Re: [Elecraft] K7WTG Dayton
I think that is a reasonable request also some will never attend due to health issues either. 73, Fred/N0AZZ K3 Ser #'s 6730/5299--KX3 # 2573--K2/100--KAT100 P3/SVGA--KPA500--KAT500--W2 -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jeff KB2M Sent: Friday, May 17, 2013 12:27 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K7WTG Dayton Even though I'm not planning any Elecraft purchases in the near future I agree this doesn't seem fair. Also, almost every major retailer has a 'Dayton discount' for the 3 days of the hamfest. I would think it would be in Elecraft's best interest to extend the discount to the less fortunate who can't go to Dayton, for whatever reason. 73 Jeff kb2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Harry White Sent: Friday, May 17, 2013 13:09 PM To: 'Howard Stephenson'; k7...@arrl.net Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] K7WTG Dayton Howard, That sure seems like a massively unfair policy. There are many, many of us who simply cannot afford to go to Dayton but would appreciate a discount during the once-a-year hamfest. So if you have money and can afford to go to Dayton, you get a cheaper price for Elecraft products. Wow. Harry K1RSA -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Howard Stephenson Sent: Friday, May 17, 2013 12:57 PM To: k7...@arrl.net Cc: elecraft@mailman.qth.net Subject: [Elecraft] K7WTG Dayton Pete, We'll be happy to take any order from you. We just can't give you the Dayton Special unless you are there. -- -- 73, Howard Stephenson K6IA Elecraft Customer Support (831) 763-4211 EXT 169 -- __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html - No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.2904 / Virus Database: 3162/6330 - Release Date: 05/16/13 - No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.2904 / Virus Database: 3162/6330 - Release Date: 05/16/13 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Elecraft Hats at Dayton?
Wayne could I pre-order 3 left over hats from Dayton when you get back? If so I would even prepay for them.NOW 73, Fred/N0AZZ K3 Ser #'s 6730/5299--KX3 # 2573--K2/100--KAT100 P3/SVGA--KPA500--KAT500--W2 -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Barry Sent: Friday, May 17, 2013 1:43 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Elecraft Hats at Dayton? I thought you would be GIVING them away in Dayton, not SELLING them :.( Barry W2UP -- View this message in context: http://elecraft.365791.n2.nabble.com/Elecraft-Hats-at-Dayton-tp7573660p75737 33.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html - No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.2904 / Virus Database: 3162/6330 - Release Date: 05/16/13 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Combo pre-amp
Yes I'm waiting also if not the combo then at the very least a 10m one, 6m preamps are not that hard to find but I would buy the combos for both of my K3's. 73, Fred/N0AZZ K3 Ser #'s 6730/5299--KX3 # 2573--K2/100--KAT100 P3/SVGA--KPA500--KAT500--W2 -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Tom H Childers Sent: Friday, May 17, 2013 10:52 PM To: Jack Berry Cc: 'Elecraft Mailing List' Subject: Re: [Elecraft] Combo pre-amp If you find one of those ore amps, let me know where I can get one. I have some gold I'd like to amplify. ;o) 73, Tom Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member On Fri, 17 May 2013 16:42:01 -0400, Jack Berry we...@yahoo.com wrote: Has there been any information of Elecraft producing a 6+10 meter ore-amp? Seems I read a hint in this months ago. 73, Jack __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html 73, Tom Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html - No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.2904 / Virus Database: 3162/6330 - Release Date: 05/16/13 - No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.2904 / Virus Database: 3162/6330 - Release Date: 05/16/13 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] discounts?
New products have conflicting development objectives of quality, timely delivery, and cost. You can specify a deadline, but you then must be willing to sacrifice quality and spend money to meet the deadline. You can have a fixed budget, but then quality and development time must be flexible. A fixed development budget is only practical for enhancing an existing product for which costs are known. You can have quality objectives, but then you must be willing to take the time and spend the money to achieve them. Almost always that means delays in delivery. For me, I’ll wait for the quality. Monty K2DLJ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Elecraft Hats at Dayton?
I can't believe u guys are bugging Wayne for hats. Do u have any clue what is involved in preparing and managing a trade show? Give it a rest and wait until he gets back to the office. Note to Wayne: Extending your brand through promotional items makes good sense financially and from a marketing point of view. You should consider having a page on your site for hats, shirts, mugs etc. GL at the show Steve W1SFR Sent from my iPad On May 18, 2013, at 3:17 AM, Fred Smith m...@mo-net.com wrote: Wayne could I pre-order 3 left over hats from Dayton when you get back? If so I would even prepay for them.NOW 73, Fred/N0AZZ K3 Ser #'s 6730/5299--KX3 # 2573--K2/100--KAT100 P3/SVGA--KPA500--KAT500--W2 -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Barry Sent: Friday, May 17, 2013 1:43 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Elecraft Hats at Dayton? I thought you would be GIVING them away in Dayton, not SELLING them :.( Barry W2UP -- View this message in context: http://elecraft.365791.n2.nabble.com/Elecraft-Hats-at-Dayton-tp7573660p75737 33.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html - No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.2904 / Virus Database: 3162/6330 - Release Date: 05/16/13 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Followup - iOS controlling K2 via RS-232
Followup on the iPhone as a wired remote control for K2: Thanks to the redpark.com cable, it's working - got a prototype iPhone app doing reads/writes directly with no need for Wi-Fi, Bluetooth or other devices inbetween (well there is an embedded controller inside the cable, but the cable still just looks like a cable). Since the K2's AUX I/O pinout isn't the same as the RS-232 standard (NEVER attach a 'full' RS-232 cable directly to the K2!) a second cable is needed between the K2 and the redpark cable. In my case I simply wired pin 2 to 2, pin 3 to 3, pin 5 to 5 (signal ground). Also, on the K2 end only, attached the bare wire to pin 1 (chassis ground), and on the end that mates to the redpark cable, wired pin 7 to 8 (RTS/CTS loopback, see p. 13 of Elecraft KIO2 manual, Rev. C). I'm using redpark's C2-DB9V. 73, --Andrew, NV1B .. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Ideal RTTY filter.
Ed et al, As I said in my posting the receive filter info came from a quote attributed to Chen in the QST article. I pointed out that the link supplied by QST was not for receive. So we either have to accept the quote of Chen on the receive side (additional data exists that Chen has?) or the QST author got it wrong. Nothing at all was said about dual peak filtering which is used by many of us in conjunction with a 400 or 250 filter. It would be nice to someday finally nail this whole RTTY filter issue down. Also it would be nice to find a set of optimum AGC settings for RTTY. I suspect there are parameters or a formulation that would produce less spurious clicks. AGC off is definitely not a practical solution. 73 de Brian/K3KO On 5/18/2013 04:17, Ed Muns wrote: Brian K3KO wrote: This comes from June 2013 QST page 59. First of all, Chen's article is about transmit filtering which is not directly translatable to optimal receive filtering. Second, the cascade effect of the K3 crystal filter and DSP filter must be considered in determining the net receive bandwidth. So very different net receiver bandwidths result depending on what DSP bandwidth is used with the engaged crystal filter bandwidth, e.g., KFLA250 which is really a 370 Hz filter. Third, the ideal receive bandwidth for optimal decoding is not the same as the transmit bandwidth for minimum QRM. Depending on the decoder, a receiver bandwidth of around 400 Hz is optimum ... unless there is such a heavy QRM situation that a better overall system trade-off is obtained with narrower, e.g., 250 Hz, net IF bandwidth. A transmit filter of 280 Hz is an optimum trade-off between minimizing QRM to neighboring QSOs and maintaining signal integrity for the intended receiver. Finally, this transmit filter can be implemented in either the radio or the encoder. MMTTY, for example, provides a number of transmit filter bandwidths and the default 48-tap TX bandwidth for AFSK meets Chen's proposal. Ed W0YK According to W7AY: The ideal RTTY filter is 280 Hz wide. Narrowing it further by 60 Hz doubles the error rate. The article references: http://www.w7ay.net/site/Technical/RTTY%20Transmit%20Filters/index.html Which doesn't come out and say the above! It's talking about transmit filters. W7AY doesn't like uneven power in transmit tones either. Anyhow this may confirm what has been said on this reflector. The 350 Hz (AKA 250 Hz) filter is probably the narrowest practical choice for RTTY. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2242 / Virus Database: 3162/5835 - Release Date: 05/18/13 - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2242 / Virus Database: 3162/5835 - Release Date: 05/18/13 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] OT: Elevated vs. Buried Radials
A lot of talk has been going on about radials on the KX3 Yahoogroups Reflector, but there is so much FOD on that reflector, I usually delete most of the messages. Although it may have been mentioned there, I have probably missed it. Other than for portability, why are elevated radials so important? I have a ground-mounted 6BTV (not my main antenna) in my backyard. I have four radials for each band and they were all put in with yard staples. I did this in the Fall after the last grass cutting. By Spring, the grass had grown over them. Now, several years later, there is at least one inch of dirt over them. In all honesty, it's only a backup antenna and probably needs some radials replaced. Now, in my situation, there was no way I was going to use elevated radials. Someone recently posted a link to the SteppIR vertical - the CrankIR. Looking at the one page from the link, it only mentions elevated radials. Now, I've never seen a loaded-tower broadcast antenna with elevated radials either. Is the only benefit portability? Please, I do not want to also be accused of perpetuating FOD on another reflector. I'd prefer you reply directly to me. If needed, I'll summarize and repost. Thanks, Joel - W4JBB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Ideal RTTY filter.
Back in ye olde days of RTTY when we used mechanical printers, the thinking was that the minimum bandwidth required was that sufficient to pass the 3rd keying sideband without too much attenuation or time shift. (This was way before measuring group delay was something that could be done other than in a well equipped lab, but if you looked at the output of the modem detector after the low pass filter and before the slicer, an oscilloscope clearly showed the changes resulting from changing the tone filter and low pass filter bandwidths. 60 WPM Baudot RTTY has a data rate of 22 Hz*, so the 3rd keying sidebands would be ±66 Hz from the tone. With 170 Hz shift, and a single passband filter, the outer (upper and lower) keying sidebands would be at 66 Hz above and below. Hence the target filter bandwidth would be 302 Hz. A more technical explanation is that the tone filters, post-detection low pass filter and slicer work to restore the transmitted waveform and that waveform reconstruction becomes more difficult and less accurate the more keying sidebands are removed. A Fourier analysis of a square wave will show this as you increase the number of terms (harmonics of the keying waveform) in the reconstruction. If you want to tinker a bit, there's an on-line Fourier simulator at http://www.facstaff.bucknell.edu/mastascu/elessonsHTML/Freq/Freq4FourierSeriesSimulators.htm -- select the square wave and run it with 1, 3, 5, 7 etc. harmonics and you will see that passing just the 3rd harmonic yields a not that bad appearing square wave. Where things get a bit more complicated is that these simple rules and the Fourier simulator assume the harmonics are passed without significant time (or phase if you prefer to think of it that way) shift. Depending on the tone filter design, there may well be significant time shift between the tone frequency and the keying sidebands. A filter with uniform time delay, such as a Bessel will be much better in this regard than the same order Chebyshev, for example, but for the same filter order and -3 dB bandwidth, the Bessel will demonstrate much wider skirts. At least in the days when we built filters from 88mH loading coils, there was always tension between designing a filter with a picture perfect square sided response but with gross time distortion and one with a rounded nose and gentle flank selectivity and low time distortion. A Butterworth filter was used in most modem designs of that era as a compromise between time distortion and flank response and also the ability to design and implement the filter. DSP based filters are a huge improvement over those LC filters and permit good time delay performance and skirt selectivity. Jack K8ZOA ... my first piece of RTTY gear was a model 15 page printer acquired surplus in the late 1960's from Michigan Bell Telephone through their ham radio - RTTY program. * 60 WPM Baudo = 368 operations per minute, 7.42 length code = 45.5 baud, or 22.7 Hz. On 5/18/2013 8:18 AM, Brian Alsop wrote: Ed et al, As I said in my posting the receive filter info came from a quote attributed to Chen in the QST article. I pointed out that the link supplied by QST was not for receive. So we either have to accept the quote of Chen on the receive side (additional data exists that Chen has?) or the QST author got it wrong. Nothing at all was said about dual peak filtering which is used by many of us in conjunction with a 400 or 250 filter. It would be nice to someday finally nail this whole RTTY filter issue down. Also it would be nice to find a set of optimum AGC settings for RTTY. I suspect there are parameters or a formulation that would produce less spurious clicks. AGC off is definitely not a practical solution. 73 de Brian/K3KO On 5/18/2013 04:17, Ed Muns wrote: Brian K3KO wrote: This comes from June 2013 QST page 59. First of all, Chen's article is about transmit filtering which is not directly translatable to optimal receive filtering. Second, the cascade effect of the K3 crystal filter and DSP filter must be considered in determining the net receive bandwidth. So very different net receiver bandwidths result depending on what DSP bandwidth is used with the engaged crystal filter bandwidth, e.g., KFLA250 which is really a 370 Hz filter. Third, the ideal receive bandwidth for optimal decoding is not the same as the transmit bandwidth for minimum QRM. Depending on the decoder, a receiver bandwidth of around 400 Hz is optimum ... unless there is such a heavy QRM situation that a better overall system trade-off is obtained with narrower, e.g., 250 Hz, net IF bandwidth. A transmit filter of 280 Hz is an optimum trade-off between minimizing QRM to neighboring QSOs and maintaining signal integrity for the intended receiver. Finally, this transmit filter can be implemented in either the radio or the encoder. MMTTY, for example, provides a number of transmit filter bandwidths
Re: [Elecraft] OT: Elevated vs. Buried Radials
The cleanest installation is to put the radials in the ground - but, not portable at all. The idea is a capacitance connection with the earth. I have used welded steel cattle fence in the past - I build a mat that is about 30 or 40 feet out from the base of the antenna. For raised radials - they must be resonate to function properly. Three or four per band or related band. They have to be high enough that they present no danger to anyone roaming around your antenna field. They can be drooping or horizontal - both work well. Personally, I do wonder about the new fangled no radials required antennas. But, I have an old R5 and it works well. Perhaps the way to go is a new antenna that just gets bolted to a post and a feedline attached. Sure makes life easier and from folks I talk to all the time - they do work. Forget that they are a little expensive. You buy an antenna to use for years. Read the eHam reviews and see what other users are saying before you buy anything. Ask on the air. The best I ever had was a Butternut of some kind over a bunch of buried fence. Might still be the way to go. But, if I was doing it now, I'd be looking at a no radials required antenna. My reasoning is somewhat age related. Be looking forward to the sage advice that will come from this post. It is summer - so it is antenna time. Bill W2BLC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Ideal RTTY filter.
So we either have to accept the quote of Chen on the receive side (additional data exists that Chen has?) or the QST author got it wrong. Chen has written extensively on RTTY filtering both on his web site as well as in his postings on the RTTY list. In addition, Chen has provided links to work by others (Hoff, Nyquist, etc.) in the field - one can't take a single link in QST as the sum total of Chen's work. It would be nice to someday finally nail this whole RTTY filter issue down. Read *all* of Chen's work and check out some of the bibliographical information as well. The information will make the concepts quite clear (although the mathematics is a whole different matter). One does need to understand that filtering in the receiver and filtering in the demodulator are two *entirely different issues* although they must be considered together along with transmit filtering - because all three filters are connected in series and any group delays (filter induced multipath) additive. Also it would be nice to find a set of optimum AGC settings for RTTY. I suspect there are parameters or a formulation that would produce less spurious clicks. Key clicks in RTTY are a result of improper FSK (or AFSK) generation and the lack of appropriate transmit filtering/waveshaping as described in Chen's link on transmit filters. AGC has no effect on them. 73, ... Joe, W4TV On 5/18/2013 8:18 AM, Brian Alsop wrote: Ed et al, As I said in my posting the receive filter info came from a quote attributed to Chen in the QST article. I pointed out that the link supplied by QST was not for receive. So we either have to accept the quote of Chen on the receive side (additional data exists that Chen has?) or the QST author got it wrong. Nothing at all was said about dual peak filtering which is used by many of us in conjunction with a 400 or 250 filter. It would be nice to someday finally nail this whole RTTY filter issue down. Also it would be nice to find a set of optimum AGC settings for RTTY. I suspect there are parameters or a formulation that would produce less spurious clicks. AGC off is definitely not a practical solution. 73 de Brian/K3KO On 5/18/2013 04:17, Ed Muns wrote: Brian K3KO wrote: This comes from June 2013 QST page 59. First of all, Chen's article is about transmit filtering which is not directly translatable to optimal receive filtering. Second, the cascade effect of the K3 crystal filter and DSP filter must be considered in determining the net receive bandwidth. So very different net receiver bandwidths result depending on what DSP bandwidth is used with the engaged crystal filter bandwidth, e.g., KFLA250 which is really a 370 Hz filter. Third, the ideal receive bandwidth for optimal decoding is not the same as the transmit bandwidth for minimum QRM. Depending on the decoder, a receiver bandwidth of around 400 Hz is optimum ... unless there is such a heavy QRM situation that a better overall system trade-off is obtained with narrower, e.g., 250 Hz, net IF bandwidth. A transmit filter of 280 Hz is an optimum trade-off between minimizing QRM to neighboring QSOs and maintaining signal integrity for the intended receiver. Finally, this transmit filter can be implemented in either the radio or the encoder. MMTTY, for example, provides a number of transmit filter bandwidths and the default 48-tap TX bandwidth for AFSK meets Chen's proposal. Ed W0YK According to W7AY: The ideal RTTY filter is 280 Hz wide. Narrowing it further by 60 Hz doubles the error rate. The article references: http://www.w7ay.net/site/Technical/RTTY%20Transmit%20Filters/index.html Which doesn't come out and say the above! It's talking about transmit filters. W7AY doesn't like uneven power in transmit tones either. Anyhow this may confirm what has been said on this reflector. The 350 Hz (AKA 250 Hz) filter is probably the narrowest practical choice for RTTY. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2242 / Virus Database: 3162/5835 - Release Date: 05/18/13 - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2242 / Virus Database: 3162/5835 - Release Date: 05/18/13 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home:
Re: [Elecraft] OT: Elevated vs. Buried Radials
Personally, I do wonder about the new fangled no radials required antennas. But, I have an old R5 and it works well. The no radials antennas are basically a vertical OCF - the short decoupling radials are the short leg and the vertical is adjusted through the use of traps, stubs and/or loading to resonate on the desired band with the fixed length (typically 42) of the short radials. 73, ... Joe, W4TV On 5/18/2013 9:25 AM, Bill wrote: The cleanest installation is to put the radials in the ground - but, not portable at all. The idea is a capacitance connection with the earth. I have used welded steel cattle fence in the past - I build a mat that is about 30 or 40 feet out from the base of the antenna. For raised radials - they must be resonate to function properly. Three or four per band or related band. They have to be high enough that they present no danger to anyone roaming around your antenna field. They can be drooping or horizontal - both work well. Personally, I do wonder about the new fangled no radials required antennas. But, I have an old R5 and it works well. Perhaps the way to go is a new antenna that just gets bolted to a post and a feedline attached. Sure makes life easier and from folks I talk to all the time - they do work. Forget that they are a little expensive. You buy an antenna to use for years. Read the eHam reviews and see what other users are saying before you buy anything. Ask on the air. The best I ever had was a Butternut of some kind over a bunch of buried fence. Might still be the way to go. But, if I was doing it now, I'd be looking at a no radials required antenna. My reasoning is somewhat age related. Be looking forward to the sage advice that will come from this post. It is summer - so it is antenna time. Bill W2BLC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: Elevated vs. Buried Radials
Hi Joel, You've asked why are elevated radials so important. If a vertical is elevated above ground (perhaps on a post or on a roof) elevated radials are a necessity because in order to use ground mounted radials you would have to run a long length of wire down to the ground mounted radial field. In doing this that wire becomes part of your antenna with an effect on resonant frequency and radiation pattern. For ground mounted verticals, elevated radials might be desired if the installation is temporary/portable or if laying ground radials is too difficult. The CrankIR is being marketed as a portable antenna so elevated radials are the logical choice. I'm sure once the antenna becomes available we'll read about folks ground mounting the antenna and laying traditional radial fields. And why not. I can see HOA restricted hams laying an invisible radial field in the grass and bringing out the CrankIR for a few hours use while the HOA police are napping. 73, Mike K2MK W4JBB wrote A lot of talk has been going on about radials on the KX3 Yahoogroups Reflector, but there is so much FOD on that reflector, I usually delete most of the messages. Although it may have been mentioned there, I have probably missed it. Other than for portability, why are elevated radials so important? I have a ground-mounted 6BTV (not my main antenna) in my backyard. I have four radials for each band and they were all put in with yard staples. I did this in the Fall after the last grass cutting. By Spring, the grass had grown over them. Now, several years later, there is at least one inch of dirt over them. In all honesty, it's only a backup antenna and probably needs some radials replaced. Now, in my situation, there was no way I was going to use elevated radials. Someone recently posted a link to the SteppIR vertical - the CrankIR. Looking at the one page from the link, it only mentions elevated radials. Now, I've never seen a loaded-tower broadcast antenna with elevated radials either. Is the only benefit portability? Please, I do not want to also be accused of perpetuating FOD on another reflector. I'd prefer you reply directly to me. If needed, I'll summarize and repost. Thanks, Joel - W4JBB -- View this message in context: http://elecraft.365791.n2.nabble.com/OT-Elevated-vs-Buried-Radials-tp7573769p7573774.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 Problem in Assembly, need advice
I am assembling K3 s/n 7394. I have come to the step on page 45, DMM resistance measurements. The resistance between a terminal on U12 and ground measures 445 ohms. It is supposed to be 500 ohms. I am using an accurate Fluke DMM. What am I looking for? 73 de Brian W3BW *Brian F. Wruble, C.F.A. *70 is the new 40.* * Mail: 1107 Key Plaza, PMB 447 Key West, FL 33040-4077 Summers: P.O.Box 57, 7400 Augustine Herman Highway, Georgetown, MD 21930 eFax 305.768.0278 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: Elevated vs. Buried Radials
Hi Joel, The ground beneath the antenna can have two effects: 1. It can become a part of the antenna's equivalent electrical circuit. 2. It has an effect on the antenna's far field due to reflection of the antenna's field By burying the radials and mounting the antenna on the ground, you increase the losses of the antenna itself, but improve the reflection coefficient of the ground, because most of the field is reflected very close to the antenna (where conductivity is high because of the radials). By increasing the antenna's feedpoint height, you start to decouple the ground from the antenna's equivalent circuit (the capacity between the radiator and the ground decreases) but at the same time, the reflection point is further away from the antenna, so the field sees a ground with lower conductivity. This reduces the far field at low elevation angles due to a nearly 180 deg phase shift (related to pseudo-Brewster angle), if the antenna is low in terms of the wavelength. So, the best verticals are ground-mounted (if you have something like 15 radials at least and there are no large structures around the antenna) but antennas up about 1 wavelength are also very good if ground conductivity is rather low, because at low angles, the fields experience about the same 180deg phase shift that horizontal antennas see. If the antenna is high enough, the incident and reflected fields add up by almost 6dB at low angles. In ON4UN's book low band dxing, he refers to some measurements performed by W8IJ and what he found was that low antennas with few elevated radials are inferior to antennas with (many) buried radials and that the difference was higher than could be expected from NEC modelling. I think he gave the recommendation to put up the feedpoint at least 1/8 lambda above the ground. In these no radial verticals, the feedline becomes the counterpart of the antenna, however, the current can be low, so that this is not necessarily a problem (depending on the feedline length), but basically you need a counterpoise because your trx does nothing more than periodically moving charges from one point in space to another. If there is no counterpoise, it has to take and move the charges on the feed line's shield (maybe by capacitive coupling) , the trx housing or the ac-mains (it only moves charges, but doesn't create or destroy them, so charge conservation applies). So, there is a counterpoise, even if you don't see it, there has to be one if the feed point current is not equal zero (which would mean tx off or infinite impedance). I don't remember for the R5, but I think the R7 had very short radials. In these antennas, the short radials are part of the antenna, radials + radiator together form a resonant structure (like in the off-center-fed dipole antenna), so they are not truly end-fed, and require some broadband impedance transform plus a current choke because of the imbalance of the load (that is what is in the box at the feed point). If you provide a current choke, you may have shorter radials plus longer radiator, both together have to be lambda/half (electrically, taking all traps into account), however the feedpoint resistance is higher than 50 Ohms and some matching is required. Vy 73 Ralf, DL6OAP Am 18.05.2013 um 14:37 schrieb Joel Black w4...@charter.net: A lot of talk has been going on about radials on the KX3 Yahoogroups Reflector, but there is so much FOD on that reflector, I usually delete most of the messages. Although it may have been mentioned there, I have probably missed it. Other than for portability, why are elevated radials so important? I have a ground-mounted 6BTV (not my main antenna) in my backyard. I have four radials for each band and they were all put in with yard staples. I did this in the Fall after the last grass cutting. By Spring, the grass had grown over them. Now, several years later, there is at least one inch of dirt over them. In all honesty, it's only a backup antenna and probably needs some radials replaced. Now, in my situation, there was no way I was going to use elevated radials. Someone recently posted a link to the SteppIR vertical - the CrankIR. Looking at the one page from the link, it only mentions elevated radials. Now, I've never seen a loaded-tower broadcast antenna with elevated radials either. Is the only benefit portability? Please, I do not want to also be accused of perpetuating FOD on another reflector. I'd prefer you reply directly to me. If needed, I'll summarize and repost. Thanks, Joel - W4JBB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] discounts?
One of the project managers at Hewlett Packard used to have a sign on his wall: Quality, speed, cost. Pick any two. Alan N1AL On 5/18/2013 3:41 AM, MontyS wrote: New products have conflicting development objectives of quality, timely delivery, and cost. You can specify a deadline, but you then must be willing to sacrificequality and spend money to meet the deadline. You can have a fixed budget, but then quality and development time must be flexible. A fixed development budget is only practical for enhancing an existing product for which costs are known. You can have quality objectives, but then you must be willing to take the time and spend the money to achieve them. Almost always that means delays in delivery. For me, I’ll wait for the quality. Monty K2DLJ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] discounts?
On 5/18/2013 8:47 AM, Alan Bloom wrote: One of the project managers at Hewlett Packard used to have a sign on his wall: Quality, speed, cost. Pick any two. I once told an Air Force Logistics Command general, Good, Fast, Cheap. Pick 2 Sir. He ultimately printed and framed it for his wall. 73, Fred K6DGW - Northern California Contest Club - CU in the 2013 Cal QSO Party 5-6 Oct 2013 - www.cqp.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] discounts?
You've obviously not read Goldratt's The Goal, or the new The Phoenix Project that references the former heavily. http://itrevolution.com/books/phoenix-project-devops-book/ I will agree on waiting for the quality, superior product, though. :^) Jeff KC9WSJ On 5/18/2013 5:41 AM, MontyS wrote: New products have conflicting development objectives of quality, timely delivery, and cost. You can specify a deadline, but you then must be willing to sacrifice quality and spend money to meet the deadline. You can have a fixed budget, but then quality and development time must be flexible. A fixed development budget is only practical for enhancing an existing product for which costs are known. You can have quality objectives, but then you must be willing to take the time and spend the money to achieve them. Almost always that means delays in delivery. For me, I’ll wait for the quality. Monty K2DLJ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Business advice
Gentlemen, I kind of get the feeling that because elecraft is such an open, easy to talk to company, some of us may take a little bit advantage of their openness. these guys have done what very few companies in recent times have been able to do, and the results speak for themselves. AND they did it themselves! nothing from you know who! I would never suggest to someone this successful how to run their business. they've demonstrated to all of us that Elecraft is a world class company. so let's ease up on asking for freebees. I've seen them bend over backwards with customer support, and always look for advice on new products and updates. I would be the last person to suggest to them what kind of promotions they should run. When I had a Y and I radio, getting anyone to even respond to an email was challenging. BTW, I'm still running my K3, S/N 1997, which I think is ~ 7 years old, and have NEVER had an issue with it except occasionally I make misteaks. and the Elecraft community is always there to straighten me out. 73 KB6G -- Ron Midwin __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Dayton Discounts - End of Story!
Okay I published a rant when maybe I should have thought it through a little bit beforehand. It seems there are a lot of very strong Elecraft supporters as well as a lot of frugal hams. I admire a company who gets the customer service thing right and it's obvious from many of your comments Elecraft has done just that. Since my rant I've have a chance to find that out for myself. Friday afternoon I called to place my order with Howard their customer support go to guy. He's the perfect customer support person. He didn't rush me, answered my questions and made feel like I was the most important person he had talked to all day. That's the sign of a quality company and as some of you pointed out that's worth a lot more than a Dayton Discount. As one of my K3 owner friends put it, I probably spend more on Brats and Beer when we go to Dayton then I would have saved. The following is from this week's engineering and design newsletter about cheap hams. (great timing) There is a short commercial at the beginning. http://www.edn.com/electronics-blogs/a-ham-s-eye-view/4414288/Hams-and-flea -markets http://www.edn.com/electronics-blogs/a-ham-s-eye-view/4414288/Hams-and-flea- markets Thanks to all of you for your eye and mind opening comments. 73 - Pete - K7WTG __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K144XV
Today I installed the module K144XV. It all works ok but I noticed several spurious signals received, in particular each 12.5 kHz at a level of around -140 dbm indicated on P3, plus some pretty strong signals such as at 144.4165 to S7 and others. Obviously signals are present with the antenna disconnected and with a 50 Ohm load on the antenna connector. I exclude the origin from the outside of the transceiver, I disconnected all possible noise sources such as switching power supplies and similar. It 's normal or there may be a problem? Any suggestions? Fausto IK4NMF __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 FSK/D vs MMTTY
I am trying to decide if I should invest in an SVGA card for my P3. I know about all the nice features that the SVGA card will give me, but I have been told by a top contester that the K3 decoder is not as good as MMTTY. I like on occasion to do FSK/D, and have been using the built in function of the K3 with fair success. With my old, displaced Pro 3, I used MMTTY/EXTFSK and a Green Heron Radio Boss with very good results. I still have the Radio Boss, and see that it would be easy to implement with my K3. So, the only question I have is does anyone have an unbiased opinion on which offers better results in the decode of FSK/D? Certainly, I can do the Radio Boss option for less than $50, since I have the unit. The SVGA would run me around $300 (I would need another monitor). I am not a heavy user of RTTY or PSK, but on occasion use those modes. I am leaning to the less expensive Radio Boss option, or just continue with the K3/terminal program readout. So, again which is a better RTTY decoder: MMTTY or the built in K3 decoder? Or, are the pretty much the same? Thanks 73 Jim Bob Buckeye AKA Jim Leder K8CXM since 1961 IBM retiree since 1999 There are 10 types of people in this world -- those who understand binary and those who don't. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 FSK/D vs MMTTY
On Sat, May 18, 2013 at 9:53 AM, Jim Leder (Hotmail) k8...@hotmail.com wrote: I am trying to decide if I should invest in an SVGA card for my P3. I know about all the nice features that the SVGA card will give me, but I have been told by a top contester that the K3 decoder is not as good as MMTTY. I like on occasion to do FSK/D, and have been using the built in function of the K3 with fair success. With my old, displaced Pro 3, I used MMTTY/EXTFSK and a Green Heron Radio Boss with very good results. I still have the Radio Boss, and see that it would be easy to implement with my K3. So, the only question I have is does anyone have an unbiased opinion on which offers better results in the decode of FSK/D? Certainly, I can do the Radio Boss option for less than $50, since I have the unit. The SVGA would run me around $300 (I would need another monitor). I am not a heavy user of RTTY or PSK, but on occasion use those modes. I am leaning to the less expensive Radio Boss option, or just continue with the K3/terminal program readout. So, again which is a better RTTY decoder: MMTTY or the built in K3 decoder? Or, are the pretty much the same? Why don't you try it and see for yourself? All you need is a standard 3.5mm TRS audio cable to go from the K3's line out to the computer sound card's line in (or that radio boss thing, perhaps). You can run both decoders in parallel and see which one does better. 73, ~iain / N6ML __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 Assembly Resistance Check is low
My K3 fails the test on page 45 of the assembly manual. The resistance from a pin on U12 to ground is 447 ohms. One of you asked a question ... was the reading the same with the leads reversed? The answer is no, that reading is about 4.5 kohms, and it acts like the meter is charging a capacitor in that direction. It takes a long time for the meter reading to settle down. I put a fresh battery in the Fluke DMM, and I also tested a batch of 5% tolerance 1/4 watt carbon resistors I had. They all read a little low, none read high, but none were low outside the 5% tolerance. So, my reading of U12 to ground is 10% low. The manual is pretty clear that the resistance must be 500 ohms. What is my next step? Thanks. Brian W3BW *Brian F. Wruble, C.F.A. *70 is the new 40.* * Mail: 1107 Key Plaza, PMB 447 Key West, FL 33040-4077 Summers: P.O.Box 57, 7400 Augustine Herman Highway, Georgetown, MD 21930 eFax 305.768.0278 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 FSK/D vs MMTTY
But, I do not have a P3 SVGA card. I know how well MMTTY/EXTFSK works. I've used it. The question is: is the native K3 FSK/D decoder as good or better than MMTTY? Before I charge off and drop $300 on the SVGA card and monitor, to use mainly for RTTY, is it worth it? I am content with the P3, and don't really need a large monitor showing me the same thing. Short on table space anyway. Has anyone out there with both, used/compared them? Jim Bob Buckeye AKA Jim Leder K8CXM since 1961 IBM retiree since 1999 There are 10 types of people in this world -- those who understand binary and those who don't. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K144XV
That sounds like a P3 cable problem. There have been reports of faulty BNC cables supplied in a batch that was bad from the supplier. Try contacting Elecraft and describe the problem to them. Also while you are waiting to call Elecraft over the week-end, make sure that ALL of the cable routing is as it was before the installation. That covers any existing cables you may have moved around. Good luck, 73, Tom Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member On Sat, 18 May 2013 18:41:53 +0200, Fausto Coletti faustocole...@alice.it wrote: Today I installed the module K144XV. It all works ok but I noticed several spurious signals received, in particular each 12.5 kHz at a level of around -140 dbm indicated on P3, plus some pretty strong signals such as at 144.4165 to S7 and others. Obviously signals are present with the antenna disconnected and with a 50 Ohm load on the antenna connector. I exclude the origin from the outside of the transceiver, I disconnected all possible noise sources such as switching power supplies and similar. It 's normal or there may be a problem? Any suggestions? Fausto IK4NMF __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html 73, Tom Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Combo pre-amp
Spoke with Eric earlier today. The 6/10 meter per-amp is under way. He hopes to have them available in two to three months. I don't have pricing info. On Fri, 17 May 2013 16:42:01 -0400, Jack Berry we...@yahoo.com wrote: Has there been any information of Elecraft producing a 6+10 meter ore-amp? Seems I read a hint in this months ago. 73, Jack __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html 73, Tom Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: Elevated vs. Buried Radials
Joel, Very simply put. When you have elevated radials, 0.1 wavelength, your system uses the radials as intended. However, with radials on the ground, your system will see the vector summation of the radials and the ground. What that means is your ground losses will be greater with ground based radials. And you are going to miss out on gain at the much lower angles. I hope this helps. 73, Barry K3NDM - Original Message - From: Joel Black w4...@charter.net To: elecraft elecraft@mailman.qth.net Sent: Saturday, May 18, 2013 8:37:15 AM Subject: [Elecraft] OT: Elevated vs. Buried Radials A lot of talk has been going on about radials on the KX3 Yahoogroups Reflector, but there is so much FOD on that reflector, I usually delete most of the messages. Although it may have been mentioned there, I have probably missed it. Other than for portability, why are elevated radials so important? I have a ground-mounted 6BTV (not my main antenna) in my backyard. I have four radials for each band and they were all put in with yard staples. I did this in the Fall after the last grass cutting. By Spring, the grass had grown over them. Now, several years later, there is at least one inch of dirt over them. In all honesty, it's only a backup antenna and probably needs some radials replaced. Now, in my situation, there was no way I was going to use elevated radials. Someone recently posted a link to the SteppIR vertical - the CrankIR. Looking at the one page from the link, it only mentions elevated radials. Now, I've never seen a loaded-tower broadcast antenna with elevated radials either. Is the only benefit portability? Please, I do not want to also be accused of perpetuating FOD on another reflector. I'd prefer you reply directly to me. If needed, I'll summarize and repost. Thanks, Joel - W4JBB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: Elevated vs. Buried Radials
Hi Joel: This is a very good summary that clearly shows the difference between elevated and in-ground radials. (See Figure 1 on the second page) http://www.steppir.com/wp-content/uploads/2011/10/radial-systems-for-vertica l-antennas.pdf Bottom line, if you can install a LOT of in-ground radials (the A.M. broadcast stations use about 100), the efficiency of the antenna will be high. If you can install resonant elevated radials, a much small number will produce even higher efficiencies. In ground radials do not need to be very long. About 0.2 wavelengths seems to be as good as a much longer radial. Above ground resonant (1/4 wave long) radials take up a lot more room. Some A.M. Broadcast stations in the USA have used elevated radials with great results. At least one was described in an A.R.R.L. antenna compendium a few years ago. However, their antenna configurations are controlled by the F.C.C. so they must go through approvals for the design. And resonant elevated radials at those frequencies are rather long! 73, Ron AC7AC P.S. The only FOD I know about is Foreign Object Damage - the nemeses of jet engines. Haven't a clue how that applies here, Hi! -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joel Black Sent: Saturday, May 18, 2013 5:37 AM To: elecraft Subject: [Elecraft] OT: Elevated vs. Buried Radials A lot of talk has been going on about radials on the KX3 Yahoogroups Reflector, but there is so much FOD on that reflector, I usually delete most of the messages. Although it may have been mentioned there, I have probably missed it. Other than for portability, why are elevated radials so important? I have a ground-mounted 6BTV (not my main antenna) in my backyard. I have four radials for each band and they were all put in with yard staples. I did this in the Fall after the last grass cutting. By Spring, the grass had grown over them. Now, several years later, there is at least one inch of dirt over them. In all honesty, it's only a backup antenna and probably needs some radials replaced. Now, in my situation, there was no way I was going to use elevated radials. Someone recently posted a link to the SteppIR vertical - the CrankIR. Looking at the one page from the link, it only mentions elevated radials. Now, I've never seen a loaded-tower broadcast antenna with elevated radials either. Is the only benefit portability? Please, I do not want to also be accused of perpetuating FOD on another reflector. I'd prefer you reply directly to me. If needed, I'll summarize and repost. Thanks, Joel - W4JBB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Fwd: OT: Elevated vs. Buried Radials
72/73/Scotty/NUØS Original Message Subject: Re: [Elecraft] OT: Elevated vs. Buried Radials From: Scotty Long n...@hotmail.com To: Joel Black w4...@charter.net CC: Hey Joel I use a Hustler BTV4 as my main antenna as well as an inverted L for 80m and the WARC bands. The Hustler is ground mounted with 60 buried ground radials 1500 feet total. They are all 25 feet long ground coupled so resonant length didn't matter. I have set many of these up for other hams they work very well. Mine is resonant on all four bands no turner needed...Great antennas... 72/73/Scotty/NUØS Joel Black w4...@charter.net wrote: A lot of talk has been going on about radials on the KX3 Yahoogroups Reflector, but there is so much FOD on that reflector, I usually delete most of the messages. Although it may have been mentioned there, I have probably missed it. Other than for portability, why are elevated radials so important? I have a ground-mounted 6BTV (not my main antenna) in my backyard. I have four radials for each band and they were all put in with yard staples. I did this in the Fall after the last grass cutting. By Spring, the grass had grown over them. Now, several years later, there is at least one inch of dirt over them. In all honesty, it's only a backup antenna and probably needs some radials replaced. Now, in my situation, there was no way I was going to use elevated radials. Someone recently posted a link to the SteppIR vertical - the CrankIR. Looking at the one page from the link, it only mentions elevated radials. Now, I've never seen a loaded-tower broadcast antenna with elevated radials either. Is the only benefit portability? Please, I do not want to also be accused of perpetuating FOD on another reflector. I'd prefer you reply directly to me. If needed, I'll summarize and repost. Thanks, Joel - W4JBB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 FSK/D vs MMTTY
Yes, that is the answer I was wondering about. I have had other K3 owners pretty much tell me the same thing, but thought to ask the group. As Iain suggested, I could compare both decoders without the SVGA card, and probably will (sorry, Iain, I misunderstood your reply). But, I am leaning towards using the external TTL box. FYI: http://www.greenheronengineering.com/RB_Overview.php? Link for info to the Radio Boss unit. Jim -- From: WM3M w...@live.com Sent: Saturday, May 18, 2013 1:11 PM To: Jim Leder (Hotmail) k8...@hotmail.com Subject: Re: [Elecraft] K3 FSK/D vs MMTTY Jim, I have the SVGA card in my P3 and I am very active in digital modes. My input is if you are buying the SVGA card just for digital modes like FSK/D etc then don’t buy it. Any software package like MMTTY is better than using the K3, P3/SVGA. I really like having the SVGA and the large display and I have tried using it for digital modes but always go back to computer and digital software. Its lot easier to use, better copy, decrypts, lots more features, etc. SVGA card is great for lots of other reasons though. 73 Hope this helps. Emory WM3M -Original Message- From: Jim Leder (Hotmail) Sent: Saturday, May 18, 2013 12:53 PM To: Elecraft Subject: [Elecraft] K3 FSK/D vs MMTTY I am trying to decide if I should invest in an SVGA card for my P3. I know about all the nice features that the SVGA card will give me, but I have been told by a top contester that the K3 decoder is not as good as MMTTY. I like on occasion to do FSK/D, and have been using the built in function of the K3 with fair success. With my old, displaced Pro 3, I used MMTTY/EXTFSK and a Green Heron Radio Boss with very good results. I still have the Radio Boss, and see that it would be easy to implement with my K3. So, the only question I have is does anyone have an unbiased opinion on which offers better results in the decode of FSK/D? Certainly, I can do the Radio Boss option for less than $50, since I have the unit. The SVGA would run me around $300 (I would need another monitor). I am not a heavy user of RTTY or PSK, but on occasion use those modes. I am leaning to the less expensive Radio Boss option, or just continue with the K3/terminal program readout. So, again which is a better RTTY decoder: MMTTY or the built in K3 decoder? Or, are the pretty much the same? Thanks 73 Jim Bob Buckeye AKA Jim Leder K8CXM since 1961 IBM retiree since 1999 There are 10 types of people in this world -- those who understand binary and those who don't. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 FSK/D vs MMTTY
On 5/18/2013 1:29 PM, Jim Leder (Hotmail) wrote:
But, I do not have a P3 SVGA card. I know how well MMTTY/EXTFSK
works. I've used it. The question is: is the native K3 FSK/D decoder
as good or better than MMTTY?
You *don't need* the P3SVGA to compare the decoder and MMTTY. The SVGA
uses the decoder built into the K3 - the SVGA is only a display device.
Simply turn on the RTTY decoding (DATA | AFSK A or FSK D - TEXT DEC)
set the baud rate and threshold for your best decoding - the text will
appear in the VFO B area of the K3 display. Yes, the display is
limited to a few characters but you will be able to tell how it decodes
compared to MMTTY (or other RTTY software).
Frankly, if you have a sound card, know how to connect it to a rig
without creating hum/RFI issues and can build a two transistor buffer
from a serial port (or your Radio Boss) for FSK/PTT from EXTFSK, I
think you're miles ahead of the built in decoder
73,
... Joe, W4TV
On 5/18/2013 1:29 PM, Jim Leder (Hotmail) wrote:
But, I do not have a P3 SVGA card. I know how well MMTTY/EXTFSK
works. I've used it. The question is: is the native K3 FSK/D decoder
as good orbetter than MMTTY?
Before I charge off and drop $300 on the SVGA card and monitor, to
use mainly for RTTY, is it worth it? I am content with the P3, and
don't really need a large monitor showing me the same thing. Short on
tablespace anyway.
Has anyone out there with both, used/compared them?
Jim Bob Buckeye
AKA
Jim Leder
K8CXM since 1961
IBM retiree since 1999
There are 10 types of people in this world -- those who understand binary
and those who don't.
__
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Re: [Elecraft] K3 Assembly Resistance Check is low
Brian, you are fine. The manual says The following resistance checks confirm that the main power busses in the K3 aren't shorted to ground. Orienting your leads one way shows a very high value of resistance, so there is definitely no short. You will encounter this situation a lot in building and troubleshooting. Your DMM applies a small voltage to the circuit when measuring resistance. Depending upon the circuit you are testing and your DMM, that voltage may cause some junctions in various components to start to turn on, causing the measured resistance to drop. So, when checking for shorts, if you see a marginal reading, reverse the leads and see what happens. If it meets specs that way, you are good to go. 73 Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Brian F. Wruble Sent: Saturday, May 18, 2013 10:26 AM To: Elecraft Reflector Subject: [Elecraft] K3 Assembly Resistance Check is low My K3 fails the test on page 45 of the assembly manual. The resistance from a pin on U12 to ground is 447 ohms. One of you asked a question ... was the reading the same with the leads reversed? The answer is no, that reading is about 4.5 kohms, and it acts like the meter is charging a capacitor in that direction. It takes a long time for the meter reading to settle down. I put a fresh battery in the Fluke DMM, and I also tested a batch of 5% tolerance 1/4 watt carbon resistors I had. They all read a little low, none read high, but none were low outside the 5% tolerance. So, my reading of U12 to ground is 10% low. The manual is pretty clear that the resistance must be 500 ohms. What is my next step? Thanks. Brian W3BW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: Elevated vs. Buried Radials
At 08:37 AM 5/18/2013, Joel Black wrote: Is the only benefit portability? Thanks, Joel - W4JBB Hi Joel As you mentioned ... physical, portable, and safety issues aside the difference between raised and buried radials is the difference in how they perform their function; that is how they effectively balance the antenna currents in the vertical radiating element and allow maximum radiation (usually vertically oriented). Example: imagine a 1/2 wave dipole horizontally oriented in free space above earth producing a horizontal oriented radiation pattern. Now bend the 1/2 wave 90 deg so one side is vertical while the other side remains horizontal and you now have a combination of horizontal and vertical radiation while the radiation efficiency remains the same. In order to eliminate the horizontal component install a second horizontal 1/4 wave element installed 180 deg opposite the first horizontal wire and the horizontal radiation component cancels leaving only the vertical component. This configuration is a vertical ground plane antenna and is quite efficient even though approximately half the radiated power is lost in the cancelled out horizontal portion. Now assume for whatever reason you want the feed point to be at ground level and you lower it more and more. As you do so the efficient 2 element ground plane (1/4 wave each) comes closer and closer to ground level and the resonant efficiency of the ground plane becomes lower and lower due to the interaction with the earth until the resonant length of the ground plane becomes irrelevant. Now in order to handle the RF current flow necessary to allow maximum current flow in the vertical radiating element a different method is required. you now actually need to allow current to flow from the ground System to the earth itself.Different radial properties are required and resonance is no longer required.. To a large degree RF current flow now depends on characteristics of the earth and the mass of the coupling material that you use to come in contact with it. This is true of all vertical antennas. Some tricks are employed to reduce this ground effect which is at maximum if the vertical element is 1/4 wave (low impedance feed point). For example if the element length is increased the feed point impedance is increased and the current flow required for a given power is reduced. There are any number of articles on how to do this. 73 Jim, VE3CI __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] {KX3} KE7X KX3 book e-format help
Hello all, There are a few people who would like an electronic format to put on their e-readers or whatever. I have generated an epub format but don't know how that will work with ipad or other readers (kindle, etc). I'd like a couple of kind folks who could test it out on their readers and let me know how it looks and what they did to get to read it. If you would like to try it, please drop me an email off the list and let me know what platform you have for testing. Thanks and 73, Fred KE7X PS: After the copying issue I had with the first edition K3 book, I'm a little reluctant to make a pdf version available. Fred Cady The Elecraft K3: Design, Configuration and Operation Second Edition The Elecraft KX3 - Going for the Summit (Currrent www.lulu 20% discount code: MAYBOOKS13) www.ke7x.com fcady at ieee dot org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 FSK/D vs MMTTY
Yes, I realize that I do not need the SVGA card to compare them. Wasn't thinking it through. I first looked at the W3YY board, but remembered I had the other unit somewhere around here, did a search and found it. With a DB15 Y (I also have the PR6) cable and a 15 pin shell, I can easily construct the necessary cable to connect the 'Radio Boss' to the K3. Thanks for the advice! Case closed, I'm going this way. 73 ... Jim Bob Buckeye AKA Jim Leder K8CXM since 1961 IBM retiree since 1999 There are 10 types of people in this world -- those who understand binary and those who don't. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Fwd: K3 Assembly Resistance Check is low
OK, I read the archives. The consensus seems to be that DMM's can have inaccurate measurements in this circuit. I powered up, and no smoke. Everything lights up like it is supposed to. Onward! Brian *Brian F. Wruble, C.F.A. *70 is the new 40.* * Mail: 1107 Key Plaza, PMB 447 Key West, FL 33040-4077 Summers: P.O.Box 57, 7400 Augustine Herman Highway, Georgetown, MD 21930 eFax 305.768.0278 -- Forwarded message -- From: Brian F. Wruble bwru...@gmail.com Date: Sat, May 18, 2013 at 1:25 PM Subject: K3 Assembly Resistance Check is low To: Elecraft Reflector elecraft@mailman.qth.net My K3 fails the test on page 45 of the assembly manual. The resistance from a pin on U12 to ground is 447 ohms. One of you asked a question ... was the reading the same with the leads reversed? The answer is no, that reading is about 4.5 kohms, and it acts like the meter is charging a capacitor in that direction. It takes a long time for the meter reading to settle down. I put a fresh battery in the Fluke DMM, and I also tested a batch of 5% tolerance 1/4 watt carbon resistors I had. They all read a little low, none read high, but none were low outside the 5% tolerance. So, my reading of U12 to ground is 10% low. The manual is pretty clear that the resistance must be 500 ohms. What is my next step? Thanks. Brian W3BW *Brian F. Wruble, C.F.A. *70 is the new 40.* * Mail: 1107 Key Plaza, PMB 447 Key West, FL 33040-4077 Summers: P.O.Box 57, 7400 Augustine Herman Highway, Georgetown, MD 21930 eFax 305.768.0278 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K144XV
Thank you for answer, The spurious signals are not only visible on P3 but perfectly audible in the speaker. I have also tried turning P3 off and unplug it but the signals are always present and audible. Fausto IK4NMF - Original Message - From: Tom H Childers n...@n5ge.com To: Fausto Coletti faustocole...@alice.it Cc: 'Elecraft Mailing List' elecraft@mailman.qth.net Sent: Saturday, May 18, 2013 7:31 PM Subject: Re: [Elecraft] K144XV That sounds like a P3 cable problem. There have been reports of faulty BNC cables supplied in a batch that was bad from the supplier. Try contacting Elecraft and describe the problem to them. Also while you are waiting to call Elecraft over the week-end, make sure that ALL of the cable routing is as it was before the installation. That covers any existing cables you may have moved around. Good luck, 73, Tom Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member On Sat, 18 May 2013 18:41:53 +0200, Fausto Coletti faustocole...@alice.it wrote: Today I installed the module K144XV. It all works ok but I noticed several spurious signals received, in particular each 12.5 kHz at a level of around -140 dbm indicated on P3, plus some pretty strong signals such as at 144.4165 to S7 and others. Obviously signals are present with the antenna disconnected and with a 50 Ohm load on the antenna connector. I exclude the origin from the outside of the transceiver, I disconnected all possible noise sources such as switching power supplies and similar. It 's normal or there may be a problem? Any suggestions? Fausto IK4NMF __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html 73, Tom Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member - Nessun virus nel messaggio. Controllato da AVG - www.avg.com Versione: 2013.0.3336 / Database dei virus: 3162/6335 - Data di rilascio: 18/05/2013 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: Elevated vs. Buried Radials
The SteppIR information is overly simplified. For the best current analysis of elevated vs. on ground radials see the extensive data from N6LF - http://www.antennasbyn6lf.com In particular, read the comments on elevated radials: http://www.antennasbyn6lf.com/2011/02/comments-on-elevated-radials.html studies on ground systems: http://www.antennasbyn6lf.com/2009/12/series-of-qex-articles-on-ground-system-experiments.html and studies on elevated radial systems: http://www.antennasbyn6lf.com/2012/02/elevated-radial-ground-systems-some-cautions.html One of the major red flags with elevated radials - they must be a major fraction of a wavelength (1/8 wave is a good rule of thumb) before they really act independently of the dirt. Even then, nothing will reduce the losses in the 1 to 10 wavelength area responsible for forming the low take off angle lobe. 73, ... Joe, W4TV On 5/18/2013 1:36 PM, Ron D'Eau Claire wrote: Hi Joel: This is a very good summary that clearly shows the difference between elevated and in-ground radials. (See Figure 1 on the second page) http://www.steppir.com/wp-content/uploads/2011/10/radial-systems-for-vertica l-antennas.pdf Bottom line, if you can install a LOT of in-ground radials (the A.M. broadcast stations use about 100), the efficiency of the antenna will be high. If you can install resonant elevated radials, a much small number will produce even higher efficiencies. In ground radials do not need to be very long. About 0.2 wavelengths seems to be as good as a much longer radial. Above ground resonant (1/4 wave long) radials take up a lot more room. Some A.M. Broadcast stations in the USA have used elevated radials with great results. At least one was described in an A.R.R.L. antenna compendium a few years ago. However, their antenna configurations are controlled by the F.C.C. so they must go through approvals for the design. And resonant elevated radials at those frequencies are rather long! 73, Ron AC7AC P.S. The only FOD I know about is Foreign Object Damage - the nemeses of jet engines. Haven't a clue how that applies here, Hi! -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joel Black Sent: Saturday, May 18, 2013 5:37 AM To: elecraft Subject: [Elecraft] OT: Elevated vs. Buried Radials A lot of talk has been going on about radials on the KX3 Yahoogroups Reflector, but there is so much FOD on that reflector, I usually delete most of the messages. Although it may have been mentioned there, I have probably missed it. Other than for portability, why are elevated radials so important? I have a ground-mounted 6BTV (not my main antenna) in my backyard. I have four radials for each band and they were all put in with yard staples. I did this in the Fall after the last grass cutting. By Spring, the grass had grown over them. Now, several years later, there is at least one inch of dirt over them. In all honesty, it's only a backup antenna and probably needs some radials replaced. Now, in my situation, there was no way I was going to use elevated radials. Someone recently posted a link to the SteppIR vertical - the CrankIR. Looking at the one page from the link, it only mentions elevated radials. Now, I've never seen a loaded-tower broadcast antenna with elevated radials either. Is the only benefit portability? Please, I do not want to also be accused of perpetuating FOD on another reflector. I'd prefer you reply directly to me. If needed, I'll summarize and repost. Thanks, Joel - W4JBB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Problem in Assembly, need advice
Hi Brian, this measure point is the output terminal of a 5V voltage regulator (U12 MC7805ACT). A value of 445 ohms is not alarming. A matter of tolerances in all parts connected to this point. But I expect Elecraft will react too. 73s, Twan - PA0KV Message: 14 Date: Sat, 18 May 2013 10:32:20 -0400 From: Brian F. Wrublebwru...@gmail.com To: Elecraft Reflectorelecraft@mailman.qth.net Subject: [Elecraft] K3 Problem in Assembly, need advice Message-ID: CA+8EV6oR9kWMZMMLvX=vRaULbOE8Q+WYqs0iNjC0TyMDeR8R=q...@mail.gmail.com Content-Type: text/plain; charset=ISO-8859-1 I am assembling K3 s/n 7394. I have come to the step on page 45, DMM resistance measurements. The resistance between a terminal on U12 and ground measures 445 ohms. It is supposed to be 500 ohms. I am using an accurate Fluke DMM. What am I looking for? 73 de Brian W3BW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: Elevated vs. Buried Radials
Joe, the article I referenced clearly said to use 1/4 wavelength radials when they are elevated. That's agrees with everything I've read and done over years as well. I'll stand behind that SteppIR article as showing how to put up a vertical that avoids the worst pitfalls. (And it's basically a repeat of what's in every Antenna Handbook I've read over the years.) Can one tweak it even further? Perhaps. The articles you reference study some ideal situations that most Hams cannot emulate that do so, especially in producing a perfectly omnidirectional pattern with a minimum of 4 radials. And they confirm the basic rules covered in the SteppIR article. 73, Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe Subich, W4TV Sent: Saturday, May 18, 2013 11:53 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] OT: Elevated vs. Buried Radials The SteppIR information is overly simplified. For the best current analysis of elevated vs. on ground radials see the extensive data from N6LF - http://www.antennasbyn6lf.com In particular, read the comments on elevated radials: http://www.antennasbyn6lf.com/2011/02/comments-on-elevated-radials.html studies on ground systems: http://www.antennasbyn6lf.com/2009/12/series-of-qex-articles-on-ground-syst em-experiments.html and studies on elevated radial systems: http://www.antennasbyn6lf.com/2012/02/elevated-radial-ground-systems-some-c autions.html One of the major red flags with elevated radials - they must be a major fraction of a wavelength (1/8 wave is a good rule of thumb) before they really act independently of the dirt. Even then, nothing will reduce the losses in the 1 to 10 wavelength area responsible for forming the low take off angle lobe. 73, ... Joe, W4TV __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Elecraft SSB net announcement and 5/12/13 results
The weekly Elecraft SSB net will meet tomorrow at 1800z on 14.3035 MHz. I'll be net control from Oregon. See you there. Last Sunday's net was smallish, with 24 participants. Participants from the 5/12/13 net follow: Station NameQTH Rig S/N N6JWJohnCA K3 936 KM4IK Ian GA K3 281 K1NWBrian RI K3 4974 W4PFM PaulVA K3 1673 K4GCJ Gerry NC K3 1597 KJ6CBS DaveCA K3 4052 K7EMF GaryWA K3 4628 WD5MDavid TX K3 6493 W4RKS Jim AL K3 3618 KG7BFX Dan AZ FT817ND QRP AE6JV BillCA K3 6299 W7LRY Larry CO K3 6347 WB9JNZ EricIL FT990 K3 due back KB3FBR Joe PA K2 6178 WW4JF JohnTN Kx3 159 W1DFB Don AZ K3 2937 N3RQSam VA K3 6795 W8OVDaveTX K3 3139 AE7GGeorge WA K3 3936 KE5VDT Roger TX K3 6054 WV5IDwayne TX K3 5287 W6NIA MattCA K3 24 N4LKE Rob TN K3 6763 NS7PPhilOR K3 1826 73, Phil, NS7P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] HAMVENTION is special ! !
AW, quit your belly-aching about the Elecraft specials at HAMVENTION; typically it is less than 5% off some of the items - - not from whatever you purchase - - - - - - Hamvention entry is $ 20 (pre-registartion) add to that the transportation to get there (distance 200 miles for me ~ $16 in petrol, one way ~ plus some eats while there = 75 bucks are gone by the time I got home again - - - - I didn't buy anything from Elecraft ~ have the shirt, don't wear a cap ~ had to see the 100W Amp/Tuner package, a short-chat with Eric and my usual hug from Lirma - - - - Life is great ~ Cheers, Jan K1ND __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K144XV Strange Readings
Will someone please describe this center spacer so I can verify whether it is in mine or not? Was it an active part of the circuitry? If I have it in mine can I just remove it without any other modifications? Why does removing an inactive part have any effect? 73, Jim KG0KP -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ron D'Eau Claire Sent: Friday, May 17, 2013 10:20 PM To: mtebe...@mchsi.com; elecraft@mailman.qth.net Subject: Re: [Elecraft] K144XV Strange Readings Mike: First e-mail k3supp...@elecraft.com or call them (831-763-4211) for further guidance. As Dave says the center spacer was removed very early on when some stability issues arose. I have an early pre-production board, but it was stable with and now without that spacer. This sounds like something new but may be something that you can tackle yourself. 73, Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Michael Eberle Sent: Friday, May 17, 2013 7:57 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K144XV Strange Readings Dave, Yes that is exactly what it appears to be doing. My frequency counter is showing RF at 153.600 MHz regardless of what part of the band it is tuned to. I removed the K144XV Reference Lock Board and there was no change. Is there anything that can be done to correct this, or do I need to send it back to Elecraft? I just bought it 2 months ago so it shouldn't be an early production run board. Thanks, Mike KI0HA On 5/17/2013 6:50 PM, WW2R Elecraft wrote: Both my early edition K144XV were not unconditionally stable and were swr intolerant I think you will find that the 3:1 swr is because it is oscillating out of band. Try listening on a scanner. I have experienced this on my two k144xv and g4ddk had the same issue with his. One example produced 162MHz, one 168MHz one around 158MHz. When you tune or speak it stabilizes and generates on 2m My k144xv were fine if I operated at the bottom end of 2m where the swr was 1.1:1 but my antenna swr rose to 1.6:1 at around 144.8MHz and above this point it showed the instability you mentioned Mine were replaced with the later production run k144xv (the one without the centre spacer, but that could just be coincidence!) and the issue has not arisen since Dave G4FRE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: Elevated vs. Buried Radials
How can ya'll worry about this when the burning issues of free hats and discounts remain unsolved? -W4SK John T. Gwin jtg...@comcast.net judgejohng...@wilsoncountytn.com - Original Message - From: Ron D'Eau Claire r...@cobi.biz To: elecraft@mailman.qth.net Sent: Saturday, May 18, 2013 2:31 PM Subject: Re: [Elecraft] OT: Elevated vs. Buried Radials Joe, the article I referenced clearly said to use 1/4 wavelength radials when they are elevated. That's agrees with everything I've read and done over years as well. I'll stand behind that SteppIR article as showing how to put up a vertical that avoids the worst pitfalls. (And it's basically a repeat of what's in every Antenna Handbook I've read over the years.) Can one tweak it even further? Perhaps. The articles you reference study some ideal situations that most Hams cannot emulate that do so, especially in producing a perfectly omnidirectional pattern with a minimum of 4 radials. And they confirm the basic rules covered in the SteppIR article. 73, Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe Subich, W4TV Sent: Saturday, May 18, 2013 11:53 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] OT: Elevated vs. Buried Radials The SteppIR information is overly simplified. For the best current analysis of elevated vs. on ground radials see the extensive data from N6LF - http://www.antennasbyn6lf.com In particular, read the comments on elevated radials: http://www.antennasbyn6lf.com/2011/02/comments-on-elevated-radials.html studies on ground systems: http://www.antennasbyn6lf.com/2009/12/series-of-qex-articles-on-ground-syst em-experiments.html and studies on elevated radial systems: http://www.antennasbyn6lf.com/2012/02/elevated-radial-ground-systems-some-c autions.html One of the major red flags with elevated radials - they must be a major fraction of a wavelength (1/8 wave is a good rule of thumb) before they really act independently of the dirt. Even then, nothing will reduce the losses in the 1 to 10 wavelength area responsible for forming the low take off angle lobe. 73, ... Joe, W4TV __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html - No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.2904 / Virus Database: 3162/6329 - Release Date: 05/16/13 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] HAMVENTION is special ! !
I got my hat, a KX3 Kit for my colleague at the office, a really good chat with everyone on the stand, nearly went for the P3 but managed to resist. Even discussed with Eric about them producing a 70MHz transverter, EU Elecrafters and others should let them know the degree of interest. Great friendly people Best regards, Tim Hague, M0AFJ Skype m0afj.Tim Sent on my iPad On 18 May 2013, at 16:06, Jan k...@comcast.net wrote: AW, quit your belly-aching about the Elecraft specials at HAMVENTION; typically it is less than 5% off some of the items - - not from whatever you purchase - - - - - - Hamvention entry is $ 20 (pre-registartion) add to that the transportation to get there (distance 200 miles for me ~ $16 in petrol, one way ~ plus some eats while there = 75 bucks are gone by the time I got home again - - - - I didn't buy anything from Elecraft ~ have the shirt, don't wear a cap ~ had to see the 100W Amp/Tuner package, a short-chat with Eric and my usual hug from Lirma - - - - Life is great ~ Cheers, Jan K1ND __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K144XV Strange Readings
Jim, it was a ground loop problem caused by the metal spacer. You'd have to have a very early K144XV for it to be present. Here's how to tell if yours needs modifying as described in the mod instructions: This change was incorporated into the K144XV assembly process in September, 2010. All K144XV's shipped after September are already modified. If you are unsure, remove the K3 top cover and inspect the K144XV module mounted on the left side panel. If there is a screw in the hole directly above the Elecraft name on the top label, the modification has not been done. The K144XV module is directly under the K3 top cover mounted on the left side panel (when the front of the K3 is toward you). The label says Elecraft K144XV 2M Module. You probably don't need to completely remove the top cover. Just lift it enough to see that label. Note that there should be two empty holes in the top - that one and one closer to the side panel (unless Elecraft has redesigned the cover to remove the superfluous holes). Note that there SHOULD be a screw in a hole just to the right of the word STATUS on the edge farthest from the side panel. If yours has a screw in that location (instead of an empty hole), let me know and I'll dig up a copy of the mod sheet for you. I can no longer find it on the Elecraft web site. 73 Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Miller Sent: Saturday, May 18, 2013 1:59 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K144XV Strange Readings Will someone please describe this center spacer so I can verify whether it is in mine or not? Was it an active part of the circuitry? If I have it in mine can I just remove it without any other modifications? Why does removing an inactive part have any effect? 73, Jim KG0KP -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ron D'Eau Claire Sent: Friday, May 17, 2013 10:20 PM To: mtebe...@mchsi.com; elecraft@mailman.qth.net Subject: Re: [Elecraft] K144XV Strange Readings Mike: First e-mail k3supp...@elecraft.com or call them (831-763-4211) for further guidance. As Dave says the center spacer was removed very early on when some stability issues arose. I have an early pre-production board, but it was stable with and now without that spacer. This sounds like something new but may be something that you can tackle yourself. 73, Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Michael Eberle Sent: Friday, May 17, 2013 7:57 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K144XV Strange Readings Dave, Yes that is exactly what it appears to be doing. My frequency counter is showing RF at 153.600 MHz regardless of what part of the band it is tuned to. I removed the K144XV Reference Lock Board and there was no change. Is there anything that can be done to correct this, or do I need to send it back to Elecraft? I just bought it 2 months ago so it shouldn't be an early production run board. Thanks, Mike KI0HA On 5/17/2013 6:50 PM, WW2R Elecraft wrote: Both my early edition K144XV were not unconditionally stable and were swr intolerant I think you will find that the 3:1 swr is because it is oscillating out of band. Try listening on a scanner. I have experienced this on my two k144xv and g4ddk had the same issue with his. One example produced 162MHz, one 168MHz one around 158MHz. When you tune or speak it stabilizes and generates on 2m My k144xv were fine if I operated at the bottom end of 2m where the swr was 1.1:1 but my antenna swr rose to 1.6:1 at around 144.8MHz and above this point it showed the instability you mentioned Mine were replaced with the later production run k144xv (the one without the centre spacer, but that could just be coincidence!) and the issue has not arisen since Dave G4FRE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KE7X KX3 book available -- I have enough help, thank
Thanks to all who responded. I'll be in contact with a few of you. 73, Fred Fred Cady fcady at ieee dot org -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft- boun...@mailman.qth.net] On Behalf Of Cady, Fred Sent: Thursday, May 16, 2013 5:07 PM To: Elecraft Reflector Subject: [Elecraft] KE7X KX3 book available Greetings all. The KE7X KX3 book (The Elecraft KX3) is hot off the presses (or hot in the presses). It is now available from Lulu (www.lulu.com) or from KE7X (www.ke7x.com). This book follows the general approach taken by the KX3's big sibling's book for the K3. There are many schematics and diagrams for those who learn best by reading. Hands-on learners will enjoy working through exercises designed to illustrate the KX3's many features. There are two versions of the book. A full-size, 8.5 x 11 version is coil bound just like the K3 book. For portable operations, a portable- size, 6 x 9 coil-bound version is available. It has exactly the same information as the full size book (even the font size is the same). It is just formatted into the smaller size, which fits nicely into one of Rose's KX3 cases. KE7X can do a special order for those who would like a 3-hole punched book. This edition of The Elecraft KX3 has been published knowing that all features planned for the KX3 by Elecraft have not been implemented. We have attempted to cover those situations where features are known to be coming. As new information about new features becomes available, and as the inevitable errors are discovered, updates and corrections will be posted on the www.ke7x.com website. These will be freely available as pdf files on the website. When the KXPA100 100-W amplifier, the KXAT100 100-W antenna tuner, and the KX3-2M two meter transverter become available, a companion book covering these products will be published. Those ordering from Lulu may be able to use the discount code MAYBOOKS13 until the end of May for a 20% discount. Sorry, but I can't do that too. Fred Cady fcady at ieee dot org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K8UT RTTY presentation at Dayton
I attended the RTTY forum today at Dayton, and one of the presentations was from Larry, K8UT about a mechanism that he uses when doing SP in RTTY Contests -- he calls it Adaptive RX, and it's described in his program documentation for a utility that he wrote to control his Icom rig - http://www.k8ut.com/tiki-index.php?page=CI-Vfilter+Utility+Documentation#CI-Vfilter_Utility . As I understand it, he detects VFO frequency changes, and time on frequency to expand/narrow the RTTY filters dynamically, so that they're wider as the frequency is changing (moving up/down the band), and when the 'dwell time' on a frequency exceeds a certain specifiable time, narrows, as it's expected that the VFO is stopped on a signal. Larry's implemented it by a 'serial filter' of the his Icom's serial stream, and something similar could be done for the K3... but that sure seems like something cool that could be built in, eventually. -Brian N9ADG __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 Birdies
I have recently noticed S7 birdies on 7038,10122,14030,21022 and 28045. Not sure if they always been there, or it is just absense of decent CW signals on the band which make them stand out. Anybody else have this problem? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Birdies
On 5/18/2013 4:06 PM, n...@aol.com wrote: I have recently noticed S7 birdies on 7038,10122,14030,21022 and 28045. Not sure if they always been there, or it is just absense of decent CW signals on the band which make them stand out. Anybody else have this problem? I have birdies, just not on those frequencies, and I know what mine are. I host the wireless company's neighborhood RAP at the top of my tower and power it in exchange for free Internet access at the backhaul speed. Mine are LO's and clocks in the three radios [1-2.4 and 2-5GHz] up there. 73, Fred K6DGW - Northern California Contest Club - CU in the 2013 Cal QSO Party 5-6 Oct 2013 - www.cqp.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Birdies
On Sat, May 18, 2013 at 4:06 PM, n...@aol.com wrote: I have recently noticed S7 birdies on 7038,10122,14030,21022 and 28045. Not sure if they always been there, or it is just absense of decent CW signals on the band which make them stand out. Anybody else have this problem? At least some of those (notably 10122 and 14030) are common ethernet birdies. K9YC has recommendations in http://audiosystemsgroup.com/RFI-Ham.pdf 73, ~iain / N6ML __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: Elevated vs. Buried Radials
I like a guy who can get to the essence of an issue. On May 18, 2013, at 2:34 PM, W4SK w...@comcast.net wrote: How can ya'll worry about this when the burning issues of free hats and discounts remain unsolved? -W4SK John T. Gwin jtg...@comcast.net judgejohng...@wilsoncountytn.com - Original Message - From: Ron D'Eau Claire r...@cobi.biz To: elecraft@mailman.qth.net Sent: Saturday, May 18, 2013 2:31 PM Subject: Re: [Elecraft] OT: Elevated vs. Buried Radials Joe, the article I referenced clearly said to use 1/4 wavelength radials when they are elevated. That's agrees with everything I've read and done over years as well. I'll stand behind that SteppIR article as showing how to put up a vertical that avoids the worst pitfalls. (And it's basically a repeat of what's in every Antenna Handbook I've read over the years.) Can one tweak it even further? Perhaps. The articles you reference study some ideal situations that most Hams cannot emulate that do so, especially in producing a perfectly omnidirectional pattern with a minimum of 4 radials. And they confirm the basic rules covered in the SteppIR article. 73, Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe Subich, W4TV Sent: Saturday, May 18, 2013 11:53 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] OT: Elevated vs. Buried Radials The SteppIR information is overly simplified. For the best current analysis of elevated vs. on ground radials see the extensive data from N6LF - http://www.antennasbyn6lf.com In particular, read the comments on elevated radials: http://www.antennasbyn6lf.com/2011/02/comments-on-elevated-radials.html studies on ground systems: http://www.antennasbyn6lf.com/2009/12/series-of-qex-articles-on-ground-syst em-experiments.html and studies on elevated radial systems: http://www.antennasbyn6lf.com/2012/02/elevated-radial-ground-systems-some-c autions.html One of the major red flags with elevated radials - they must be a major fraction of a wavelength (1/8 wave is a good rule of thumb) before they really act independently of the dirt. Even then, nothing will reduce the losses in the 1 to 10 wavelength area responsible for forming the low take off angle lobe. 73, ... Joe, W4TV __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html - No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.2904 / Virus Database: 3162/6329 - Release Date: 05/16/13 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] RFTB Sunday Night
Tomorrow night is the May 2013 edition of the Run For The Bacon. That friendly lil' ol' QRP Sprint sponsored by your friends at the Flying Pigs QRP Amateur Radio Club International. Join us for a spell to have some fun and to say Hi to friends, old and new. If you're coming back from Dayton and have some energy left - join us (maybe on that new radio you just bought?) If you didn't go to Dayton - then have at it and have fun! The time is the same as always: East coast - 9:00 to 11:00 PM local time Midwest - 8:00 to 10:00 PM local time Rockies - 7:00 to 9:00 PM local time West coast - 6:00 to 8:00 PM local time The rules are at: http://fpqrp.org/pigrun/ 73 de Larry W2LJ FP# 612 QRP ARCI# 4488 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] QRPworks Ham Central Terminal
Hello The user manual was just uploaded to the Files section of the Yahoo KX3 user group. It will be available on our website www.QRPworks.com soon. We had many visitors to our booth in Dayton requesting more information on what the Ham Central Terminal does and how it works. The manual does a good job of explaining all of its features and how to use them. By the way, this terminal is an outgrowth of the original Data Depot described on this reflector almost a year ago. We received much feedback about your desires for what you would like the Data Depot to do and the Ham Central Terminal is the final result. Like Elecraft, the Ham Central Terminal can easily be re-loaded with free software updates as they become available. These updates will be made available on our website, www.QRPworks.com. For those of you who have reserved a delivery slot, we are much appreciative. We will notify each of you individually when we are ready to ship to make make payment arrangements. 73 Shel Radin KF0UR and Steve Silverman KB3SII -- View this message in context: http://elecraft.365791.n2.nabble.com/QRPworks-Ham-Central-Terminal-tp7573812.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Free Elecraft Hats ( 'T'-Shirts)
Raise the price of Elecraft products 15% and give everyone two hats and two shirts at the time they order $250 of material - this ought to work for those who desire free stuff. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Combo pre-amp
Well I do hope there will be a version for 10M perhaps that will install within the K3. Much as it would be nice to have I am not going to buy more boxes needing to be plugged in, cabled or whatever. Whilst I understand some folks have space available and can wire in as many boxes as are available, those of us who operate portable tire very quickly of sorting cables, boxes and the resultant tangled leads. I guess I will have to wait and see what is produced but another external box such as the 6M pre-amp which protrudes too far and can easily be knocked around is a non starter for me no matter that I could use it, it is what it is, a box too far. Gary On 19 May 2013 03:32, Jack Berry we...@yahoo.com wrote: Spoke with Eric earlier today. The 6/10 meter per-amp is under way. He hopes to have them available in two to three months. I don't have pricing info. On Fri, 17 May 2013 16:42:01 -0400, Jack Berry we...@yahoo.com wrote: Has there been any information of Elecraft producing a 6+10 meter ore-amp? Seems I read a hint in this months ago. 73, Jack __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html 73, Tom Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- *Gary - VK1ZZ Skype: Gary.VK1ZZ Motorhome Portable The Shack* *Elecraft K3 P3 Panadapter KPA500FT KAT500FT** KX3-K * __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Elecraft CW Net Report for May 12th 13th, 2013
On 14050 kHz at 2200z: NO8V - John - MI - K3 - 820 AC5P - Mike - OK - K3 - 2170 AB9V - Mike - IN - K3 - 398 N0TA - John - CO - K3 - 994 K0DTJ - Brian - CA - K3 - 4113 N0DA - Dan - OR - KX3 - 285 W8OV - Dave - TX - K3 - 3139 On 7045 kHz at 0100z: N0TA - John - CO - K3 - 994 K6PJV - Dale - CA - K3 - 1183 W8OV - Dave - TX - K3 - 3139 W0CZ - Ken - ND - K3 - 457 N0DV - Dave - CO __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Elecraft CW Net Announcement
Good Evening, After last week's warmer than normal temperatures we are back to normal again: rain with highs in the low 50s. It was nice but it is easier to work in the mist. The loggers are now keeping better hours. They are not starting at 3 AM but rather 5 AM. Farmer's hours are something more normal for me. The sun was active this week. Quite a few flares with at least four of them in the X class. That active sun spot group is nearly head-on to us right now. According to Space Weather we just received a glancing blow from a CME with a stronger one due soon. With all this ionic activity the bands have been quite changeable. S8 to S2 in a moment and back again just as quickly. There is also a storm closer to us which will effect 40 meters tomorrow. It look as if there is one continuous thunderstorm from North Dakota all the way down to Oklahoma. Last time I checked these areas look prime for tornados. The NOAA reports significant tornadoes. Last time I was anywhere near a tornado I considered it significant; I am unsure of their nomenclature :) Please join us tomorrow afternoon and evening. 1) Hail signs (first letter or two of the suffix of your call) 2) NCS help (as well as QSP/QNP relay help) Sunday 2200z (Sunday 3 PM PDT) 14050 kHz Monday 0100z (Sunday 6 PM PDT) 7045 kHz Stay warm, Kevin. KD5ONS - __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K7WTG Dayton
Really? Sent me the money and I'll order whatever you want for you... Dr. William J. Schmidt - K9HZ / J68HZ/ 8P6HK/ ZF2HZ Owner - Operator Big Signal Ranch Staunton, Illinois email: b...@wjschmidt.com -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jeff KB2M Sent: Friday, May 17, 2013 12:27 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K7WTG Dayton Even though I'm not planning any Elecraft purchases in the near future I agree this doesn't seem fair. Also, almost every major retailer has a 'Dayton discount' for the 3 days of the hamfest. I would think it would be in Elecraft's best interest to extend the discount to the less fortunate who can't go to Dayton, for whatever reason. 73 Jeff kb2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Harry White Sent: Friday, May 17, 2013 13:09 PM To: 'Howard Stephenson'; k7...@arrl.net Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] K7WTG Dayton Howard, That sure seems like a massively unfair policy. There are many, many of us who simply cannot afford to go to Dayton but would appreciate a discount during the once-a-year hamfest. So if you have money and can afford to go to Dayton, you get a cheaper price for Elecraft products. Wow. Harry K1RSA -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Howard Stephenson Sent: Friday, May 17, 2013 12:57 PM To: k7...@arrl.net Cc: elecraft@mailman.qth.net Subject: [Elecraft] K7WTG Dayton Pete, We'll be happy to take any order from you. We just can't give you the Dayton Special unless you are there. -- -- 73, Howard Stephenson K6IA Elecraft Customer Support (831) 763-4211 EXT 169 -- __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
