[Elecraft] MMTTY FSK
Ok so I've never done RTTY via true FSK only audio modes... I have to put in a fence this weekend so I won't be able to play this weekend but I'm trying to get ready for FD... So I've made an interface that consists of a couple opto couplers (one for FSK and one for PTT)... I've got the radio all setup and shorting the FSK_IN pin to GND makes the radio switch tones as it should... However I'm having issues getting MMTTY to open the COM port. I'm using an FTDI based USB-RS232 converter. The MMTTY settings have the USB button right there and they tell me to click on the last 3 options. I've tried all 3 but in all 3 modes I get the unable to open COM3 error... I'm going to be googling and seeing if anyone else has had this issue with me but I figured I'd pose here in the event someone here has already run into this issue. ~Brett (N7MG) __ 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] MMTTY FSK
Iain actually pointed me in the direction of using the EXTFSK .dll interface as the FTDI interfaces don't support any speeds less than 300 bps. EXTFSK uses the media timers to generate the baud rates at slower speeds. Kinda stinks that you've gotta use windows timers as that was the main reason why I had to buy the K1EL keyer because the Windows timing was junk... However the K3 is already ready to rock and roll doing things via AFSK or FSK so I can easily switch between the two methods in the field with no trouble what-so-ever. ~Brett On Fri, 2010-06-11 at 16:56 -0700, Greg wrote: Brett Go into device manager and change the COM number to something unused and other than 3. As you know, many computers reserve or use COM3 in the background for such things as modems. 73 Greg AB7R On 6/11/2010 3:54 PM, Brett Howard wrote: Ok so I've never done RTTY via true FSK only audio modes... I have to put in a fence this weekend so I won't be able to play this weekend but I'm trying to get ready for FD... So I've made an interface that consists of a couple opto couplers (one for FSK and one for PTT)... I've got the radio all setup and shorting the FSK_IN pin to GND makes the radio switch tones as it should... However I'm having issues getting MMTTY to open the COM port. I'm using an FTDI based USB-RS232 converter. The MMTTY settings have the USB button right there and they tell me to click on the last 3 options. I've tried all 3 but in all 3 modes I get the unable to open COM3 error... I'm going to be googling and seeing if anyone else has had this issue with me but I figured I'd pose here in the event someone here has already run into this issue. ~Brett (N7MG) __ 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] MMTTY FSK
I'm one of those guys that is a glutton for punishment... To me the fact that FSK is more complicated and I've not done it before is the actual advantage. I do see FSK as a method that is slightly less prone to TX distortions. I built my interface using opto couplers and then put in a few jumpers to allow for several grounding situations. Turned out that 100% disconnect between all grounds is working very well. ~Brett (N7MG) On Fri, 2010-06-11 at 19:28 -0400, Mike wrote: When I got my K3, I was hot to get it set up on FSK. Somebody here convinced me to try AFSK, and I was blown away by how simple it is, and less complicated to set up. AFAICT, FSK offers no advantage. 73, Mike NF4L Brett Howard wrote: Ok so I've never done RTTY via true FSK only audio modes... I have to put in a fence this weekend so I won't be able to play this weekend but I'm trying to get ready for FD... So I've made an interface that consists of a couple opto couplers (one for FSK and one for PTT)... I've got the radio all setup and shorting the FSK_IN pin to GND makes the radio switch tones as it should... However I'm having issues getting MMTTY to open the COM port. I'm using an FTDI based USB-RS232 converter. The MMTTY settings have the USB button right there and they tell me to click on the last 3 options. I've tried all 3 but in all 3 modes I get the unable to open COM3 error... I'm going to be googling and seeing if anyone else has had this issue with me but I figured I'd pose here in the event someone here has already run into this issue. ~Brett (N7MG) __ 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] MMTTY FSK
Its not more difficult just more fun cause I got to pull out the screwdriver and soldering iron. That and it was harder for me cause that method I'd not used before. I like using fsk and made a few contacts with it last night so I can now say Ive make both ways work successfully. ~Brett (N7MG) On Jun 12, 2010 5:14 AM, Bob Naumann w...@w5ov.com wrote: Where did the idea that FSK is more difficult come from? FSK requires no setting of transmit audio levels or concerns about sound card settings - for transmission. To me, this cuts the difficulty in half. Using a RigExpert or MicroHam (or their equivalent) Interface it's basically automatic and requires no fiddling with levels. 100% FSK RTTY here. Zero problems. 73, Bob W5OV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman __ 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 Beta Firmware Rev. 4.03: CW+ mode (Ultra-fast break-in; VOX-CW up to 100 WPM)
I tried it over the weekend when the RTTY contest was going on and used FSK for the first time... Was able to get a few to come back to me then had to rush back out and get back to work on the fence... ~Brett (N7MG) On Mon, 2010-06-14 at 15:45 -0700, Julian, G4ILO wrote: Has anyone tried the built-in RTTY? When I tried it, I could copy other stations perfectly but no-one would come back to me. Eventually I set up another receiver to see if I could copy it and I found I had to reverse the sideband before I could decode the text. __ 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] K3: REF IN
This is very interesting! I'd not heard about this board but I did see all the extra connection holes in the K144XV shield! I'm very interested to get the feature to be able to use the subRX on 2M while the main is not! This is one of the things I was hoping to be able to do with the unit. Should allow me to wait for a sked or even monitor a repeater if need be while scanning around on other HF bands... ~Brett (N7MG) On Sat, Dec 5, 2009 at 2:55 AM, Jan Holmer SM6TUW sm6...@gmail.com wrote: There will be a choice according to Wayne: We have made provisions for this on an optional daughter board that plugs into the main K144XV module. This option board will have at least three features: (1) sub receiver AUX RF patch (to let the sub RX receive on 2 m even if the main RX is on a different band); (2) 144 MHz low-level I/O (for higher-band transverters); (3) a PLL to lock the K144XV's crystal oscillator to the K3's 49.38 MHz reference oscillator. This option will be available somewhat later than the K144XV itself, and the price has not yet been set. It will be very easy to install. I am looking forward to have more info about that option! 73 Jan AD6XY wrote: The KX144 can not be locked to the reference, it uses a different LO. If it were based on the reference oscillator we would not be hearing of crystal supply problems. -- View this message in context: http://n2.nabble.com/K3-REF-IN-tp4105110p4117002.html Sent from the [K3] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Seperate Rx Antenna
When you say that it didn't work what did it do? If you have an RX_ANT_IN on the back of your K3 then you do have the KXV3 or KXV3A installed in your radio. When you pressed the button did you get an RX on the display? Also make sure that you have enabled the KXV3 in the config menu. If you've used it before then you've probably already done this... ~Brett (N7MG) On Mon, Jun 14, 2010 at 2:15 PM, Don Ehrlich ehrl...@clallambroadband.com wrote: My K3 has no KRX3 subreceiver and no KXV3 transverter and I want to use a seperate receive-only antenna for general HF operation. Today I tried to use the RX-IN for the seperate antenna, switching to the seperate antenna for receive-only by pressing the RX ANT button on the K3, and found that it did not work. So I read the manual and discover that use of a seperate receive antenna in this way is possible only when a KXV3 is installed and is only for use with the KXV3. Am I reading the manual correctly? I clearly remember having done this before successfully on HF bands with my stock K3 and still have the BNC-S0239 adapter that I used before to connect my receive-only antenna to the RX-IN BNC connector on the back of the K3. The only antenna-related change in the K3 since that time is the installation of the autotuner. Please don't tell me my memory is wrong. I'm too young to face the possibility of having become delusional. Don K7FJ __ 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 FSK Interface the clean way...
Ok so I just got an idea on how to make my FSK interface cleaner... I ended up with something very similar to the W3YY interface on my first attempt. You can see their interface here: http://www.w3yy.com/fsk.htm Anyway I had a box and two cables coming out of it with a DB9 on one and a DB15 on the other (I didn't bother with the 3.5mm connector for CW as I use a K1EL for that)... Anyway I just came across one of these laying around in my office: http://www.ftdichip.com/Documents/DataSheets/Modules/DS_TTL-232R_PCB_V100.pdf They were giving these away to showcase their chip and get people to design them into products. I'm thinking I'm going to grab a USB cable that we have laying around and cut it. Then desolder the USB connector on this board and solder the cable into place there. Then solder some SMT optocouplers onto the pads on the end of the board and run wires up to a DB15. I should if I'm careful be able to fit the whole mess into the shell behind the DB15. Then one could have a K3 FSK adapter that just looks like a USB cable with a DB15 on one end. Well at least thats the goal and heck as simple as it all is I'm sure its going to work. I'll post pics when she's done. ~Brett (N7MG) __ 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] KTCXO3-1
So you bought the TCXO because you wanted to be able to say that it was further temperature compensated by firmware? Because what was promised was that it would get to 0.5PPM via additional firmware correction. Well it turns out that the oscillators already do that out of the box. Thus implementing even further enhancement got moved very low on the list because people were already receiving that which they were promised. At the moment there are MANY things that the P3 will be able to do that are yet to be promised. You can easily tell by looking at the back of one at a hamfest. There is a VGA connector port, a USB Keyboard port, and a port to accept a W2 sensor... Think of all the possibilities that can come from this. Not to mention.. Think of all the features that have come to the K3 that weren't promised! I'd hope that you purchased the TCXO so that you could have 0.5PPM rather than 5PPM accuracy on your reference You can be comforted if that is the case as you are actually getting exactly what you paid for. ~Brett (N7MG) On Thu, Jun 17, 2010 at 8:46 AM, Radio Amateur N5GE n...@n5ge.com wrote: On Wed, 16 Jun 2010 16:07:58 -0700 (PDT), Leigh L. Klotz Jr WA5ZNU le...@wa5znu.org wrote: Yes, that is true, but the rest of the advertisement that led to the sale of them (the auto temperature correction) has not been implemented. Which concerns me and others that bought them. That's one of the reasons I won't buy a P3 or any other major products until they have been shipping next day for at least a year and advertised functionality is complete. Don't get me wrong, I love my K3's but it would be nice if they had every feature advertised when I acquired them. Tom, N5GE K3 #806 with SUB RX, PR6, KRC2 and K144XV K3 #1055 with PR6 and XV432 W1, 2 W2's and other small kits QCWA Life Member 35102 n...@n5ge.com http://www.n5ge.com http://www.swotrc.net I'm not a guru, but the TCXO is already implemented. The fraction-ppm performance that might be gained by using some software isn't there, but the TCXO itself is already more stable than the basic option. Leigh/WA5ZNU __ 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] KTCXO3-1
You can input the information via the K3 utility. It is then stored in the radio... ~Brett On Jun 17, 2010 1:16 PM, David Ferrington, M0XDF m0...@alphadene.co.uk wrote: I would like to be able to calibrate it according the manual and Method 3 73 de M0XDF -- Sometimes I wonder whether the world is being run by smart people who are putting us on or by imbeciles who really mean it. -Mark Twain, author and humorist (1835-1910) On 17 Jun 2010, at 19:37, Brett Howard wrote: So you bought the TCXO because you wanted to be able to say that it was further temperature compensated by firmware? Because what was promised was that it would get to 0.5PPM via additional firmware correction. Well it turns out that the oscillators already do that out of the box. Thus implementing even further enhancement got moved very low on the list because people were already receiving that which they were promised. At the moment there are MANY things that the P3 will be able to do that are yet to be promised. You can easily tell by looking at the back of one at a hamfest. There is a VGA connector port, a USB Keyboard port, and a port to accept a W2 sensor... Think of all the possibilities that can come from this. Not to mention.. Think of all the features that have come to the K3 that weren't promised! I'd hope that you purchased the TCXO so that you could have 0.5PPM rather than 5PPM accuracy on your reference You can be comforted if that is the case as you are actually getting exactly what you paid for. ~Brett (N7MG) __ 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] LDG
Actually the K3 can sell a LOT less than 100Million and be on par with the number of IKY's sold. While Elecraft is a Ham Radio only organization IKY make a lot of money selling communications products to completely unrelated sectors. ~Brett On Thu, Jun 17, 2010 at 12:32 PM, w...@w5ov.com wrote: You can't argue with the numbers. And while Eric and company would like to be a $100 million company, I think they have some way to go to reach that level. The reason you run into others with the K3 is that you are here in the U.S. and many of those folks are like-minded with you and I, looking for the best performing radio available. Remember, there are a lot of people who are not even aware of the K3 and only consider I/Y/K radios. None of what I said in any way should be construed to be negative about the K3 - it's just that the number of them sold in no way compares to what Icom and Yaesu (and Kenwood) sell world-wide. $100 million in K3 terms = about 25,000 of them annually. We all know that there are not even close to 25,000 K3's out there. As further evidence of my personal perspective, my K3 occupies the spot where my 756Pro3 used to be and I have no regrets. In fact, I just used it for the first time on 6m last weekend in the VHF test and it worked very well - even without the optional preamp on 6m. 73, Bob W5OV First off my K3/10 is what most consider QRP. I use a used MFJ-945E tuner on 80-6m (also used when I ran my FT-847 on HF). Supposedly rated to 300w (?) but I do not have anything that runs that high built. But, mainly, I want to respond to the K3 types are devoted and loyal, we're just a drop in the bucket of the world-wide amateur market statement. Really? Then why do I run into all these K3 owners on the many e-mail reflectors, I inhabit? I can say the K3 is very well though of and gaining popularity with the VHF+, EME, and microwave crowd! To say they are in the lead for ultimate weak-signal operations, and the K3 is considered one of the best (if not the best) for that. and that is why I own one. 73, Ed - KL7uW hint uW = microwave -- Message: 43 Date: Thu, 17 Jun 2010 08:14:31 -0500 From: Bob Naumann w...@w5ov.com Subject: Re: [Elecraft] LDG To: Elecraft@mailman.qth.net Message-ID: 013701cb0e1f$05dd5f00$11981d...@com Content-Type: text/plain; charset=US-ASCII For a moment, consider that what the LDG rep says may be true. I suspect that it is, given the incredible advertising promotional budgets that Icom and Yaesu apparently have from sales of their products. While Elecraft is clearly doing well and they're growing, it is also clear that these long-standing manufacturers (I,Y) are selling lots more radios. A quick Internet search shows that it is estimated that Icom USA (Note: This is USA only) has sales revenues on a yearly basis of between $50 million and $100 million. Then, add whatever Icom is doing in the rest of the world, and you begin to get the picture of how big these companies are in comparison. What this tells us is that while us K3 types are devoted and loyal, we're just a drop in the bucket of the world-wide amateur market compared to the big two. (Kenwood doesn't count until they come out with a real radio - then it once again may be the 'big 3'). 73, W5OV 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 144-600w, 432-100w, 1296-60w, 3400-fall 2010 DUBUS Magazine USA Rep dubus...@hotmail.com == __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Heil Goldline on K3
Yep just get the Kenwood adapter cable and it'll plug right in and work like a champ! ~Brett (N7MG) On Thu, Jun 17, 2010 at 1:55 PM, Robert Mitilieri rc...@yahoo.com wrote: Has anyone used a Heil Goldline mic with a K3? I would like to use the Heil with my soon-to-arrive K3. It works great with my soon-to-be-replaced Drake TR7A. I was just wondering whether I should invest in another adapter cable. Robert N9EF __ 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] KTCXO3-1
You said you wanted to be able to calibrate it via the data that came with the device. You can calibrate it by inputting the data to the radio and you will get the 0.5PPM accuracy you were promised. Does that mean that the data is used? No. But you CAN input it and you WILL get the accuracy you paid for. ~Brett (N7MG) On Thu, Jun 17, 2010 at 2:10 PM, David Ferrington, M0XDF m0...@alphadene.co.uk wrote: Is it then used - I thought I saw a post saying you can input it, but it's not used. And I wonder if that works in the OSX version ? 73 de M0XDF -- As a well spent day brings happy sleep, so life well used brings happy death. -Leonardo da Vinci, painter, engineer, musician, and scientist (1452-1519) On 17 Jun 2010, at 21:46, Brett Howard wrote: You can input the information via the K3 utility. It is then stored in the radio... ~Brett On Jun 17, 2010 1:16 PM, David Ferrington, M0XDF m0...@alphadene.co.uk wrote: I would like to be able to calibrate it according the manual and Method 3 73 de M0XDF -- Sometimes I wonder whether the world is being run by smart people who are putting us on or by imbeciles who really mean it. -Mark Twain, author and humorist (1835-1910) On 17 Jun 2010, at 19:37, Brett Howard wrote: So you bought the TCXO because you wanted to be able to say that it was further temperature compensated by firmware? Because what was promised was that it would get to 0.5PPM via additional firmware correction. Well it turns out that the oscillators already do that out of the box. Thus implementing even further enhancement got moved very low on the list because people were already receiving that which they were promised. At the moment there are MANY things that the P3 will be able to do that are yet to be promised. You can easily tell by looking at the back of one at a hamfest. There is a VGA connector port, a USB Keyboard port, and a port to accept a W2 sensor... Think of all the possibilities that can come from this. Not to mention.. Think of all the features that have come to the K3 that weren't promised! I'd hope that you purchased the TCXO so that you could have 0.5PPM rather than 5PPM accuracy on your reference You can be comforted if that is the case as you are actually getting exactly what you paid for. ~Brett (N7MG) __ 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] KTCXO3-1
Thats a feature. No matter what you enter you'll always get the 0.5PPM that you paid for. ;) ~Brett On Thu, Jun 17, 2010 at 2:27 PM, Grant Youngman n...@tx.rr.com wrote: The current OS X version of Utility does not have the feature. YOu have to use the Win(doze) version. The RADIO -- you know, the K3 -- does not support Mode 3 calibration. You can key anything in there you like -- your mom's birthday, lucky numbers, the angular momentum of Uranus, or even the data sheet from Elecraft. It won't matter, and won't affect the radio calibration accuracy. Grant/NQ5T On Jun 17, 2010, at 4:10 PM, David Ferrington, M0XDF wrote: Is it then used - I thought I saw a post saying you can input it, but it's not used. And I wonder if that works in the OSX version ?nate.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] KTCXO3-1
Understood. That makes a lot more sense. I'd bet you probably did better than you think but I understand the FUD (Fear, Uncertainty, and/or Doubt) that you may have messed it up. Perhaps you could borrow a MFJ259B from a local club or elmer to get the job done. I used the zero beat function and then later brought home my Agilent MSO6104 scope (as they have hardware frequency counters in them) and found that I was only off by a few Hz. Honestly the main thing is that when you call some one they answer you. In certain modes that can become a much more difficult task but I think if you were running into that issue you'd know... ~Brett (N7MG) On Thu, Jun 17, 2010 at 2:37 PM, David Ferrington, M0XDF m0...@alphadene.co.uk wrote: Brett, I think after all this time, I may have misunderstood the Reference Oscillator calibration instructions. I had always read the following: Reference Oscillator The K3’s reference oscillator is a TCXO, or temperature-compensated crystal oscillator. It is normally calibrated at assembly time or by the factory. There are two types: 5 ppm and 1 ppm. Either TCXO can be calibrated using an accurate frequency counter (Method 1), or by zero-beating the sidetone against a reference signal (Method 2). Accuracy of the 1 ppm TCXO can be improved by entering the supplied calibration data (Method 3). Be sure to keep the data sheet that was supplied with the oscillator. As meaning there were 3 methods of calibrating the frequency, but now I think there are only 2 ways to calibrate it, plus the possibility of improving the stability (method 3). I'm happy that it's very stable, but not sure I did a good job on the frequency. I don't have a frequency counter and did the best I could to zero-beat it. so thanks for your comments, they have helped me understand this better. 73 de M0XDF -- It is not how old you are, but how you are old. -Jules Renard, writer (1864-1910) On 17 Jun 2010, at 22:13, Brett Howard wrote: You said you wanted to be able to calibrate it via the data that came with the device. You can calibrate it by inputting the data to the radio and you will get the 0.5PPM accuracy you were promised. Does that mean that the data is used? No. But you CAN input it and you WILL get the accuracy you paid for. ~Brett (N7MG) On Thu, Jun 17, 2010 at 2:10 PM, David Ferrington, M0XDF m0...@alphadene.co.uk wrote: Is it then used - I thought I saw a post saying you can input it, but it's not used. And I wonder if that works in the OSX version ? 73 de M0XDF -- As a well spent day brings happy sleep, so life well used brings happy death. -Leonardo da Vinci, painter, engineer, musician, and scientist (1452-1519) On 17 Jun 2010, at 21:46, Brett Howard wrote: You can input the information via the K3 utility. It is then stored in the radio... ~Brett On Jun 17, 2010 1:16 PM, David Ferrington, M0XDF m0...@alphadene.co.uk wrote: I would like to be able to calibrate it according the manual and Method 3 73 de M0XDF -- Sometimes I wonder whether the world is being run by smart people who are putting us on or by imbeciles who really mean it. -Mark Twain, author and humorist (1835-1910) On 17 Jun 2010, at 19:37, Brett Howard wrote: So you bought the TCXO because you wanted to be able to say that it was further temperature compensated by firmware? Because what was promised was that it would get to 0.5PPM via additional firmware correction. Well it turns out that the oscillators already do that out of the box. Thus implementing even further enhancement got moved very low on the list because people were already receiving that which they were promised. At the moment there are MANY things that the P3 will be able to do that are yet to be promised. You can easily tell by looking at the back of one at a hamfest. There is a VGA connector port, a USB Keyboard port, and a port to accept a W2 sensor... Think of all the possibilities that can come from this. Not to mention.. Think of all the features that have come to the K3 that weren't promised! I'd hope that you purchased the TCXO so that you could have 0.5PPM rather than 5PPM accuracy on your reference You can be comforted if that is the case as you are actually getting exactly what you paid for. ~Brett (N7MG) __ 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] LDG
I had the pleasure of helping out at the Elecraft booth at SeaPac recently and I also took a bit of time to go and listen to how Icom's booth was going... The Icom booth guys seemed to be marketing guys who don't really do a lot of ham stuff. The Elecraft booth was being assisted by customers who were excited about the product enough to want to help out. Then finally the BIGGEST difference between the Icom, Kenwood booth and the Elecraft booth. People continually came up to us to tell us about their radios and how much they loved them. But the biggest piece of uniqueness is that every person I talked to could tell me their serial number off the top of their head. How many who own a IKY can state their serial number off the top of their head? Do I have some fun stories and did I have a lot of fun with my TS-450Sat? Hell yes. Do I feel the connection to that radio that I do my K3? Meh not even close. Its a different animal. Elecraft does a great job focusing on just our segment of the market and IKY generally sees the Amateur Radio market as a fairly small portion of its total revenue and applies attention to those customers accordingly. Thus I do feel like IKY spends time listening to and responding to Amateur Radio customers! But they've got other customers with a lot more money under their control that take president. ~Brett (N7MG) On Thu, 2010-06-17 at 19:49 -0700, Fred Jensen wrote: Bob Naumann wrote: What this tells us is that while us K3 types are devoted and loyal, we're just a drop in the bucket of the world-wide amateur market compared to the big two. (Kenwood doesn't count until they come out with a real radio - then it once again may be the 'big 3'). Actually, I don't think it tells us this at all. I/Y/K manufacture and sell a huge range of electronic products, not all radios in the usual sense, and most of ones that are radios are for non-ham users. They are all very large international companies, and no fooling, they make good ham radios, no question. Elecraft on the other hand, sells ham radio products only -- and very good ones that compete with the specs of the others so well as to win in most categories. Coupled with the issues of support, upgrade, and cost, E-radios are probably at the top of the heap for many reasons. My KX1 is #697 [I think]. K2 is #4398. K3 is #642, but it has a couple of hardware mods and is running FW Ver 4.03 as I type this, pretty much up to date as of 17 Jun 2010. I have yet to see an update for my FT-847 [which I like and use on UHF/VHF]. Actually, I don't think Yaesu even knows I'm one of their customers, but Elecraft does. We need to be very careful how we compare radios and companies who make them. 73, Fred K6DGW - Northern California Contest Club - CU in the 2010 Cal QSO Party 2-3 Oct 2010 - 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 __ 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] tx gain calibration
No you're just able to have the dummy load on either port when you do so. ~Brett (N7MG) On Fri, 2010-06-18 at 20:35 -0400, Gary Lee wrote: Must I do this for each antenna port? __ 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 ref osc calibration question
Perfect! The higher the frequency you use the better! ~Brett (N7MG) On Fri, 2010-06-18 at 21:12 -0400, Andrew Moore wrote: I ended up using WWV at 20.0 MHz. Works great. Problem was that the freq must really be known -- i.e. the XG2 won't cut it, unless I know its exact frequency... Thanks all On Fri, Jun 18, 2010 at 8:56 PM, Andrew Moore andrew.n...@gmail.com wrote: I'm performing a calibration on my K3's TXCO (5 ppm version). K3 is new/recent build, serial 44xx K3 owner's manual, Rev. L, page 49. Method 2 (zero-beating) I'm using an Elecraft XG2 signal generator at roughly 14.060 MHz Procedure says to enter CW mode and tune to the specified frequency (in this case, I don't know it, as every XG2 is probably a little different) Since I don't know the exact frequency, can I spot it with the Spot function, and then proceed to the REF CAL adjustment? Or is there a catch 22 here, as the spot function may not be accurate until the TXCO is calibrated? --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 __ 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] FS: K3/100 with many options
So why exactly are you selling a K3 to buy a K3? Is it just that you didn't build this one and you want one that you built? ~Brett (N7MG) On Sat, 2010-06-19 at 13:58 -0400, NZ8J wrote: I have a K3/100 (serial no. 2255) with many options I would like to sell. It has the following options built in: Second RX Antenna tuner Voice recorder TCXO IF out module (KXV3) 1.8 kHz filter 500 hz filter 250 hz filter 200 hz filter MH-2 hand mic All manuals and power cord Not interested in trades, only selling to buy a new kit version K3/100 to build. I did some trading for this and seeing all the new products on the horizon I decided to start new and build up a complete Elecraft station, eventually the P3 and 500 watt amp as well. It looks excellent and works perfect. Always in a non smoking environment. Will ship and insure it in the US for $2895. US postal money order preferred. Please reply direct to n...@woh.rr.com for more information. I ca nsend pics if necessary. Thanks Tim NZ8J __ 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] No Audio from speakers after FW 3.97 upgrade K3
Do you have mono plugs on any of your speakers? ~Brett (N7MG) On Sat, 2010-06-19 at 11:13 -0700, K3PIN wrote: I just upgraded the firmware in my k3(#2453) and now there's no audio from the internal speaker or the external speaker I have. I can get sound from the phone outputs. I think the FW upgrade fried my audio somehow. needless to say I'm pissed off! I aslo had another RF/SQl knob crack on me! maybe it is time to trash the k3 and go with a Flex 5000! Anyone else have a simular audio problem or any suggestions besides emailing and calling Elecraft which I already did. Steve-K3PIN __ 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] Band specific PTT outputs from the K3
Huh... I'd have never thought to use a PIC for something like this... I swear one of these days I really should look into PICs but I've always been the type to solve things with programmable logic or to go all the way to an ARM based solution. Recently did a project where cost was king and was able to get 3 UARTs, Full speed USB, all the required timers and PWM controllers, along with 2 SPI channels all into a sub 2 dollar coretex M3 part that would run at 72Mhz (however you had to run it at 48Mhz to get USB to work right) This project could have been doing really quick and simple also with a little GAL16V8 with probably a lot less code. But still a fun project, great job! Always great to see people adding in their own little project nuggets to get what they need done. ~Brett (N7MG) On Mon, 2010-06-21 at 00:44 -0500, David Robinson wrote: After suffering the lack of separate HF PTT, 6m PTT, 144 PTT and 432 MHZ PTT from my K3 since I bought it I finally spent the time to do something about it. I have developed a PIC based unit that decodes the current K3 band data signals to provide these outputs. More information at http://g4fre.com/K3_PTT_sw.htm Dave ww2r __ 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 Vox settings per mode
Hold down DATA MD and make sure that you are in a AFSK mode. ~Brett (N7MG) On Mon, 2010-06-21 at 20:01 -0700, Brandon673 wrote: Is there something I'm missing? I am unable to setup my K3 to use VOX anytime its in digital mode without it changing my SSB modes also over to VOX. I only use VOX for Digital Modes and never use it for SSB/FM/AM. Does anyone else have this issue or know if there is a fix for it? Is this a firmware issue? __ 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 Vox settings per mode
I'd have to go check but I'm pretty sure that VOX is remembered per band/per mode so you just have to set it that way and it should remember it. ~Brett (N7MG) On Mon, 2010-06-21 at 20:36 -0700, Brandon673 wrote: So no solution? I want VOX to be on no matter what band im on when i select Data Mode. Anytime I change out of Data mode I want VOX to be off. Otherwise when I switch from doing digital modes i occasionally forget to turn VOX off and i go into TX. Brandon On Jun 21, 2010, at 8:32 PM, Joe Subich, W4TV-4 [via Elecraft] wrote: Is there something I'm missing? I am unable to setup my K3 to use VOX anytime its in digital mode without it changing my SSB modes also over to VOX. That's the way the K3 operates. There are two mode groups; CW/FSK D/PSK D and SSB/AM/FM/DATA A/AFSK A. Note the A in DATA A and AFSK A ... that indicates Audio where the D in FSK D/PSK D indicates direct as in direct keying. VOX applies to the Audio group as a whole. 73, ... Joe, W4TV On 6/21/2010 11:01 PM, Brandon673 wrote: Is there something I'm missing? I am unable to setup my K3 to use VOX anytime its in digital mode without it changing my SSB modes also over to VOX. I only use VOX for Digital Modes and never use it for SSB/FM/AM. Does anyone else have this issue or know if there is a fix for it? Is this a firmware issue? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html View message @ http://elecraft.365791.n2.nabble.com/K3-Vox-settings-per-mode-tp5207116p5207162.html To unsubscribe from K3 Vox settings per mode, click here. __ 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] Help finding an RF adapter
I need to find an adapter to allow me to use a really low loss cable that I have... The cable has one male and one female RP-TNC connector and I need to get PL259 (UHF) connectors. So I need male-RP-TNC-UHF and female-RP-TNC-UHF adapters from a place that can 2nd day air ship... I'm hoping to just find 1 adapter to get the job done but I may have to go to N and then from N to UHF... But I'm looking at feeding 100ft to a 43foot vertical and using the tuner in the shack (hopefully I can use the K3 built in tuner but I'll have a spare external just in case)... But anyway this coax run that I have was given to me and its a very low loss 100 foot run for 2.4Ghz use so for 30Mhz use it'll be helpful for the reflected power that the tuner helps send back which is going to see my run as a 300 foot run of this stuff... I figure even with a little extra adapter loss the ultra low loss coax will still be a help as its the brunt of the loss in the system. ~Brett (N7MG) __ 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] Coax Loss Figures
I'm trying to find the specs on this chunk of coax that has the RP-TNC connectors on it... I'm not having a lot of luck but perhaps someone is more familar with it than I... Its just says Amphenol TWO 6001 9G Then the box just says its a Cisco Systems Ultra Low Loss Coax Assembly... And being Cisco is why I get the joy of dealing with the RP-TNC... ;) But hey the whole thing was free! ~Brett __ 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] Coax Loss Figures
I think I found a sheet that says its LMR600 or at least its in a grouping that makes me think it might be LMR600. OD on the stuff is .591 by my measurements. From my calculation a 5:1 mismatch on 100 feet of LMR-400 would still get me 75watts out the antenna at 30Mhz and things only get better as I head down into 20 and 40 meters. ~Brett (N7MG) On Tue, 2010-06-22 at 20:51 -0700, Wes Stewart wrote: loss is meaningless. What is the diameter? I've been out of the industry for some time, but as I recall Amphenol didn't make bulk cable, so they likely bought the cable from Belden, Times, etc and built a cable assembly for Cisco. I think your original premise is flawed. If you want to move the match point of a 43' vertical 100' into your shack you probably should be looking for some 7/8 Helix. __ 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] Coax Loss Figures
I know I'm about to sound completely nuts to everyone but I'm just doing all this stuff for FD... ;) I'll probably end up using the 100' or 50' chunk of LMR400 that I have laying around here depending on how far away the antenna has to be from the tent... Being that I'm going to be running 40 radials (and don't want to staple it down) I'm going to need to keep it away from where people will be walking. I've also got 2 other wire antennas that are proven and we know are going to work well... But I always like trying stuff that I've never done before for FD. I know we're not going to be winning any awards but I've got trees freakin everywhere and I'm going to probably have 4 antennas hooked to the K3 two RX only and two TX/RX... I've never been to the location where its held this year and so thats new for me too. I just try to have fun, make sure I get a few good bites of the potluck, and get to play with more antennas and better antennas than I'll ever have at my current home. Later I'll have a better setup but for now FD is my biggest play date w/ Ham Radio every year... These are where I get to try stupid things and find out what does and doesn't work. ~Brett (N7MG) ~Brett (N7MG) On Tue, 2010-06-22 at 21:10 -0700, Phil Kane wrote: On that basis, see if you can get some 75 ohm hardline from your local cable company - they are pulling it all out in favor of fiber optic cable and throwing it away unless the local hams ask for it. We have several hams here who use that to go up 70-100 foot towers and get out very well despite the apparent mismatch. __ 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] Coax Loss Figures
Thats another really great data point! Knowing Cisco getting the word ultra printed on the box cost a good chunk of extra change! ;) Well heck if LMR400 is .7dB/100ft I'm not so sure that its worth mucking with finding adapters for it as if I end up having to put 2 adapters on each end to get it to something I can use there goes most of my advantage of stepping up from LMR400 to LMR600... ~Brett On Tue, 2010-06-22 at 22:19 -0600, Bob Cunnings wrote: In Cisco parlance, Low Loss and Ultra Low Loss refers to classes of Aironet coax cable assemblies. On this data sheet: http://tinyurl.com/yr8fck we find these described in Table 8. If you indeed have part nbr AIR-CAB100ULL-R (where the ULL means Ultra Low Loss) then the attenuation is specified as 4.4 dB per 100 ft at 2.4 GHz. This puts it in the LMR600 class, 0.5 dB attenuation per 100 ft at 30 MHz. Bob NW8L On Tue, Jun 22, 2010 at 9:16 PM, Brett Howard br...@livecomputers.com wrote: I'm trying to find the specs on this chunk of coax that has the RP-TNC connectors on it... I'm not having a lot of luck but perhaps someone is more familar with it than I... Its just says Amphenol TWO 6001 9G Then the box just says its a Cisco Systems Ultra Low Loss Coax Assembly... And being Cisco is why I get the joy of dealing with the RP-TNC... ;) But hey the whole thing was free! ~Brett __ 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] Coax Loss Figures
Yea I know I'm going way overkill and I was doing all the calculations by hand of total loss and at a 7:1 SWR (which is entirely possible on this 43 ft vertical) the loss at 30Mhz can get kinda ugly... I've not modeled it fully but on all bands but on 20 meters its 7:1 and on 40 meters its 3:1... I think I'm just going to call it a day and use the LMR400... But its fun to overthink this stuff... Article looks nice I can see I'm going to be up for a few more minutes! ;) ~Brett (N7MG) On Tue, 2010-06-22 at 23:34 -0700, Jim Brown wrote: Check out http://audiosystemsgroup.com/Coax-Stubs.pdf 100 ft of almost any decent RG8-size or RG11-size coax is just fine for a Field Day antenna on the HF bands. On the lower HF bands, RG8X-size coax is just fine. 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
Re: [Elecraft] Coax Loss Figures
I was starting to look at connectors when comparing getting adapters to use the LMR600 that I have to that of using LMR400 that I have with the right connectors on it already... From what I've seen in other models I'm expecting 7:1 SWR on 20 and 3:1 SWR on 40 with the 4:1 UNUN that DX recommends to help make things tune easier. When Elecraft makes me a remotable tuner that will work with my setup then I'm game... Till then I'll suffice with the tuner thats built into the radio. It should be able to handle most of what I should see with that 4:1UNUN on there and its capability of tuning things w/in 10:1... I'm not holding my breath for using it on 80Meters but we'll see what the tuner can handle... I plan on setting things up on Friday and taking my notebook and collecting a bunch of data on it to see how things shake out... I'm not expecting magic I'm just trying to get my head around all the math and get an idea of what I should expect so I know when to be surprised and ask questions when reality doesn't match theory... ;) ~Brett (N7MG) On Wed, 2010-06-23 at 03:15 -0400, Tom W8JI wrote: Well heck if LMR400 is .7dB/100ft I'm not so sure that its worth mucking with finding adapters for it as if I end up having to put 2 adapters on each end to get it to something I can use there goes most of my advantage of stepping up from LMR400 to LMR600... The loss in connectors or adaptors at HF or even up into VHF is virtually immeasurable, unless they are simply terrible. If the connectors are terrible you might have 0.05 dB loss. A common SO-239/PL259 junction has less than .02 dB loss at upper HF. I'd be more concerned with transmission line losses due to SWR on the transmission line and voltage breakdown of connectors in your application. Here are the peak voltages at the antenna base with only 100 watts applied at the antenna, and the losses in a feedline using 100 feet of LMR500: 160= 4800v (100:1 SWR) 16 dB feedline loss 80 = 1000v (100:1 SWR) 6 dB feedline loss 40 = 215v (5.4:1 SWR) .6 dB feedline loss 30 = 500v (26:1 SWR) 3 dB feedline loss 20 = 540v (29:1 SWR) 3.5 dB feedline loss 15 = 280v (9:1 SWR) 1.7 dB feedline loss Why would you worry about connectors when 100 feet of LMR500 would have losses like that? Put a tuner at the antenna base if you want to reduce losses. 73 Tom __ 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] Coax Loss Figures
Its called field day and I'm trying to get some of the best stuff I can... I'm having fun with it and learning more all the time. Why not help people setup their own experiences and enjoy the hobby rather than telling them that they are simply doing it wrong. If you were stuck in the woods and all you had was two pieces of wire and a K3 would you use the two together and save your life or would you never connect the two because you don't have any expensive feedline and die there? Personally I spent the money on my radio cause I was allowed to build it and learn from it. I also get better support. True diversity with equal quality receivers as I plan on using the vertical with diversity RX. I also get a UI that I am familue with and find inruitive. Last I checked using LMR400 or LMR600 for a 100 watt FD station is at least someone making an attempt. This is a hobby guys. I'm just trying to enjoy it... ~Brett. (N7MG) On Jun 23, 2010 4:21 AM, Samuel Strongin kf4...@embarqmail.com wrote: Let me see spend $4000.00 on a radio So you can hear better, argue over fine points in the receiver, and THEN go out and get junk cable so you can save $50.00 . I just can't see the logic. Sam kf4yox -- From: Phil Kane k2...@kanafi.org Sent: Wednesday, June 23, 2010 12:10 AM To: Brett Howard br...@livecomputers.com Cc: elecraft elecraft@mailman.qth.net Subject: Re: [Elecraft] Coax Loss Figures On 6/22/2010 8:55 PM, Brett Howard wrote: From my calculation a 5:1 mismatch on 100 feet of L... __ Elecraft mailing list Home: htt... __ 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] K3SYN3 with and without shielding
Couldn't hurt as its going to have all the latest mods. That is a stiffener and not really a shield. Go to the mod kits and parts section on the elecraft website and you can read the installation instructions on that stiffener and even buy one to upgrade your other synth if you wish... ~Brett (N7MG) On Jun 23, 2010 7:04 AM, Sverre Holm (LA3ZA) la...@nrrl.no wrote: I am about to install the second receiver in the K3. I now have two synthesizers, the old no 1 which has been made up to date with a paralleled resistor ( http://www.elecraft.com/K3/mods/KSYN3%20DDS%20Gain%20Modification.pdfKSYN3 DDS Gain Modification ) and which does not have any shield. Then I have a new one with a shield which is several mm thick and covers most of the PCB. I would guess the shield is there for a purpose, so is it advisable that I swap the synthesizers and use the shielded one as no 1, which is also used for transmission I presume? Sverre - Sverre, LA3ZA K2 #2198, K3 #3391 http://www.qslnet.de/member/la3za/K2/mod.html LA3ZA Unofficial Guide to K2 modifications -- View this message in context: http://elecraft.365791.n2.nabble.com/K3SYN3-with-and-without-shielding-tp5213399p5213399.html Sent from the [K3] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Coax Loss Figures
This is definately something I plan on trying but first I'm going to use it as intended and record results to see how they match with what I'm told and what I read... For me its not about the score its about new things to try and more data to capture and understand. I think overcoming the problems of this setup in many different ways will keep me busy for at least 5 more field days. To me that's good fun! Reminds me of the way my late grandfather was and helps me feel closer to the old man that got me into the hobby in the first place. I only wish I could still share it with him today. ~Brett (N7MG) On Jun 23, 2010 7:22 AM, Radio Amateur N5GE n...@n5ge.com wrote: On Wed, 23 Jun 2010 00:19:03 -0700, Brett Howard br...@livecomputers.com wrote: Ditch the 43 foot vertical! The 43 foot vertical craze is a joke, as you can see by the figures, Tom, W8JI, gives you in his post showing feedline loss and SWR. During FD you are going to get most of your points from QSO's within the U.S.A., so put up a 40m ground plane at eight feet on a 4X4 wooden post in a two foot hole with 4 radials (you can use the radials to guy the wooden post). 40m is a good band for day and night and is only 32 feet or so tall plus eight feet of post. By doing this you will have a resonant antenna that will cover 360 degrees at ranges within the U.S.A. Adjust the length of your 43 ft vertical by removing the top ten feet and adjusting it for the end of 40m that you are going to work or set it in the middle of the band and attach it to the post. Tom, N5GE Licensed since 1976 QCWA Life Member 35102 n...@n5ge.com http://www.n5ge.com http://www.swotrc.net Yea I know I'm going way overkill and I was doing all the calculations by hand of total loss and at a 7:1 SWR (which is entirely possible on this 43 ft vertical) the loss at 30Mhz can get kinda ugly... I've not modeled it fully but on all bands but on 20 meters its 7:1 and on 40 meters its 3:1... [snip] __ 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] Coax Loss Figures
Actually I did one better... I found a great power point presentation and read that whole thing... Really dug being able to see the SWR plot that you had in there and that gave me a lot more confidence that I was going to be able to use my internal ATU in the K3 to get enough swing to get the job done. I'm not expecting to get much of anything below 40. I may try it but only to collect some information and write up what I find and store it away for the well in a pinch that can kinda work or don't even try... I do plan on building something similar to what you'd shown for doing 160 and 80 just to say I've built one and to make the setup that much more versatile should the need arise to get on the low bands. Looking forward to setting it up and collecting information then getting to do some comparisons between the 43 ft vertical and the Carolina windom which I'll be using together for diversity. Then I'll have one other wire up for RX only... I love having options! ;) My home station is such a compromise that the compromise situation that I get to play with on FD is just a pure joy! Not to mention that new locations also make it fun and interesting. Thanks much for all your information on the 43 ft vertical! I've found it quite informative and it gives me good information to go on to make sure things are coming out how I want. The plan is to feed it w/ 100 ft of LMR 400 or 50 ft of 9913 depending on how far away we have to put it and which gives us the best results if both are an option. ~Brett (N7MG) On Wed, Jun 23, 2010 at 9:43 AM, Phil Debbie Salas dpsa...@tx.rr.com wrote: ...Ditch the 43 foot vertical! The 43 foot vertical craze is a joke, as you can see by the figures, Tom, W8JI, gives you in his post showing feedline loss and SWR With a 1:4 unun at the base of the antenna, the VSWR from 40-10 meters is not bad - resulting in minimal coax losses. However, the VSWR on 80 and 160 meters with or without the unun is terrible, and you should match the antenna at the base on those bands. See the Articles section at www.ad5x.com for 160/80 meter matching ideas. Phil - AD5X __ 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] Antenna Separation for Diversity
So I know I'm going to shoot for as wide as I can get things... But for two main antennas on a k3 one being a Carolina Windom and the other being a 43 foot vertical. How much separation would one expect to be needed in order to prevent the COR's from switching during TX @ 100Watts? ~Brett (N7MG) __ 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] Antenna Separation for Diversity
Huh... Broadside to the vertical provided minimum coupling? Well I'm going to be slapping things together tomorrow and trying them out and trying to take a bunch of measurements and logging it all. Was just wondering if anyone else here had a similar setup and might have an answer here. I'm figuring I'll probably be able to pull off about 150 to 200 feet between them... Lets hope its enough. If not I can always make one of them RX only and put the ICE Receiver Limiter box on it. ~Brett (N7MG) -Original Message- From: Tom W8JI [mailto:w...@w8ji.com] Sent: Thursday, June 24, 2010 6:00 AM To: Brett Howard; elecraft Subject: Re: [Elecraft] Antenna Separation for Diversity Brett, No one can answer that question for you, because both antennas are unpredictable in nearfield performance. Also the layout of the antenna and what is around, under, and between the antennas is very important. With such a large soup of unknowns, plus there might be other transmitters on site (?), the only way to really know is to try it. If you had a normal dipole and wanted interaction to a vertical of known efficiency I have all that data. One thing I learned is minimum coupling from a good dipole to a good vertical was with the dipole BROADSIDE to the vertical, not at right angles as I assumed without thinking. The problem is the Carolina Windom is nothing like a dipole and not nearly as predictable as a dipole for nearfield or close farfield coupling, and that goes on top of the other variables that are bad enough on their own. Maybe you should go to an antenna forum, like on eHam or QRZ, armed with the information of the safe signal level the K3 will tolerate. Other than the safe signal level, this is really an antenna theory question and a good answer would be too complex for a radio reflector. 73 Tom - Original Message - From: Brett Howard br...@livecomputers.com To: elecraft elecraft@mailman.qth.net Sent: Thursday, June 24, 2010 5:14 AM Subject: [Elecraft] Antenna Separation for Diversity So I know I'm going to shoot for as wide as I can get things... But for two main antennas on a k3 one being a Carolina Windom and the other being a 43 foot vertical. How much separation would one expect to be needed in order to prevent the COR's from switching during TX @ 100Watts? ~Brett (N7MG) __ 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] Antenna Separation for Diversity
I'm totally going to print this and bring it with me as I'm certain no one will believe this unless I let them sit down and read through it themselves. Quite interesting though! ~Brett (N7MG) -Original Message- From: Bob Cunnings [mailto:bob.cunni...@gmail.com] Sent: Thursday, June 24, 2010 7:30 AM To: Brett Howard Cc: Tom W8JI; elecraft Subject: Re: [Elecraft] Antenna Separation for Diversity Huh... Broadside to the vertical provided minimum coupling? Apparently so. See the article by K6STI in the Sept. 1995 QST A Receiving Antenna that Rejects Local Noise for an explanation. Bob NW8L __ 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] Diversity receive and isolating antennas
This just gave me a great idea... If any of you have a LP-100A you can connect an antenna directly into the back of the unit (where the couplers normally connect) and the unit can then be used as a field strength meter and it will give values in dBm... Thats totally how I'm going to determine if my separation is going to be good enough... My hope is to be able to have 3 antennas on the K3 two which are TX/RX and one RX only... The RX only antenna I'm going to run through an ICE 196 RF Limiter (http://www.iceradioproducts.com/reconly.html#rflimiter). It starts limiting things to .3VRms so that should keep things happy... ~Brett (N7MG) On Thu, Jun 24, 2010 at 11:14 AM, Wayne Burdick n...@elecraft.com wrote: Hi George, If you have an RF voltmeter or milliwatt meter, try terminating the proposed RX antenna in a dummy load, then measure the voltage or power when you transmit. If it's less than about 2.23 Vrms (100 mW, or +20 dBm), you'll have no trouble at all. The subreceiver (as well as the RX ANT IN jack) can generally handle far more than this without damage; I pumped several watts in during early testing. But you don't want to take risks in the field, or have the COR (carrier operated relay) switching in and out during keying in CW mode. Antennas can change pattern due to wind, rotation, etc. If the power at the AUX RX input (sub receiver) looks like it may be excessive, you can take additional precautions. You could move the RX antenna farther away, put it in a null of the TX antenna, reduce its gain (length), or use the KEY OUT line to drive an external shunt PIN diode switch. 73, Wayne N6KR On Jun 24, 2010, at 10:04 AM, George A. Thornton wrote: I am planning to use my dual receive K3 for field day and we want to try out diversity receive. This particular setup will be for 20 meters only. The primary antenna will be a 20 meter monoband Yagi mounted on a 40-60 ft. tower. We were considering using a Buddipole mounted in vertical position and tuned for 20 meters voice to serve as a Rx only antenna for the sub. All transmission will be from the Yagi. I was planning to hook the Buddipole into a Rx only connector. We will do the best we can to isolate the two antennas but having not been to the site before I am not sure what will be possible in the way of geographic isolation. I want to make sure I won't do any damage to the K3 in case the isolation is not sufficient. Anyone familiar with this situation able to give me some guidance? __ 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] Clock Accuracy
I feel cheated! The 18,000 dollar Agilent scope I have on my bench doesn't have a clock in it... However the 60,000 dollar Agilent scope we just bought has windows on it and that syncs up over the net so that one remains fairly accurate... ;) ~Brett (N7MG) On Thu, 2010-06-24 at 18:05 -0600, Craig D. Smith wrote: y accurate either. But I've since learned how to deal with it. Pretty much every piece of electronics you buy these days has a clock in it. I've found absolutely zero correlation between the accuracy of the clocks and the overall quality or cost of the equipment. The worst clock here is in a $6K Agilent scope! Here's how to get around it - ignore the clocks! I don't even bother setting them or changing for DST, etc. The only two clocks I use in the shack are the wall-mounted radio controlled clock and the computer/logging clock which both adjust automatically and are plenty accurate for me ;) 73 Craig AC0DS __ 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] Ok what am I doing wrong? Low power out
I've not looked for too long but things were working earlier... However now even though I have PWR set to 100 Watts I only get about 8 out and the K3 PWR meter only shows 1 bar being highlighted. ~Brett __ 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] PA No worky...
Ok well I'll provide a bit more information. I've pulled the PA and taken a look at things and nothing looks like its gotten hot at all. Nothing is obviously wrong at all. I've checked all my filter settings (which hadn't changed since it was working a few minutes ago) and they all still seem to be correct. I reloaded the firmware to the radio and also restored my previous configuration. I've redone the synthesizer configuration because I've recently added the synth stiffeners. I then redid the TXG calibration. 5 Watt TXG calibration goes 100% successfully. However 100W TXG Calibration results in an ERR TXG message. It seems like its doing everything that it should to make the radio produce 100 watts but the PA just isn't doing its job. Flipping between PAio ON and PAio TST does produce a relay click so the PAIO is doing its job. I should also mention that all fan speed tests check out ok as well. If I'm forgetting anything else to check please enlighten me. Thanks much gentlemen ~Brett (N7MG) __ 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] PA No worky...
Yes it is but I was trying other settings to verify that things were still switching as they should. ~Brett On Jun 26, 2010 1:26 AM, Ian Maude i...@gb7mbc.net wrote: You should have the menu entry set to PA Nor. 73 Ian -- Ian J Maude, G0VGS SysOp GB7MBC HB9DRV-9 DX Clusters Member RSGB, GQRP 9838, FISTS 14077 | K3 #455 http://www.amateurradiotraining.org On 26 June 2010 09:11, Brett Howard br...@livecomputers.com wrote: Ok well I'll provide a bit more information. I've pulled the PA and taken a look at things and nothing looks like its gotten hot at all. Nothing is obviously wrong at all. I've checked all my filter settings (which hadn't changed since it was working a few minutes ago) and they all still seem to be correct. I reloaded the firmware to the radio and also restored my previous configuration. I've redone the synthesizer configuration because I've recently added the synth stiffeners. I then redid the TXG calibration. 5 Watt TXG calibration goes 100% successfully. However 100W TXG Calibration results in an ERR TXG message. It seems like its doing everything that it should to make the radio produce 100 watts but the PA just isn't doing its job. Flipping between PAio ON and PAio TST does produce a relay click so the PAIO is doing its job. I should also mention that all fan speed tests check out ok as well. If I'm forgetting anything else to check please enlighten me. Thanks much gentlemen ~Brett (N7MG) __ 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] Poor RX on SSB
Check your filter settings... Being that you are receiving narrower signals ok but not wider ones I suspect that you have a problem with a filter offset setting (make sure you put in the - if you have a negative offset) Let us know if you figure anything else out or have any further questions. ~Brett On Sun, 2010-06-27 at 13:52 -0500, Richard Hemingway wrote: I have just finished my K3 kit and it seems to be working just fine. However, I have been trying to tune into FD on SSB and find poor reception. I should explain that I live in a retirement community and only have a Isotron 20M antenna sitting on the top of a bookcase by a window on the second floor. However, that said I should further explain tht I usually can receive SSB fairly well. I am receiving CW great and PSK (which I usually use) pretty well. The SSB signals seem to be down in the mud, while the CW signals are very strong. I am new to this reflector (and to the K3) and this may be a dumb question. Any help on this or advice would be appreciated. Thanks, 73 Dick, N5XRD __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3: Possible potential?
I will say that its not implemented yet or even announced but if you've been lucky enough to see a P3 at a hamfest there is a port which can allow one to plug in a W2 coupler. ~Brett (N7MG) On Sat, 2010-06-26 at 17:55 -0700, juergen wrote: Hi A friend emailed me this link for a new product from Telepost. It looks fantastic. http://www.telepostinc.com/LP-500.html I wonder if the P3 will evolve into something similar? 73 John __ 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] Bad start to FD - smoked a K3!!!!
You may look into checking Q8 and Q9 in the post amplifier. You can see what I'm talking about in the top right section of page 8 on the schematics (here): http://www.elecraft.com/manual/K3_Schematics_Jun_2010.pdf Also check the resistors around that area for stuff that looks like it got hot... R66, R68, R56, R75 and the like... I had something similar happen to me and Q9 blew on my radio. Replace Q8 and Q9 together if its needed as well as any of the resistors that had a hard day and you should be ok... The K3 does have protection for this if you have the mod in place that helps make it happen. The current through this path is monitored and if the power in gets too high it can turn off your preamp or engage the ATT to try and protect itself. However when running high power with multiple stations in close proximity there are procedures and equipment that should be in place or you're going to have problems no matter what brand of radio you're running. ~Brett (N7MG) On Sat, 2010-06-26 at 06:06 -0700, NZ0T wrote: We had one guy get on 75 with a KW with another on 40. Guy on 40 didn't know. He got the RFI warning, the K3 locked up and he smelled smoke. Now his K3 has no RX at all. I thought there was a high power protection circuit? We have other rigs to use but any input as to what needs to be done with the smoked K3 would be appreciated before he sends it back to Aptos. 73 Bill NZ0T My K3 is OK __ 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] Bad start to FD - smoked a K3!!!!
I should also add that you can find these components if you pull the bottom front cover off (the one with the bail on it) and look toward the right side when the radio is sitting on its top... ~Brett (N7MG) On Sun, Jun 27, 2010 at 5:35 PM, Brett Howard br...@livecomputers.com wrote: You may look into checking Q8 and Q9 in the post amplifier. You can see what I'm talking about in the top right section of page 8 on the schematics (here): http://www.elecraft.com/manual/K3_Schematics_Jun_2010.pdf Also check the resistors around that area for stuff that looks like it got hot... R66, R68, R56, R75 and the like... I had something similar happen to me and Q9 blew on my radio. Replace Q8 and Q9 together if its needed as well as any of the resistors that had a hard day and you should be ok... The K3 does have protection for this if you have the mod in place that helps make it happen. The current through this path is monitored and if the power in gets too high it can turn off your preamp or engage the ATT to try and protect itself. However when running high power with multiple stations in close proximity there are procedures and equipment that should be in place or you're going to have problems no matter what brand of radio you're running. ~Brett (N7MG) On Sat, 2010-06-26 at 06:06 -0700, NZ0T wrote: We had one guy get on 75 with a KW with another on 40. Guy on 40 didn't know. He got the RFI warning, the K3 locked up and he smelled smoke. Now his K3 has no RX at all. I thought there was a high power protection circuit? We have other rigs to use but any input as to what needs to be done with the smoked K3 would be appreciated before he sends it back to Aptos. 73 Bill NZ0T My K3 is OK __ 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: Memory Recall
Actually the K3 can do this! You just have to setup the K3 to not do delayed memory updating. Go into the CONFIG:MEM 0-9 menu entry and press the 1 button to select MV NOR. Now when you're in the memory mode you can turn the VFO and the memories will be gone to in real time. MV DLY is something I prefer usually as you'll have all the relays clicking in the band pass and low pass filters as you ratchet through your memories and what not... But its a lot more like Kenwood does things once you set it up that way. ~Brett (N7MG) On Mon, 2010-06-28 at 10:02 +0100, Tom Boucher wrote: Thanks Art, that was the problem. I had tried to set up memory hopping between bands, which unlike my TS850, the K3 won't do. WB8ENE wrote: Sounds like you have a * in the first position of the name for that memory location. Knut AB2TC - you have to push the MV button a second time if VFO A knob is used to select memory number, but not if you use the number keys. __ 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] Anderson Power Poles?
I just bought a rigrunner from HRO and also bought some extra APP connectors... The APP's that came with the rig runner did not have roll pins but the HRO branded extras that I bought did have them. So there are still places where you can get your hands on them. ~Brett On Mon, 2010-06-28 at 09:36 +0200, DM4iM wrote: Elecrafters, i was looking for Anderson power poles on the Ham Radio Fair in Friedrichshafen, DL. I found two dealers, both of them sold the Power Poles WITHOUT the pin that goes between the two housings. They said the poles were shipped without them and they´d never seen them and i must be wrong blah blah. Are they really no longer shipped with the pins or do these german dealers sell asia-made copies? I could have asked Wayne at his booth, but he had a lot of traffic. -- 73, Martin DM4iM __ 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] Another (stupid) Clock Question
When you're displaying Date or time or whatever (there are several other things that can be shown in DISP mode). Simply turn the VFO B knob to change to the other values... The K3 is VERY consistent in that if something is displayed in the top line of text the VFO A knob adjusts it and if it is displayed in the bottom line of text the VFO B knob adjusts that. ~Brett (N7MG) On Mon, 2010-06-28 at 10:56 -0700, cl...@nwlink.com wrote: So - I had my new K3 out at our Field Day (W7S - Sammamish ARES/RACES Group) operation; and it worked great! I'm still getting used to all the filters and features; but it was definitely a step above any other rig there, INCLUDING a Flex-3000. The HI RFI mod definetly saved my rig on more than one occasion when someone started using a 40M dipole that was only 10' feet separated from the 15M dipole that I was using. I did have one interesting issue - I let a number of folks use the rig, with no apparent ill effects; EXCEPT, the clock (when displayed in VFO B) is now displaying on the DATE and not the time. I read through the owners manual, and CANNOT seem to figure out how to change that back. Also - the manual implies that the Display button will cycle through several different displays in VFO B; but, the only two I can see are either the Frequency or Clock display. Can someone assist? Thanks! Clay N7QNM __ 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] PR6 SubRec and two bands at once on K3
How are you selecting to enable your PR6? Are you using the DIGOUT line? If so you should be able to see what is going on by looking at the DIGOUT line. You will need the RX ant enabled in order to use the PR6. The PR6 is inserted into your RX_ANT loop when its enabled. Otherwise it simply passes those through to the BNC's on the other side. ~Brett (N7MG) On Mon, 2010-06-28 at 13:01 -0500, Bill K9YEQ wrote: Seems when I have the Sub Receiver set on 6 Mtrs and the main band on 75, the PR6 isn't getting the signal through the RX. Or do I not need the RX on to use the PR6, or is the PR6 out of circuit when in this configuration? Bill K9YEQ K2 and KX1 field tester, K3 and modules __ 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 QSK
Yes this is correct as long as PTT is applied you won't switch back into RX mode between elements. Its working on VOX is how things should go! ~Brett (N7MG) On Mon, 2010-06-28 at 13:22 -0400, Mike wrote: When I send CW from the computer, I don't hear anything until the string of characters is finished. I think that's due to my closing the PTT by turning on DTR at the beginning and turning it off at the end, ie. DTR on, send NF4L, DTR off. Am I correct? Seems to work with VOX tho. 73, Mike NF4L __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ 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] Fwd: [FlexEdge] Field Day, Focus and Contest Skins?
I actually had a similar experience however our guys were using the K3 an LP-PAN and PowerSDR I/F. They'd go to enter the callsign and the number of the call would send you off to that frequency. Not to mention that we were in a white automotive tent which made it quite bright inside there and it was tough to see the mouse cursor for some of the ops. ~Brett (N7MG) On Mon, Jun 28, 2010 at 12:49 PM, Lyle Johnson k...@wavecable.com wrote: I think you'll find this interesting. Lyle Original Message Subject: [FlexEdge] Field Day, Focus and Contest Skins? Date: Mon, 28 Jun 2010 14:18:15 -0500 From: Dr. Howard S. White drpa...@kleega.com To: flexe...@flex-radio.biz flexe...@flex-radio.biz Ran the Flex 5000 for Field Day with 2 Flex Newbie's who were Very Experienced Contest Operators who regularly win major contests. The issue quickly became the fact that it was difficult to use the Flex in a contest environment because the operators had difficulty with the focus of the keyboard in search and pounce mode. This was not an issue when we held a frequency as we did not have to touch the radio. On several occasions, they would be typing into N1MM, then changing frequencies, forgetting to move the focus back to N1MM so PowerSDR abruptly changed the radio frequencies or bands because they typed on the wrong screen...and of course lost the contact It became highly frustrating in the heat of battle.. I had the mouse set so that by hovering over a program it would shift focus but that was not really good enough in the heat of the contest where the mouse needs to be hovering over PowerSDR but typing needs to be into the Contest logger. Bottom Line: They concluded that the Flex was not ready for Prime Time Contesting. I seem to recall some discussions on program focus on this reflector but it is impossible to search this reflector's archives.. A Few of Recommendations: 1. There really needs to be a Contest Skin which removes about 90% of the controls that you never use in the contest...they could be set it and forget it in the main form and hidden during contests. You really only use frequency via mouse wheel, band, filters. 2. The Contest Skin needs to integrate a contest logging program such as N1MM or Writelog into the Skin so that you never have to switch programs...ideally the logger should show inside the skin. 3. In the alternative, remove the ability of the keyboard to interact with PowerSDR during contests and fix its focus onto the Contest Logger while fixing the focus of the mouse wheel on frequency changing. 4. Or in the alternative, use a second computer for the contest logger... really ugly solution... 5. There needs to be a detailed Knowledge Base Article on Focus for contesting. One other suggestion... move this reflector to a reflector such as Yahoo Groups which has a searchable archive...so you won't continually have people asking the same questions all the time. __ Howard S. White Ph.D. P. Eng., VE3GFW/K6 ex-AE6SM KY6LA Website: www.ky6la.comhttp://www.ky6la.com/ No Good Deed Goes Unpunished Ham Antennas Save Lives - Katrina, 2003 2007 San Diego Fires, 911 ___ Flexedge mailing list flexe...@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software development and experimentalist who are using alpha and beta versions of the software. __ 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] Fwd: [FlexEdge] Field Day, Focus and Contest Skins?
I should add though that they so loved the ability to click around on stations just like they can with their N1MM band map that they usually kept causing themselves the problem. They'd swear off using PowerSDR and said I'm just going to leave the focus on N1MM and not worry about it anymore but they'd keep seeing something they'd want to go after and the point/click ease was just too attractive. Many also had issues with the right click to go between pan mode and point/shoot mode. Many also didn't like the slight lag in turning the knob and seeing the signals. As you tune the knob on the K3 the signals kinda drop out and you have to stop your QSY then let the signals come up out of the noise again and then dial into it... I hope that the P3 is a lot faster and the signals stay visible while fast QSYing. I don't remember being able to do a whole lot of that when I saw it in Seaside but there weren't a lot of signals all over just the 4 that were in the recorder... ~Brett (N7MG) On Mon, Jun 28, 2010 at 12:54 PM, Brett Howard br...@livecomputers.com wrote: I actually had a similar experience however our guys were using the K3 an LP-PAN and PowerSDR I/F. They'd go to enter the callsign and the number of the call would send you off to that frequency. Not to mention that we were in a white automotive tent which made it quite bright inside there and it was tough to see the mouse cursor for some of the ops. ~Brett (N7MG) On Mon, Jun 28, 2010 at 12:49 PM, Lyle Johnson k...@wavecable.com wrote: I think you'll find this interesting. Lyle Original Message Subject: [FlexEdge] Field Day, Focus and Contest Skins? Date: Mon, 28 Jun 2010 14:18:15 -0500 From: Dr. Howard S. White drpa...@kleega.com To: flexe...@flex-radio.biz flexe...@flex-radio.biz Ran the Flex 5000 for Field Day with 2 Flex Newbie's who were Very Experienced Contest Operators who regularly win major contests. The issue quickly became the fact that it was difficult to use the Flex in a contest environment because the operators had difficulty with the focus of the keyboard in search and pounce mode. This was not an issue when we held a frequency as we did not have to touch the radio. On several occasions, they would be typing into N1MM, then changing frequencies, forgetting to move the focus back to N1MM so PowerSDR abruptly changed the radio frequencies or bands because they typed on the wrong screen...and of course lost the contact It became highly frustrating in the heat of battle.. I had the mouse set so that by hovering over a program it would shift focus but that was not really good enough in the heat of the contest where the mouse needs to be hovering over PowerSDR but typing needs to be into the Contest logger. Bottom Line: They concluded that the Flex was not ready for Prime Time Contesting. I seem to recall some discussions on program focus on this reflector but it is impossible to search this reflector's archives.. A Few of Recommendations: 1. There really needs to be a Contest Skin which removes about 90% of the controls that you never use in the contest...they could be set it and forget it in the main form and hidden during contests. You really only use frequency via mouse wheel, band, filters. 2. The Contest Skin needs to integrate a contest logging program such as N1MM or Writelog into the Skin so that you never have to switch programs...ideally the logger should show inside the skin. 3. In the alternative, remove the ability of the keyboard to interact with PowerSDR during contests and fix its focus onto the Contest Logger while fixing the focus of the mouse wheel on frequency changing. 4. Or in the alternative, use a second computer for the contest logger... really ugly solution... 5. There needs to be a detailed Knowledge Base Article on Focus for contesting. One other suggestion... move this reflector to a reflector such as Yahoo Groups which has a searchable archive...so you won't continually have people asking the same questions all the time. __ Howard S. White Ph.D. P. Eng., VE3GFW/K6 ex-AE6SM KY6LA Website: www.ky6la.comhttp://www.ky6la.com/ No Good Deed Goes Unpunished Ham Antennas Save Lives - Katrina, 2003 2007 San Diego Fires, 911 ___ Flexedge mailing list flexe...@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software development and experimentalist who are using alpha and beta versions of the software. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm
Re: [Elecraft] Fwd: [FlexEdge] Field Day, Focus and Contest Skins?
Yea I kinda noticed that... But I felt like I was about to enter into a seizure when its real time... I'm not sure what would work better but two interesting things to see would be either have the display go into real time mode during a QSY or have the display freeze the averaged data during QSY. I'm not as certain about that second idea but there are maybe some slight modifications of that that could be interesting... ~Brett (N7MG) On Mon, 2010-06-28 at 14:59 -0700, W6NEK wrote: Hi Brett, What you describe is commensurate with the PowerSDR Display AVG Mode being enabled. If AVG Mode is off, the displayed panadapter signal amplitude will not decrease as you tune the band. The displayed signals are real-time with a display frame rate adjustable to 50 frames per second. Just click the AVG Button off. 73, Frank - W6NEK - Original Message - From: Brett Howard br...@livecomputers.com To: Lyle Johnson k...@wavecable.com Cc: Elecraft Group elecraft@mailman.qth.net Sent: Monday, June 28, 2010 12:57 PM Subject: Re: [Elecraft] Fwd: [FlexEdge] Field Day, Focus and Contest Skins? SNIP Many also didn't like the slight lag in turning the knob and seeing the signals. As you tune the knob on the K3 the signals kinda drop out and you have to stop your QSY then let the signals come up out of the noise again and then dial into it... I hope that the P3 is a lot faster and the signals stay visible while fast QSYing. I don't remember being able to do a whole lot of that when I saw it in Seaside but there weren't a lot of signals all over just the 4 that were in the recorder... __ 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] playing back the voice recorder
Hold the MON button (on the PWR knob) then turn the MON level up and try it again... ~Brett (N7MG) On Mon, Jun 28, 2010 at 5:28 PM, Jed Barton j...@jedbarton.com wrote: Hey guys, Alright, trying to figure out why i can not hear the recording when i record with the dvr. Here's what i do. press the record button, then tap memory 1 and do a test recording. Then i press record to stop recording. I then hit memory 1, but hear nothing, any ideas? \ Thanks, Jed __ 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] adjusting the transmitter unkey time
Hold the bottom left knob of that quad pack and when you get into that mode adjust the knob to set the value where you want it to be... ~Brett (N7MG) On Mon, 2010-06-28 at 20:37 -0400, Jed Barton wrote: Hey guys, Alright, got the power thing figured out. Here's a question, how do i set the time from when i send my last letter of cw to when the rig unkeys, in other words, you can adjust the amount of time from when you send your last letter to when the transmitter unkeys. Thoughts? Thanks, Jed __ 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] PR6 SubRec and two bands at once on K3
Well there are a few issues there... Like Don mentioned you're not going to be able to do that with 6M on the sub rx unless the main RX in on 6m too. However you can do it with 6M on the main RX and 160-6 on the sub RX... Your only other option would be to use the AUX RF port and to connect the preamp through that port. But you'd not be able to TX back out through that port. ~Brett (N7MG) On Mon, 2010-06-28 at 20:43 -0500, Bill K9YEQ wrote: Brett, Thank you for the response. I haven't considered the use of the pass through BNC's. I want to use the Sub Rec and the 6 meters and be able to switch back and forth to transmit on any 160-6 meter freqs. Bill K9YEQ -Original Message- From: Brett Howard [mailto:br...@livecomputers.com] Sent: Monday, June 28, 2010 1:35 PM To: Bill K9YEQ Cc: Elecraft Subject: Re: [Elecraft] PR6 SubRec and two bands at once on K3 How are you selecting to enable your PR6? Are you using the DIGOUT line? If so you should be able to see what is going on by looking at the DIGOUT line. You will need the RX ant enabled in order to use the PR6. The PR6 is inserted into your RX_ANT loop when its enabled. Otherwise it simply passes those through to the BNC's on the other side. ~Brett (N7MG) On Mon, 2010-06-28 at 13:01 -0500, Bill K9YEQ wrote: Seems when I have the Sub Receiver set on 6 Mtrs and the main band on 75, the PR6 isn't getting the signal through the RX. Or do I not need the RX on to use the PR6, or is the PR6 out of circuit when in this configuration? Bill K9YEQ K2 and KX1 field tester, K3 and modules __ 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] Wish List
There is an application called K3EZ that will allow you to do just that if you wish... ~Brett (N7MG) On Mon, 2010-06-28 at 21:05 -0500, Robert Mitilieri wrote: Ok, it's only been a few days since I've built my K3 #4411 and I have something for the wish list. I would like to see multiple TX EQ presets. I use a full-range mic element for rag chewing, a Heil HC5 element for DXing, and a hand mic for portable use (which the K3 makes so easy). The TX EQ for these mics are very different. It would be a convenience to select from a few preset TX EQ curves. There's my 2 cents for the day! 73, Robert N9EF __ 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] Fwd: [FlexEdge] Field Day, Focus and Contest Skins?
Good show kind sir! This is exactly what I was thinking of when I was trying to come up with how it would need to be coded. Really looking forward to mine shipping! ~Brett (N7MG) On Mon, 2010-06-28 at 21:19 -0700, Alan Bloom wrote: Many also didn't like the slight lag in turning the knob and seeing the signals. As you tune the knob on the K3 the signals kinda drop out and you have to stop your QSY then let the signals come up out of the noise again and then dial into it... That is probably caused by averaging. I believe that with PowerSDR, whenever you tune the K3, the old spectrum is still present in the averaging memory and you have to wait an averaging time constant or two to see the new spectrum. I hope that the P3 is a lot faster and the signals stay visible while fast QSYing. The P3 automatically re-sets averaging (and peak hold) whenever the K3 frequency changes. So you see an un-averaged signal immediately after tuning and then the signal smooths out as the averaging memory is refreshed. But at least the signal never goes away. Alan N1AL On Mon, 2010-06-28 at 12:57 -0700, Brett Howard wrote: I should add though that they so loved the ability to click around on stations just like they can with their N1MM band map that they usually kept causing themselves the problem. They'd swear off using PowerSDR and said I'm just going to leave the focus on N1MM and not worry about it anymore but they'd keep seeing something they'd want to go after and the point/click ease was just too attractive. Many also had issues with the right click to go between pan mode and point/shoot mode. Many also didn't like the slight lag in turning the knob and seeing the signals. As you tune the knob on the K3 the signals kinda drop out and you have to stop your QSY then let the signals come up out of the noise again and then dial into it... I hope that the P3 is a lot faster and the signals stay visible while fast QSYing. I don't remember being able to do a whole lot of that when I saw it in Seaside but there weren't a lot of signals all over just the 4 that were in the recorder... ~Brett (N7MG) __ 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] Fwd: [FlexEdge] Field Day, Focus and Contest, Skins?
Good tips! I was wondering if turning all that off would work out for us.. I did find the collapsed views to be really nice! And while I never use the audio out of power SDR I did find it pretty slick that the new interface follows your actual radio bandwidth. Quite the slick little setup! ~Brett (N7MG) On Tue, 2010-06-29 at 02:07 -0400, Larry Phipps wrote: If you set all of the keyboard shortcuts in the PowerSDR/IF SetupKeyboard tab to none, then typing while you're in the focus of the panadapter will not get you in trouble. You could still use shortcuts if you are careful to avoid any key that your logger uses as a shortcut, or any letter or number key which might be used to enter a callsign. In my case, I run N1MM in contests, and I can enter data, tab through the entries, etc. even while my mouse is hovering over the pan display. I use a mouse utility called WizMouse to allow the focus to follow the mouse without clicking. After saving the contact, I can click on another signal and the N1MM entry boxes are cleared and ready to accept new data. I find that it also helps to run PowerSDR in collapsed mode to eliminate clutter. This mode is not available in the Flex releases of PowerSDR. It may not be a 100% solution, but it's pretty good and you won't risk having the rig jumping around in frequency if you type while in the focus of the panadapter. And as I said, with N1MM the text even shows up in the call sign entry box as you would want. 73, Larry N8LP Date: Mon, 28 Jun 2010 12:54:03 -0700 From: Brett Howard br...@livecomputers.com Subject: Re: [Elecraft] Fwd: [FlexEdge] Field Day, Focus and Contest Skins? To: Lyle Johnson k...@wavecable.com Cc: Elecraft Group elecraft@mailman.qth.net Message-ID: aanlktineroz9lybqm-gavbmc8oilf7cwbhk2kft9-...@mail.gmail.com Content-Type: text/plain; charset=ISO-8859-1 I actually had a similar experience however our guys were using the K3 an LP-PAN and PowerSDR I/F. They'd go to enter the callsign and the number of the call would send you off to that frequency. Not to mention that we were in a white automotive tent which made it quite bright inside there and it was tough to see the mouse cursor for some of the ops. ~Brett (N7MG) On Mon, Jun 28, 2010 at 12:49 PM, Lyle Johnson k...@wavecable.com wrote: ?I think you'll find this interesting. Lyle __ 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 Repair
I really wanted to try and trace out what was going wrong with my KPA3 but I was kinda low for time to put into it and the first thing I was going to need was some ribbon cables made up that would allow me to remote the KPA3 so that I could trace it while its outside the K3... I figured I'd move on and go ahead and send it in once I realized I wasn't going to be able to trace things out that way. Not to mention that I really need to make an RF voltage probe but I usually go and use the spec an at work... Anyway sometimes a month before it hits the bench is faster than I'd be able to get to it. Esp when I can use it at 10W and get on the air instead! ;) However I do wish I could keep it and try to fix it for that month while I waited rather than it just sitting on a shelf. ~Brett (N7MG) On Thu, 2010-07-01 at 21:16 -0400, Guy Olinger K2AV wrote: The biggest ramp up for working on a K3 is getting to the point where you can read its schematic with understanding. The only piece of test equipment I've had to use on it is an XG-1. I DID have some problems that I could see most sending it back to the shop. DO need magnifying glasses tho and willingness to get in the program for SMD components. Much easier to work on a K2. 73, Guy On Thu, Jul 1, 2010 at 4:54 PM, David leDuc n...@n1ix.com wrote: If you have all the test equipment necessary to troubleshoot these modern radios more power to you. In the old days I used to be able to work on my car too. __ 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 mic problems
You may need to update your manual... You should be shooting for only 5-7 bars of ALC. Also make sure that you have compression off when trying to adjust these settings. You can find a copy of the latest manual here: http://www.elecraft.com/manual/K3_Owner%27s_Manual_Rev_D7sm.pdf Once there take a look at page 28... ~Brett (N7MG) On Thu, Jul 1, 2010 at 8:55 PM, Jim Hoge knowk...@verizon.net wrote: I am need of guidance on all things voice. I have used my K3 (#1816) for some time now but only on cw. With the 6m openings, I decided to put a mic on the radio and promptly ran into problems. I cannot get the mic gain high enough to reach 8 bars per the manual. I can only get close if the mic gain is maxed, the compression is maxed, the menu gain is toggled to the high level, and I shout. I have tried both a hand mic wired through the front panel and an Heil PR-20 wired through the rear panel. I have not played with eq at all yet but I have noticed that there is no mic output unless there is some compression. No compression equals no output. Your help is greatly appreciated. It's probably operator error but I'm too close to see the problem. 73, Jim W5QM __ 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] Heil 4-pin XLR pinout
So I've done a few searches and I'm finding all sorts of people wanting to sell me an adapter cable... But what I'm trying to find online is a place that gives the pinout for Heil's 4-pin XLR mic's... I'm also trying to find a local source for the connector and seem to be striking out so if anyone knows a good place to procure said connector I'd appreciate that too.. I've already got a Kenwood adapter cable and I'm hoping to not destroy that cable yet make another cable that will allow me to run the mic into the back... ~Brett (N7MG) __ 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] what was so provocative? - The Answer
Reminds me of the first time a friend of mine asked if they could borrow my rubber and promised to give it back when they were done... ;) BTW a rubber is an eraser... ~Brett On Fri, 2010-07-02 at 17:51 -0700, Lyle Johnson wrote: Not to mention the use of stick it rather than sell it We must be careful not to read too much into this sort of thing. This ad was placed in a UK magazine by a UK supplier targeting a UK market. The meaning of many common English words often changes as one crosses the borders of the USA., as I quickly discovered the first time I traveled overseas. Back in 1972, when I held the callsign ZL2ACY, I found myself in the company of a very conservative group of people. There was a young child present, perhaps 2 years old, and I complimented the parents, describing him as a cute little bug..r. I was met with shocked stares and gasps. One elderly gentlemen drew me aside and explained the meaning of this word in Kiwi society, which was quite different than it was in American society at the time. We were both surprised to discover this. Upon this revelation, I humbly apologized to the group. 73, Lyle KK7P __ 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] Heil 4-pin XLR pinout
I finally found some online... And after calling around for a bit I did find 2 shops that had 4 pin XLR connectors. One shop only had panel mount versions and the other shop only has right angle versions. Neither had more than 2 or 3 of them though. I'm going to go get one of the right angle ones and I've ordered a set of 3 of the straight ones online. Will be nice to get the mic moved to the back... The plan is to put a 3.5mm jack and an RCA on the same cable with a lil pigtail so I don't lose the ability to use the PTT button on the mic if its ever needed... ~Brett (N7MG) On Fri, 2010-07-02 at 22:23 -0700, Jim Brown wrote: On Fri, 02 Jul 2010 19:16:39 -0400, Don Wilhelm wrote: Check the Pro-audio stores and websites for the XLR connector. It should be noted that the only standard within the PRO AUDIO world for the wiring of an XL connector with more than three pins is that pin 1 is the designated shield contact. For a 3-pin XL connector used for balanced audio, pin 1 is the shield, pin 2 is positive polarity, and pin 3 is negative polarity. There are two major mfrs of XL connectors -- Neutrik, and Switchcraft. Both are widely distributed in North America. Both are first class companies, but Switchraft also makes some cheapies. The high quality cable-mounted 3-pin male is an A3M, a 4-pin is A4M. The cable mounted females are an A3F and A4F, respectively. The only difference is the inserts. AxM shells are identical, all AxF shells are identical. The difference is the inserts. One good place to buy them is Full Compass, in Madison, WI. 73, Jim Brown 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
Re: [Elecraft] Provocative Kenwood Advert working link here
Interesting point! I talked to a lot of people at Seaside who decided that the K3 wasn't their radio because it didn't have a built in fish finder as many of them called panadapters... This was usually said by people who were seeing the P3 for the first time and were finally considering the K3 as a radio they could now own because it has a panadapter... But boy with this radio not having an IF out people won't even be able to use LP-PAN or anything like that to make it happen... Seems like adding a feature like an IF out probably wouldn't have added too horribly much cost to things either... But hey everything is a trade off.. I'm sure they'll sell some! ~Brett (N7MG) On Sat, Jul 3, 2010 at 4:17 AM, Jeff KB2M k...@comcast.net wrote: What I don't like about the new Kenwood is that it doesn't have an IF out. I think they shot themselves in the foot on that one. 73 Jeff kb2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of juergen Sent: Saturday, July 03, 2010 1:47 AM To: Elecraft Reflector; n...@n5ge.com Subject: Re: [Elecraft] Provocative Kenwood Advert working link here Hi I see no advantages over the K3, so why would you even consider this new model Kenwood? If it was a 1000 dollar radio that might be a good a reason for a change. As I see it the Kenwood has less knobs and functionality on its front panel than the K3. The transmitter uses 12 volt devices so the IMD is probably going to be below acceptable standards. It does not look like the new Kenwood has remote direct internet control like the TS480. This is just a TS570S on steroids for the receiver, it aint gonna set the world on fire. All I am waiting for now is Icoms down conversion radio. I would not be surprised if they released something like the IC706 with a down conversion receiver just to be trendy. Despite what Icom says it will produce a down conversion radio. They had a good one the IC751A. It would be hard for Icom too brag about receiver performance when this cheap lowly Kenwood will kick the crap out of its $10K IC78000, not a good look in the market place! Stay tuned for the new movie, Fiddler on the roofing filter! It stars the 3 Samurai's 73 John --- On Fri, 7/2/10, Radio Amateur N5GE n...@n5ge.com wrote: From: Radio Amateur N5GE n...@n5ge.com Subject: Re: [Elecraft] Provocative Kenwood Advert working link here To: Elecraft Reflector elecraft@mailman.qth.net Date: Friday, July 2, 2010, 9:32 PM On Fri, 2 Jul 2010 17:33:21 -0400, DOUGLAS ZWIEBEL doug...@gmail.com wrote: Oh! Wow! It has ten Hz display resolution! Thanks to Lew K6LMP for posting this. Once you get there, double click the icon. http://public.me.com/lewphelps de Doug KR2Q __ 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] WJST and the K3
Doesn't look like it'll fit... Where as the Tamura has 3 possible pins on a side at .01 spacing the Bourns part has 4 possible pin locations per side at the same .01 spacing... So they aren't going to be pretty drop in replacements.' ~Brett (N7MG) On Sat, Jul 3, 2010 at 4:48 AM, Paul Christensen w...@arrl.net wrote: So the K3 has a fully floating ground on the line audio input, isolated from the chassis??? Is that correct? 73 Tom The K3's line input transformer primary is connected to the 1/8 TRS jack using tip and sleeve where the sleeve floats above chassis ground. The on-line schematic of the KIO3 board was revised a few weeks ago and it looks like the Bourns LM-NP-1001 transformer may now be an alternative from Elecraft although I haven't looked at pin compatibility with the existing Tamura TTC-108 transformers. According to Jack Smith's measurements, the Bourns transformers have very good frequency response and THD characteristics as long as input levels remain at typical -10 dBV from consumer-grade PC sound cards. At just USD $1.75 ea. from Mouser, they look like a good value. Paul, W9AC __ 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] scanning
You need to fully recall the memory into the VFO before hitting scan... ~Brett (N7MG) On Sat, 2010-07-03 at 16:36 -0400, Jack Colson wrote: I am unable to enable the scan function. I have stored two frequencies in memory locations 90 and 91. According to the manual(version D4 page 40) simply depress MV, hold scan button for 2 seconds and you will see AF ON. Well holding SCAN does nothing and do not see the AF msg nor SCAN. This must be simple but it eludes me. I am running the latest F/W version 4.03. Any thoughts? Thank you, 73 Jack, W3TMZ __ 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] scanning
I find that using M1-M4 as band segment memories works quite well for me... I'll use M1 as a CW band segment, M2 as an SSB band segment, M3 as a data modes segment... Then I can quickly recall them and start scanning that segment. They also make for a quick way to get where I want to be... Say I'm on 20 SSB and want to get to 40 CW... MV, 4, MV, M1 4 button presses and I'm right where I want to be ready to go. ~Brett (N7MG) On Sat, 2010-07-03 at 16:39 -0600, Duncan Carter wrote: There is a macro in the down loadable Programmer's Reference called SCANNOW that can make scanning simpler to use, especially for for fequencies that you use infrequently. You can also use the M-V and V-M to enter frequencies in the K3 memory for VFO A and VFO that you wish to recall more frequently. Dunc, W5DC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 DSP Board Upgrade Info
Here are the files that Andy has put together. I'm sure they'll prove useful to some: Elecraft Low Freq. Mods 2010_1 Elecraft Low Freq. Mods 2010_2 Elecraft Low Freq. Mods 2008_1 Elecraft Low Freq. Mods 2008_2 ~Brett (N7MG) __ 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] PSK PTT doesn't work with USB to serial converter
Heck a lot of the current quality DMM's will take this in stride... One of the tests we do when demoing meters (and I've seen it done commonly from reviewers) is to run a meter through the different feature settings while connected to the mains. Often we'll just dump the probes into the wall at 120VAC (or often 240VAC) then slowly turn the meters knob through all possible settings. Then run the knob back to off, remove probes from the wall and power the unit back on. If its not still working perfectly and within its calibration spec we won't buy them. Every Agilent and Fluke meter I've tried this with passed with flying colors. ~Brett (N7MG) On Sat, 2010-07-03 at 20:30 -0400, Don Wilhelm wrote: Mike and Casey, DO NOT put an ohmmeter across the RS-232 pins if you value your ohmmeter. You can use a voltmeter to see what the voltage levels are. They should go from greater than 3 volts negative to greater than 3 volts positive - the absolute value of the voltages could be as great as 15 volts, but more likely 12 in a PC environment. 73, Don W3FPR Mike wrote: If you can toggle RTS, you could put an ohmeter across the output and see if it changes state. __ 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] PSK PTT doesn't work with USB to serial converter
I got a used Fluke 179 for a pretty dang reasonable price that I use for home use. I don't see them as all that much more extravagant than say a K3 purchase. Its one of those things that can be seen as one of the best of breeds and will last you a long time. ~Brett (N7MG) On Sun, 2010-07-04 at 09:14 -0500, Don Cunningham wrote: Also, Brett, most of us, and most new hams cannot or do not buy Fluke or Agilent meters on our budgets, hi. Unfortunately the price line we buy won't pass that test. Just a thought. 73, Don, WB5HAK __ 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 Frequency Memory Editor
Its only been released to some of the field testers at the moment. It has been getting put through its paces so that its truly ready for prime time once it drops... ~Brett (N7MG) On Sun, 2010-07-04 at 19:46 +, d_jo...@sympatico.ca wrote: Has the K3 Frequency Memory Editor been release yet? (Referenced on page 16 in Rev D7 of the Owner's Manual). I've looked in both of the K3 software pages and haven't been able to locate it. Tnx 73 Doug, VE3MV __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] A thought regarding new radios
And don't forget you also improve value by not having to pay for features that you won't use. Don't need a tuner? You don't have to pay for one... Don't want two receivers? You don't have to pay for both of them... Then on another note... Want two receivers but don't have the money to pay for one now? Get on the air with part of the radio and add that which you want later... My family loves my K3 as it has made for an avenue of Xmas presents for the guy who has everything for a few years coming now... ;) ~Brett (N7MG) On Sun, 2010-07-04 at 14:36 -0700, Wayne Burdick wrote: Some companies bring out new transceiver models every year or two. Our philosophy is different. We'll continue improving the K3, protecting your investment. Similarly, the P3 and KPA500 will extend the capabilities of the K3 without any need to replace the rig itself. 73, Wayne N6KR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 DSP Board Upgrade Info
http://dl.dropbox.com/u/1493706/K3/K3%20DSP%20Upgrade%20PDFs/Elecraft%20Low%20Frequency%20Audio%20Mods%202010_1.pdf http://dl.dropbox.com/u/1493706/K3/K3%20DSP%20Upgrade%20PDFs/Elecraft%20Low%20frequency%20Audio%20Mods%202010_2.pdf http://dl.dropbox.com/u/1493706/K3/K3%20DSP%20Upgrade%20PDFs/Elecraft%20Low%20Frequency%20Audio%20Mods%202008_1.pdf http://dl.dropbox.com/u/1493706/K3/K3%20DSP%20Upgrade%20PDFs/Elecraft%20Low%20Frequency%20Audio%20Mods%202008_2.pdf or shortened versions of the same 4 links http://tinyurl.com/25vrfa2 http://tinyurl.com/2gyxb5p http://tinyurl.com/2detvx3 http://tinyurl.com/2bbgev7 Hopefully one of these forms works for people... -- Forwarded message -- From: Brett Howard br...@livecomputers.com Date: Sun, Jul 4, 2010 at 3:32 AM Subject: Re: [Elecraft] K3 DSP Board Upgrade Info To: Andy Wood vk...@woodtech.net.au Cc: elecraft@mailman.qth.net Here are the files that Andy has put together. I'm sure they'll prove useful to some: Elecraft Low Freq. Mods 2010_1 Elecraft Low Freq. Mods 2010_2 Elecraft Low Freq. Mods 2008_1 Elecraft Low Freq. Mods 2008_2 ~Brett (N7MG) __ 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) Saving and Recalling M1-M4 per-band quick memories
Ok not sure if I am understanding this wrong or not... But I've configured my M1-M4 as follows: M1 = 14.0 - 14.15 - CW mode - width 350Hz M2 = 14.15 - 14.35 - SSB mode - width 1.5K w/ a shift of .95 M3 = 14.03 - 0.000 - Data Mode (FSK D) - width 500Hz Dual PB M4 = 14.03 - 14.06 - Data Mode (PSK D) - width 1.5Khz I was then able to recall these just fine... However as soon as I tapped HI/WIDTH twice to view the width it would then update the passband icon and show the BW to be 500Hz. Then subsequent recallings of M4 recall the memory with a 500Hz BW. Does seem like something is slightly amiss there... ~Brett (N7MG) On Sun, Jul 4, 2010 at 3:04 PM, d_jo...@sympatico.ca wrote: Perhaps someone can clarify / correct my use of the per-band quick memories. I'm using M1 to M4 to save sub-band frequencies and filter positions with BW settings in each of the bands 160 thru 10 and having a problem. Installed roofing filters are 2.8, 1.8, 1.0, 400 250. Firmware is 4.03 / 2.60. For example on 20 Meters if I save 14,010 and BW of 450 using FL4 with VM, M1 - I can recall it correctly with MV, M1. If I save 14,195 and BW of 2.1 using FL1 with VM, M3 - I can recall it correctly with MV, M3. The problem is with two data modes memory settings on 20M at M2 M4. If I save 14,080 and BW of 450 (and dual passband) using FL4 (for RTTY) - that saves and recalls correctly to / from M2. However, if I save 14070 and BW of 3KHz (for PSK) using FL1 and save it to M4, then go to one of M1, M2 or M3 freq BW set and then try to recall M4 it comes up at the correct frequency but the filter BW is now back to 450 Hz using FL3 (the setting I used for M2). (The filter graphic seems to be correct but the actual filter is not as previously set.) It seems that there is only one allowed set of BW and Filter setting for the two Data modes. (I'm using FSK-D for RTTY and PSK-D for PSK). Can anyone offer an explanation or correction of what what I'm doing wrong? Or is this a limitation of what can be saved in the memory positions M1 - M4? The manual isn't really too clear on this level of detail. Thanks 73 Doug VE3MV K3/100 s/n 2432 __ 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] Auto Bandpass Filter
Ok so I'm looking for an auto band pass filter to use with the K3... Would be slick if the filter could be interfaced directly to the K3 but I'm planning on needing a band decoder/smart switch for different widgets later in life that I've been planning on starting so this may be the opportunity for that project to need to start. Anyway I've been trying to find all my options and some pros/cons of the different solutions from people who have experience with them. These are the units I've found... Please let me know if you have experience with these such as ease of interfacing, build quality, power handling, longevity, loss, out of band attenuation and what not. Array Solutions FilterMAX II: http://www.arraysolutions.com/Hamation/bandpassfilters.htm#top%20of% 20page Array Solutions Filter Master (FM-6): http://www.arraysolutions.com/Products/wx0bbpf6.htm I.C.E. 419B http://www.iceradioproducts.com/filtersrf.html#3 DuneStar Model 600: __ 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] Auto Bandpass Filter (sorry sent too soon)
Ok so I'm looking for an auto band pass filter to use with the K3... Would be slick if the filter could be interfaced directly to the K3 but I'm planning on needing a band decoder/smart switch for different widgets later in life that I've been planning on starting so this may be the opportunity for that project to need to start. Anyway I've been trying to find all my options and some pros/cons of the different solutions from people who have experience with them. These are the units I've found... Please let me know if you have experience with these such as ease of interfacing, build quality, power handling, longevity, loss, out of band attenuation and what not. Array Solutions FilterMAX II: http://www.arraysolutions.com/Hamation/bandpassfilters.htm#top%20of%20page Array Solutions Filter Master (FM-6): http://www.arraysolutions.com/Products/wx0bbpf6.htm I.C.E. 419B http://www.iceradioproducts.com/filtersrf.html#3 DuneStar Model 600: http://www.dunestar.com/model600.htm Well crud I ended up sending too soon (hit ctrl+enter on accident) Anyway I've considered the FilterMAX II as it seems to be the best built with a nice modular filter replacement scheme but its the most expensive. I wish that they were a bit more informative in the manual and explained what the pinouts were and how the thing determined what band to be on. The switches mentioned don't really make a whole lot of sense as there are more positions mentioned than one can hold as far as filters... Confusing to say the least but I'm sure once I had one in hand I could figure it out. Then there is the filter master 6 which is a slick little idea in that its just a coax switch essentially and then one can use individual filters from Dunestar, ICE, or Array Solutions (I'm sure there are others that I'm forgetting and I'd like to know about)... I have the same gripe about not explaining the pin outs here but I'd bet it has the same configuration as the FilterMAX II Then there is the I.C.E. 419B which seems like its awfully small in comparison to some of the other units. I begin to wonder about its power handling but I have a friend who has their individual filters and seems quite happy with them. I don't think he uses them very often though so I don't know about longevity really or about power handling all that much. I do mostly CW but would also like to be able to use this system during a RTTY contest at 100W. Finally the Dunestar model looks like its ok however power ratings seem a bit scary. All they state is that the filters are intended for use wiht transceivers and then state that this is not to imply a 100% duty cycle. What the heck does that mean? Anyway input is greatly appreciated. __ 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] 6M CW
Heck I guess I'll stop doing that... I've just kinda learned from listening to the bands. I'm finally getting my speed up fast enough that actually carrying on a QSO is possible. At 8WPM your RST, Name, QTH, RIG and ANT is a 30 to 40 minute conversation. ;) However at 13WPM I've been able to actually have conversations with people about the K3 find out that they've recently retired and what they used to do and well all sorts of fun stuff... (I'm referring to a 40 minute conversation that I had on 40 last night...) Then heck I ran into a guy the other day who was only about 20 minutes bike ride from here. We ended up having a 1.6 hour or so QSO. Both of our brains were going to mush by the end as we were both working hard for it but hey its fun! I'm by no means an old salt at the age of 29 but I do try to be polite and do find it fun to get into the longer QSO's via CW. I often find that SSB bores me for casual operating but I do find SSB interesting for contests. But anyway just wanted to let you know that your post has hit home with someone and I'll start sending my call a few times when answering a CQ... I usually figure that I want to try and get in there quick before their auto repeat kicks in Then if they need a fill we can always take care of that later. Guess I've been being rude all this time and had no idea. Sorry... ~Brett (N7MG) On Mon, 2010-07-05 at 16:13 -0500, Sandy wrote: This phenomenon is not restricted to 6 meters! The same thing happens on HF as well: people looking for club numbers, grid squares, counties,etc., etc. The whole contest mentality has corrupted all the old and polite methods of establishing a QSO when there are no contests at all! Also the Elmers of today, aided and abetted by the ARRL, have all but completely eliminated the normal calling protocols of yesteryear. It isn't at all unusual to tune up and send a few V's and have someone just drop their callsign on you just ONCE! As I now an old timer in age and amateur radio, I wonder when this happens. Is this chap calling me? Is he just testing? Even if you send QRZ? de W5TVW K you may just get a callsign sent ONCE! Also people sending: DE W4ABC instead of calling CQ. Newer QRPers answering a CQ call just sending their callsign just ONCE! There isn't that all important OPERATING section still published in the Handbook! Guess the folks at ARRL thought they could make a few extra bucks by publishing a special book dealing with that subject that obviously everyone ISNT buying! I enjoy contests on CW doing QRP and usually these are limited to a small segment of the CW sub-band, and they don't seem to be on every weekend. 6 meters used to be a really fun band back in the AM phone days, but I didn't figure it would be degraded to nothing but hello, goodbye type contacts. Sorry for this, guess I sound like a grouchy old fart but where has all the politeness gone? 73, Sandy W5TVW - Original Message - From: WILLIS COOKE wrco...@yahoo.com To: Jim Brown j...@audiosystemsgroup.com; elecraft@mailman.qth.net Sent: Monday, July 05, 2010 2:29 PM Subject: Re: [Elecraft] 6M CW I don't feel that way at all. A contact in which only grids are exchanged leaves me with little satisfaction at all. I at least like to exchange names and QTH. I get enough of the quicky QSOs with contests. I don't need more on six meters or digital contacts. I know I am out of step with the avant guarde, but I don't enjoy six meters much because of these quick exchanges. Willis 'Cookie' Cooke K5EWJ From: Jim Brown j...@audiosystemsgroup.com To: elecraft@mailman.qth.net elecraft@mailman.qth.net Sent: Mon, July 5, 2010 10:41:55 AM Subject: [Elecraft] 6M CW On Mon, 5 Jul 2010 08:29:08 -0700 (PDT), Ken McGuire wrote: I was frustrated at how slow the chats were on SSB (FM was even worse) - it seemed like they were wasting a perfectly good band opening ragchewing Yep. Same here. Often, an opening on any given path may be there only long enough to exchange the grid and report. It's quite frustrating to wait to call a station that was S9, then S7, then S5, then S3, then fumes, while the time is filled with innanity. When I turned down to the CW portion of the band, it almost sounded like a CW contest weekend. Yes. I've gotten to the point that I spend most of my 6M efforts on CW, only tuning up to the SSB portion of the band when nothing is happening on CW. And thanks in part to the proliferation of K3s, there is a lot more CW activity than there was only 5 years ago. 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:
[Elecraft] YABD - (Yet Another Band Decoder)
Ok so I've been looking at setting up a set of bandpass filters that are automatically selected based on the K3's VFO. I'd like later flexibility to grow this into a much more complicated system with possible antenna switches and amplifiers... I know that everyone has a different setup with their own requirements and everyone wants things a little different. So I thought that building a band decoder would be fun. I'm planning on building the band decoder using an ARM Coretex M3 processor running at 48Mhz. This project is planned to be done completely openly. I'm starting a web page for the project here (http://k3decoder.googlecode.com). There you can see the beginnings of the board that we're going to start with. I've got documentation on the board as well as the processor that resides on this board. I've also placed links to the operating system we're planning on running as well as the schematic capture and layout tools we're planning on using. These tools are still preliminary and we're willing to take suggestions. The engineering requirements for the 1.0 release of the software is being put together in wiki form here (http://code.google.com/p/k3decoder/wiki/EngineeringRequirementsRel1_0). Anyone who wishes can leave comments on these requirements. We'll discuss it and determine how things should look. I should be getting the first development platform here in a few days and will get started publishing code out to the site that anyone will have access to via SVN. While the code will be open to anyone to capture and view during the process we're probably going to not accept contributions or patches against the source until the 1.0 release milestone is reached. The development platform can be purchased for $60USD. From there there will be a driver board that a schematic will be created for. This driver board will connect to the .1 header location at the bottom of the development platform. All parts will be purchasable through DigiKey and part numbers/links to the order pages will be documented to make it easy for anyone to build one of these and get the software loaded into it. I'd greatly appreciate any and all input on what should be included in a basic band decoder in order to be considered a successful 1.0 release. If there thoughts and inputs that are beyond initial scope perhaps I'll start a 2.0 milestone requirements document for further discussion. Thanks much! ~Brett (N7MG) __ 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] YABD - (Yet Another Band Decoder)
Yes we're kinda modeling this to be an open source version of the KRC2. Essentially so that anyone can put one together themselves if they wish. So imagine it kinda like the KRC2 (except with an OLED display) and the hood is up so people can cheer and jeer about how it works and see things get updated and change. Not to mention that if they want to try and help they can get access to the code and make improvements that everyone can take advantage of. There is a section on the project page where if someone finds an issue they can submit their issue. This is the list that keeps getting talked about so much as far as K3 development stuff. On this the list will be public so that anyone who wishes to can put up their issues. These issues can then be assigned to people and updates can be put into these issues. In other words if another user finds another way to replicate the issue they can add that information to the issue. As well when a developer makes a change they can post the status of their work to that issue and anyone who wishes to be notified regarding changes to any issue can subscribe and receive an email on any new information. ~Brett (N7MG) On Wed, Jul 7, 2010 at 2:34 PM, Don Wilhelm w3...@embarqmail.com wrote: Brett, Can I put in a plug for the Elecraft KRC2? It may provide a bit more flexibility down the road for you. It is a band decoder and more. Maybe not for you because this sounds like something you really want to create, but others may not be as ambitious. 73, Don W3FPR Brett Howard wrote: Ok so I've been looking at setting up a set of bandpass filters that are automatically selected based on the K3's VFO. I'd like later flexibility to grow this into a much more complicated system with possible antenna switches and amplifiers... I know that everyone has a different setup with their own requirements and everyone wants things a little different. __ 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 and USB Audio Codec
No the K3 already has transformer isolated line in and line out connections. These make for very simple connections to onboard sound cards and if you need an outboard sound card with just two 3.5mm audio ports these can be had for less than 20 bucks online. Keeping things in this fashion keeps the higher noise digital equipment outside of your highly sensitive receiver. ~Brett (N7MG) On Sat, 2010-07-10 at 14:50 +0200, Dr. Werner Furlan wrote: This is a question to the development team: are there any thoughts or possibilities to add a USB port to the K3 or P3 which could introduce a USB soundcard to the K3 like it is in the IC-7200 or the upcoming TS- 590s (?) 73! de Werner OE9FWV __ 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 and USB Audio Codec
I've got a sound good sound card that I just installed into the computer and it already is very easy to use digital modes with the K3 without an external device. ~Brett (N7MG) On Sat, 2010-07-10 at 12:48 -0700, oe9fwv wrote: I don't trust the quality of an external soundcard of this price. It might be sufficient for PSK31 but probably not for Winmor. The Signalink USB is good, but not for 20 bucks. I have not heard of a problem with the DSP in the IC-7200 or 7600. From what I have heard this is not a real soundcard but the IF passband after the DSP is sent to the audio codec via USB. It would make it very easy using the K3 for digital soundcard modes without another external device. 73! de Werner OE9FWV __ 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] continuous relay click in RX ANT IN
I had this going on too and a really slick way to fix the problem is with an RF limiter... http://www.iceradioproducts.com/reconly.html#rflimiter I.C.E. makes a very cost effective unit that gets the job done very well... I ordered the 196 unit and then I didn't want to have it with RCA connectors on it so I asked them to build it wit the BNC connectors like they do on the VHF unit. They had no problem with that and did so no extra cost. ~Brett (N7MG) On Sun, 2010-07-11 at 18:27 -0300, Jorge Diez - CX6VM wrote: ems is the proximity of the antennas. I was using a sloper for 160 mts from a 118ft tower and the 40-2CD was on top of this tower. So I couldn´t connect the 40-2CD in the RX ANT IN. So I switch the knob in my sixpack to listen in the 40 and then switch again to TX on the 160 antenna, hope this will not cause a problem in the rig? Thanks! __ 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 and USB Audio Codec
You're still not going to get access to both IFs at the same time though... ~Brett (N7MG) On Wed, Jul 14, 2010 at 4:40 PM, Edward R Cole kl...@acsalaska.net wrote: I have kind of ignoring this thread, but just realized that it addresses a long-term desire of mine. I would like to tap the IQ data for both the main and sub receivers simultaneously for pc processing with special eme sw. I can do one channel using the SDR-IQ but there are advantages to having two channels (polarity diversity reception). Both channels need to be phase-locked in freq. My discussions with Wayne indicate that it may be possible interface at a later time thru the P3. To take advantage of the 15-KHz SDR in the K3 this interface will eventually very desirable. That opens the K3 to equal footing with other SDR's to fulfill the no obsolescence promise of SDR. 73, Ed - KL7UW -- Message: 6 Date: Tue, 13 Jul 2010 10:10:17 -0700 From: Kok Chen c...@mac.com Subject: Re: [Elecraft] K3 and USB Audio Codec To: Elecraft Reflector elecraft@mailman.qth.net Message-ID: 2e745a19-d7ed-4bb1-a9c6-d7080d6e1...@mac.com Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes On Jul 10, 2010, at 7/10 2:57 PM, Joe Subich, W4TV wrote: If one were going to provide digital output, it would be far better to stream the raw in I/Q data from the DSP's ADC via firewire rather than push it through two additional A/D and D/A steps and reduce it to a single channel of audio. FireWire is not necessarily a great solution either. It will definitely require special drivers at the computer end (viz, the Edirol FA-66 that is common in ham SDR circles). One good connection that I have come across is S/PDIF that is available on the Icom IC-7800. It allows a connection between the radio and the computer that is completely non-galvanic. No ground loops, no RFI, down to -144 dB. S/PDIF provides an audio path with up to 20 bits of resolution (about 120 dB, with 1 bit being 6.02 dB), with 24 bits being an option by using the extra 4 steering bits as data. The standard sampling rate for S/PDIF is 48,000 samples per second stereo, which would support almost 50 kHz of bandwidth on an baseband I/Q channel. S/PDIF provides up to about 30 feet separation between equipment. Both Firewire and S/PDIF lacks a standard way of passing control/ status signals. The Flex-5000 (which uses FireWire) used to hack into the MIDI (Musical Instrument Digital Interface) channel for control/ status; but I have not been following that development and it might have since changed. The Icom IC-7800 goes through its regular CAT path (RS-232 or CI-V, you get to choose, I believe). In any case, if you want a rig like the K3 to support 123 dB of dynamic range I/Q output, it will not come cheap. The Asahi AK-5394A is probably the most expensive component in the front end of the Flex-5000, and you have to be very careful with the circuit layout to get a -125 dB noise floor when mixing analog and digital components. We are definitely not talking about 16-bit codecs like the one in the SignaLink USB -- which by the way, is a TI/Burr-Brown PCM-2902, and it is not the $20 that people have been mentioning, but is $5.85 at DigiKey :-). 73 Chen, W7AY 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 144-QRT*, 432-100w, 1296-QRT*, 3400-fall 2010 DUBUS Magazine USA Rep dubus...@hotmail.com == *temp __ 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 on Order
The main reason why most devices take DC in rather than bringing in direct AC is because they can pass all the safety work on to the brick manufacturer and it saves them a lot of money in the regulatory end. ~Brett (N7MG) On Fri, Jul 16, 2010 at 9:08 AM, Paul Christensen w...@arrl.net wrote: Sharing a single power supply between the transmitter and accessories is a very good way to create RFI (even with a dummy load) due to the pin 1 problem in nearly every amateur rig ever built. I completely agree with Joe, but I'm guilty of using a common supply for the K3 and switching-type accessories. However, if a common supply is used with a distribution block, consider connecting the K3 direct to the power supply terminals and not a port on the distribution block. Then, if a power distribution block is used, route accessories from the power supply terminals to the block, especially if one is insistent on running audio accessories from the +12V bus. The W2IHY products can be powered by +12V and seem to be very popular. When using a W2IHY device, it would be better to use the supplied wall-wart than be tempted to use a common +12V power bus. If I was designing a similar device, I would rather design it for use with an AC wall transformer (AC in/out), then rectify and filter inside the audio device. The added benefit is that bi-polar supply rails can be easily created with an AC input. Paul, W9AC. __ 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 DVR question
I don't think there is currently a way to do this. Your best bet is to email Wayne and ask that it be added to the list. ~Brett (N7MG) On Fri, 2010-07-16 at 20:41 -0400, Gary Dezern wrote: Anyone? On Jul 10, 2010, at 4:05 PM, Gary Dezern wrote: I just installed the DVR module in my K3, and I have a question on how to use it: I like leaving the AF REC turned on full time, as I find it very useful to instant reply a call sign or something else significant I also like using the voice memories - for example kilo three whiskey oscar whiskey is probably permanently recorded as M1. Those two items, however, seem to not work well together. If I have AF REC turned on, when I press M1, instead of the radio TX'ing my callsign, the radio just mutes for a few seconds without transmitting anything at all (and it has the side effect of turning OFF the AF REC.) (If I turn AF REC off first, the M1 memory works as expected.) Is there any way to use the voice memories while also recording via AF REC? Thanks Gary / k3wow __ 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] SO-239 Connector Selection
Ok figured I'd ask here and see if someone had some input on the differences here. Hopefully someone has done more design with these than I... My application is that I'm looking for connectors to install on some high end home made band-pass filters. 83-1R; http://www.mouser.com/ProductDetail/Amphenol-RF/83-1R-SO-239/?qs=sGAEpiMZZMtqi3rrGzC6kucWGwVoNS6TyriIimuNw9A%3d 83-1R-RFX: http://www.mouser.com/ProductDetail/Amphenol-RF/83-1R-RFX/?qs=sGAEpiMZZMtqi3rrGzC6kqBNVAfbUIcAaUNmqqZ3zpA%3d 83-798: http://www.mouser.com/ProductDetail/Amphenol-RF/83-798/?qs=sGAEpiMZZMtqi3rrGzC6kptFUq3vT%252bWoMcHyGEmWyaU%3d The 83-1R is a number I've seen a lot in usage and its the connector I'm leaning toward. It is also the cheapest of the 3. I know they are all going to be good connectors but is there any benefit to going with the other two versions? I believe that the RFX version is a commercial version of the same thing (at only 20 cents more) but I don't know what the difference is. Finally the 83-798 claims to be an SO-239A connector... I tried doing a search for SO-239 vs SO-239A and in a quick gander didn't turn up much... Any input would be appreciated. Thanks ~Brett (N7MG) __ 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] SO-239 Connector Selection
Based on W3NQN's filters and rated for 200W. Makes sense on the teflon insulator... I assume that that only makes the difference when doing higher power? I do think that whenever I'm making an antenna that is to have a connector blow torch soldered to a copper pipe or something I'm going to buy one of those! Now I just wonder what the difference in the small price jump delta between RFX and non RFX is... ~Brett (N7MG) On Thu, Jul 22, 2010 at 6:34 AM, Bob Naumann w...@w5ov.com wrote: The 83-798A has a Teflon insulator - this is what makes it different. They're all equivalent for low frequency, low power (200w) work which I presume your bandpass filters will be. High-End? What design? -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Brett Howard Sent: Thursday, July 22, 2010 8:22 AM To: elecraft Subject: [Elecraft] SO-239 Connector Selection Ok figured I'd ask here and see if someone had some input on the differences here. Hopefully someone has done more design with these than I... My application is that I'm looking for connectors to install on some high end home made band-pass filters. 83-1R; http://www.mouser.com/ProductDetail/Amphenol-RF/83-1R-SO-239/?qs=sGAEpiMZZMt qi3rrGzC6kucWGwVoNS6TyriIimuNw9A%3d 83-1R-RFX: http://www.mouser.com/ProductDetail/Amphenol-RF/83-1R-RFX/?qs=sGAEpiMZZMtqi3 rrGzC6kqBNVAfbUIcAaUNmqqZ3zpA%3d 83-798: http://www.mouser.com/ProductDetail/Amphenol-RF/83-798/?qs=sGAEpiMZZMtqi3rrG zC6kptFUq3vT%252bWoMcHyGEmWyaU%3d The 83-1R is a number I've seen a lot in usage and its the connector I'm leaning toward. It is also the cheapest of the 3. I know they are all going to be good connectors but is there any benefit to going with the other two versions? I believe that the RFX version is a commercial version of the same thing (at only 20 cents more) but I don't know what the difference is. Finally the 83-798 claims to be an SO-239A connector... I tried doing a search for SO-239 vs SO-239A and in a quick gander didn't turn up much... Any input would be appreciated. Thanks ~Brett (N7MG) __ 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] Repair backlog catch-up ...
Rene put in a few weekends to get things down to that... The guy's dedicated! Fun guy to talk to... But you end up finding a lot of guys like that in this hobby! Thanks Rene! ~Brett (N7MG) On Thu, 2010-07-22 at 14:34 -0400, w0...@aol.com wrote: This week I sent my K3 for a factory update inasmuch as 4500 K3s have been built since mine. The pleasant surprise was being told July 19 by Elecraft's Ms. Madelyn the turn-around would be two weeks. Thanks, Elecraft crew, one and all! Bill, W0WOI __ 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 Feature Request - Stopping CW Memory Playback with PTT
While this is true I still feel that any KEY_IN source be it PTT or VOX or the paddles it should interrupt the memory keyer. ~Brett (N7MG) On Fri, 2010-07-23 at 02:53 -0500, Bob Naumann wrote: The paddle is the most logical device to use to stop the CW from the radio's memories. In a contest, you should probably be using the CW sending capability of your logging program instead of the radio's memories as it most likely allows hitting of the Esc key on your keyboard to stop the CW which I'm sure you'd find more convenient. 73, Bob W5OV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Andy Wood Sent: Thursday, July 22, 2010 9:57 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K3 Feature Request - Stopping CW Memory Playback with PTT I have recently entered into the world of CW and participated in my first contest using both SSB and CW modes. I noticed that you cannot stop the CW memory playback by activating the PTT (either from a microphone attached to the front panel or a footswitch plugged in the rear). It could only be stopped by touching the paddle. Could this be implemented in a future firmware version? There is also the possibility that there may be a very good reason not to. Andy VK4KY __ 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] Balun Questions
I'll preface this by explaining that I'm a digital guy and I've lately decided I want to get a little better understanding of magnetics and RF... Thus why I'm taking on making my own W3NQN band pass filters and I've also been interested in building a Balun... So I've looked at a few sites describing how to make a 4:1 balun... One such solution is to take 2 100 ohm 1:1 baluns and connect them in parallel on the input side and in series on the output side... I looked at the Elecraft BL1 manual but I didn't see what material the core was... However in another article I saw someone post the recommend getting a FT140-61 and winding 7 to 8 turns on each side to make the two 100 ohm feedlines. So I ran the numbers and 8 turns on a FT140-61 gives you about 100 ohms on 160 meters. Thus two 100 ohm points in parallel gives you 50 ohms in and 200 ohms out. 4:1... Great. However at say 40 meters... Each feedline is 430 ohms. Thus you've got a 215ohm input and a 860 ohm output. This just seems like it would make a mess. Why does it still work? Finally I'll explain my final goal... I've looked at several ways to make a 4:1 which involves using two 1:1's. Then there are methods to take 2 4:1's to make a 6:1 (the feedlines are 125ohm windings to pull this off). My final goal is to try to make a 6:1 and use it to use ladder line once I get through the wall with coax. I always just figured that a 6:1 would be better as it would have a 50 ohm in and a true 300 ohm out. However once you get away from the design frequency the feed impedances go to pot... So is there really much difference in the 6:1 and the 4:1? I've read of many people doing what I'm talking about with a 4:1 and just figured that a 6:1 should provide a better match... Am I thinking right or is the match so terrible anyway that it doesn't so much matter? Is it just that the thing balances the currents on the outputs and I'm just over thinking the matching ability? Appreciated gentlemen. ~Brett (N7MG) __ 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] Balun Questions
This sounds really similar to a lot of plans that I've seen... One other piece that I've noticed on many of these that no one seems to ever mention is that the two 1:1's are usually wound in opposite directions on each half of the core... I'm assuming this helps to reduce the coupling between the two 1:1's? Also I'd be interested to hear people's thoughts on this improved balun... Seems to be an attractive solution. It only pictures the schematic here and I kinda picture it as being wound similarly but you wire one of the turns on one of the feeds from out side to in side. Essentially the ends of the wires would fold back over the core to get to its location... Soon here I should have all sorts of cores and wire and I was planning on trying a few of these and measuring them with the 259B and seeing how they come out. But to go beyond that I'll need some sort of antenna probably to do further testing cause I don't have enough loads nor do I have a 200ohm dummy... ;) I'll be ordering the Sevik book as well... Thanks gentlemen. ~Brett (N7MG) On Fri, Jul 23, 2010 at 9:38 AM, Jim Brown j...@audiosystemsgroup.com wrote: On Fri, 23 Jul 2010 06:34:54 -0400, Tom W8JI wrote: The 100 ohms is the differential impedance, or transmission line impedance Tom is the balun expert around here, but he isn't telling you everything he knows, so I'll float a simple 4:1 balun design that should work quite well up to moderate power levels. As Tom's analysis shows (on his link), there are conditions of use where high power can overheat it. So to respond to your question with a direct answer, for a 4:1 balun, I would build it from two common mode chokes, each choke wound on its own 2.4-inch o.d. #31 toroid. Each choke needs 14 bifilar turns of #14 THHN. As you have noted, the chokes should be wired in parallel on the 50 ohm side and in series on the 200 ohm side. One of the important conditions that makes this work (or not work) is that the common mode impedance must be quite high to prevent the choke from overheating, and to minimize power loss. These chokes provide nearly 5000 ohms common mode impedance from 2-30 MHz. The impedance is predominantly resistive. Bifilar means that you form a transmission line from two equal lengths of the #14 THHN, tightly spaced so that their insulation touches, and either tape them together or hold them together with Ty-wraps, then wind that parallel wire transmission line around the toroid. You'll need 2.5 inches of each wire per turn, plus 5 inches for connections at the ends, then cut off the excess after winding. Sevick said that such a line is pretty close to 100 ohms, and my measurements suggest that he was right. Two of these in series/parallel gives you a pretty good 50:200 balun. What are conditions that can overheat it? Running high power (greater than about 500 watts) AND in a condition that places high common mode voltage on it. You might also get into trouble at somewhat less power with key-down modes like RTTY. High common mode voltage will be present if the antenna is severely unbalanced (for example, an off-center fed antenna), or if the transmission line is close to a half wave (or multiple of half waves). At low power, you'll never run into a situation that will overheat a balun like this, but you could when running high power. There's a tutorial on my website that talks extensively about common mode chokes. It is NOT about baluns, and I don't pretend to be an expert on baluns, but I do know a lot about common mode chokes. :) http://audiosystemsgroup.com/RFI-Ham.pdf 73, Jim Brown 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
Re: [Elecraft] OT: SO-239 Connector Selection
I ended up getting the commercial version of the connector. There was the cheapest one the commercial one that was only a very small amount more and then the top one which was quite a lot more... All three were Amphenol connectors and I'd already gone to buy Amp but it was just coming down to which one... It appears that they all have different dielectrics (they mention different values) but I didn't really find a whole lot on the differences between these dielectric types. ~Brett (N7MG) On Fri, Jul 23, 2010 at 2:02 AM, Edward R. Cole kl...@acsalaska.net wrote: Since most of you are talking about HF, I suppose they are fine. Professionally, I had the most quality control issues with PL-259's. I quickly decided that only Amphenol brand were to be bought. They had much better plating for soldering. The problem usually came from the extra heat required to solder the shield. Very easy to melt the insulation. All our antenna were specified with N-connectors which have gaskets the provide some wx sealing. Of course we double taped connections that would be outside. Anything that requires good impedance match will do better with N, TNC, or 7/16 style connectors. All my cables even down to 500-KHz use N-connector except where connection with a radio or commercial antenna come with UHF. 73, Ed - KL7UW at 1296 up I often use sma connectors on low-power equipment. -- Message: 13 Date: Thu, 22 Jul 2010 17:54:43 - From: Ken Kopp k...@rfwave.net Subject: [Elecraft] OT: SO-239 Connector Selection To: elecraft@mailman.qth.net Message-ID: acdef2099be54aadb7632b69e498b...@shack Content-Type: text/plain; format=flowed; charset=iso-8859-1; reply-type=response My experience with SO-239' / PL-259's -was- at VHF and UHF, and I said so in my posting. I was made aware of this when the Colorado Springs radio club ordered a 4-port divider to feed their 2M repeater's antennas and they specified / insisted on me building it with SO-239's. I shipped it and within a few days they were complaining of high SWR. Before getting the original one back I built and shipped a second unit, only to get the same report. It was only when I built the 3rd unit with N's did it work correctly. My friends at the NBS labs ... who originated NBS yagi design (W0PW / W0EYE) ... along with the particular power divider design ... explained what was going on. The non-50 ohm SO-239's connected to the 35 ohm transmission line / power divider were influencing the impedance of divider. My years at CU's radio astronomy lab and the NBS cafeteria represent some of the best learning in my career. I learned much via napkin tutoring done by some of the nation's best radio minds. 73! Ken Kopp - K0PP 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 144-QRT*, 432-100w, 1296-QRT*, 3400-fall 2010 DUBUS Magazine USA Rep dubus...@hotmail.com == *temp __ 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] Balun Questions
Ok I was referring to a design that was using one core to make a 4:1... I think the caveat that was being used was that they felt they could do this and be safe enough with it still being a balun as long as the load was floating (but I'm not 100% sure thats really the case)... So is a multi aperture core good enough for that or would two toroids be a better idea? ~Brett (N7MG) On Fri, Jul 23, 2010 at 11:00 AM, Tom W8JI w...@w8ji.com wrote: This sounds really similar to a lot of plans that I've seen... One other piece that I've noticed on many of these that no one seems to ever mention is that the two 1:1's are usually wound in opposite directions on each half of the core... I'm assuming this helps to reduce the coupling between the two 1:1's? Also I'd be interested to hear people's thoughts on this improved balun... Seems to be an attractive solution. It only pictures the schematic here and I kinda picture it as being wound similarly but you wire one of the turns on one of the feeds from out side to in side. Essentially the ends of the wires would fold back over the core to get to its location If you are talking about two cores in the balun, and each core wound with half turns and then flipped with a transposed winding, everyone who has measured the fancy winding concludes it does nothing overall except move things around. If you are talking about winding two 1:1 baluns on a single common core and using that to make a 4:1 current balun, I can guarantee you that will not be a balun. It will unbalance any balanced load placed on the balun's balanced terminals. Each transmission line transformer has to be on its own independent core. They cannot share a common flux path. 73 Tom __ 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] Balun Questions
I've heard a lot of really great things about balun designs products... And in looking at their 4:1 for dipoles and yagi's it looks like they are simply doing 2 1:1 baluns on a single core. Looks to me like they are even wrapped in the same direction and paralleled on one side then series on the other end. http://www.balundesigns.com/servlet/the-56/current-balun-4-cln-1-designs/Detail However their more general one: http://www.balundesigns.com/servlet/the-69/4-cln-1-balun/Detail I can't really trace out how its wired up... ~Brett (N7MG) On Fri, Jul 23, 2010 at 11:00 AM, Tom W8JI w...@w8ji.com wrote: This sounds really similar to a lot of plans that I've seen... One other piece that I've noticed on many of these that no one seems to ever mention is that the two 1:1's are usually wound in opposite directions on each half of the core... I'm assuming this helps to reduce the coupling between the two 1:1's? Also I'd be interested to hear people's thoughts on this improved balun... Seems to be an attractive solution. It only pictures the schematic here and I kinda picture it as being wound similarly but you wire one of the turns on one of the feeds from out side to in side. Essentially the ends of the wires would fold back over the core to get to its location If you are talking about two cores in the balun, and each core wound with half turns and then flipped with a transposed winding, everyone who has measured the fancy winding concludes it does nothing overall except move things around. If you are talking about winding two 1:1 baluns on a single common core and using that to make a 4:1 current balun, I can guarantee you that will not be a balun. It will unbalance any balanced load placed on the balun's balanced terminals. Each transmission line transformer has to be on its own independent core. They cannot share a common flux path. 73 Tom __ 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] Balun Questions
Interesting enough his high power one uses two cores and appears to be made the same as the budget one that is wound on one core... Seems like stacking them on top of one another is going to just couple them and hinder your isolation but maybe I'm wrong there http://www.balundesigns.com/servlet/the-78/4-cln-1-dual-core-current/Detail ~Brett (N7MG) On Fri, Jul 23, 2010 at 11:31 AM, Tom W8JI w...@w8ji.com wrote: Ok I was referring to a design that was using one core to make a 4:1... I think the caveat that was being used was that they felt they could do this and be safe enough with it still being a balun as long as the load was floating (but I'm not 100% sure thats really the case)... I can 100% guarantee you that does not balance the load. I know the design comes from a source considered reliable, but it is seriously flawed. If you want a balanced voltage and/or current into a feedline and a real antenna, it cannot happen with that design. It not only does not work in theory, I have dozens of actual measurements to support it does not work in the real world. So is a multi aperture core good enough for that or would two toroids be a better idea? So long as the multi-aperture core does not have mutual coupling between the individual transmission line cores, it would work. Unfortunately that is not likely either. :-) 73 Tom __ 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] Balun Questions
Just bought the last copy of this book that Amazon had in stock for 17.95 + 3.99 in shipping. Looks like it will be a very nice reference to have on the shelf... Thanks! ~Brett (N7MG) On Fri, Jul 23, 2010 at 5:21 AM, WILLIS COOKE wrco...@yahoo.com wrote: Brett, I would recommend the Book Understanding, Building and Using Baluns and Ununs by the late Jerry Sevick, avaliable from CQ http://store.cq-amateur-radio.com/Categories.bok?category=Books%3AAntennassearchpath=1547318start=10total=17 With this book, a BS in Physics, 54 years as a ham and 30 years as an EE I finally understood enough to make a balun or an unun. I don't understand them well enough to answer your questions correctly. I read all the stuff I could find on the internet and 50 years of ham magazines before I bought the book and was still too confused to pick a core and build the unun that I needed. If you just want a 4:1 balun and don't want a study course, I would recommend that you buy one. If you really need one that works 160 to 10 buy an expensive one from a good source, the ones that I tested did not have the advertised bandwidth. I did not test the Elecraft balun, but what I have seen of Elecraft engineering would give me confidence to try one. Willis 'Cookie' Cooke K5EWJ From: Brett Howard br...@livecomputers.com To: elecraft elecraft@mailman.qth.net Sent: Fri, July 23, 2010 3:53:42 AM Subject: [Elecraft] Balun Questions I'll preface this by explaining that I'm a digital guy and I've lately decided I want to get a little better understanding of magnetics and RF... Thus why I'm taking on making my own W3NQN band pass filters and I've also been interested in building a Balun... So I've looked at a few sites describing how to make a 4:1 balun... One such solution is to take 2 100 ohm 1:1 baluns and connect them in parallel on the input side and in series on the output side... I looked at the Elecraft BL1 manual but I didn't see what material the core was... However in another article I saw someone post the recommend getting a FT140-61 and winding 7 to 8 turns on each side to make the two 100 ohm feedlines. So I ran the numbers and 8 turns on a FT140-61 gives you about 100 ohms on 160 meters. Thus two 100 ohm points in parallel gives you 50 ohms in and 200 ohms out. 4:1... Great. However at say 40 meters... Each feedline is 430 ohms. Thus you've got a 215ohm input and a 860 ohm output. This just seems like it would make a mess. Why does it still work? Finally I'll explain my final goal... I've looked at several ways to make a 4:1 which involves using two 1:1's. Then there are methods to take 2 4:1's to make a 6:1 (the feedlines are 125ohm windings to pull this off). My final goal is to try to make a 6:1 and use it to use ladder line once I get through the wall with coax. I always just figured that a 6:1 would be better as it would have a 50 ohm in and a true 300 ohm out. However once you get away from the design frequency the feed impedances go to pot... So is there really much difference in the 6:1 and the 4:1? I've read of many people doing what I'm talking about with a 4:1 and just figured that a 6:1 should provide a better match... Am I thinking right or is the match so terrible anyway that it doesn't so much matter? Is it just that the thing balances the currents on the outputs and I'm just over thinking the matching ability? Appreciated gentlemen. ~Brett (N7MG) __ 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] Question for K3 Designers or LCD experts...
Is the custom segmented display on the K3 a TN fluid? ~Brett (N7MG) __ 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] Receiving 4th Harmonic of AM Station
Very nice!! Fun test... You're nuts! But hey so am I. I take it you have the 250Hz 8-pole filter in your radio in order for that to happen? ~Brett (N7MG) On Fri, 2010-07-23 at 23:34 +, Rick Stealey wrote: So now we know it wasn't caused by overload. But since I went to the trouble of hauling my signal generator up to the shack and connecting it to my K3 I figured you guys might like to know how your K3 will stand up to a big signal on the broadcast band. Let's not be so quick to assume this fantastic receiver can be overloaded to the point where it generates 20 over 9 signals on 160 and 80 meters !!! The 8640B is connected to the K3 through a coupler, and the antenna is connected to the other port. The generator is tuned to 940 KHz and the K3 is tuned to 1880 and 3760. The generator is cranked up till the K3 hears a signal at about S5 on 1880, a little over my local static level. The generator is putting out -40 dbm. S5 is about a -100 dbm signal. Most likely the S5 signal is the 2nd harmonic of the signal generator, 60 db down, not caused by the K3, because guess why? Because putting the attenuator on doesn't kill the signal like it would if it was internally generated. Your K3 isn't going to be bothered by killer AM broadcast band signals, at least not to the point where it generates 20 over 9 spurs, fear not !! Just for kicks (I've always wanted to do this) I tuned in some EU stations around 7008. Then set the generator to -20 dbm. Now let me tell you , -20 dbm is one, friggin, HUGE signal. And tuned it down the band until its effect was noticible on the weak signals. Want to guess how close I could get? 7008.3 !! 300 cycles away from weak Europeans, with a 60 db over 9 interfering signal Rick K2XT _ Hotmail is redefining busy with tools for the New Busy. Get more from your inbox. http://www.windowslive.com/campaign/thenewbusy?ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_2 __ 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
