[Elecraft] K2 operation with internal battery
Jerry I've had the K2 and KBT2 since 2001, it works just fine on the shack bench with a power supply set to 14.2V (as per the KBT2 manual). I keep the rear panel battery switch turned on, which means the battery is always charged and ready for use. I haven't run the battery completely down and have only needed to replaced the battery once. Note gel cells have a short life expectancy if over discharged. Since adding the KDSP2, KIO2 and the KSB2, the current consumption isn't as low as it used to be... I also have a K1 for lower consumption while away from home, so I haven't used the K2 solely on the internal battery much recently. 73 Dave, G4AON K2 #1892 -- Hey gang: Just a quick question. I've been reading the K2 manuals and have some minor confusion about the operation of the K2 using a power supply. Can I operate the rig via a power supply with the internal battery switch turned on??? Just want to be sure I'm not going to hurt something. :-) Manuals say I can charge the internal battery from a power supply with the battery switch in either position. Just curious if I need to use caution while operating. Thanks and 72: Jerry N0JRN ___ 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 operation with internal battery
n0jrn wrote: Hey gang: Just a quick question. I've been reading the K2 manuals and have some minor confusion about the operation of the K2 using a power supply. Can I operate the rig via a power supply with the internal battery switch turned on??? Just want to be sure I'm not going to hurt something. :-) Manuals say I can charge the internal battery from a power supply with the battery switch in either position. Just curious if I need to use caution while operating. Thanks and 72: Jerry N0JRN This is stated in the KBT2 manual: CAUTION: If you connect an external battery or a power supply of other than 14.0 V to the K2, you must disable the internal battery using the battery on/off switch. Otherwise, the external battery or low-voltage supply will charge the internal battery to an inadequate voltage, greatly reducing the internal battery’s life. Not sure whether the reason given is entirely correct, but in essence if your external supply is 14V or so you can use the K2 with the rear switch in the ON position, which is the normal charging condition. If you have a lower voltage supply you cannot - I suspect what happens there is that the internal battery tries to discharge through your external supply. You need the rear battery switch in the ON position to charge the battery, it is in series with it. The manual is referring to the front power switch - have it on if you are using the K2, off if you are just charging. Came across this last night. I am checking out a second hand K2 for a friend. The K2/100 lid was fitted, the QRP lid with the battery had been sitting idle for a while and its battery was down to 11V. Something for those of you with both lids to keep an eye on! 73 Dave G3YMC -- View this message in context: http://www.nabble.com/K2--operation-with-internal-battery-tp16375877p16379390.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] Spectrum Analyzer and Panoramic Adapter SDR-IQ
Yes - and Yes. It works very well. Mike W7is wrote: Anyone had any experience with the below and whether it would interface with the K3? SDR-IQ™ Software Defined Radio, Spectrum Analyzer and Panoramic Adapter _http://www.rfspace.com/SDR-IQ.html_ (http://www.rfspace.com/SDR-IQ.html) **Create a Home Theater Like the Pros. Watch the video on AOL Home. (http://home.aol.com/diy/home-improvement-eric-stromer?video=15ncid=aolhom000301) ___ 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/Spectrum-Analyzer-and-Panoramic-Adapter-SDR-IQ-tp16378552p16379416.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 1.78 Firmware Power Output
On 080330 1:09 , K9ZTV [EMAIL PROTECTED] wrote: Anyone with a new K3 would be well advised to be monitoring the reflector every day ... things are happening that quickly. Plus, I know about the RX input mod... What are the other two mods?? It is pretty hard to keep up with this reflector because of the heavy traffic. As many of the postings don't add any relevance to my K3 ownership, I find myself reading less than 5% of the output. Unfortunately this means missing relevant information like this resulting in me working the WPX SSB contest this weekend using a not optimal firmware version. I would prefer a separate list strictly devoted to discussions of the K3. I know this has been discussed before with negative outcome, but to me it seems like the logic solution. 73 de Björn, SM0MDG/7S0X ___ 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 TX IMD - current status?
After reading the ARRL review, I was wondering whether the tx IMD is an issue? Is it yet to be resolved? If it is an issue will be fixed through either hardware or firmware adjustments - or both? Is it okay to run an amp with it? Cheers, Dave VK2NA ___ 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] Spectrum Analyzer and Panoramic Adapter SDR-IQ
Could you describe the setup and, more importantly, the mode(s) of operation that seem most useful with two devices? There are many software options on the IQ side ... Am a bit unsure about best way to use with K3. Thanks. - Original Message - From: [EMAIL PROTECTED] [EMAIL PROTECTED] To: elecraft@mailman.qth.net elecraft@mailman.qth.net Sent: Sun Mar 30 04:09:55 2008 Subject: Re: [Elecraft] Spectrum Analyzer and Panoramic Adapter SDR-IQ Yes - and Yes. It works very well. Mike W7is wrote: Anyone had any experience with the below and whether it would interface with the K3? SDR-IQ™ Software Defined Radio, Spectrum Analyzer and Panoramic Adapter _http://www.rfspace.com/SDR-IQ.html_ (http://www.rfspace.com/SDR-IQ.html) **Create a Home Theater Like the Pros. Watch the video on AOL Home. (http://home.aol.com/diy/home-improvement-eric-stromer?video=15ncid=aolhom000301) ___ 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/Spectrum-Analyzer-and-Panoramic-Adapter-SDR-IQ-tp16378552p16379416.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 This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain information that is proprietary, confidential, and exempt from disclosure under applicable law. Any unauthorized review, use, disclosure, or distribution is prohibited. If you have received this email in error please notify the sender by return email and delete the original message. Please note, the recipient should check this email and any attachments for the presence of viruses. The organization accepts no liability for any damage caused by any virus transmitted by this email. = ___ 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 60m ERR TXG
Dave G4AON wrote: On another 5 MHz issue, the spurious levels are poor and below specification on frequencies below the point where a relay clicks (5.250 If the relay has clicked, you are no longer on the 60m band. If you have the broadcast filters, you may well be in general coverage mode. Unless you have the rig configured to disable out of band operation (I think that is the factory default), there seems to be no problem. MHz), above that point they are OK. There are spurious signals approx 1 MHz either side of the main signal that are -46 dBc when the output is 95 Watts on 5.150 MHz. The lowest UK authorised channel centre is 5260kHz , making the lowest channel edge 5258.5kHz Incidentally, looking at the RSGB 5MHz FAQ http://www.rsgb-spectrumforum.org.uk/5mhz%20faqs.htm, it would seem that amateur equipment capable of 5MHz operation without modification can't be CE approved. -- David Woolley The Elecraft list is a forum for the discussion of topics related to Elecraft products and more general topics related ham radio List Guidelines http://www.elecraft.com/elecraft_list_guidelines.htm ___ 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 60m ERR TXG
At a carrier frequency of 5.260 MHz my K3 is giving spurious signals approx +/- 660 KHz from the carrier at -54 dBc, output level 100W derived from the TUNE button operation. The spurious levels increase as the K3 is set to lower frequencies and is quite clean at the top of the 60m band. I think you will find the approval is invalidated if the importer/dealer modifies previously approved equipment, unless the certification is re-applied for. Including, or not including, 5 MHz is irrelevant if the equipment is approved with that band in the first place. The relay click is related to the KBPF3, if the KBPF3 is turned off in the menu there is no click. 73 Dave, G4AON -- Dave G4AON wrote: / // On another 5 MHz issue, the spurious levels are poor and below // specification on frequencies below the point where a relay clicks (5.250 / If the relay has clicked, you are no longer on the 60m band. If you have the broadcast filters, you may well be in general coverage mode. Unless you have the rig configured to disable out of band operation (I think that is the factory default), there seems to be no problem. / MHz), above that point they are OK. There are spurious signals approx 1 // MHz either side of the main signal that are -46 dBc when the output is // 95 Watts on 5.150 MHz. / The lowest UK authorised channel centre is 5260kHz , making the lowest channel edge 5258.5kHz Incidentally, looking at the RSGB 5MHz FAQ http://www.rsgb-spectrumforum.org.uk/5mhz%20faqs.htm, it would seem that amateur equipment capable of 5MHz operation without modification can't be CE approved. ___ 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 CW rise time mod - Definition
I would like to see someone please take this discussion one step further and define the terms hard keying and soft keying, and describe how either an operator or someone listening would be able to discriminate between the two. My rig is #095 and I frequently contest in the 30-34 WPM range. How would I know if I'm guilty, if guilty is the right word, of soft keying?! Is this an issue only for those who are keying external amplifiers? 73, Gary, VE1RGB ___ 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: AGC mod
Hello I am one of happy K3 users. S/N 00060 I found annoying AGC action when operating CW with 2.8KHz filter even if I configure AGC THR in config menu to highest value. Can we expect more improvement with AGC mod ? I have already ordered CW rise time mod kit and AGC mod kit though. -- 73 de aki, ja1nlx http://www.asahi-net.or.jp/~yy7a-ysd/ http://ja1nlx.blog109.fc2.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] PSK31/Digital interface for within the K2
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Not that I know of. A full blown K2/100 leaves very little space for anything. With the QRP K2 you do have some room but I haven't heard of anybody building an internal digi-mode interface for the K2, ala the K3. I'd suggest a USB to serial adapter if you want to do rig control as well as digi-modes, or a Tigertronics Signalink-1 USB. If your computer is a laptop I'd really suggest the Signalink, as the sound chip it has is head and shoulders better than those internal to most laptops. Paul W. Van Dyke wrote: | Is there anyone that is MAKING a interface that goes INTO the K2 for | PSK/Digital modes?? Not a box outside. As I only have USB, I am looking at | that. | | Thank You | [EMAIL PROTECTED] | | Paul KB9AVO #6363 - -- R. Kevin Stover, ACØH -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.7 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFH75LY11jxjloa2wsRAhzPAKDIUtFaRAK2e2MKJqMTd4mPTOEfzgCgzItg xdHKHPWtzJLxYRq3OqmDYIg= =cQ2f -END PGP SIGNATURE- ___ 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 rx v.poor fixed
hi all im happy to report k2 is now reciveing like it should the fix i found voltages low on u12 on cecking r112 i found i had put 5.6k should have been 22ohm and r111 i had put 22 ohm i have now fitted the correct resistors and wow happy dance all is fine so now i can carry on building my k2 chris g0wfh ___ 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 CW rise time mod - Definition
I would like to see someone please take this discussion one step further and define the terms hard keying and soft keying, and describe how either an operator or someone listening would be able to discriminate between the two. Gary, this topic has been covered in great detail in nearly every ARRL Handbook for at least the last fifty years -- as well as other publications. Some of the most relevant material is covered in articles during the '40s and '50s by By Goodman and George Garmmer. Not all of the material pertaining to optimum key-shaping is accurate, but otherwise, the content is still accurate. Many of us do not like to be held hostage to one rise/fall setting as a one size fits all answer to our operating practices. With DSP-generated raised-cosine key shaping, it's now possible to tighten up key shaping at high CW speeds without appreciably consuming additional bandwidth. 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] K3: User responsibility
K3'ers: When you purchased the K3, you bought into the SDR concept. For me, this meant a self-acknowledgment that I would, of necessity, become an addict of sortswatching the Elecraft Reflector (including reading all of the posts), as well as attempting to stay upright while riding the wave of new releases and other finds. IMO, there is some degree of owner responsibility if you want to keep your radio up to date. Elecraft does provide some hints. You can always just randomly stop by the UPDATE page and check. http://www.elecraft.com/K3/k3_software.htm You can set up your K3 Utility to check automatically (every six hours!) You can visit the Application Notes page: http://www.elecraft.com/K3/k3_app_notes.htm You can visit the Operating Tips page: http://www.elecraft.com/K3/k3_operating_tips.htm Beyond what is provided by Elecraft, you can filter the reflector for only memos from Eric, Wayne, Lyle, etc. Or...you can simply be happy with your version and never check again (as is the case with nearly all non-USA radios out there). For me, buying into the K3 also implied a personal commitment to staying connected. 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
[Elecraft] K2: HI CUR warning
Hi, I worked a little bit of the SSB contest this weekend. I noticed last night I received the HI CUR warning a couple of times. The antenna is a 40m delta loop. I have checked the SWR and it never gets above 2:1 on the entire band. I also use the internal ATU to get it down to 1:1 when I'm transmitting. I am using a heil goldline with a HC5 cartridge for the mic and the mic gain was set to 3. I have never had the HI CUR warning occur while operating CW only in SSB. I looked up HI CUR in the manual and it says that it's usually to do with the radio trying to drive the finals at a higher output than what they are rated. I can connect a dummy load and set the radio to 10 watts then hold down the TUNE + DISPLAY buttons to put the radio in tune mode bypassing the ATU and the radio is putting out the correct amount of power which leads me to believe that the issue has something to do with the mic. Do you think I have the mic gain set too high? I have since backed it down to 1 and it hasn't done it since but it wasn't doing it everytime when it was set to 3 so I really don't know if that fixed it or not. Is there anyone else who uses a Heil Goldline with their K2? Am I even going down the right path troubleshooting wise? Or should I be looking at something else? 73 Matt W5LL ___ 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 CW rise time mod - Definition
For what it is worth, I've just completed a Fourier analysis of the original K3 and revised K3 waveforms presented by G4AON on his website. I was a bit concerned that the sharpening of the leading edge would adversely affect bandwidth and possibly generate clicks. Bottom line for the region of the spectrum between 0 and +/- 200 Hz there is a slight increase in average power (maybe 3 db) for the new sharper waveform. In the range of 200 to 300 Hz the average power increases maybe 10 db. However at this point the spectral energy is down 50 db anyhow. Beyond this 350 Hz, the spectrum energy of the sharper waveform actually falls off relative to the 8ms case. These conclusions are eyeball averages of the sawtooth looking output produced. The teeth go above and below the zero db level. I was pleasantly surprised. Apparently it isn't all in rise time it is also how that waveform is shaped. Here are the assumptions/limitations of the analysis. 1) Code used Fast Fourier Transform by M.F. Hajen 2) A single dit was modeled. 3) Both dits had the same length in the model (about 70ms representing about 20 wpm). 4) Waveforms were digitized in 1 ms steps. 5) The assumption that the waveforms given represented voltage and hence db was calculated by 20 log (amplitude/amplitude at 0 Hz) This doesn't reflect repeating dits or CW made up of dots and dashes. However, it is probably a worse case analysis or close to it. I don't have a web site to post on. There is a .jpg file available of results. Disclaimer I'm not an expert on this or on using the calculational tools. The output does at least agree with the position of the first zero point predicted by a sinx/x formula for a single pulse of near infinite rise time and same width. Clearly it doesn't represent other effects in the rig which affect spectrum. Like a lawyer once said: I'm giving you some free advice, it is worth every penny paid for it 73 de Brian/K3KO . Paul Christensen wrote: I would like to see someone please take this discussion one step further and define the terms hard keying and soft keying, and describe how either an operator or someone listening would be able to discriminate between the two. Gary, this topic has been covered in great detail in nearly every ARRL Handbook for at least the last fifty years -- as well as other publications. Some of the most relevant material is covered in articles during the '40s and '50s by By Goodman and George Garmmer. Not all of the material pertaining to optimum key-shaping is accurate, but otherwise, the content is still accurate. Many of us do not like to be held hostage to one rise/fall setting as a one size fits all answer to our operating practices. With DSP-generated raised-cosine key shaping, it's now possible to tighten up key shaping at high CW speeds without appreciably consuming additional bandwidth. 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
Re: [Elecraft] K3: User responsibility
Very well put. Jim K4JAF - Original Message - From: DOUGLAS ZWIEBEL [EMAIL PROTECTED] To: Elecraft Reflector elecraft@mailman.qth.net Sent: Sunday, March 30, 2008 9:30 AM Subject: [Elecraft] K3: User responsibility K3'ers: When you purchased the K3, you bought into the SDR concept. For me, this meant a self-acknowledgment that I would, of necessity, become an addict of sortswatching the Elecraft Reflector (including reading all of the posts), as well as attempting to stay upright while riding the wave of new releases and other finds. IMO, there is some degree of owner responsibility if you want to keep your radio up to date. Elecraft does provide some hints. You can always just randomly stop by the UPDATE page and check. http://www.elecraft.com/K3/k3_software.htm You can set up your K3 Utility to check automatically (every six hours!) You can visit the Application Notes page: http://www.elecraft.com/K3/k3_app_notes.htm You can visit the Operating Tips page: http://www.elecraft.com/K3/k3_operating_tips.htm Beyond what is provided by Elecraft, you can filter the reflector for only memos from Eric, Wayne, Lyle, etc. Or...you can simply be happy with your version and never check again (as is the case with nearly all non-USA radios out there). For me, buying into the K3 also implied a personal commitment to staying connected. 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 ___ 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 programmable CW rise time
I wonder if it will be possible to shorten rise times as the keying speed increases without needing manual intervention. Only set the desired timing for one speed and the program fixes others automatically; or not as desired. 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
RE: [Elecraft] K3 CW rise time mod - Definition
Looking at the scope picture of a single Morse dit at G4AON's site http://www.astromag.co.uk/k3/k3_envelope2.jpg indicates the trailing edge might be a bigger contributor to potential clicks than the leading edge of the waveform. Note the upper right corner has a fairly sharp transition from on to falling and compare that to the nicely shaped transition at the upper left corner. From all reports the K3 is more than acceptable but if any additional effort is put into CW shaping, the upper right transition may be a place to look. 73, ... Joe, W4TV -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Brian Alsop Sent: Sunday, March 30, 2008 11:01 AM Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 CW rise time mod - Definition For what it is worth, I've just completed a Fourier analysis of the original K3 and revised K3 waveforms presented by G4AON on his website. I was a bit concerned that the sharpening of the leading edge would adversely affect bandwidth and possibly generate clicks. Bottom line for the region of the spectrum between 0 and +/- 200 Hz there is a slight increase in average power (maybe 3 db) for the new sharper waveform. In the range of 200 to 300 Hz the average power increases maybe 10 db. However at this point the spectral energy is down 50 db anyhow. Beyond this 350 Hz, the spectrum energy of the sharper waveform actually falls off relative to the 8ms case. These conclusions are eyeball averages of the sawtooth looking output produced. The teeth go above and below the zero db level. I was pleasantly surprised. Apparently it isn't all in rise time it is also how that waveform is shaped. Here are the assumptions/limitations of the analysis. 1) Code used Fast Fourier Transform by M.F. Hajen 2) A single dit was modeled. 3) Both dits had the same length in the model (about 70ms representing about 20 wpm). 4) Waveforms were digitized in 1 ms steps. 5) The assumption that the waveforms given represented voltage and hence db was calculated by 20 log (amplitude/amplitude at 0 Hz) This doesn't reflect repeating dits or CW made up of dots and dashes. However, it is probably a worse case analysis or close to it. I don't have a web site to post on. There is a .jpg file available of results. Disclaimer I'm not an expert on this or on using the calculational tools. The output does at least agree with the position of the first zero point predicted by a sinx/x formula for a single pulse of near infinite rise time and same width. Clearly it doesn't represent other effects in the rig which affect spectrum. Like a lawyer once said: I'm giving you some free advice, it is worth every penny paid for it 73 de Brian/K3KO . Paul Christensen wrote: I would like to see someone please take this discussion one step further and define the terms hard keying and soft keying, and describe how either an operator or someone listening would be able to discriminate between the two. Gary, this topic has been covered in great detail in nearly every ARRL Handbook for at least the last fifty years -- as well as other publications. Some of the most relevant material is covered in articles during the '40s and '50s by By Goodman and George Garmmer. Not all of the material pertaining to optimum key-shaping is accurate, but otherwise, the content is still accurate. Many of us do not like to be held hostage to one rise/fall setting as a one size fits all answer to our operating practices. With DSP-generated raised-cosine key shaping, it's now possible to tighten up key shaping at high CW speeds without appreciably consuming additional bandwidth. 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 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] Key Line - My Mistake
KPA100 manual, Page 63 - K2/100 Specifications: +200V maximum @ 1 A - Original Message - From: Phil Kane [EMAIL PROTECTED] To: Elecraft elecraft@mailman.qth.net Cc: Jim Miller [EMAIL PROTECTED] Sent: Saturday, March 29, 2008 10:15 PM Subject: Re: [Elecraft] Key Line - My Mistake On 3/29/2008 4:57 PM, Jim Miller wrote: What I cannot find in the Elecraft documentation is the maximum current and voltage that it can switch. Look in the K3 FAQs - if you were to print it out, it is on page 27 of 34 - it is the last item prior to the heading other. http://www.elecraft.com/K3/K3FAQ.htm (search for 6 amps) What is the voltage and current limit to control TX amp relays? The keying device is rated at 200 volts, 6 amps. That is for the K3. The original question - and the one that I have - is for the K2/100. Are they the same? 73 de K2ASP - Phil Kane Elecraft K2/100 s/n 5402 ___ 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: AGC mod
Aki - I have noticed that the HAGC mod makes the AGC THR seem to have more range and effect at the higher values. I also now use my AGC in the OFF position for CW, I enjoy the most energy in the audio and less of a smoothing effect. However for SSB and AM I require more of a smoothing effect as if AGC THR is even lower than the lowest available setup parameter, which I will be looking for in the next firmware update. This is all very low priority for me however because the K3 is already better than anything I have ever tried before. ;-) [Elecraft] K3: AGC mod a.yoshida ayoshida at my.email.ne.jp Sun Mar 30 07:59:38 EST 2008 Previous message: [Elecraft] K3 60m ERR TXG Next message: [Elecraft] k2 rx v.poor fixed Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] Hello I am one of happy K3 users. S/N 00060 I found annoying AGC action when operating CW with 2.8KHz filter even if I configure AGC THR in config menu to highest value. Can we expect more improvement with AGC mod ? I have already ordered CW rise time mod kit and AGC mod kit though. -- 73 de aki, ja1nlx ___ 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 USERS MOTTO
I have a large collection of emails from AC7AC,W3FPR, NOSS, N6KR, WA6HHQ, KK7P and many others on this reflector. I save them because of the technical information in them. KR2Q wrote what I consider should be the K3 USERS MOTTO. I have a copy of it in front of my K3 three ring binder. Thank you Doug. Waiting for a K3, maybe in 2 weeks? 73, Ty, W1TF, K1 #1423 -- Doug wrote: K3'ers: When you purchased the K3, you bought into the SDR concept. For me, this meant a self-acknowledgment that I would, of necessity, become an addict of sortswatching the Elecraft Reflector (including reading all of the posts), as well as attempting to stay upright while riding the wave of new releases and other finds. IMO, there is some degree of owner responsibility if you want to keep your radio up to date. Elecraft does provide some hints. You can always just randomly stop by the UPDATE page and check. http://www.elecraft.com/K3/k3_software.htm You can set up your K3 Utility to check automatically (every six hours!) You can visit the Application Notes page: http://www.elecraft.com/K3/k3_app_notes.htm You can visit the Operating Tips page: http://www.elecraft.com/K3/k3_operating_tips.htm Beyond what is provided by Elecraft, you can filter the reflector for only memos from Eric, Wayne, Lyle, etc. Or...you can simply be happy with your version and never check again (as is the case with nearly all non-USA radios out there). For me, buying into the K3 also implied a personal commitment to staying connected. de Doug KR2Q 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
[Elecraft] K2/100 amplifier keying
Message: 12 Date: Sat, 29 Mar 2008 19:15:41 -0700 From: Phil Kane [EMAIL PROTECTED] Subject: Re: [Elecraft] Key Line - My Mistake To: Elecraft elecraft@mailman.qth.net Cc: Jim Miller [EMAIL PROTECTED] Message-ID: [EMAIL PROTECTED] Content-Type: text/plain; charset=ISO-8859-1; format=flowed On 3/29/2008 4:57 PM, Jim Miller wrote: That is for the K3. The original question - and the one that I have - is for the K2/100. Are they the same? 73 de K2ASP - Phil Kane Elecraft K2/100 s/n 5402 --- Hi, Phil: The answer is not easy to find. It's in the K2/100 manual (p. 59): 200 VDC @ 1 Amp. I'm going to try this with an old Collins 30L-1 this afternoon, and I will keep my fingers crossed that the answer is correct. :-) 73, Bill, N5TU ___ 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 CW rise time mod - Definition
I would like to see someone please take this discussion one step further and define the terms hard keying and soft keying, and describe how either an operator or someone listening would be able to discriminate between the two. My rig is #095 and I frequently contest in the 30-34 WPM range. How would I know if I'm guilty, if guilty is the right word, of soft keying?! Is this an issue only for those who are keying external amplifiers? 73, Gary, VE1RGB - It's completely subjective, Gary, as applied here. Hard keying used to be keying with obvious clicks caused by the sidebands produced by a very abrupt rise from zero to full power and then the drop to zero at the end of each dit or dah. Extremely soft keying is one where you aren't sure a dit or dah has been started until it's nearly done. Obviously hard keying can be easier to copy, since the transition at the start and end of every dit and dah is absolutely clear, but the clicks take up excessive spectrum space. They can be heard off to the sides of the main carrier. In an extreme case, they might be heard several kHz from the signal. The only CW signal with absolutely NO sidebands (clicks) is one that isn't keyed, but careful shaping of the rise from zero to full power and the drop back can minimize them to the point where they are almost inaudible, even very close to the carrier, with rise and fall times appropriate for easy copy at a wide range of CW speeds. It's a trade-off between speed and sidebands. The faster the data rate (CW speed) the wider the signal. It's basic physics, and the reason why an intelligible voice signal must use much more spectrum bandwidth than a CW signal, for example. In an absurdly extreme case for CW, having the keying rise and fall times too slow for the speed would result in a steady CW signal that only varied slightly in strength between dits, dahs and pauses. The signal would still be building up when the dit or dah ended, and then wouldn't reach zero output before the next dit or dah started the rise again. It would sound like a steady carrier with, perhaps, a tiny amount of modulation barely audible at the keying rate. Obviously, such a signal would be useless for CW communications, just as a signal with too hard keying that produces wide sidebands uses up excessive spectrum. The right keying is somewhere in the middle and, obviously, the right characteristic depends upon the keying (CW) speed used. Most rigs, including the Elecraft rigs, adopt a compromise that produces a good, readable signal over the normal keying speeds used by Amateurs. The original values used in the K3 were fine at moderate speeds but, as the speed was increased, it was too soft on the leading edge of each dit or dah for optimum readability. That's what the change in the value of C222 affects. The end result is keying that is easier to read at higher speeds. I normally operate at a maximum speed of 20 or 25 wpm, and didn't think the keying sounded soft at all, nor did anyone I worked mention it. Even so it's a good idea to make the change. The notes with the mod suggest Wayne plans to offer the ability to change the keying characteristic with a menu setting. If so, the values he provides will assume all K3s have the same hardware characteristics. If you don't have the recommended value for C222, the results you get with various menu settings might be quite different than expected. Ron AC7AC ___ 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 CW rise time mod - Definition
Joe Subich, W4TV wrote: Looking at the scope picture of a single Morse dit at G4AON's site http://www.astromag.co.uk/k3/k3_envelope2.jpg indicates the trailing edge might be a bigger contributor to potential clicks than the leading edge of the waveform. Note the upper right corner has a fairly sharp transition from on to falling and compare that to the nicely shaped transition at the upper left corner. From all reports the K3 is more than acceptable but if any additional effort is put into CW shaping, the upper right transition may be a place to look. Wayne has looked into an alternative shaping of the keyed envelope with the intent of reducing the bandwidth of the keyed signal without increasing (and possibly decreasing) the overall rise/fall times. He's put this aside for now because he's working on higher priority projects like the subreceiver, but I expect that at some time we will see this. As K3KO also noted, it's not all in the rise/fall times. -- 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
Re: [Elecraft] K2/100 amplifier keying
This is from the KPA100 Parts List... Q9 - 1 - Transistor, HEXFET, 500 V, IRF830 or IRL620, TO-220 (tab may be cut) It keyed my SB-220 with no problem. If I remember correctly, that is about 100VDC. 73, Ken K3IU Bill Stacy wrote: Message: 12 Date: Sat, 29 Mar 2008 19:15:41 -0700 From: Phil Kane [EMAIL PROTECTED] Subject: Re: [Elecraft] Key Line - My Mistake To: Elecraft elecraft@mailman.qth.net Cc: Jim Miller [EMAIL PROTECTED] Message-ID: [EMAIL PROTECTED] Content-Type: text/plain; charset=ISO-8859-1; format=flowed On 3/29/2008 4:57 PM, Jim Miller wrote: That is for the K3. The original question - and the one that I have - is for the K2/100. Are they the same? 73 de K2ASP - Phil Kane Elecraft K2/100 s/n 5402 --- Hi, Phil: The answer is not easy to find. It's in the K2/100 manual (p. 59): 200 VDC @ 1 Amp. I'm going to try this with an old Collins 30L-1 this afternoon, and I will keep my fingers crossed that the answer is correct. :-) 73, Bill, N5TU ___ 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: TX INHIBIT error
Hi, K3 #82 has a new home here in Central New York. I am having a blast with it in the WPX contest. It has developed a minor problem. After a while, the TX icon below the [A] display label sometimes starts flashing and the radio will not transmit. If I use the XMIT button to key it, the message TX INHIBIT is shown in the B display. Turning radio off and back on instantly cures the problem (haven't found any other way). I doubt if anything is overheating, I am only using SSB with a relatively low duty cycle. Note that the radio is *not* in TEST mode as suggested by some at the Yahoo forum. The symptoms are different as the radio will not enter transmit mode at all. I hope this is not anything serious. It does look like this will only happen when the radio has been on for several hours, not necessarily transmitting a lot. Knut - AB2TC -- View this message in context: http://www.nabble.com/K3%3A-TX-INHIBIT-error-tp16384247p16384247.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: TX INHIBIT error
There is an item in the CONFIG menu called TX INH that you should check... It should be OFF unless you have set something special up. 73, Ken K3IU ab2tc wrote: Hi, K3 #82 has a new home here in Central New York. I am having a blast with it in the WPX contest. It has developed a minor problem. After a while, the TX icon below the [A] display label sometimes starts flashing and the radio will not transmit. If I use the XMIT button to key it, the message TX INHIBIT is shown in the B display. Turning radio off and back on instantly cures the problem (haven't found any other way). I doubt if anything is overheating, I am only using SSB with a relatively low duty cycle. Note that the radio is *not* in TEST mode as suggested by some at the Yahoo forum. The symptoms are different as the radio will not enter transmit mode at all. I hope this is not anything serious. It does look like this will only happen when the radio has been on for several hours, not necessarily transmitting a lot. Knut - AB2TC ___ 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 CW rise time mod - Definition
Terms such as tightening up key shaping and soft keying and hard keying are neither used nor defined in the latest issue of the Handbook. Worse, the latest handbook Figure 9.8 states that on-off transitions of the RF envelope should follow a sine-wave curve, so I don't quite know what to make of DSP-generated raised-cosine key shaping. As to Goodman and Garmmer, I wouldn't be able to identify what is accurate and should be believed and what is inaccurate and should be ignored, so I don't think I'll go looking for those references. And no, Paul, I'm not trying to be a smart-ass here. I'm just a simpleton trying to decode the language used by people who know about such things. Pointing me to the Handbook -- which I should have had sense enough to do on my own -- did help in that it reminded me that key clicks and bandwidth are the issues associated with rise times and curve shapes, which is what I was really looking for, and Figure 9.9, if I study it long enough, may point me to a decision as to whether or not I want to modify ole #95.Either that, or wait for Al, VE1AWP, up the street with his FT1000 to complain about my signal when we both try to contest on the same band at the same time! Great radio and lots of good people around to help us understand it. Thanks, Paul. Gary, VE1RGB Paul Christensen wrote: I would like to see someone please take this discussion one step further and define the terms hard keying and soft keying, and describe how either an operator or someone listening would be able to discriminate between the two. Gary, this topic has been covered in great detail in nearly every ARRL Handbook for at least the last fifty years -- as well as other publications. Some of the most relevant material is covered in articles during the '40s and '50s by By Goodman and George Garmmer. Not all of the material pertaining to optimum key-shaping is accurate, but otherwise, the content is still accurate. Many of us do not like to be held hostage to one rise/fall setting as a one size fits all answer to our operating practices. With DSP-generated raised-cosine key shaping, it's now possible to tighten up key shaping at high CW speeds without appreciably consuming additional bandwidth. 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] Elecraft CW Net news
Just a note. OpenOffice.org Calc is happy with your Excel file. Thanks for including the link to the Excel viewer. 73, Clark N8CBW On Sat, Mar 29, 2008 at 11:53 PM, Kevin Rock [EMAIL PROTECTED] wrote: I am working on the ecn.visionseer.com website. I am trying to figure out a way to post a .xls (Excel spreadsheet) so it is accessible. I think I can post it as an href link and have the user right click and download it. Since I don't use Excel this has been translated from the original spreadsheet document. However, I know this works because of others using my translated files. Now to make it accessible via the web. I may, or may not, get it working tonight. I did get the roster, preamble, and notes updated. ___ 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: TX INHIBIT error
Ken K3IU wrote: There is an item in the CONFIG menu called TX INH that you should check... It should be OFF unless you have set something special up. 73, Ken K3IU snip Thank you! Sure enough, it was enabled, so I turned it off. This feature must be recent, since it is not in the manual. My firmware is up to date. This will probably cure this problem. 73, Knut - AB2TC. -- View this message in context: http://www.nabble.com/K3%3A-TX-INHIBIT-error-tp16384247p16384596.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 CW rise time mod - Definition
My questions about rise times, etc, was really really intended to help me make a decision as to whether or not I wanted to incorporate the modification that started this discussion off. Your comments in the last paragraph make all kinds of sense and so off to the Elecraft Order Page I go. Thanks, Ron. Ron D'Eau Claire wrote: (snip)... Wayne plans to offer the ability to change the keying characteristic with a menu setting. If so, the values he provides will assume all K3s have the same hardware characteristics. If you don't have the recommended value for C222, the results you get with various menu settings might be quite different than expected. Ron AC7AC ___ 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] Cutting component leads in tight places.
Hi Here is a tip that some of you might want to try when building kits and trying to cut off a component lead in close quarters. Like when putting components on the bottom of the board and soldering on the top. I learned it as a farm boy back in the 30's when we couldn't afford a pair of pliers for cutting wire. After you solder the component lead, take a pair of long nose pliers, catch the end of the lead and bend it back and forth five or six times and it will break off at the top of the solder joint. Just be sure to keep tension on the lead while bending it. I didn't learn it building radios, it was fences! Am building my second K2 and just remembered breaking wire that way. 73 Scott N5SM ___ 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] KX1 Internal 11.8v Li-Ion Battery and Solar Charger Update
Hello all, I've had numerous requests from keep ops to keep you updated on my KX1 internal 11.8v Li-ion Battery Modification and my Solar Panel Charger for it. I just updated the results of playing around with a small solar panel to charge the internal battery. I hope you enjoy the results. http://wa3wsj.homestead.com/WA3WSJQRP.html 72, Kangaroo Ed, WA3WSJ ___ 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 CW rise time mod - Definition
...Worse, the latest handbook Figure 9.8 states that on-off transitions of the RF envelope should follow a sine-wave curve, so I don't quite know what to make of DSP-generated raised-cosine key shaping. Let me see if I can shed a glimmer of light here. A sine wave, going from 0 to 360 degrees (or 0 to 2 pi radians if you are of at persuasion), starts at 0, then builds to +1 at 90 degrees (pi/2 radians), dropping down to 0 again at 180 degrees (pi radians), then further dropping to -1 at 270 degrees (3 pi/2 radians) returning to 0 at 360 degrees (2 pi radians). OK, I'll stop the radians now :-) I suggest you sketch this on a sheet of paper to make it easier to follow along. A cosine is shifted by 90 degrees, starting at -1 for 0 degrees, building to +1 at 180 degrees, and dropping again to -1 at 360 degrees. The shape is the same. The cosine starts at its minimum value (-1) at 0 degrees while a sine wave is already halfway between its minimum (-1) and its maximum (+1) at 0 degrees. Our RF power can't go negative in the real world, so if we want to shape our keying, we must go from 0 to some positive value. One way to do this is to add 1 to the sine or cosine value. If we do this, the cosine goes from 0 at 0 degrees, to +2 at 180 degrees, then drops back to 0 at 360 degrees. The sine does the same, just offset. Adding 1 to the value makes it a raised cosine (or a raised sine, if you want to talk about sines -- the wave *shape* is identical). Thus, raised cosine shaping and follows a sine-wave curve are two ways of saying essentially the same thing. Now, the reason we usually talk about a raised cosine is because we (or at least, I) like to start a wave generator at 0 degrees, and a cosine is conveniently at its lowest value at 0 degrees. Thus, to shape the CW waveform, the DSP starts a cosine generator at 0 and applies the result, offset by adding 1, to the RF envelope it is creating. AT 180 degrees, it stops. The RF waveform is at its maximum amplitude, the wave is properly shaped, and your adjacent channel neighbors are happy (or as happy as they're going to be!). The DSP can make this transition time be 5 ms - or 500 microseconds, or 10 seconds, or whatever it sis told to create. If you want to get a good visual look at all this, I highly recommend the paper by James Miller entitled The Shape of Bits to Come. URL:http://www.amsat.org/amsat/articles/g3ruh/108.html If you read it, forget about PSK or FSK, and think about CW waveshaping. Also, remember that CW is traditionally decoded by ear, so any waveshape that requires you to look ahead in time (like the really narrow spectra he describes) would probably sound very odd by ear and would require that the dits and dahs being sent be delayed by 4 or 5 dot times. But it would make you a very good neighbor! 73, 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
Re: [Elecraft] Cutting component leads in tight places.
On Sunday 30 March 2008 1:50:29 pm Scott McDowell wrote: Here is a tip that some of you might want to try when building kits and trying to cut off a component lead in close quarters. Like when putting components on the bottom of the board and soldering on the top. I learned it as a farm boy back in the 30's when we couldn't afford a pair of pliers for cutting wire. After you solder the component lead, take a pair of long nose pliers, catch the end of the lead and bend it back and forth five or six times and it will break off at the top of the solder joint. Just be sure to keep tension on the lead while bending it. I didn't learn it building radios, it was fences! Am building my second K2 and just remembered breaking wire that way. That's a great way to fracture the solder joint and cause future problems with intermittent connections. Never flex the component lead to break it off. Get a proper reduced space close cutting tool. There are a variety of these made for just such a purpose. They do not stress the solder joint when cutting off the excess component lead length. Some will capture the cut off component lead to avoid having it fly off somewhere to cause a failure later if you don't find it. Rick Kunath, k9ao ___ 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] Key Line - My Mistake
Bill: Thanks! I missed that detail. 73, Steve AA4AK At 12:15 PM 3/30/2008, Bill Coleman N2BC wrote: KPA100 manual, Page 63 - K2/100 Specifications: +200V maximum @ 1 A - Original Message - From: Phil Kane [EMAIL PROTECTED] To: Elecraft elecraft@mailman.qth.net Cc: Jim Miller [EMAIL PROTECTED] Sent: Saturday, March 29, 2008 10:15 PM Subject: Re: [Elecraft] Key Line - My Mistake On 3/29/2008 4:57 PM, Jim Miller wrote: What I cannot find in the Elecraft documentation is the maximum current and voltage that it can switch. Look in the K3 FAQs - if you were to print it out, it is on page 27 of 34 - it is the last item prior to the heading other. http://www.elecraft.com/K3/K3FAQ.htm (search for 6 amps) What is the voltage and current limit to control TX amp relays? The keying device is rated at 200 volts, 6 amps. That is for the K3. The original question - and the one that I have - is for the K2/100. Are they the same? 73 de K2ASP - Phil Kane Elecraft K2/100 s/n 5402 ___ 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 CW rise time mod - Definition
Lyle Johnson wrote: Let me see if I can shed a glimmer of light here. As usual, Lyle, a very useful and clearly written tutorial. Thanks! Bill W5WVO ___ 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] Soldering station
I just ordered the new KXV3 RXA board for my K3. The instructions state requirements for the soldering station to be used in the installation of the new board. My workshop has never had need for high tech soldering and consequently I do not own a soldering station. I have several assorted soldering irons and guns that have served me well in the past but I guess I will have to join the modern world. Since I would like to keep updating my K3 it looks like I will need to buy a soldering station. In looking through Googled references I see many stations in the $100 and up range. Is it absolutely necessary to spend that much to ensure the safety of my radio or are there some less expensive suitable alternatives? Nelson - K8DJC -- I am using the free version of SPAMfighter for private users. It has removed 5355 spam emails to date. Paying users do not have this message in their emails. Get the free SPAMfighter here: http://www.spamfighter.com/len ___ 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
default ___ 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
unicode ___ 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 CW rise time mod - Definition
Terms such as tightening up key shaping and soft keying and hard keying are neither used nor defined in the latest issue of the Handbook. My 1998 issue of the ARRL Handbook discusses the relevancy of hard keying on p. 15.7 and even uses that term to try and describe the effect. On the same page, reference is even made to the crispness of keying. Perhaps, the latest editions have eliminated these ambiguous terms. Your initial request was the following: I would like to see someone please take this discussion one step further and define the terms hard keying and soft keying, and describe how either an operator or someone listening would be able to discriminate between the two. The best way to address this is through actual listening to a keyed waveform that varies between 0 ms (i.e., a square wave), and a ramped wave with leading and trailing edges up to 10 ms. This can be easily done on some transceivers (e.g., TS-870S, IC-7800, and Omni VII) although the range may be limited from 2 ms. to perhaps 8 ms. One can listen to the keying on an external receiver while keying the transceiver and varying the wave shaping. In addition to the perceived effect of hard v. soft keying, the ARRL Handbooks tied-in the concept of selective fading; the ability to decipher the transmission in the presence of ionospheric changes and included a chart. That too may have been eliminated recently. Unfortunately, there's is no way to quantify or define subjective terms like hard keying any more than we can quantify a SSB transmission that sounds bassy, tinny, compressed, or distorted. Distortion can take on so many forms that the mere use of the word without further information is meaningless. 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] K3 CW rise time mod - Definition
On Sunday 30 March 2008 01:56:46 pm Lyle Johnson wrote: A cosine is shifted by 90 degrees, starting at -1 for 0 degrees, building to +1 at 180 degrees, and dropping again to -1 at 360 degrees. The cosine of zero is +1 and the cosine of 180 degrees is -1. Ian, G4ICV, AB2GR, K2 #4962 -- ___ 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] Soldering station
I just ordered the new KXV3 RXA board for my K3. The instructions state requirements for the soldering station to be used in the installation of the new board. My workshop has never had need for high tech soldering and consequently I do not own a soldering station. I have several assorted soldering irons and guns that have served me well in the past but I guess I will have to join the modern world. Since I would like to keep updating my K3 it looks like I will need to buy a soldering station. In looking through Googled references I see many stations in the $100 and up range. Is it absolutely necessary to spend that much to ensure the safety of my radio or are there some less expensive suitable alternatives? Nelson - K8DJC -- That mod is one of the easiest in terms of soldering. You are soldering two fine wires to closely-spaced connector terminals that, if overheated, will melt the connector header or lift traces. But it's not nearly as critical as many component installations in other locations. Two more leads are connected to BNC connector terminals that require significant heat in any case. The RXA board comes with the leads pre-attached, so there's no soldering to do to the RXA board itself. It's a judgment call. Elecraft wants you to be successful and your chance of having trouble is greatly reduced by using the right tools, and a good soldering station is a tool you'll use again and again if you do any work on your rigs. You can get away with less. I've repaired a lot of SMD circuit boards sitting cross-legged on the deck in the navigating bridge of a ship using a portable butane-powered soldering iron while holding a flashlight in my teeth. I've also had lots and lots of practice over decades of soldering that lets me judge the temperature of the tip by the smell and, by being very, very careful, I've yet to destroy a board or parts. I did have the advantage of growing up with the pc board industry, first working on boards back in the 1960s that had large push-in pins to which leads were soldered, then boards with big thick, wide traces that have slowly evolved into the tissue-thin, tiny traces we find on many boards today. Even so, whenever possible I'll use a temperature-controlled soldering station in a comfortable, well-lit shop. Over time, I've found that a good soldering station costs me pennies a month to own and use. I don't consider that too much to spend to protect circuit boards, almost any one of which is worth more than the iron. I currently have a Hakko 936 that cost me less than $100 several years ago from www.tequipment.net. Bottom line, it's a matter of how skilled you are at soldering and how much risk you are comfortable taking with the pc board and components. Ron AC7AC ___ 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 100 Watt Pa Problem
Hello, I was wondering if anyone else has had a problem like ythis one? I'm was in the process of finishing up my KPA 100. All of the power supply, bias adjustments etc went as per the book. When I got to page 50 in the manual to test the transmitter at high power the problem shows up. With the Power out turned to around 11 watts, the relay clicks and the power out is taken over by the KPA 100. Every thing works great until I get to right at 20 watts. Any power level 20 watts or over, when it is keyed, a relay klicks, power out shuts off and nothing out. At 18 watts the power out from the KPA 100 is fine. There are no error messages that I can find, even on the secondary message menus. Any suggestions why the PA works up to 20 watts then shuts down with no error message? Best, DW Holtman WB7SSN - Original Message - From: Ron D'Eau Claire [EMAIL PROTECTED] To: 'Nelson Wittstock' [EMAIL PROTECTED]; Elecraft@mailman.qth.net Sent: Sunday, March 30, 2008 2:00 PM Subject: RE: [Elecraft] Soldering station I just ordered the new KXV3 RXA board for my K3. The instructions state requirements for the soldering station to be used in the installation of the new board. My workshop has never had need for high tech soldering and consequently I do not own a soldering station. I have several assorted soldering irons and guns that have served me well in the past but I guess I will have to join the modern world. Since I would like to keep updating my K3 it looks like I will need to buy a soldering station. In looking through Googled references I see many stations in the $100 and up range. Is it absolutely necessary to spend that much to ensure the safety of my radio or are there some less expensive suitable alternatives? Nelson - K8DJC -- That mod is one of the easiest in terms of soldering. You are soldering two fine wires to closely-spaced connector terminals that, if overheated, will melt the connector header or lift traces. But it's not nearly as critical as many component installations in other locations. Two more leads are connected to BNC connector terminals that require significant heat in any case. The RXA board comes with the leads pre-attached, so there's no soldering to do to the RXA board itself. It's a judgment call. Elecraft wants you to be successful and your chance of having trouble is greatly reduced by using the right tools, and a good soldering station is a tool you'll use again and again if you do any work on your rigs. You can get away with less. I've repaired a lot of SMD circuit boards sitting cross-legged on the deck in the navigating bridge of a ship using a portable butane-powered soldering iron while holding a flashlight in my teeth. I've also had lots and lots of practice over decades of soldering that lets me judge the temperature of the tip by the smell and, by being very, very careful, I've yet to destroy a board or parts. I did have the advantage of growing up with the pc board industry, first working on boards back in the 1960s that had large push-in pins to which leads were soldered, then boards with big thick, wide traces that have slowly evolved into the tissue-thin, tiny traces we find on many boards today. Even so, whenever possible I'll use a temperature-controlled soldering station in a comfortable, well-lit shop. Over time, I've found that a good soldering station costs me pennies a month to own and use. I don't consider that too much to spend to protect circuit boards, almost any one of which is worth more than the iron. I currently have a Hakko 936 that cost me less than $100 several years ago from www.tequipment.net. Bottom line, it's a matter of how skilled you are at soldering and how much risk you are comfortable taking with the pc board and components. Ron AC7AC ___ 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: Soldering Station
Just checked out the Hakko 936-12 soldering station using the URL provided by Ron, AC7AC, and discovered that the soldering station is on sale for $78.80. I bought one a while back and it is a super soldering station. It has relegated my Weller WTCPT soldering station to back-up use. To take a look at the Hakko go to: http://www.tequipment.net/Hakko936-12.html 73, Joe W2KJ I QRP, therefore I 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
Re: [Elecraft] K2 100 Watt Pa Problem
Hello, I just noticed something else on this problem. The whole radio resets, like turning it off then on again. The word Elecraft pops up on the LCD and the DSP red light blinks on, just like I turned it off then on again. Any suggestions? Best, DW Holtman WB7SSN - Original Message - From: DW Holtman [EMAIL PROTECTED] To: Elecraft@mailman.qth.net Sent: Sunday, March 30, 2008 2:09 PM Subject: [Elecraft] K2 100 Watt Pa Problem Hello, I was wondering if anyone else has had a problem like ythis one? I'm was in the process of finishing up my KPA 100. All of the power supply, bias adjustments etc went as per the book. When I got to page 50 in the manual to test the transmitter at high power the problem shows up. With the Power out turned to around 11 watts, the relay clicks and the power out is taken over by the KPA 100. Every thing works great until I get to right at 20 watts. Any power level 20 watts or over, when it is keyed, a relay klicks, power out shuts off and nothing out. At 18 watts the power out from the KPA 100 is fine. There are no error messages that I can find, even on the secondary message menus. Any suggestions why the PA works up to 20 watts then shuts down with no error message? Best, DW Holtman WB7SSN - Original Message - From: Ron D'Eau Claire [EMAIL PROTECTED] To: 'Nelson Wittstock' [EMAIL PROTECTED]; Elecraft@mailman.qth.net Sent: Sunday, March 30, 2008 2:00 PM Subject: RE: [Elecraft] Soldering station I just ordered the new KXV3 RXA board for my K3. The instructions state requirements for the soldering station to be used in the installation of the new board. My workshop has never had need for high tech soldering and consequently I do not own a soldering station. I have several assorted soldering irons and guns that have served me well in the past but I guess I will have to join the modern world. Since I would like to keep updating my K3 it looks like I will need to buy a soldering station. In looking through Googled references I see many stations in the $100 and up range. Is it absolutely necessary to spend that much to ensure the safety of my radio or are there some less expensive suitable alternatives? Nelson - K8DJC -- That mod is one of the easiest in terms of soldering. You are soldering two fine wires to closely-spaced connector terminals that, if overheated, will melt the connector header or lift traces. But it's not nearly as critical as many component installations in other locations. Two more leads are connected to BNC connector terminals that require significant heat in any case. The RXA board comes with the leads pre-attached, so there's no soldering to do to the RXA board itself. It's a judgment call. Elecraft wants you to be successful and your chance of having trouble is greatly reduced by using the right tools, and a good soldering station is a tool you'll use again and again if you do any work on your rigs. You can get away with less. I've repaired a lot of SMD circuit boards sitting cross-legged on the deck in the navigating bridge of a ship using a portable butane-powered soldering iron while holding a flashlight in my teeth. I've also had lots and lots of practice over decades of soldering that lets me judge the temperature of the tip by the smell and, by being very, very careful, I've yet to destroy a board or parts. I did have the advantage of growing up with the pc board industry, first working on boards back in the 1960s that had large push-in pins to which leads were soldered, then boards with big thick, wide traces that have slowly evolved into the tissue-thin, tiny traces we find on many boards today. Even so, whenever possible I'll use a temperature-controlled soldering station in a comfortable, well-lit shop. Over time, I've found that a good soldering station costs me pennies a month to own and use. I don't consider that too much to spend to protect circuit boards, almost any one of which is worth more than the iron. I currently have a Hakko 936 that cost me less than $100 several years ago from www.tequipment.net. Bottom line, it's a matter of how skilled you are at soldering and how much risk you are comfortable taking with the pc board and components. Ron AC7AC ___ 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:
Re: [Elecraft] Soldering station
Nelson Wittstock K8DJC wrote: Since I would like to keep updating my K3 it looks like I will need to buy a soldering station. In looking through Googled references I see many stations in the $100 and up range. Is it absolutely necessary to spend that much to ensure the safety of my radio or are there some less expensive suitable alternatives? No it's not necessary. The Circuit Specialists CSI-STATION1A is a virtual clone of the Hakko 936...same circuit diagram, same ESD protection, same physical construction and uses the same tips...but it only costs $39.95. http://www.circuitspecialists.com/prod.itml/icOid/7307 It comes with a 0.8 mm conical tip (good for fine pitch SMD digital devices) but I would also recommend a 1.6 mm chisel tip (KD-M-1.6D for $4.95) for general use (including all recent K3 mods, K2 thru-hole assembly, etc). If you order at least $50.00 worth, you can also get a DMM free. http://www.circuitspecialists.com/level.itml/icOid/190 73, Bill W4ZV -- View this message in context: http://www.nabble.com/Soldering-station-tp16385427p16387186.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] 15 Meters
Hello, 15m is open. Just worked John de WA6L running his K3 with 100w. Had a good short QSO before the QSB got us. 72 and Thanks, Ron Polityka WB3AAL www.wb3aal.com www.n3epa.org/ K1 - SN 01011 K2 - SN 01392 ___ 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 100 Watt Pa Problem
You might want to make sure your power supply isn't doing its foldback or current limiting thing. If it is, symptoms you've described should repeat 100% of the time. matt, W6NIA k3 # 24 On Sun, 30 Mar 2008 14:19:11 -0600, you wrote: Hello, I just noticed something else on this problem. The whole radio resets, like turning it off then on again. The word Elecraft pops up on the LCD and the DSP red light blinks on, just like I turned it off then on again. Any suggestions? Best, DW Holtman WB7SSN - Original Message - From: DW Holtman [EMAIL PROTECTED] To: Elecraft@mailman.qth.net Sent: Sunday, March 30, 2008 2:09 PM Subject: [Elecraft] K2 100 Watt Pa Problem Hello, I was wondering if anyone else has had a problem like ythis one? I'm was in the process of finishing up my KPA 100. All of the power supply, bias adjustments etc went as per the book. When I got to page 50 in the manual to test the transmitter at high power the problem shows up. With the Power out turned to around 11 watts, the relay clicks and the power out is taken over by the KPA 100. Every thing works great until I get to right at 20 watts. Any power level 20 watts or over, when it is keyed, a relay klicks, power out shuts off and nothing out. At 18 watts the power out from the KPA 100 is fine. There are no error messages that I can find, even on the secondary message menus. Any suggestions why the PA works up to 20 watts then shuts down with no error message? Best, DW Holtman WB7SSN - Original Message - From: Ron D'Eau Claire [EMAIL PROTECTED] To: 'Nelson Wittstock' [EMAIL PROTECTED]; Elecraft@mailman.qth.net Sent: Sunday, March 30, 2008 2:00 PM Subject: RE: [Elecraft] Soldering station I just ordered the new KXV3 RXA board for my K3. The instructions state requirements for the soldering station to be used in the installation of the new board. My workshop has never had need for high tech soldering and consequently I do not own a soldering station. I have several assorted soldering irons and guns that have served me well in the past but I guess I will have to join the modern world. Since I would like to keep updating my K3 it looks like I will need to buy a soldering station. In looking through Googled references I see many stations in the $100 and up range. Is it absolutely necessary to spend that much to ensure the safety of my radio or are there some less expensive suitable alternatives? Nelson - K8DJC -- That mod is one of the easiest in terms of soldering. You are soldering two fine wires to closely-spaced connector terminals that, if overheated, will melt the connector header or lift traces. But it's not nearly as critical as many component installations in other locations. Two more leads are connected to BNC connector terminals that require significant heat in any case. The RXA board comes with the leads pre-attached, so there's no soldering to do to the RXA board itself. It's a judgment call. Elecraft wants you to be successful and your chance of having trouble is greatly reduced by using the right tools, and a good soldering station is a tool you'll use again and again if you do any work on your rigs. You can get away with less. I've repaired a lot of SMD circuit boards sitting cross-legged on the deck in the navigating bridge of a ship using a portable butane-powered soldering iron while holding a flashlight in my teeth. I've also had lots and lots of practice over decades of soldering that lets me judge the temperature of the tip by the smell and, by being very, very careful, I've yet to destroy a board or parts. I did have the advantage of growing up with the pc board industry, first working on boards back in the 1960s that had large push-in pins to which leads were soldered, then boards with big thick, wide traces that have slowly evolved into the tissue-thin, tiny traces we find on many boards today. Even so, whenever possible I'll use a temperature-controlled soldering station in a comfortable, well-lit shop. Over time, I've found that a good soldering station costs me pennies a month to own and use. I don't consider that too much to spend to protect circuit boards, almost any one of which is worth more than the iron. I currently have a Hakko 936 that cost me less than $100 several years ago from www.tequipment.net. Bottom line, it's a matter of how skilled you are at soldering and how much risk you are comfortable taking with the pc board and components. Ron AC7AC ___ 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 100 Watt Pa Problem
From the description of your problem it could be your power supply. Check the power supply voltage with a analog or digital voltmeter, under load it should not drop below 12V. The K2/ KPA100 requires a good high current power supply. I use an Alinco DM-330MV set to 13.8V. This power supply is rated for an output current of up to 32 Amperes. GL 73, Bob Johansen WB2SRF K2 S/N 5622 ___ 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 CW rise time mod - Definition
A cosine is shifted by 90 degrees, starting at -1 for 0 degrees, building to +1 at 180 degrees, and dropping again to -1 at 360 degrees. The cosine of zero is +1 and the cosine of 180 degrees is -1. Ah, I shoud've checked my math before I hit send. Yes, you are correct. Lyle ___ 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: AGC mod
Don Thanks for your comment. Although AGC OFF is a way to avoid annoying action my EAR does not prefer sudden loud audio. I will enjoy unsoldering SMD parts , Hi Thanks On Mon, 31 Mar 2008 01:17:16 +0900, Don Rasmussen [EMAIL PROTECTED] wrote: Aki - I have noticed that the HAGC mod makes the AGC THR seem to have more range and effect at the higher values. I also now use my AGC in the OFF position for CW, I enjoy the most energy in the audio and less of a smoothing effect. However for SSB and AM I require more of a smoothing effect as if AGC THR is even lower than the lowest available setup parameter, which I will be looking for in the next firmware update. This is all very low priority for me however because the K3 is already better than anything I have ever tried before. ;-) [Elecraft] K3: AGC mod a.yoshida ayoshida at my.email.ne.jp Sun Mar 30 07:59:38 EST 2008 Previous message: [Elecraft] K3 60m ERR TXG Next message: [Elecraft] k2 rx v.poor fixed Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] Hello I am one of happy K3 users. S/N 00060 I found annoying AGC action when operating CW with 2.8KHz filter even if I configure AGC THR in config menu to highest value. Can we expect more improvement with AGC mod ? I have already ordered CW rise time mod kit and AGC mod kit though. -- 73 de aki, ja1nlx http://www.asahi-net.or.jp/~yy7a-ysd/ http://ja1nlx.blog109.fc2.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 100 Watt Pa Problem
Hello, I want to thank Matt, W6NLA, Robie - AJ4F and Mike AI4NS for their inputs. They all three hit the nail on the head. I was using an Astron linear 35 amp supply. I bought in recently on Ebay, and assumed it worked, because it reads 13.8VDC with no load. I hooked up a 20 Amp Astron and it no longer trips. Guess I will be looking for a schematic diagram for an Astron RS-35A Power supply. I also was feeding the RS-35A through an MFJ 1118 outlet box. I might have to take a good look at it too. Now I have a different problem. It stays up and transmits, but only puts out about 23 watts. The Power Supply is reading 13.6VDC at 23 watts, that is not the problem. The LCD shows the correct power at 23 watts (even though the power level pot is set for anywhere from 25 to 100 Watts) and a 1.0 to 1 SWR. I'm transmitting into an MFJ tuner in the dummy load switch position. I think this might be something I did wrong with the set-up. I'm going to go through the whole set up again step by step. Thanks again to a fine group on this forum. Best, DW Holtman WB7SSN - Original Message - From: Matt Zilmer [EMAIL PROTECTED] To: DW Holtman [EMAIL PROTECTED] Cc: DW Holtman [EMAIL PROTECTED]; Elecraft@mailman.qth.net Sent: Sunday, March 30, 2008 3:10 PM Subject: Re: [Elecraft] K2 100 Watt Pa Problem You might want to make sure your power supply isn't doing its foldback or current limiting thing. If it is, symptoms you've described should repeat 100% of the time. matt, W6NIA k3 # 24 On Sun, 30 Mar 2008 14:19:11 -0600, you wrote: Hello, I just noticed something else on this problem. The whole radio resets, like turning it off then on again. The word Elecraft pops up on the LCD and the DSP red light blinks on, just like I turned it off then on again. Any suggestions? Best, DW Holtman WB7SSN - Original Message - From: DW Holtman [EMAIL PROTECTED] To: Elecraft@mailman.qth.net Sent: Sunday, March 30, 2008 2:09 PM Subject: [Elecraft] K2 100 Watt Pa Problem Hello, I was wondering if anyone else has had a problem like ythis one? I'm was in the process of finishing up my KPA 100. All of the power supply, bias adjustments etc went as per the book. When I got to page 50 in the manual to test the transmitter at high power the problem shows up. With the Power out turned to around 11 watts, the relay clicks and the power out is taken over by the KPA 100. Every thing works great until I get to right at 20 watts. Any power level 20 watts or over, when it is keyed, a relay klicks, power out shuts off and nothing out. At 18 watts the power out from the KPA 100 is fine. There are no error messages that I can find, even on the secondary message menus. Any suggestions why the PA works up to 20 watts then shuts down with no error message? Best, DW Holtman WB7SSN - Original Message - From: Ron D'Eau Claire [EMAIL PROTECTED] To: 'Nelson Wittstock' [EMAIL PROTECTED]; Elecraft@mailman.qth.net Sent: Sunday, March 30, 2008 2:00 PM Subject: RE: [Elecraft] Soldering station I just ordered the new KXV3 RXA board for my K3. The instructions state requirements for the soldering station to be used in the installation of the new board. My workshop has never had need for high tech soldering and consequently I do not own a soldering station. I have several assorted soldering irons and guns that have served me well in the past but I guess I will have to join the modern world. Since I would like to keep updating my K3 it looks like I will need to buy a soldering station. In looking through Googled references I see many stations in the $100 and up range. Is it absolutely necessary to spend that much to ensure the safety of my radio or are there some less expensive suitable alternatives? Nelson - K8DJC -- That mod is one of the easiest in terms of soldering. You are soldering two fine wires to closely-spaced connector terminals that, if overheated, will melt the connector header or lift traces. But it's not nearly as critical as many component installations in other locations. Two more leads are connected to BNC connector terminals that require significant heat in any case. The RXA board comes with the leads pre-attached, so there's no soldering to do to the RXA board itself. It's a judgment call. Elecraft wants you to be successful and your chance of having trouble is greatly reduced by using the right tools, and a good soldering station is a tool you'll use again and again if you do any work on your rigs. You can get away with less. I've repaired a lot of SMD circuit boards sitting cross-legged on the deck in the navigating bridge of a ship using a portable butane-powered soldering iron while holding a flashlight in my teeth. I've also had lots and lots of practice over decades of soldering that lets me judge the temperature of the tip by the smell and, by being very, very careful, I've yet to destroy a board or parts. I did
[Elecraft] K2 Backlight LED leads too short
My K2 backlight assembly is to be mounted 1/8 above the board but the leads to the LED's are 1/8. Is there a solution or special technique to install this that is not spelled out in the manual? 73, Tom KB3PNU Wimsatt Website: http://wimsatt.truepath.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 Backlight LED leads too short
Tom, Here is what I did, click on K2 diffuser http://www.heavymetalradios.com/ I think Elecraft recommends soldering it together without a mechanical connection. Hope this helps. Best, DW Holtman WB7SSN - Original Message - From: [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Sunday, March 30, 2008 4:09 PM Subject: [Elecraft] K2 Backlight LED leads too short My K2 backlight assembly is to be mounted 1/8 above the board but the leads to the LED's are 1/8. Is there a solution or special technique to install this that is not spelled out in the manual? 73, Tom KB3PNU Wimsatt Website: http://wimsatt.truepath.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: [META] [Elecraft] test
Robert Friess wrote: unicode All you've proved is that a UTF-8 character set header gets through (none of your message was other than the ASCII subset of Unicode). You can't prove that everyone on the list has mail readers that understand UTF-8 and have suitable fonts available and selected . You haven't even proved that the list is 8 bit clean. Incidentally, when testing on live lists it is a good idea to explain exactly why you needed to do a test on the live list. Actually, there was at least one other message in the current digest that tested UTF-8 incidentally to being a real article and that one does have a character that is in neither ASCII nor ISO 8859/1 (U+2122). This worked in both the digest and the qth.net web interface, with my viewers and fonts. (The ASCII encoding of ASCII characters is identical to the UTF-8 encoding of them.) -- David Woolley The Elecraft list is a forum for the discussion of topics related to Elecraft products and more general topics related ham radio List Guidelines http://www.elecraft.com/elecraft_list_guidelines.htm ___ 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 Backlight LED leads too short
See Errata G4 to the Owner's Manual, item 2. You should have gotten it with your kit, but if not it's available on the Elecraft web site here: http://www.elecraft.com/manual/K2_Errata_Rev_G-4.pdf Ron AC7AC -Original Message- My K2 backlight assembly is to be mounted 1/8 above the board but the leads to the LED's are 1/8. Is there a solution or special technique to install this that is not spelled out in the manual? 73, Tom KB3PNU Wimsatt Website: http://wimsatt.truepath.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 arriving
Boy the lack of K3's arriving has been sudden. The last arrival notice I've seen and added to the spreadsheet is serial no 615 on 3/20. Anyone get one more recently than that? ___ 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] FW: T1 oh-oh
Does this ever frustrate me but it is easier to say oops, and may be speedier to ask, than to figure it out myself. Yes I know the difference and the pinout of Mr. MCU. Then after passing all the prelim tests... nothing. A little bird whispered into my ear about the interuption just about the time I was placing the IC into the socket. And.. being in the death to ICs hurry... not rechecking the orientation. Well.. the IC was sure 'nuff in backwards. So.. removal, replace in socket correctly... Still no relays no bypass, but the leds pass the prelim test... Any ideas? statements... wetnoodle lashings...?? Did it commit IC-icide? --... ...-- Dale - WC7S in Wy _ Watch “Cause Effect,” a show about real people making a real difference. Learn more. http://im.live.com/Messenger/IM/MTV/?source=text_watchcause___ 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: Junk: [Elecraft] K3's arriving
On Sun, 30 Mar 2008 16:20:39 -0700, you wrote: Boy the lack of K3's arriving has been sudden. The last arrival notice I've seen and added to the spreadsheet is serial no 615 on 3/20. Anyone get one more recently than that? [snip] Not all Elecraft customers report the arrival of their K3's. People who are getting them now ordered after July of 2007, so they are probably not as interested in keeping track of the delivery statistics as early buyers were. 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 High Current Level
Hi gang: One other question to insure I am not setting myself up for disappointment. :-) When you use CAL CUR to set the current limit, is there a limit to how high one can go without jeopardizing the rig?? My K2 has the KSB2, KDSP2, KNB2, KAT2, KBT2, KIO2K160RX installed. When I key the rig with it set to 10 watts out, I'm getting about 2.8 amps of draw. I didn't figure that was unusual with all the options on board. BUT it kept giving me a high current warning when I first key up and it appeared to be cutting my output back. So, I went into CAL CUR and raised the current limit to 3.0 amps. Initial setting per the manual was 2.5 amps. Just wanted to be sure I wasn't going to burn the house down What cha think ?? 72 Jerry N0JRN ___ 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] Trade NIB 400 Hz Roofing Filter for K3 for 250 Hz
I have a not yet installed 400 Hz filter for my K3 and would rather, with the particular filter complement I have, install a 250 Hz 8-pole. If you are interested in a trade please email off list Thanks John, N6AX K3 567 Robert Friess wrote: default ___ 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 High Current Level
Jerry, The KSB2 Adapter operating instructions (page 22) indicate that CAL CUR should be set to a maximum of 3.5 amps. Mine is set to 3.5 amps and under some conditions I get an HI CUR using a Heil ICM microphone. I use the lower mic gain setting and the K2 seems to work very well. Robie - AJ4F On Sun, Mar 30, 2008 at 7:19 PM, n0jrn [EMAIL PROTECTED] wrote: Hi gang: One other question to insure I am not setting myself up for disappointment. :-) When you use CAL CUR to set the current limit, is there a limit to how high one can go without jeopardizing the rig?? My K2 has the KSB2, KDSP2, KNB2, KAT2, KBT2, KIO2K160RX installed. When I key the rig with it set to 10 watts out, I'm getting about 2.8 amps of draw. I didn't figure that was unusual with all the options on board. BUT it kept giving me a high current warning when I first key up and it appeared to be cutting my output back. So, I went into CAL CUR and raised the current limit to 3.0 amps. Initial setting per the manual was 2.5 amps. Just wanted to be sure I wasn't going to burn the house down What cha think ?? 72 Jerry N0JRN ___ 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] IF passband graphic
Hi, Is it just me or is the graphic display of the IF passband rather erratic? I won't go into any detail, but have anybody else noticed that the display is not only dependent on the current passband state but past history like if the radio has just been turned on, the knobs have been touched since powerup, etc? Knut - AB2TC new proud K3 owner -- View this message in context: http://www.nabble.com/IF-passband-graphic-tp16389798p16389798.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] K2: Broadcast Station Breakthrough on the 80 Metre Band
Hi Gang, Here's a funny thing. I have just replaced my two parallel connected dipoles (one cut for 80, the other cut for 40, connected together at the apex and fed by a 1:1 balun and RG58CU coax) with a double zepp with just one set of radiating elements cut a little longer than required to resonate on 3.6 MHz, and fed with 450 ohm balanced line connected to a 4:1 balun just outside the shack and a short length of RG58CU to the K2 with KAT100. The apex of the new antenna is some 12 feet or so higher than the old as I now leave my wind-up tower fully extended. (Extended height is about 45 feet). Seems to work well, except that I noted considerable broadcast station breakthrough on the 80 metre band that was not experienced with the old dipoles. However, when the Tune button is held and the KAT100 does its magic, the breakthrough disappears. Curious. 73 Kevin VK3DAP / ZL2DAP ___ 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] Problems with my K2 --- can anyone help??
My K2 just started with these issues yesterday. Does anyone have any suggestion other than sending the rig to Elecraft? When I power the K2 up, it is like it has no antenna connection (I have the KAT 100 external tuner that I use with the rig). When I also power up only a few of the letters for ELECRAFT appear on the LED Screen. Maybe 3 or 4 letters only and the S meter has three bars then a few blank and then 2 filled in. The rig sounds like it is almost muted or at times no audio. Also when I power up, the KAT 100 shows the rig in the low power position even though I have the pot set for 100 watts. It can take me about 5 to 10 minutes of turning the rig on and off until it will then function normally. Once normal it is fine unless the rig is off for about an hour. If I turn the rig off for an hour and come back to it it will not start normally and I have the same issues all over again. I have checked all of my connections into the rig especially the power connections and antenna connections. It kind of reminds me if I had an IC that was somehow failing somewhere? Thanks for the feedback! Best 73's -- Norm K9NK ___ 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: Broadcast Station Breakthrough on the 80 Metre Band
Hello Kevin! too much antenna gain - better cut it in half - HI! The tuner maybe acting like a BandPass filter keeping the the BC out. You may have sufficient gain at BC frequencies now with the new antenna. At times, especially in foggy or wet local conditions, I receive interesting things when using my 80m 1/4 wave vertical. Within a few short miles are MW BC towers. Have fun with the new antenna! Ken, KA0W K2/100 --- KBG Luxford [EMAIL PROTECTED] wrote: Hi Gang, Here's a funny thing. I have just replaced my two parallel connected dipoles (one cut for 80, the other cut for 40, connected together at the apex and fed by a 1:1 balun and RG58CU coax) with a double zepp with just one set of radiating elements cut a little longer than required to resonate on 3.6 MHz, and fed with 450 ohm balanced line connected to a 4:1 balun just outside the shack and a short length of RG58CU to the K2 with KAT100. The apex of the new antenna is some 12 feet or so higher than the old as I now leave my wind-up tower fully extended. (Extended height is about 45 feet). Seems to work well, except that I noted considerable broadcast station breakthrough on the 80 metre band that was not experienced with the old dipoles. However, when the Tune button is held and the KAT100 does its magic, the breakthrough disappears. Curious. 73 Kevin VK3DAP / ZL2DAP ___ 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] Problems with my K2 --- can anyone help??
At 20:36:49 EST on Sunday Mar 30th, 2008 Norm Klieman (K9NK) wrote ... My K2 just started with these issues yesterday. Does anyone have any suggestion other than sending the rig to Elecraft? : : It kind of reminds me if I had an IC that was somehow failing somewhere? -- Hi Norm, At first glance this sounds like classic unsoldered IC pin problem, probably on one of the larger MCU devices. How old is your rig? Don't send the rig to Elecraft without first opening it up and checking that all of the pins are soldered. 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 finally up and working.
Hello, Thank you to everyone who helped me along the way building my K2. I crossed the last hurddle today and got the KPA-100 up and running. I got it on the air and made my first contact with K0DT in Iowa. I was only pushing around 50 watts. I'm still a little nervous about the KPA-100. Happy to finally get the chance to put this little rig to work. 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] Elecraft CW Net Report for March 30th 31st, 2008
Good Evening, As the snow fell we held our nets. From the weather report I am reading the snow should end in a day or two. Good! I am a little tired of digging down to the woodpile. The winter has lasted long enough and my last woodpile will be gone soon if this keeps up. Looks like I have some ready made chores for when the sun comes back. Hopefully the daffodils will survive the foot of snow around them. Luckily none of them had budded before the snow returned. Today twenty meters had a high noise floor. Appears the sun has been sending a stream at us which is causing the noise. Forty meters had less atmospheric noise but there was a quite loud station right on frequency who could not hear any of us. Made copy of the less than S5 stations a chore. QSB often dragged stations below that point. I don't think I had a headache during the twenty meter net but I sure did during the forty meter one! Aspirin, dinner, and a break from the headphones have eased it somewhat. On to the lists = On 14040 kHz at 2300z: N0SS - Tom - MO - K3 - 008 K9DMV - Joe - IL - K2 - 5628 W0CZ - Ken - ND - K3 - 457 K9ZTV - Kent - MO - K3 - 21 N0JRN - Jerry - MO - K2 - 6272 AB9V - Mike - IN - K3 - 398 KC7OTG - Brett - OR - K1 - 2474 WA7BOC - Roger - WA - K3 - 75 K6PJV - Dale - CA - K2 - 5345 W6ZH - Pete - CA - K1 - 553 N0AR - Scott - MN - K2 - 4866 NO8V - John - MI K0PC - Pat - MN - KX1 - 549 On 7045 kHz at 0100z: W7AQK - Dave - AZ - K3 - 96 W6ZH - Pete - CA - K1 - 553 AB9V - Mike - IN - K3 - 398 W6PSC - Buffy - CA WB8RTJ - Jim - OH - K2 - 5886 QNI #5! K9ZTV - Kent - MO - K3 - 21 K6PJV - Dale - CA - K2 - 5345 QNI #60!!! W0JFR - John - CO - K2 - 4507 NO8V - John - MI QNI #20!! N0AR - Scott - MN - K2 - 4866 ** QNI #110 ** K4JPN - Steve - GA - K2 - 1422QNI #85!!! W0SZ - Steve - CO - K3 - 176 K0PC - Pat - MN - KX1 - 549 KL7V/4 - Sam - AL - K2 - 6143 WB5BKL - Nick - TX - K3 - 231 Except for the headache I had fun. Yes, I enjoy doing this, can't you tell? If you go to the web site: ecn.visionseer.com you will find some updates to it. Long in coming updates! However, you can now look at the spreadsheet which logs all of the data I store. Please check through it and send me any corrections. It may take a while to get them all fixed but I truly hope not! I try to fix it each week as it begins to run away with itself. A few notes are in order so you can understand my system. Serial numbers are prefaced by a character: k for K1, x for KX1, t for K3, or nothing for K2. The first page is ordered by letters in the suffix and the order you first checked in. The second page is ordered by when you checked in. It also lists each date you checked in and on which net thusly: 20 meters/40 meters. There were times when there was only one net; this was on 20 meters. The next page is in a histogram form listing how many times you have checked in by fives or more. The next page is what I print out and keep in front of me to give me some hints. Normally I remember your name but this is how I get help on those days when I just don't have things together ;) If you look at the next page you will see there are still two more states necessary for the Elecraft WAS award: DE and SD. And the last page is a list of serial numbers. Please check this and send me any corrections. I will try to repost this spreadsheet on the web site every so often (AKA when I get time and the gumption). Thank you for so many fun years and so many check ins. Stay healthy so I can work you all again next week! 73, Kevin. KD5ONS (Net Control Operator 5th Class) ___ 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
