Re: [Elecraft] K3 / KPA500 / KAT500 Tuning
Hi all, Now that we are talking about the tuning of the K3 line. As a matter of fact, I have the K3-KPA500-KAT500 combo and when tuned, it workes just fine.All is working as it should but still, this combunation can do much better. The tuning process is not so smooth as I would expect it to be. The K3 line is supposed to have great integration, and I dare to say: yes it has integration BUT up to a certain level. Yes, we have bandswitching in place (everybody has that) Yes, the KPA goes off line when tuning and fires immediately after the tuning process (good from Elecraft). Yes, the KAT remembers the setting per band and per band segment (not special) In total: absolutely Good. Here's what I miss and why. I often take the K3-line with me to other places, and at home my antenna-impedance reacts to rain pretty quick so retuning is often necesarry. The tuning proces is not as I would expect from a well integrated line. I have to press two tune buttons to do so, switch on the K3 signal (tune button) and then press the tune button on the KAT500. After that, stop the signal from the K3 (tune button again) How smooth would it be that I could press the tune button on the KAT500 and the KPA500 would go to standby (it does that already) and the K3 gives the tuning signal automatically as long as the tuning process of the KAT500 needs it. This would then work the same way as the tuning of the K3 and its internal tuner. Off course I would like the badsegment info for the KAT500 transferred from the K3 via the AUX cable instead of plain RF, but that has been discussed many times. I wonder if it could be done like this: send the bandsegment info from the K3 as soon as the K3 gives PTT. How is this done inside the K3? It switches the tuner to the right bandsegment setting when the PTT goes to on. Does this give an opening to programmers or is it just impossible because of the hardware that is involved? Then I'll be silent :-) 73 Arie PA3A __ 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] FW: Proper installation of PL 259's
Yes, Stupid me, I signed up for wrong email list, I thought this was an Elecraft email list? Not a list for cables, connectors, how to solder.. Emory WM3M -Original Message- From: Dr. William J. Schmidt, II Sent: Tuesday, November 12, 2013 10:39 PM To: elecraft@mailman.qth.net Subject: [Elecraft] FW: Proper installation of PL 259's So far I've counted 96 posts on soldering connectors onto coax. Really? 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 Jim Brown Sent: Tuesday, November 12, 2013 3:51 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Proper installation of PL 259's On 11/12/2013 8:42 AM, kd7gc wrote: They are very expensive, some in excess of $100 each, but they have very low loss, and they are sealed well against WX. When I order baluns or switches, I always specify that they must be made with 7/16 DINs, and I have never been disappointed with their performance. I'm trying to understand, Alan, so could you please. define performance, and please tell us in what application, at what frequency, and how you actually KNOW their performance. Unless you're using them in critical small signal applications at UHF, I'd call that a very poor allocation of financial resources. I can think of many better ways to spend $100. The loss through a quality PL259 or N connector is negligible in most real world applications, and there are simple and effective methods of waterproofing them. BTW -- the nicest male N connectors I've found for RG8/213-sized cable are made by Andros Engineering, a machine shop owned by a ham. They're a 2-piece connector, with both center and shield rigidly assembled to the same part to which you solder both center and shield, then screw the outer shell onto it. Very easy to do, and zero possibility of shield migration. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ 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] FW: Proper installation of PL 259's
Hey ya 'young whippersnapper' calm down some? If you want to know 'stuff' about Elecraft equipment, this IS the place. If you want to know something about antennas/feed lines, try www.towertalk.com which is the correct place for this PL259 thread in the first place. If you don't know where to look for information, ASK! But just about every time someone says How do you there are typically 30 to 100 responses of 'how I do it', nothing related to Elecraft equipment. I'm sure the Elecraft reflector moderator does not really have the time to stop these type threads every time they get started simply because he is off helping make a company run. Tom - W4BQF (no longer a 'young whippersnapper') -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Frank Precissi Sent: Wednesday, November 13, 2013 12:28 AM To: Elecraft Group Subject: Re: [Elecraft] FW: Proper installation of PL 259's On Tue, Nov 12, 2013 at 7:39 PM, Dr. William J. Schmidt, II b...@wjschmidt.com wrote: So far I've counted 96 posts on soldering connectors onto coax. Really? Yeah, really. A lot of people take really common stuff for granted, like soldering connectors onto coax. For those of us who don't have decades of experience/mistakes under their belt (and who got their ticket in the era of the internet and pre-made coax), small things like this (which have big impacts) are lost to convenience. For every person like me who freely admits that I dont know the correct way to solder a PL-259 and thought pre-made was 'good enough', there are probably 10 who are too afraid to come forward to admit it. You should be happy that some of us /want/ to make their own coax instead of the premade stuff. Isn't that keeping a little part of the 'real' hobby alive. I'll get off your lawn now. Im just a young whippersnapper. Frank KG6EYC -- CW: NAQCC #6554 | SKCC #10435 | FISTS #16155 | SOC #1038 | FPQRP #3186 Digital: FHC #4224 | 30MDG #6370 | DMC #5698 Gear: K3 #7164 | KX3 #1787 http://vadept.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] FW: Proper installation of PL 259's
On 11/13/2013 6:40 AM, Tommy wrote: Hey ya 'young whippersnapper' calm down some? If you want to know 'stuff' about Elecraft equipment, this IS the place. If you want to know something about antennas/feed lines, trywww.towertalk.com which is the correct place for this PL259 thread in the first place. The link you provided is for a R/C hobby store. Try this instead, takes you to the TowerTalk reflector on contesting.com: http://www.contesting.com/FAQ/towertalk 73, Dennis NJ6G __ 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] Proper installation of PL 259's
On Tue, Nov 12, 2013 at 7:39 PM, Dr. William J. Schmidt, II b...@wjschmidt.com wrote: So far I've counted 96 posts on soldering connectors onto coax. Really? Obviously a topic that resonates with many Elecraft users. 73, phil, K7PEH __ 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] Portable power, hydrogen fuel cell
It looks like these refillable cores hold the equivalent of 33 watt-hours of power. That's maybe 40% more power than the internal AA battery pack holds. The internal battery pack weighs ~240 grams, about the same as the reactor and a single core. So it seems like a fair trade in terms of energy/mass. A 5 watt solar panel weighs 170 grams, and during an average day will produce 20-40 watt hours of power. I might be more tempted to carry one of those around for limitless power as it costs much less and is less complicated. But the technology is interesting, and in its infancy, so it will be interesting to see where it winds up a decade from now. 73, Bob, WB4SON On Tue, Nov 12, 2013 at 9:26 PM, Doug Hudson d_hud...@outlook.com wrote: Being new to this group I don't know if this has been posted before. Have a look at the Brunton Hydrogen Reactor at: http://www.ohgizmo.com/2013/10/23/brunton-hydrogen-reactor-can-keep-you-off- the-grid-for-months/ The Brunton web page at http://www.brunton.com/products/hydrogen-reactor shows it but there isn't as much info as above. Two of these in series will keep a KX3 going for quite a while. A little rework and the possibilities are endless. Doug Hudson K7CUU Bremerton, WA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 temperatures?
What temp readings are others seeing for front panel and PA? FP = 41C PA = 36C -- GB 73 K5OAI Sam Morgan __ 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 temperatures?
In extended Rx... ambient temp 55-60F FP=32C PA=24C 73, Ken K3IU ~~~ On 11/13/2013 10:46 AM, Sam Morgan wrote: What temp readings are others seeing for front panel and PA? FP = 41C PA = 36C __ 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 temperatures?
more info wondering if the 41C was why I ask, rig has been on for last 36hr I placed my hand on the top and found it very warm to the touch I do have the dual rx but no xverter dual rx was on for last 4 hrs current drain says 1.48 - 1.59 A room temp 27.7 F On 11/13/2013 9:46 AM, Sam Morgan wrote: What temp readings are others seeing for front panel and PA? FP = 41C PA = 36C -- GB 73 K5OAI Sam Morgan __ 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] KAT100 question
Ed, Neither the KAT2 nor the KAT100 have provisions for manually selecting an L-C combination. The ALT position of the KAT2 does allow the automatic search for a match in a bit more detail than the normal algorithm. I believe the tuning algorithm for the 'normal' KAT100 may be close to the ALT algorithm for the KAT2. Only the KXAT1 allows you to set L-C combinations manually, and that is used the reception on the eneral coverage bands, which allows you to manually tune on frequencies where you cannot transmit. 73, Don W3FPR On 11/12/2013 10:58 PM, Eddy wrote: Like so many auto antenna tuners out there (MFJ, LDGetc...), many can be put in the manual mode and stepped through different settings.I'm running the K2 KAT100 tuner and really like the unit. So, is there a technique I can use to manually step through various L/C setting for those hard to tune antennas - sometimes the KAT!00 can't find a really good match for my various antennas? I noticed the K2 KAT2 tuner has an ALT mode for this purpose, but I couldn't find anything mentioned about an ALT mode for the KAT100? __ 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] Internal SWR Readings
Hi, it's Mark Griffin, KB3Z. I was wondering how reliable the SWR reading is on the K3? I have an external SWR/Power Meter hooked up between my K3, Antenna Tuner and my Amp. Sometimes there seems to be some major differences between the K3 and the External Meter. And it always is the fact the the K3 gives a higher reading then the External meter. Has anyone experienced this also and if so can one Sync up there Internal SWR meter on the K3? Thanks! Mark __ 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 Digest, Vol 115, Issue 23
Yup. I should have made that clear. Sorry for the omission. --Jeff, K6JW On 11/12/2013 3:46 PM, Jeffrey Wolf wrote: Regardless of the method of soldering a PL-259, before trying to flow solder through the holes in the connector, use a file on the surface surrounding the holes and even in the holes (you can use a small reamer) This is completely unnecessary (and is a really bad idea) if you are using Amphenol 83-1SP connectors -- they are silver-plated, which makes them very easy to solder, and if you file them you remove the silver plating! 83-1SP is the full part number, no additional letters or numbers. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] iSDR for K3
Don, You need to convert the K3 IF I/Q output into an audio source for any SDR app. The way I converted the IF I/Q out (*KXV3A) *of the K3 to audio is via the use of an LP PAN 2: http://www.telepostinc.com/LP-PAN.html . That feeds into a Steinberg UR-22 2 In/2 Out Audio USB Interface. The USB cable from the Steinberg goes to the Windows 8 laptop. I start up Ham Radio Deluxe (HRD). I then start NaP3 which connects not the the K3 directly via the com port, but to Ham Radio Deluxe. HRD virtualizes the radio comms and controls. Then when I click on the NaP3 spectrum screen, it changes HRD. When I click on a DX spot from HRD, it changes the NaP3 spectrum display. I have 3 screen setup, one for my HRD Log and DX Spots (radio controls), one for NaP3, and another for digital master (when doing digital modes). Of course my wife thinks I am training to be an FAA flight controller now. You could take the audio out of the LP PAN 2 into another audio input device like an iPad or whatever that runs an SDR app. 73, Doug Ellmore, Sr. - Head Coach, Southern HS Cross Country / www.southernathletics.org - Amateur Radio Operator: NA1DX / P40DE, Trustee Explorers Radio Club - NA3DX - d...@ellmore.net / 301-807-2193 __ 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] K1 owners in Southern Wisconsin
I'm considering the K1 kit and would like to speak with K1 owners in Southern Wisconin. My QTH is 30miles West of Madison. I am willing to drive to meet you and your K1. Hi Hi Please feel free to email me at boband...@tds.net 72 Bob __ 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] Internal SWR Readings
For some reason this comes up often on ham lists. The SWR meter measures the match AT THAT point in the network. The SWR varies along the feedline (which is why 1/2 wave feed sections are often desired, so you can get an accurate antenna feed point reading). You can take ten different meters, each a meter apart from each other on the cable and see ten different measurements. The most important reading is the one AT the transmitter (or at input of the tuner, if used); the rest are superfluous information; nice to know but not critical. 73, Rick wa6nhc -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of pastor...@verizon.net Sent: Wednesday, November 13, 2013 9:25 AM To: elecraft@mailman.qth.net Subject: [Elecraft] Internal SWR Readings Hi, it's Mark Griffin, KB3Z. I was wondering how reliable the SWR reading is on the K3? I have an external SWR/Power Meter hooked up between my K3, Antenna Tuner and my Amp. Sometimes there seems to be some major differences between the K3 and the External Meter. And it always is the fact the the K3 gives a higher reading then the External meter. Has anyone experienced this also and if so can one Sync up there Internal SWR meter on the K3? Thanks! Mark __ 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] Elecraft] FW: Proper installation of PL 259's
So far I've counted 96 posts on soldering connectors onto coax. Really? Dr. William J. Schmidt - K9HZ / J68HZ/ 8P6HK/ ZF2HZ --- Yep! What I have found is the three most asked technical questions by (beginning) hams are: 1) How do I program my HT? 2) How do you make antennas? 3) How do you put connectors on coax? Note the non-specific nature of the questions. A lot has changed since I became a new ham (1958): Radio kits are almost non-existent; my first radio was a kit and I taught myself how to solder (no elmer). People do not look up things in books - just google it or better just ask someone All my early knowledge came from ARRL publications which I read cover-to-cover many times (because as kid I had no money to buy anything; nearest ham was in the next town and I did not drive until age 16). (today) If you want it just buy it. That was not true for a lot of ham radio stuff back in the day! There was more building. Today's beginning ham is coming from a very different experience; usually computer and smart phone wise. Computers occupied whole buildings when I was a boy. In college one only had mechanical calculation (pencil or slide rule) and had to punch IBM cards at the computing center to use a computer (If you were lucky to have a programming class or were a graduate student with a research project) When I began college, the typical HS graduation present was a typewriter - today it is either a laptop or tablet. My first antenna was a 40m folded dipole made from TV twinlead (Huh? what's dat?). I soldered the PL-259 directly onto the twinlead to connect to my transmitter which loaded it just fine (6146 with pi-network). Reality - It is what it is! (yeah an old ham) bleep Now back to the present! 73, Ed - KL7UW http://www.kl7uw.com dubus...@gmail.com Kits made by KL7UW __ 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] FW: Proper installation of PL 259's
On Wed, 13 Nov 2013 09:40:02 -0500, Tommy wrote: If you want to know something about antennas/feed lines, try www.towertalk.com which is the correct place for this PL259 thread in the first place. If you don't know where to look for information, ASK! Ah! But, just how many of those young (and old) whippersnappers didn't know there could be such a difference between proper and poor PL installation before this topic expanded? There were several. Did it go on way too long? You bet. But that's the way the great Internet works these days, and you and I have extended it just a couple more lines worth. :o) You have to know there is a problem before you can ask how to fix it. Gary -- http://ag0n.net 3055: http://ag0n.net/irlp/3055 NodeOp Help Page: http://ag0n.net/irlp __ 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] K1 Owners in Southern Wisconsin
I am considering a K1. Would like to meet you and talk about your K1 72 Bob near Madison -- View this message in context: http://elecraft.365791.n2.nabble.com/K1-Owners-in-Southern-Wisconsin-tp7580828.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] FW: Proper installation of PL 259's
My computer has a very special key that I had custom made for me at great expense. It is labeled DELETE. I find that I use it quite a lot which makes it worth much more than I paid for it Obviously not very many people have ordered this convenient option. I can offer private instruction on how to get the best use of this marvelous added function if that would make things more pleasant for you.. 73, Charlie k3ICH - Original Message - From: WM3M w...@live.com To: b...@wjschmidt.com; elecraft@mailman.qth.net Sent: Wednesday, November 13, 2013 8:46 AM Subject: Re: [Elecraft] FW: Proper installation of PL 259's Yes, Stupid me, I signed up for wrong email list, I thought this was an Elecraft email list? Not a list for cables, connectors, how to solder.. Emory WM3M -Original Message- From: Dr. William J. Schmidt, II Sent: Tuesday, November 12, 2013 10:39 PM To: elecraft@mailman.qth.net Subject: [Elecraft] FW: Proper installation of PL 259's So far I've counted 96 posts on soldering connectors onto coax. Really? 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 Jim Brown Sent: Tuesday, November 12, 2013 3:51 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Proper installation of PL 259's On 11/12/2013 8:42 AM, kd7gc wrote: They are very expensive, some in excess of $100 each, but they have very low loss, and they are sealed well against WX. When I order baluns or switches, I always specify that they must be made with 7/16 DINs, and I have never been disappointed with their performance. I'm trying to understand, Alan, so could you please. define performance, and please tell us in what application, at what frequency, and how you actually KNOW their performance. Unless you're using them in critical small signal applications at UHF, I'd call that a very poor allocation of financial resources. I can think of many better ways to spend $100. The loss through a quality PL259 or N connector is negligible in most real world applications, and there are simple and effective methods of waterproofing them. BTW -- the nicest male N connectors I've found for RG8/213-sized cable are made by Andros Engineering, a machine shop owned by a ham. They're a 2-piece connector, with both center and shield rigidly assembled to the same part to which you solder both center and shield, then screw the outer shell onto it. Very easy to do, and zero possibility of shield migration. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ 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] Internal SWR Readings
Rick, I believe you're confusing SWR and impedance. If a transmission line is lossless, the SWR will be the same along the entire length of the line. If a transmission line is lossy, the SWR will get progressively lower as you move closer to the transmitter. In an extreme case (such as 1000 feet of old RG-58 or worse, at high enough frequencies), there will be so much loss in the line that EVERY antenna will look like 50 ohms back at the transmitter and the SWR will be 1:1 there! So the transmitter end of the line is the LEAST useful end to look at SWR. However, the COMPONENTS of the transformed antenna (or load) impedance DO vary along the line. And It is the antenna IMPEDANCE that repeats every 1/2-wavelength back toward the transmitter from the antenna end -- not the SWR. At all other points along the transmission line, unless the antenna impedance is purely resistive and exactly the same as the characteristic impedance of the transmission line the load impedance seen along the line will be a combination of resistive (real) and reactive (imaginary) parts. Those two components of impedance continually change in amplitude with distance (in wavelengths) along the line, repeating every half wavelength along the line. So if you have an impedance meter (rather than an SWR meter), you will, in fact, see those values of R and X vary from point to point along the line. But many, many, many combinations of R and X can all result in the same SWR. A very good way to see how R and X vary with distance back from the antenna along the transmission line -- even though the SWR remains constant -- is to understand what a Smith chart displays. One reason practical SWR meters don't read the same value of SWR on a line -- even at the same point on the line -- is because different circuit designs may have different amounts of error, or inaccuracy, for different amplitudes and combinations of R and X. And the greater the mismatch between the antenna (or load) impedance and the characteristic impedance of the transmission line, the larger those swings in R and X along the line will be. Thus, I'm not surprised that the SWR monitor in my K3 often shows a different SWR than my Kenwood wattmeter at essentially the identical point on the transmission line to my antenna. Even the world-renowned Bird wattmeter doesn't always do so well! There are many good treatments of SWR, transformed antenna impedance along a transmission line, and the use of Smith charts on the web and in many antenna books. Bud, W2RU On Nov 13, 2013, at 1:00 49PM, Rick Bates happymooseph...@gmail.com wrote: For some reason this comes up often on ham lists. The SWR meter measures the match AT THAT point in the network. The SWR varies along the feedline (which is why 1/2 wave feed sections are often desired, so you can get an accurate antenna feed point reading). You can take ten different meters, each a meter apart from each other on the cable and see ten different measurements. The most important reading is the one AT the transmitter (or at input of the tuner, if used); the rest are superfluous information; nice to know but not critical. 73, Rick wa6nhc -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of pastor...@verizon.net Sent: Wednesday, November 13, 2013 9:25 AM To: elecraft@mailman.qth.net Subject: [Elecraft] Internal SWR Readings Hi, it's Mark Griffin, KB3Z. I was wondering how reliable the SWR reading is on the K3? I have an external SWR/Power Meter hooked up between my K3, Antenna Tuner and my Amp. Sometimes there seems to be some major differences between the K3 and the External Meter. And it always is the fact the the K3 gives a higher reading then the External meter. Has anyone experienced this also and if so can one Sync up there Internal SWR meter on the K3? Thanks! Mark __ 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] Internal SWR Readings
Bud wrote: ... One reason practical SWR meters don't read the same value of SWR on a line -- even at the same point on the line -- is because different circuit designs may have different amounts of error, or inaccuracy, for different amplitudes and combinations of R and X -- That's a very important point. SWR meters are not highly accurate devices because they do not need to be highly accurate devices. With virtually any popular antenna system, especially on HF, a moderate SWR has no significant impact on performance. My first SWR meter was two small light bulbs connected to short lengths of twin lead (300 ohm TV feed line) taped to the same sort of feed line used to feed RF to my antenna. When the SWR was low, one bulb glowed a lot brighter than the other when I transmitted. That's all I needed. More than that was TMI (too much information), as they say. The advent of meters and now digital displays has only one advantage over the light bulbs; they provide a numerical readout of the presumed SWR at any given frequency. With them it's easier to see a significant change of SWR at that frequency from day to day that might indicate something amiss in the antenna system. That sort of monitoring is more important than ever since modern wide range antenna tuners will compensate for any changes, even a broken or shorted feed line between the rig and antenna. The 'red flag' isn't the actual SWR as much as it is an unexpected change in the indicated SWR. 73, Ron AC7AC __ 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] Proper installation of PL 259's
I got sick just looking at one of my pl259's...overload Reggie k6xr On Nov 13, 2013, at 05:46 AM, WM3M w...@live.com wrote: Yes, Stupid me, I signed up for wrong email list, I thought this was an Elecraft email list? Not a list for cables, connectors, how to solder.. Emory WM3M -Original Message- From: Dr. William J. Schmidt, II Sent: Tuesday, November 12, 2013 10:39 PM To: elecraft@mailman.qth.net Subject: [Elecraft] FW: Proper installation of PL 259's So far I've counted 96 posts on soldering connectors onto coax. Really? 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 Jim Brown Sent: Tuesday, November 12, 2013 3:51 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Proper installation of PL 259's On 11/12/2013 8:42 AM, kd7gc wrote: They are very expensive, some in excess of $100 each, but they have very low loss, and they are sealed well against WX. When I order baluns or switches, I always specify that they must be made with 7/16 DINs, and I have never been disappointed with their performance. I'm trying to understand, Alan, so could you please. define performance, and please tell us in what application, at what frequency, and how you actually KNOW their performance. Unless you're using them in critical small signal applications at UHF, I'd call that a very poor allocation of financial resources. I can think of many better ways to spend $100. The loss through a quality PL259 or N connector is negligible in most real world applications, and there are simple and effective methods of waterproofing them. BTW -- the nicest male N connectors I've found for RG8/213-sized cable are made by Andros Engineering, a machine shop owned by a ham. They're a 2-piece connector, with both center and shield rigidly assembled to the same part to which you solder both center and shield, then screw the outer shell onto it. Very easy to do, and zero possibility of shield migration. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ 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
[Elecraft] Input to K2
I've just finished, calibrated and installed the KSB2 in my K2. My question is, can I have both the key jack and the mic plug in at the same time without frying something? (Assuming my key and mic are not activated at the same time!) 73, Bryan VE6HBS __ 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] Input to K2
Yes, you can, Bryan, just be sure to select the proper mode for which you choose to tx with. Have a great day, --... ...-- Dale - WC7S in Wy Date: Wed, 13 Nov 2013 14:04:43 -0700 From: hbsav...@shaw.ca To: elecraft@mailman.qth.net Subject: [Elecraft] Input to K2 I've just finished, calibrated and installed the KSB2 in my K2. My question is, can I have both the key jack and the mic plug in at the same time without frying something? (Assuming my key and mic are not activated at the same time!) 73, Bryan VE6HBS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3: Receive Ant Question
Am I correct in assuming that the Rec Ant input is disconnected from the main receiver input upon transmit by way of a relay? If so, can I further assume that connecting a beverage, or other receive antenna, to the Receive Ant input will cause no harm to the main receiver upon transmit? In other words, is a relay enough protection? I ask because I would like to rule out needing an external protection device when using a beverage antenna. I run full legal power. Thanks in advance. 73, Steve, K4FJ __ 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) Re: Internal SWR Readings
On Wed, 13 Nov 2013 13:59:14 -0500, W2RU - Bud Hippisley wrote: If a transmission line is lossy, the SWR will get progressively lower as you move closer to the transmitter. In an extreme case (such as 1000 feet of old RG-58 or worse, at high enough frequencies), there will be so much loss in the line that EVERY antenna will look like 50 ohms back at the transmitter and the SWR will be 1:1 there! So the transmitter end of the line is the LEAST useful end to look at SWR. Correct. If the line is long (lossy) enough, a dead short will look fine at the transmitter end. I wish Smith charts had been spoken of and understood back when I got started. To this day, I do not understand them in the least. I wish I did. I am one who, most of the time, can no longer read something in text and transform it to new knowledge. It needs to be 'splained to me in a one on one dialog. SWR was measured by taping a short piece of twinlead (more to it than that) against your line and looking to see which light bulb lit up the strongest. :o) The RF ammeter was used for peaking output. Off I go to try again to find another explanation of Smith charts. Gary -- -- http://ag0n.net 3055: http://ag0n.net/irlp/3055 NodeOp Help Page: http://ag0n.net/irlp __ 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] Input to K2
Bryan, You must have noticed that the PTT and the DOT line are one and the same, Certainly they can be both plugged in at the same time. The only consequence is that in CW mode, you can either send a string of dots if the INP menu is set to PDLn or send CW with the PTT switch if the menu is in INP HAND. In either case, in SSB mode, the dot paddle can be used as a PTT switch in a 'pinch'. 73, Don W3FPR On 11/13/2013 4:04 PM, Bryan wrote: I've just finished, calibrated and installed the KSB2 in my K2. My question is, can I have both the key jack and the mic plug in at the same time without frying something? (Assuming my key and mic are not activated at the same time!) __ 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: FS Bird 6250 VHF/UHF Milliwatt Meter (vintage 1956)
I have a WORKING Bird model 6250 VHF/UHF milliwatt meter from way back in 1956. This little baby has a range of 0-250 milliwatts from 30 to 500 MHz and has a built in dummy load. It will indicate RF down to much lower frequencies than 30 MHz but I'm sure the meter reading won't be accurate much below 30 and I have no idea when this thing was last calibrated. I actually have a PDF copy of the original Operation and Maintenance manual. Of course, the spares and cables are no longer with it and the glass meter cover is cracked, but still intact. There is no debris inside the meter that I can see and it functions properly. Cosmetically it's about a 4 or 5 out of 10 as it has been well used. To make sure it worked, I tested it with my Elecraft KX3 QRP rig. I set the KX3 to .2 watts out at 54 MHz and output a steady CW carrier into the 6250. Much to my surprise, the meter indicated 200 milliwatts right on the nose. At 30 MHz it read slightly less. The only thing garnered from this test is that the meter works and the KX3's internal power output setting closely matches the meter. How well either is calibrated is anyone's guess - LOL. Asking $85 plus shipping for it or $85 face to face in the Wichita, KS area. I'll be listing it on the 4 State QRP reflector as well. According to the data plate on the front panel it weighs 2.5 pounds and if I ship it, I will securely cocoon it in bubble wrap and if I can find some nesting boxes, I'll double box it as well. That will probably add another pound so figure on 4 pounds from 67219 if you want it. Please email off list if you're interested and I have a number of high resolution pictures I can send if anyone wants. Jim Sheldon - W0EB __ 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] Internal SWR Readings
Actually, the SWR is constant along a lossless transmission line. It is true that the complex impedance varies in cycles of a half-wave as you move up or down the line. If the line has appreciable loss, the measured SWR will decrease the further you get from the antenna. Many years ago, the ham club at Keesler AFB had a tribander that didn't work, although the SWR was very low on all three bands. We finally discovered that it was very low *everywhere* in or out of the ham bands. Coax was wet inside and was probably the longest dummy load in Harrison County MS. Most SWR indicators and power meters aren't real accurate anyway. With the advent of digital displays, the confusion between accuracy and precision has really increased. The only number that really counts is zero return power. 73, Fred K6DGW - Northern California Contest Club - CU in the 2014 Cal QSO Party 4-5 Oct 2014 - www.cqp.org On 11/13/2013 10:00 AM, Rick Bates wrote: The SWR varies along the feedline (which is why 1/2 wave feed sections are often desired, so you can get an accurate antenna feed point reading). __ 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/KAT500/KPA500 tuning instructions
It would be great if someone would write out a concise set of tuning instructions for the K-Line. Then, perhaps, all questions regarding the proper procedure would be answered. As this has been a frequent and popular subject, there is room for a proper explanation. I am not seeking a long thread on this - simply the proper procedure in simple terms everyone can easily understand. Thanks, 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] K3: Receive Ant Question
Steve, The RX antenna input is protected by a Carrier Operated Relay. Other than that, there is no relay to disconnect the RX input. If your TX antenna is sufficiently separated from the RX antenna, there is no problem. How much is 'significant' is often a question, and the answer depends on your particular antenna installation. If you hear the COR relay operating, yours is not providing sufficient isolation and you should look into an external device (likely a relay will do) to disconnect the RX antenna during transmit. 73, Don W3FPR On 11/13/2013 4:20 PM, Steve, K4FJ wrote: Am I correct in assuming that the Rec Ant input is disconnected from the main receiver input upon transmit by way of a relay? If so, can I further assume that connecting a beverage, or other receive antenna, to the Receive Ant input will cause no harm to the main receiver upon transmit? In other words, is a relay enough protection? I ask because I would like to rule out needing an external protection device when using a beverage antenna. I run full legal power. __ 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: Receive Ant Question
I use this on the RX antenna: http://www.arraysolutions.com/Products/as_rxfep.htm ...works great. -Greg NY6C On Nov 13, 2013, at 3:16 PM, Don Wilhelm w3...@embarqmail.com wrote: Steve, The RX antenna input is protected by a Carrier Operated Relay. Other than that, there is no relay to disconnect the RX input. If your TX antenna is sufficiently separated from the RX antenna, there is no problem. How much is 'significant' is often a question, and the answer depends on your particular antenna installation. If you hear the COR relay operating, yours is not providing sufficient isolation and you should look into an external device (likely a relay will do) to disconnect the RX antenna during transmit. 73, Don W3FPR On 11/13/2013 4:20 PM, Steve, K4FJ wrote: Am I correct in assuming that the Rec Ant input is disconnected from the main receiver input upon transmit by way of a relay? If so, can I further assume that connecting a beverage, or other receive antenna, to the Receive Ant input will cause no harm to the main receiver upon transmit? In other words, is a relay enough protection? I ask because I would like to rule out needing an external protection device when using a beverage antenna. I run full legal power. __ 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: Receive Ant Question
Hi Steve, It is separated by a relay but that doesn't mean that you can't damage internal circuitry. If you hear relay clicking sounds while you are transmitting then you have tripped the protective COR (carrier-operated relay). If this occurs then you need to reducer power or separate your antennas more, and/or provide external protection. The diagram on page 42 of the K3 manual illustrates the presence of the COR(s). 73, Mike K2MK K4FJ wrote Am I correct in assuming that the Rec Ant input is disconnected from the main receiver input upon transmit by way of a relay? If so, can I further assume that connecting a beverage, or other receive antenna, to the Receive Ant input will cause no harm to the main receiver upon transmit? In other words, is a relay enough protection? I ask because I would like to rule out needing an external protection device when using a beverage antenna. I run full legal power. Thanks in advance. 73, Steve, K4FJ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: Elecraft@.qth This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Receive-Ant-Question-tp7580834p7580842.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3/KAT500/KPA500 tuning instructions
Fred Cady, KE7X, is about to release his newest manual detailing the operation of the KAT 500 and KPA 500. I've been involved in the review process and I think it will answer a lot of questions that people have. It should be out in the next couple of weeks and will be a great addition to Fred's K3 and KX3 manuals. Todd, WA7U -Original Message- From: Bill W2BLC Sent: Wednesday, November 13, 2013 2:59 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K3/KAT500/KPA500 tuning instructions It would be great if someone would write out a concise set of tuning instructions for the K-Line. Then, perhaps, all questions regarding the proper procedure would be answered. As this has been a frequent and popular subject, there is room for a proper explanation. I am not seeking a long thread on this - simply the proper procedure in simple terms everyone can easily understand. Thanks, 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] K3: Receive Ant Question
Guys, I thought he said RX antenna input. The COR is on the aux ant input. There is no COR on the RX antenna input (it's not needed, I think.) 73 de Brian/K3KO On 11/13/2013 22:28, Mike K2MK wrote: Hi Steve, It is separated by a relay but that doesn't mean that you can't damage internal circuitry. If you hear relay clicking sounds while you are transmitting then you have tripped the protective COR (carrier-operated relay). If this occurs then you need to reducer power or separate your antennas more, and/or provide external protection. The diagram on page 42 of the K3 manual illustrates the presence of the COR(s). 73, Mike K2MK K4FJ wrote Am I correct in assuming that the Rec Ant input is disconnected from the main receiver input upon transmit by way of a relay? If so, can I further assume that connecting a beverage, or other receive antenna, to the Receive Ant input will cause no harm to the main receiver upon transmit? In other words, is a relay enough protection? I ask because I would like to rule out needing an external protection device when using a beverage antenna. I run full legal power. Thanks in advance. 73, Steve, K4FJ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: Elecraft@.qth This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Receive-Ant-Question-tp7580834p7580842.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: 2012.0.2242 / Virus Database: 3222/6333 - Release Date: 11/13/13 - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2242 / Virus Database: 3222/6333 - Release Date: 11/13/13 __ 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] Internal SWR Readings
Please lets not allow this to run as long as the care and feeding of a PL259 connector. :oD I accept what you're all saying, in a perfect world. The originating poster stated that he was running through a tuner, which indicates it's far from perfect. That's fairly common, the other tuner reason is to extend the bandwidth of a given antenna (another conversation). The primary question was Why do they not read the same and the honest answer is: because they aren't looking at the same location(s) in the network. My take (and I'm not high on technical competency here): Since antennas are rarely (a number approaching zero) balanced or perfectly resistive and feedlines are never really lossless (just low enough to be acceptable) and the meters (expecting to see 50 ohms loads) are generally reading voltages (the results of the complex impedance) by various means, the combinations mean that the complex impedances (resistive and reactive at THAT point) are not the same along the entire run of the feed; meaning the meter will read what is at that point. It is inherently inaccurate, but commonly used. One worst case real world example, the G5RV in multi-band operation. It requires a specific feed length (per band) to be efficient because the feed is part of the matching system. End fed or OCF are about as bad (not balanced at all, impedances run wild). In an ideal world, the feed is simply a garden hose (or fire hose for QRO) to deliver signal to/from the antenna. In reality, it's far more complex than that. I submit that if anyone with a non-1:1 SWR antenna were to add a non x/2 wave section of feed (greater than say 5') and re-measure the SWR at the original location (the input to a tuner) it will be different (might be subtle, but it won't be the same). As mentioned by everyone, the actual causes vary, but are repeatable. Case in point: my center fed (80M EDZ) dipole (current length: 104 meters) is very reactive at the low end of 80 meters (22:1) even through a 4:1 common mode choke (balun). If I add a random section of coax (~42') between the balun and the tuner, the SWR at the tuner falls to 8.xx:1 which allows the KAT500/KPA500 to happily pump out all the power available. The coax and connectors are so low in loss as to be invisible at 80 meters, yet the added feed makes a huge difference. [The same antenna system is already ~8:1 in the upper 75 meter portion, so I plan to add another few meters of wire to accommodate tree(s) reactivity.] The bottom line for this original poster was to have his external meter at the input (as close as possible) of the tuner. In this way the internal K3 meter will observe the match from K3 to amp (just because stuff happens) and the external tuner will show/confirm that the tuner is making an effective acceptable difference in the SWR and also confirm that the amp is truly putting out the stated power (if the meter includes a power meter). Finally, yes, I wish I understood Smith charts. While it simplifies the complex, it is not simple to fully grasp what it is showing without adequate knowledge. So for those of us that can't read a Smith chart (some just don't care), the SWR is the reading we watch and basically ignore the complexity of what we're really doing with empirical results (it works, so we leave it alone). In my case, understanding the math and formulas is the root of the issue. :-\ 73, Rick wa6nhc -Original Message- From: Fred Jensen Actually, the SWR is constant along a lossless transmission line. It is true that the complex impedance varies in cycles of a half-wave as you move up or down the line. If the line has appreciable loss, the measured SWR will decrease the further you get from the antenna. Many years ago, the ham club at Keesler AFB had a tribander that didn't work, although the SWR was very low on all three bands. We finally discovered that it was very low *everywhere* in or out of the ham bands. Coax was wet inside and was probably the longest dummy load in Harrison County MS. Most SWR indicators and power meters aren't real accurate anyway. With the advent of digital displays, the confusion between accuracy and precision has really increased. The only number that really counts is zero return power. 73, Fred K6DGW - Northern California Contest Club - CU in the 2014 Cal QSO Party 4-5 Oct 2014 - www.cqp.org On 11/13/2013 10:00 AM, Rick Bates wrote: The SWR varies along the feedline (which is why 1/2 wave feed sections are often desired, so you can get an accurate antenna feed point reading). __ 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
Re: [Elecraft] K3: Receive Ant Question
All the antenna configuration diagrams in the K3 manual show a COR on the RX ant input. See pages 41 through 44. 73, Don W3FPR On 11/13/2013 5:43 PM, Brian Alsop wrote: Guys, I thought he said RX antenna input. The COR is on the aux ant input. There is no COR on the RX antenna input (it's not needed, I think.) 73 de Brian/K3KO __ 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: Receive Ant Question
Hi Don, Correct me if I am wrong. The back panel diagram of the K3 shows two BNC's labed RX antenna. I thought the thread originator was referring to this input path for a RX antenna. It's what I use for RX antenna input. I see spark gaps on the inputs on those pages you quote. I don't see a carrier operated relay for the above BNC's. If it is there. I don't see it on the schematics. The relay that is there is to complete the rx/tx circuit when the BNC's are not in use. At least that's what I can glean from the circuit. The aux antenna BNC didn't come till later when the subrx and diversity reception became a reality. It does have a real relay that goes click, click with too much RF. It also has a spark gap protector. 73 de Brian/K3KO On 11/13/2013 22:56, Don Wilhelm wrote: All the antenna configuration diagrams in the K3 manual show a COR on the RX ant input. See pages 41 through 44. 73, Don W3FPR On 11/13/2013 5:43 PM, Brian Alsop wrote: Guys, I thought he said RX antenna input. The COR is on the aux ant input. There is no COR on the RX antenna input (it's not needed, I think.) 73 de Brian/K3KO __ 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: 3222/6333 - Release Date: 11/13/13 - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2242 / Virus Database: 3222/6333 - Release Date: 11/13/13 __ 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] K3: Receive Ant Question
Brian, There is a * next to that spark gap and a note on the diagram which defines the * as a COR. Yes, there also is a spark gap. 73, Don W3FPR On 11/13/2013 6:29 PM, Brian Alsop wrote: Hi Don, Correct me if I am wrong. The back panel diagram of the K3 shows two BNC's labed RX antenna. I thought the thread originator was referring to this input path for a RX antenna. It's what I use for RX antenna input. I see spark gaps on the inputs on those pages you quote. I don't see a carrier operated relay for the above BNC's. If it is there. I don't see it on the schematics. The relay that is there is to complete the rx/tx circuit when the BNC's are not in use. At least that's what I can glean from the circuit. The aux antenna BNC didn't come till later when the subrx and diversity reception became a reality. It does have a real relay that goes click, click with too much RF. It also has a spark gap protector. 73 de Brian/K3KO On 11/13/2013 22:56, Don Wilhelm wrote: All the antenna configuration diagrams in the K3 manual show a COR on the RX ant input. See pages 41 through 44. 73, Don W3FPR On 11/13/2013 5:43 PM, Brian Alsop wrote: Guys, I thought he said RX antenna input. The COR is on the aux ant input. There is no COR on the RX antenna input (it's not needed, I think.) 73 de Brian/K3KO __ 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: 3222/6333 - Release Date: 11/13/13 - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2242 / Virus Database: 3222/6333 - Release Date: 11/13/13 __ 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
Re: [Elecraft] K3/KAT500/KPA500 tuning instructions
That is great! I have his manual - will this be a free update - or will it be something additional to be purchased? If it is an additional cost for me, then I feel that it is upon the manufacturer to step up and clear the air - not a third party doing the work for a profit. Kindly hold the flames. Bill W2BLC K-Line owner __ 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: Receive Ant Question
FB Don, I see the *'s . At first viewing, they look like flyspecks on my printout. Thanks. 73 de Brian/K3KO On 11/13/2013 23:42, Don Wilhelm wrote: Brian, There is a * next to that spark gap and a note on the diagram which defines the * as a COR. Yes, there also is a spark gap. 73, Don W3FPR On 11/13/2013 6:29 PM, Brian Alsop wrote: Hi Don, Correct me if I am wrong. The back panel diagram of the K3 shows two BNC's labed RX antenna. I thought the thread originator was referring to this input path for a RX antenna. It's what I use for RX antenna input. I see spark gaps on the inputs on those pages you quote. I don't see a carrier operated relay for the above BNC's. If it is there. I don't see it on the schematics. The relay that is there is to complete the rx/tx circuit when the BNC's are not in use. At least that's what I can glean from the circuit. The aux antenna BNC didn't come till later when the subrx and diversity reception became a reality. It does have a real relay that goes click, click with too much RF. It also has a spark gap protector. 73 de Brian/K3KO On 11/13/2013 22:56, Don Wilhelm wrote: All the antenna configuration diagrams in the K3 manual show a COR on the RX ant input. See pages 41 through 44. 73, Don W3FPR On 11/13/2013 5:43 PM, Brian Alsop wrote: Guys, I thought he said RX antenna input. The COR is on the aux ant input. There is no COR on the RX antenna input (it's not needed, I think.) 73 de Brian/K3KO __ 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: 3222/6333 - Release Date: 11/13/13 - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2242 / Virus Database: 3222/6333 - Release Date: 11/13/13 __ 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 - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2242 / Virus Database: 3222/6333 - Release Date: 11/13/13 - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2242 / Virus Database: 3222/6333 - Release Date: 11/13/13 __ 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] K3/KAT500/KPA500 tuning instructions
Bill, I -think- this will be another rather complete manual of the same detail level and quality as the one you have for your K3. 73! Ken - K0PP On Thu, Nov 14, 2013 at 12:17 AM, Bill W2BLC w2...@nycap.rr.com wrote: That is great! I have his manual - will this be a free update - or will it be something additional to be purchased? If it is an additional cost for me, then I feel that it is upon the manufacturer to step up and clear the air - not a third party doing the work for a profit. Kindly hold the flames. Bill W2BLC K-Line owner __ 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] Additional: K3/KAT500/KPA500 tuning instructions
Bill, See KE7X.com, upper left side of the front page. 73! Ken - K0PP -- On Thu, Nov 14, 2013 at 12:43 AM, Ken G Kopp kengk...@gmail.com wrote: Bill, I -think- this will be another rather complete manual of the same detail level and quality as the one you have for your K3. 73! Ken - K0PP On Thu, Nov 14, 2013 at 12:17 AM, Bill W2BLC w2...@nycap.rr.com wrote: That is great! I have his manual - will this be a free update - or will it be something additional to be purchased? If it is an additional cost for me, then I feel that it is upon the manufacturer to step up and clear the air - not a third party doing the work for a profit. Kindly hold the flames. Bill W2BLC K-Line owner __ 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] Elecraft] FW: Proper installation of PL 259's
[Thread closed] Sorry for not jumping in earlier. I was off-line quite a bit on other work areas this week. Let's close this thread in the interest of keeping list traffic under control. This one way exceeded the list guidelines posting volume limit. Please self moderate and resist the urge to continually add to long threads. Eric List moderator elecraft.com _..._ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] FW: Proper installation of PL 259's
Guys - Thread closed due to exceeding the max postings per topic limit. Eric List Moderator elecraft.com _..._ On Nov 13, 2013, at 10:42 AM, Charlie T, K3ICH pin...@erols.com wrote: My computer has a very special key that I had custom made for me at great expense. It is labeled DELETE. I find that I use it quite a lot which makes it worth much more than I paid for it Obviously not very many people have ordered this convenient option. I can offer private instruction on how to get the best use of this marvelous added function if that would make things more pleasant for you.. 73, Charlie k3ICH - Original Message - From: WM3M w...@live.com To: b...@wjschmidt.com; elecraft@mailman.qth.net Sent: Wednesday, November 13, 2013 8:46 AM Subject: Re: [Elecraft] FW: Proper installation of PL 259's Yes, Stupid me, I signed up for wrong email list, I thought this was an Elecraft email list? Not a list for cables, connectors, how to solder.. Emory WM3M -Original Message- From: Dr. William J. Schmidt, II Sent: Tuesday, November 12, 2013 10:39 PM To: elecraft@mailman.qth.net Subject: [Elecraft] FW: Proper installation of PL 259's So far I've counted 96 posts on soldering connectors onto coax. Really? 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 Jim Brown Sent: Tuesday, November 12, 2013 3:51 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Proper installation of PL 259's On 11/12/2013 8:42 AM, kd7gc wrote: They are very expensive, some in excess of $100 each, but they have very low loss, and they are sealed well against WX. When I order baluns or switches, I always specify that they must be made with 7/16 DINs, and I have never been disappointed with their performance. I'm trying to understand, Alan, so could you please. define performance, and please tell us in what application, at what frequency, and how you actually KNOW their performance. Unless you're using them in critical small signal applications at UHF, I'd call that a very poor allocation of financial resources. I can think of many better ways to spend $100. The loss through a quality PL259 or N connector is negligible in most real world applications, and there are simple and effective methods of waterproofing them. BTW -- the nicest male N connectors I've found for RG8/213-sized cable are made by Andros Engineering, a machine shop owned by a ham. They're a 2-piece connector, with both center and shield rigidly assembled to the same part to which you solder both center and shield, then screw the outer shell onto it. Very easy to do, and zero possibility of shield migration. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ 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 __ 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] Internal SWR Readings
Guys - please self moderate to limit threads. Except in rare cases, 5-10 replies are more than enough on any thread. Eric List moderator elecraft.com _..._ On Nov 13, 2013, at 2:46 PM, Rick Bates happymooseph...@gmail.com wrote: Please lets not allow this to run as long as the care and feeding of a PL259 connector. :oD I accept what you're all saying, in a perfect world. The originating poster stated that he was running through a tuner, which indicates it's far from perfect. That's fairly common, the other tuner reason is to extend the bandwidth of a given antenna (another conversation). The primary question was Why do they not read the same and the honest answer is: because they aren't looking at the same location(s) in the network. My take (and I'm not high on technical competency here): Since antennas are rarely (a number approaching zero) balanced or perfectly resistive and feedlines are never really lossless (just low enough to be acceptable) and the meters (expecting to see 50 ohms loads) are generally reading voltages (the results of the complex impedance) by various means, the combinations mean that the complex impedances (resistive and reactive at THAT point) are not the same along the entire run of the feed; meaning the meter will read what is at that point. It is inherently inaccurate, but commonly used. One worst case real world example, the G5RV in multi-band operation. It requires a specific feed length (per band) to be efficient because the feed is part of the matching system. End fed or OCF are about as bad (not balanced at all, impedances run wild). In an ideal world, the feed is simply a garden hose (or fire hose for QRO) to deliver signal to/from the antenna. In reality, it's far more complex than that. I submit that if anyone with a non-1:1 SWR antenna were to add a non x/2 wave section of feed (greater than say 5') and re-measure the SWR at the original location (the input to a tuner) it will be different (might be subtle, but it won't be the same). As mentioned by everyone, the actual causes vary, but are repeatable. Case in point: my center fed (80M EDZ) dipole (current length: 104 meters) is very reactive at the low end of 80 meters (22:1) even through a 4:1 common mode choke (balun). If I add a random section of coax (~42') between the balun and the tuner, the SWR at the tuner falls to 8.xx:1 which allows the KAT500/KPA500 to happily pump out all the power available. The coax and connectors are so low in loss as to be invisible at 80 meters, yet the added feed makes a huge difference. [The same antenna system is already ~8:1 in the upper 75 meter portion, so I plan to add another few meters of wire to accommodate tree(s) reactivity.] The bottom line for this original poster was to have his external meter at the input (as close as possible) of the tuner. In this way the internal K3 meter will observe the match from K3 to amp (just because stuff happens) and the external tuner will show/confirm that the tuner is making an effective acceptable difference in the SWR and also confirm that the amp is truly putting out the stated power (if the meter includes a power meter). Finally, yes, I wish I understood Smith charts. While it simplifies the complex, it is not simple to fully grasp what it is showing without adequate knowledge. So for those of us that can't read a Smith chart (some just don't care), the SWR is the reading we watch and basically ignore the complexity of what we're really doing with empirical results (it works, so we leave it alone). In my case, understanding the math and formulas is the root of the issue. :-\ 73, Rick wa6nhc -Original Message- From: Fred Jensen Actually, the SWR is constant along a lossless transmission line. It is true that the complex impedance varies in cycles of a half-wave as you move up or down the line. If the line has appreciable loss, the measured SWR will decrease the further you get from the antenna. Many years ago, the ham club at Keesler AFB had a tribander that didn't work, although the SWR was very low on all three bands. We finally discovered that it was very low *everywhere* in or out of the ham bands. Coax was wet inside and was probably the longest dummy load in Harrison County MS. Most SWR indicators and power meters aren't real accurate anyway. With the advent of digital displays, the confusion between accuracy and precision has really increased. The only number that really counts is zero return power. 73, Fred K6DGW - Northern California Contest Club - CU in the 2014 Cal QSO Party 4-5 Oct 2014 - www.cqp.org On 11/13/2013 10:00 AM, Rick Bates wrote: The SWR varies along the feedline (which is why 1/2 wave feed sections are often desired, so you can get an accurate antenna feed point reading). __ Elecraft
Re: [Elecraft] Elecraft] FW: Proper installation of PL 259's
No need to be sorry, Eric. This was an EXTREMELY interesting and informative thread. The sheer number of responses is a testament to that. Vy 73 de Bert WA2SI Sent from my android device. -Original Message- From: Eric Swartz WA6HHQ - Elecraft e...@elecraft.com To: elecraft@mailman.qth.net Sent: Wed, 13 Nov 2013 20:12 Subject: Re: [Elecraft] Elecraft] FW: Proper installation of PL 259's [Thread closed] Sorry for not jumping in earlier. I was off-line quite a bit on other work areas this week. Let's close this thread in the interest of keeping list traffic under control. This one way exceeded the list guidelines posting volume limit. Please self moderate and resist the urge to continually add to long threads. Eric List moderator elecraft.com _..._ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ 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] FS:KAT500
KAT500-K, # 575, with aux cable, $625 In like new condition. Hardly used. Original owner, nonsmoking environment, Shipping extra, USPS MO, PayPal plus fees. CONUS only, US based hams with US call signs only. NO TRADES! Please contact off list. 73, John N1JM - 73, John N1JM K3 #5986 P3 #1752 KPA500 #596 KAT500 #575 KX3 #926 XG3 XG1 sent from my MacBook Pro -- View this message in context: http://elecraft.365791.n2.nabble.com/FS-KAT500-tp7580857.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
