core box is great if you want to drop the money on it, but it won't be twice as fast as a dual-core unless you're running very specific software or an OS that can take advantage of it (like Mac OS X). For front-side bus speed, go with whatever your pocketbook allows. Faster is always better. And I'd generally recommend Intel over AMD, but that's a personal preference only. Hope this helps a bit. 73, Dave K7DAA http://www.k7daa.com On Feb 23, 2008, at 2:30 PM, Hisashi T Fujinaka wrote: I work for one of the companies in question, so it's hard for me to be completely objective. CPU frequency isn't the only thing because there are multiple internal clocks on the CPUs and one big number isn't going to tell you everything about how fast things are running internally. The Pentium D's with higher clock rates aren't as fast as the Core 2's with lower clock rates in every case I've benchmarked (keep in mind I have only a very minimal set of benchmarks to go on here). You should also look at power consumpution
Re: [Elecraft] that mojo thing
On Sat, 23 Feb 2008 15:30:14 -0500, you wrote: Chris; An Elecraft to Elecraft contact, would that be double Mojo or Mojo squared? Which gives the formula E = Mc Squared Where E = Elecraft, M = Mojo, c = contacts Randy K8RDD ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com Tom, N5GE - SWOT 3537 - Grid EM12jq They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety. --Benjamin Franklin 1775 Support the entire Constitution, not just the parts you like. http://www.n5ge.com http://www.eQSL.cc/Member.cfm?N5GE ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 Bandwidth Offset with Latest Firmware
Ever since loading the latest firmware this problem has occurred: I am listening to a cw signal with the bandwidth set to maximum (2.8 Khz on the display) I have centered a cw signal in the exact center of the cwt display .. I am exactly on frequency. I have the bandwidth display centered using the shift control. Then I reduce bandwidth slowly and when I get down to about 500 hertz the signal nearly disappears. I can recover it using the shift control (about FC 35 on the display) but as I continue reducing bandwidth more and more shift is needed to hold the signal until at about 200 hertz bandwidth there is no signal left and the shift control is no longer effective. Before the last firmware upgrade I could crank the bandwidth down to 50 hertz while everything remained centered on the display. I have checked and rechecked all filter settings. They are all as I had them set up originally. What has happened? Don K7FJ K3 #195 Filters: 6 KHz , Stock 2.7KHz, 200 Hz ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] OT: Attn CPU gurus - help me
On Sat, 23 Feb 2008 14:30:46 -0800 (PST), you wrote: [snip] You should also look at power consumpution (the fans are going to drive you nuts sometimes). I have noticed that the Core 2 processors are faster but seem to run the fans a lot less than the Pentium Ds. [snip] I can say that you are quite right about the above. I just finished building a rack mount server last week with a Core Duo 2.4G processor with copper pipe cooling running Win 2003 64 bit. It runs cooler than any server I've ever owned and performs very well. The fans are running on slow speed all of the time. It is a domain controller and also supports a SQL Server 2005 Enterprise 64 bit installation. tell you bosses (engineers) good work... Tom, N5GE - SWOT 3537 - Grid EM12jq They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety. --Benjamin Franklin 1775 Support the entire Constitution, not just the parts you like. http://www.n5ge.com http://www.eQSL.cc/Member.cfm?N5GE ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K2 Assembly Problems
Hello, I posted this a few days ago. I will cut and paste here again. I'm in the middle of building a K2, S/N 6412. While doing the Alignment and test Part 1, I had a couple of readings that were not in specs. 1. Page 48, Setting the AGC Threshold, the manuals calls for adjusting R-1 for a reading of 3.80VDC on pin 5 of U2. The highest R1 would adjust to is 3.60VDC. 2. Page 48 Bargraph Current test. The manual calls for a current reading of 0.16 to 0.18. My K2 reads 0.25 amps. That is quite a bit higher than what is called for. I received suggestions to check the voltage on the 8 volt regulator in the control board. It is just as suggested, the voltage is almost 1/2 volt low. Will a 7808 work? Is it the same as a LM2930T-8? They both have the same NTE cross reference and are available locally. I finally got around to reassemble for alignment part II. Some times, when it turns on, nothing happens, no display on the LCD, none of the controls do anything. After I turn it off and on a couple of times, it starts working as it is suppose to. This also happened in the first section for alignment where I had the problems listed above, I thought it was the memory initializing. This is not the case, it is still doing the same thing. Would the low 8 Volts cause the MCU to hang up? Thank you for your help. Best, DW Holtman WB7SSN ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] OT: How to install LED bulb in Yaesu G-800DXA
On Sat, 23 Feb 2008 15:45:58 EST, you wrote: There is something else that burns up in those Yaesu analog rotators besides the lamps.If you leave your rotator turned on all the time, you wont get much life out of either the lamps or the servo motors. What I do is leave the rotator turned off unless its actually being used to rotate the ant. Which is easy to do since the on/off switch sits right next to the position buttons. I've never had to service the control box on the two Yaesu rotators in operation here. But if you leave it turned on you certainly will. Someday Yaesu might update their old line of analog rotators to the digital world. Otherwise -- they are excellent rotators and a true value. Frank W7is [snip] Never had a failure from my G-2800DXA which has been on for ten years. However, it could happen next week ;) Tom, N5GE - SWOT 3537 - Grid EM12jq They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety. --Benjamin Franklin 1775 Support the entire Constitution, not just the parts you like. http://www.n5ge.com http://www.eQSL.cc/Member.cfm?N5GE ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2-Rework Elimination?
Curt... I put a full complement of re-work eliminators in my K2, even though I had bought all the options - and installed them. I thought it very helpful to just work along and not have to worry about desoldering, cutting, pulling, etc as each option was ready. I have at one time or another pulled out an option to do something else with the stock K2, and in such cases having the re-work eliminators in place made it much easier that would otherwise be the case. The cost is minimal, and the actual workup and installation very easy. I recommend them. ...robert At 02/23/2008 07:05, Curt wrote: I've ordered a K-2 and contemplate adding the KSB2 and the KAT2 someday. Most likely will not implement any other options, mostly operate QRP CW. I'd appreciate comments about whether the re-work eliminator kits would be appropriate, or just an unnecessary expense. 72, Curt KB5JO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com Robert G. Strickland PhD ABPH - KE2WY [EMAIL PROTECTED] Syracuse, New York USA ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 Assembly Problems
DW, First, the 7808 will work, but the stock regulator is a low dropout type, so if you replace it with a 7808, the power supply voltage that will create proper operation will have to be a bit higher. That may make no difference if you are operating from a home station power supply, but if you are operating from a battery, the battery low voltage that will cause improper operation will be higher than with the low dropout regulator. I suggest requesting a replacement regulator from Elecraft - [EMAIL PROTECTED] The low 8 volt supply voltage will not cause an MCU failure - you have a different problem there. Check the component values and check the soldering. When you are finished, check the soldering. 73, Don W3FPR DW Holtman wrote: Hello, I posted this a few days ago. I will cut and paste here again. I'm in the middle of building a K2, S/N 6412. While doing the Alignment and test Part 1, I had a couple of readings that were not in specs. 1. Page 48, Setting the AGC Threshold, the manuals calls for adjusting R-1 for a reading of 3.80VDC on pin 5 of U2. The highest R1 would adjust to is 3.60VDC. 2. Page 48 Bargraph Current test. The manual calls for a current reading of 0.16 to 0.18. My K2 reads 0.25 amps. That is quite a bit higher than what is called for. I received suggestions to check the voltage on the 8 volt regulator in the control board. It is just as suggested, the voltage is almost 1/2 volt low. Will a 7808 work? Is it the same as a LM2930T-8? They both have the same NTE cross reference and are available locally. I finally got around to reassemble for alignment part II. Some times, when it turns on, nothing happens, no display on the LCD, none of the controls do anything. After I turn it off and on a couple of times, it starts working as it is suppose to. This also happened in the first section for alignment where I had the problems listed above, I thought it was the memory initializing. This is not the case, it is still doing the same thing. Would the low 8 Volts cause the MCU to hang up? Thank you for your help. Best, DW Holtman WB7SSN ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] OT: Attn CPU gurus - one more thing
On Sat, 23 Feb. 2008 16:20:10 -0800, K7DAA wrote: [snip] 1 terabyte drives are very common. One of the new products we just designed at Apple includes a 1 TB drive, just for backups! Yep I just built a new server and added a 1T external drive for backups. [snip] Tom, N5GE - SWOT 3537 - Grid EM12jq They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety. --Benjamin Franklin 1775 Support the entire Constitution, not just the parts you like. http://www.n5ge.com http://www.eQSL.cc/Member.cfm?N5GE ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] OT: Attn CPU gurus - one more thing
In a message dated 2/23/08 8:54:42 PM Eastern Standard Time, [EMAIL PROTECTED] writes: 1T external drive for backups. Western Digital makes a series of external drives that look like a book. The case ventilation holes in the top spell out various words in Morse Code. I am not making this up. 73 de Jim, N2EY ** Ideas to please picky eaters. Watch video on AOL Living. (http://living.aol.com/video/how-to-please-your-picky-eater/rachel-campos-duffy/2050827?NCID=aolcmp0030002598) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] OT: How to install LED bulb in Yaesu G-800DXA
same here. Keep the rotator box on all day long and no problems after using at least 6 years now. Other than the lamps in the display of course. Jim K4JAF - Original Message - From: Tom Childers, N5GE [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Saturday, February 23, 2008 7:08 PM Subject: Re: [Elecraft] OT: How to install LED bulb in Yaesu G-800DXA On Sat, 23 Feb 2008 15:45:58 EST, you wrote: There is something else that burns up in those Yaesu analog rotators besides the lamps.If you leave your rotator turned on all the time, you wont get much life out of either the lamps or the servo motors. What I do is leave the rotator turned off unless its actually being used to rotate the ant. Which is easy to do since the on/off switch sits right next to the position buttons. I've never had to service the control box on the two Yaesu rotators in operation here. But if you leave it turned on you certainly will. Someday Yaesu might update their old line of analog rotators to the digital world. Otherwise -- they are excellent rotators and a true value. Frank W7is [snip] Never had a failure from my G-2800DXA which has been on for ten years. However, it could happen next week ;) Tom, N5GE - SWOT 3537 - Grid EM12jq They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety. --Benjamin Franklin 1775 Support the entire Constitution, not just the parts you like. http://www.n5ge.com http://www.eQSL.cc/Member.cfm?N5GE ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2-Rework Elimination?
Curt, If you only want to add the KSB2 and the KAT2, then just order the Rework eliminator parts for the KSB2 (the KAT2 does not need any). There is no need to install all the Rework Eliminator headers and components - install only what you will use later. Actually, the hardest part of the KSB2 installation is adding the components on the front panel board. If you add those at the time you construct the front panel board, it will save you work later. The parts are included with the KSB2 option, so you have a choice of buying the KSB2 option with your initial K2 or ordering the Rework Eliminator parts for the KSB2 - your choice. If you decide to order the KSB2 later, disassembling the Front Panel board from the actual front panel is not difficult - just remove the knobs and remove the encoder nut and remove one screw. It is more of an emotional 'thing' than a real problem. 73, Don W3FPR Curt wrote: I've ordered a K-2 and contemplate adding the KSB2 and the KAT2 someday. Most likely will not implement any other options, mostly operate QRP CW. I'd appreciate comments about whether the re-work eliminator kits would be appropriate, or just an unnecessary expense. 72, Curt KB5JO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 S9 calibration?
Phil, There is no right or wrong way to do it - S-meter readings are arbitrary given the S-meter response set into a variety of 'competitors' transceivers . Take your pick and realize the consequences of your actions. If you calibrate it with the preamp off ( which is what I would suggest on 40 meters), then the S-meter will be a bit more 'lively' with the preamp on. This choice is merely a matter of reference. Bob Sherwood chose to set it with the preamp off, but you may like it better with the preamp on - the choice is yours - just remember which way you did it so you can interpret your S-meter readings appropriately. 73, Don W3FPR Phil Debbie Salas wrote: I see in the Yahoo K3 User's Group that Bob Sherwood just discussed filter performance with the K3 he has been testing. He commented that S9 at 50uV is with the preamp off. According to my manual, you should cal S9 at 50uV with the preamp on. I cal'd as stated in the manual, but I wonder if this is really the right way to do this. Comments? Phil - AD5X ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 CT 10.x for DOS
DOUGLAS ZWIEBEL wrote: Anyone out there using K1EA's CT 10.x for DOS with the K3? I'd like to know which Kenwood model you selected for communication. (such as 850, 950, 2000, etc). Mine worked fine in ARRL DX CW setting Kenwood 50 and 38400. Something happened during the latter part of the contest that caused CT to record 1836 as my frequency for all contacts after that point. Not sure what caused that but the K3 was controllable the entire time. 73, Bill W4ZV -- View this message in context: http://www.nabble.com/K3---CT-10.x-for-DOS-tp15658963p15660100.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 S9 calibration?
Phil amp; Debbie Salas wrote: I see in the Yahoo K3 User's Group that Bob Sherwood just discussed filter performance with the K3 he has been testing. He commented that S9 at 50uV is with the preamp off. According to my manual, you should cal S9 at 50uV with the preamp on. I cal'd as stated in the manual, but I wonder if this is really the right way to do this. Comments? You can calibrate it either way. If you normally operate with preamp off as Rob does then calibrating it with premap off makes sense. If you normally operate with preamp on then follow the manual. 73, Bill W4ZV -- View this message in context: http://www.nabble.com/K3-S9-calibration--tp15660022p15660103.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 Ordered
Ok...ok...do you remember the time you said no that you would not do something and then you eat your words and do so? Well, when the first words about the K3 hit the list and I was the price I said nope, not me...to much money. Well...the order has been placed for the QRP K3 and ATU! I KNEW that I should not start reading all of the reviews about the K3! I KNEW better than to read the happy reports of those who had just completed the building process! Oh well, while I wait for the shipment in early summer, I have to sell some equipment. Looks like I will have an Icom 746, a KX1, and probably my K2 up for sell. Then again, I may keep the K2 and sell the TenTec Jupiter...hmmm what to do? Now the waiting begins! 73 God Bless! Ken/NO4D -- View this message in context: http://www.nabble.com/K3-Ordered-tp15660134p15660134.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 S9 calibration?
I see in the Yahoo K3 User's Group that Bob Sherwood just discussed filter performance with the K3 he has been testing. He commented that S9 at 50uV is with the preamp off. According to my manual, you should cal S9 at 50uV with the preamp on. I cal'd as stated in the manual, but I wonder if this is really the right way to do this. Comments? Phil - AD5X ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] OT: How to install LED bulb in Yaesu G-800DXA
On Sat, 23 Feb 2008 20:15:49 -0600, K4JAF wrote: same here. Keep the rotator box on all day long and no problems after using at least 6 years now. Other than the lamps in the display of course. Jim K4JAF [snip] Interesting about the lamps. I installed an Idiom Press rotator control in my G-2800DXA yesterday and now the compass lighting is not working :( Anyone else had that problem? Tom, N5GE - SWOT 3537 - Grid EM12jq They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety. --Benjamin Franklin 1775 Support the entire Constitution, not just the parts you like. http://www.n5ge.com http://www.eQSL.cc/Member.cfm?N5GE ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3
I tried out my K3 (194) during our National Field Day this weekend. The location was very noisy on 80M, a constant S7/9 power line type noise. The Noise Blanker had some effect but not much. The Noise Reduction system worked extremely well but was really unusable because on the aggressive settings, although it completely removed the noise, the audio output level was drastically reduced. Am I missing something? Still learning to get the best out of the K3. 73 Max ZL4VV ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] K2-Rework Elimination?
At 21:25:23 EST on Sat 23 Feb 2008 Don Wilhelm (W3FPR) wrote ... ... If you only want to add the KSB2 and the KAT2, then just order the Rework eliminator parts for the KSB2 (the KAT2 does not need any). ... -- Although there are isn't a KAT2 un-module, you will have to remove the lower rear panel / heatsink to install P6 (the Aux RF plug) on the RF board prior to installing the KAT2 option. For an additional 90 cents you can obtain this plug from us and install it during the initial build to avoid this disassembly. Otherwise, there's a chance that the PA thermal pads will be damaged and need to be replaced. 73, Gary KI4GGX ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] CPU Speed
From Dave KD1NA The speed of a computer is dependent on many things, memory size and speed, hard drive capacity and data transfer speed, and finally the power of the CPU. Now days CPU speed is less important then number of operations per clock pulse. You will find 3 gig clock speed CPU's but the important thing is how many operations a CPU performs during a given period or time. AMD Athalon and 64 bit processors out performed many Pentium 3 and 4 processors of higher clock speed because they performed more steps per clock pulse. Intel's answer was the multi core CPUs. The bottom line is the newer (and lower clock speed) CPUs will beat the hell out of the older higher clock speed units. 73 Dave KD1na From Doug KR2Q I want to hook my K3's up to the latest skimmer software along with computer control of the rig, etc. and of course via the LP-Pan when it is available (soon). My query is about the computer processor and associated elements. Currently, I am reading that the way to go for skimmer (192kc bandwidth - not that I need that), is to use a machine with a 3G processor. But that seems to only account for one element of the system rating. My current ham radio computer is a fossil on which I run DOS stuff. But my home computer (this one) is a Pentium 4, 3.0 Gig. Sounds right, but.. When I look at the new machines (which seem relatively cheap for what you get), I see: Core 2 Quad Q6600 Core 2 Duo Pentiuim Dual Core Celeron Athlon 64 etc. Then I see speeds for each of the above, NONE of which goes up to 3.0 gig. Just because my current processor has the 3.0 gig label, I am assuming that these newer releases are even faster, despite the lower clock rate. For the app's that I'm looking at, DOES CLOCK RATE RULE or does this other stuff count too? I also see big variables on the L2 Cache: 2MB, 4MB, 8MB - relatively speaking, how important are these compared to the other factors? And then there is the Front Side Bus speed: 800, 1333. Weird that the Core 2 Quad (which sounds like the best to me) has a FSB of 1066 (not the fastest). And finally, there is the clock speed, which for most of the above is 2.2, 2.33, 2.66 gig (again, not reaching 3.0). How do I put all this together? Again, for MY apps, which figure of merit is most important? Or do I just multiply them all together? :-) Reminder: CPU gurus only need respond. I prefer direct replies, but I assume that this topic might be of wide interest to the Elecraft group...YOUR CHOICE if you respond to the list or just to me. THANKS A TON! de Doug KR2Q Expert on DRGs, not CPUs ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] K3 S9 calibration?
To ask the obvious question ... since the S-meter is derived from the DSP and the DSP/controller should know if the preamp is on or off, why are there not two sets of calibrations so 50 uV at the antenna input is S9 whether the preamp is on or off? 73, ... Joe, W4TV -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bill W4ZV Sent: Saturday, February 23, 2008 9:40 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 S9 calibration? Phil amp; Debbie Salas wrote: I see in the Yahoo K3 User's Group that Bob Sherwood just discussed filter performance with the K3 he has been testing. He commented that S9 at 50uV is with the preamp off. According to my manual, you should cal S9 at 50uV with the preamp on. I cal'd as stated in the manual, but I wonder if this is really the right way to do this. Comments? You can calibrate it either way. If you normally operate with preamp off as Rob does then calibrating it with premap off makes sense. If you normally operate with preamp on then follow the manual. 73, Bill W4ZV -- View this message in context: http://www.nabble.com/K3-S9-calibration--tp15660022p15660103.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 S meter
Didn't read somewhere at some time that the K3 would also display the received signal in dbm? That would solve a lot. de Doug KR2Q ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 S9 calibration?
Joe Subich, W4TV wrote: To ask the obvious question ... since the S-meter is derived from the DSP and the DSP/controller should know if the preamp is on or off, why are there not two sets of calibrations so 50 uV at the antenna input is S9 whether the preamp is on or off? This was discussed among field testers. Some of them (me included) wanted the s-meter setting to be independent of preamp setting, but apparently the arguments that people will think the preamp doesn't work and other radios don't do this were more persuasive. I suspect (but don't know for sure) that it would be possible to change this in firmware and maybe someday there will be an option to allow it to work this way. -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 Bandwidth Offset with Latest Firmware - resolved
Well, I had not checked all of the filter settings after all. Two of my filters were set to OFF. Doh !! Sorry for the bandwidth. Don K7FJ Ever since loading the latest firmware this problem has occurred: I am listening to a cw signal with the bandwidth set to maximum (2.8 Khz on the display) I have centered a cw signal in the exact center of the cwt display .. I am exactly on frequency. I have the bandwidth display centered using the shift control. Then I reduce bandwidth slowly and when I get down to about 500 hertz the signal nearly disappears. I can recover it using the shift control (about FC 35 on the display) but as I continue reducing bandwidth more and more shift is needed to hold the signal until at about 200 hertz bandwidth there is no signal left and the shift control is no longer effective. Before the last firmware upgrade I could crank the bandwidth down to 50 hertz while everything remained centered on the display. I have checked and rechecked all filter settings. They are all as I had them set up originally. What has happened? Don K7FJ K3 #195 Filters: 6 KHz , Stock 2.7KHz, 200 Hz ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] RE: I can't convince myself that it works (was K3 Kit vs Ready Built)
Hi Gary, Yes, I know an anti-static mat is supposed to have high resistance, but I'm surprised the Radio Shack model measures infinity ohms with my DVM. The meter is capable of reading resistance over 30 megohms (confirmed by measuring my skin resistance). I just tried your cake pan method and still get no reading. If you assume 100 pF body capacitance for the human body model, 30 megohms gives a 3 millisecond time constant. A 1000V static zap would discharge to 6.7V in 5 time constants = 15 ms. So I guess maybe it's OK, but it still makes me nervous that I can't confirm that the mat is actually doing anything. Al N1AL On Sat, 2008-02-23 at 12:56, Gary Hvizdak wrote: At 11:58:34 EST on Sat 23 Feb 2008 Alan Bloom (N1AL) wrote ... ... bought one of those ESD mats. But I can't convince myself that it works. If I touch my meter probes to the mat I measure infinity ohms, no matter how close together the two probes are. I know the meter works - If I hold one probe tip in each hand the meter measures a few 10's of megohms. -- Al, An ESD mat is designed to very slowly dissipate static charges of up to many thousands of volts, so it has a fairly high surface resistance and is going to present essentially infinity ohms to your meter. That said, if you use probes with several square inches of surface area (such as by placing a couple of cake pans from the XYL's kitchen) on the thing, then you might measure something by placing your probes on the cake pans. Note! Even if a single cake pan is larger than your mat, you can still use two of them by separating them by perhaps an inch and letting both hang off opposite sides of the mat. If you don't measure anything using the cake pan method, there is another science experiment you could do to test your mat, although it requires that you can reliably draw a spark between a finger tip and ground by doing something such as walking across a carpet. If you can, then you could first place your palm on the ESD mat for ten seconds after walking across the carpet and then (with your palm still on the mat) touch ground and see that you don't draw such a spark. BTW, be sure that the mat is grounded. --- - - - --- Keeping your mat clean of any contaminants (mostly oils from your hands, but also solder flux splashes) will ensure that it continues to do its job. Under heavy use, you should clean it at least every other week, or more frequently if you notice that the surface appearance has changed. Only use products specifically designed for this purpose. FYI, a quick Google for esd mat cleaner yielded 196 hits. Then again, if you are only using the mat to build your K3, there's no need to be concerned about cleaning it. 73, Gary KI4GGX P.S. Even though I'm a Software Engineer, I work at an aerospace manufac- turing facility where we are required to attend periodic training on such subjects. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Elecraft CW Net Announcement
Good Evening, Today was a very nice day to work outside and clean inside. Bright, sunny, and fairly warm. Most of the snow is gone so you could go outside with only a light jacket. As I was cleaning I found some old tapes. I just listened to Beethoven's Appassionata Sonata, Bruce Springsteen's Born to Run, and currently a tape I made of the creek near my house in Wisconsin. It is the middle of summer and you can hear the many planes flying overhead during the EAA fly-in. I went to my first fly-in when they were still in Rockford but they moved twice to get to their present location near Oshkosh. Next I think I will listen to my Plasmatics tape for a little change of pace :) I did many amateur related activities this week but none of them were on the air. I went to the ARES meeting on Tuesday, taught an ECOM class on Wednesday, while earlier in the week I had developed an ECOM training exercise for our county. Other than that I just worked, went to school, and went to a lot of meetings. That is why I needed to clean today. I had no time to do much other than feed Sam and the fireplace throughout the week. I am hearing all the birds singing as they wait their turn to bath in the pools next to the creek. I can feel the summer air and smell the creek simply from the tape I made in the early '90s! I made another the next night but it was dominated by a few very, very loud crickets. Hopefully the bands will be good for us tomorrow. Who can tell? Soon I will move the second net back to 0200z because the sun is coming back north at a very nice pace. That way I can make dinner between the nets like I used to. Well, I used to eat whatever Pat prepared and tell her about folks on the twenty meter net but I can no longer do that; I have to put up with whatever I cook :) However, that is improving as the years go by. I just heard a cicada; I have not heard one of those in many years. Please join us tomorrow evening. 1) Hail signs (first letter or two of the suffix of your call) 2) NCS help (as well as QSP/QNP relay help) Sunday 2300z (Sunday 3 PM PST) 14050 kHz Monday 0100z (Sunday 5 PM PST) 7045 kHz Stay warm, Kevin. KD5ONS ecn.visionseer.com for net details ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
