Re: [Elecraft] K3 - SR2O
Chris: You do have Config: L-Mix-R set to A on one side, B on the other? (A b) That should put one rx on the tip, the other on the ring. It does on mine. -- 73 Art Allison, Colorado Whether you believe you can do a thing or not, you are right. --Henry Ford. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] MH2 Microphone Issue
Hi mate,I do have the MH-2 and certainly is big and PTT swithc is little hard to press but it stays there even my thumb finger moves,I don't have that mechanical problem you have,I am sure some one on the group will come out with a solution and congratulations for your new K3,I am taking mine to a DXPedition to Peanut island here in South east FL,we will operating the CQ WW Contest in CW as W4K special call,73 AD4C For a refined ham it is compulsory to own a k3 --- On Thu, 5/27/10, Jeff Cochrane - VK4BOF vk4bof.elecr...@gmail.com wrote: From: Jeff Cochrane - VK4BOF vk4bof.elecr...@gmail.com Subject: [Elecraft] MH2 Microphone Issue To: elecraft@mailman.qth.net Date: Thursday, May 27, 2010, 2:08 AM G'day everyone! First of all, After having given my K3 its first HF hitout this last weekend for our (Myself - VK4BOF, Gary - VK4FD Dale - VK4DMC) mini dxpedition for the World Flora Fauna at Undara Lava Tubes National Park in North Queensland, Australia I must say that I am more than impressed with my new K3. It performed flawlessly and was a real pleasure to use, the MH2 microphone is however another matter. Whilst its transmitted audio quality is excellent it appears that you must be a 400lb gorilla to use the damned thing, the TX button is so stiff to use. :-) And even when you get the button in, it must be only barely making contact that as soon as you relieve any pressure at all from the button, the radio goes back to RX mode. Does anyone else have this issue? Jeff Cochrane VK4BOF Innisfail QLD Australia Elecraft K3 #4257 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] CW Sidetone
Toby, For me, sidetone or monitor level linked to volume setting is very distasteful. Depending on the signal to noise ratio and the type of noise or signal, I'm always fiddling with the volume. I pretty much always want one sidetone or monitor level, and want it independent of volume. The only case I can think of where I might want level linked to volume is where I might have a poorly implemented setup with grossly different levels in speaker or headset. I don't have that problem at all because I have a separate external amplifier (MFJ-616) driving my speaker and I set the level on that, while the K3 and my other radios always match the level needed for my headphones. As a matter of fact my headphones are always active, and bridge off the speaker lines at a selector switch. All audio lines are isolated with transformers. http://www.w8ji.com/my_shack.htm and someday I will have more at http://www.w8ji.com/cables_and_wiring.htm With a simple basic one radio system where I plug in headsets I would equalize the volume in headsets with an attenuator if they are too sensitive. I dislike having to greatly adjust volume settings when gong from speaker to phones. I don't use the headphone jacks on any of my gear, I use the speaker outputs for everything. I have a switch the cuts the speaker in and out and the headphones are always on. I think this is one of the half the people want it one way, half the other issues. It is very easy to build an attenuator or put a little effort into the speaker and headphone system, and there is no need to grossly change audio levels on sidetone. 73 Tom - Original Message - From: Toby Pennington toby...@embarqmail.com To: Elecraft@mailman.qth.net Sent: Wednesday, May 26, 2010 8:37 PM Subject: [Elecraft] CW Sidetone I know I have heard that some want the cw side tone to work like it does, but I have never heard why? You set the sidetone to a certain frequency and the volume never changes. It is not tied to the AF gain like most rigs. I notice I have had to change the side tone when going from headphones to speaker. Perhaps some impedence issue there, but my phones are louder than my speaker requiring constant adjusting of the sidetone. Several modern rigs I have owned have the AF gain tied to the sidetone volume, why not the K3? Toby W4CAK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] CW Sidetone
This issue has been debated many times on the reflector and both parties have their points. In my opinion, the K3 has it right BUT I need the sidetone level to be available at all times during cw operation without push/hold/tone. The steady tone thing drives me crazy if I'm in a QSO and need to change level. The pitch adjustment with it's steady tone also bugs me but I've gotten used to this. Now I'm permanetly crazy! Steve N4LQ - Original Message - From: Tom W8JI w...@w8ji.com To: Toby Pennington toby...@embarqmail.com; Elecraft@mailman.qth.net Sent: Thursday, May 27, 2010 6:54 AM Subject: Re: [Elecraft] CW Sidetone Toby, For me, sidetone or monitor level linked to volume setting is very distasteful. Depending on the signal to noise ratio and the type of noise or signal, I'm always fiddling with the volume. I pretty much always want one sidetone or monitor level, and want it independent of volume. The only case I can think of where I might want level linked to volume is where I might have a poorly implemented setup with grossly different levels in speaker or headset. I don't have that problem at all because I have a separate external amplifier (MFJ-616) driving my speaker and I set the level on that, while the K3 and my other radios always match the level needed for my headphones. As a matter of fact my headphones are always active, and bridge off the speaker lines at a selector switch. All audio lines are isolated with transformers. http://www.w8ji.com/my_shack.htm and someday I will have more at http://www.w8ji.com/cables_and_wiring.htm With a simple basic one radio system where I plug in headsets I would equalize the volume in headsets with an attenuator if they are too sensitive. I dislike having to greatly adjust volume settings when gong from speaker to phones. I don't use the headphone jacks on any of my gear, I use the speaker outputs for everything. I have a switch the cuts the speaker in and out and the headphones are always on. I think this is one of the half the people want it one way, half the other issues. It is very easy to build an attenuator or put a little effort into the speaker and headphone system, and there is no need to grossly change audio levels on sidetone. 73 Tom - Original Message - From: Toby Pennington toby...@embarqmail.com To: Elecraft@mailman.qth.net Sent: Wednesday, May 26, 2010 8:37 PM Subject: [Elecraft] CW Sidetone I know I have heard that some want the cw side tone to work like it does, but I have never heard why? You set the sidetone to a certain frequency and the volume never changes. It is not tied to the AF gain like most rigs. I notice I have had to change the side tone when going from headphones to speaker. Perhaps some impedence issue there, but my phones are louder than my speaker requiring constant adjusting of the sidetone. Several modern rigs I have owned have the AF gain tied to the sidetone volume, why not the K3? Toby W4CAK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] CW Sidetone
Tom, I believe you are on so something the way you have your audio wired up. Thanks very much for detailed information and pictures of the way you do things at you QTH. I am not using such an elaborate sound system, just running the headphones direct into the rig. Speakers are SP 20 Icom and the other is a Ten Tec 307B. Using this method of plugging the headphones into the pnones jack, and using the speaker in put on the rig for output, there is definitely an audio problem when going from phones to speaker which requires and adjustment of the sidetone. Another way around this is to have an MFJ 784B tunable filter and use it for both both phones and speakers. This way the volume comtrol on the MFJ unit will equalize all audio and it will work the way I would like it to. Many thanks for your input! Toby W4CAK - Original Message - From: Tom W8JI w...@w8ji.com To: Toby Pennington toby...@embarqmail.com; Elecraft@mailman.qth.net Sent: Thursday, May 27, 2010 6:54 AM Subject: Re: [Elecraft] CW Sidetone Toby, For me, sidetone or monitor level linked to volume setting is very distasteful. Depending on the signal to noise ratio and the type of noise or signal, I'm always fiddling with the volume. I pretty much always want one sidetone or monitor level, and want it independent of volume. The only case I can think of where I might want level linked to volume is where I might have a poorly implemented setup with grossly different levels in speaker or headset. I don't have that problem at all because I have a separate external amplifier (MFJ-616) driving my speaker and I set the level on that, while the K3 and my other radios always match the level needed for my headphones. As a matter of fact my headphones are always active, and bridge off the speaker lines at a selector switch. All audio lines are isolated with transformers. http://www.w8ji.com/my_shack.htm and someday I will have more at http://www.w8ji.com/cables_and_wiring.htm With a simple basic one radio system where I plug in headsets I would equalize the volume in headsets with an attenuator if they are too sensitive. I dislike having to greatly adjust volume settings when gong from speaker to phones. I don't use the headphone jacks on any of my gear, I use the speaker outputs for everything. I have a switch the cuts the speaker in and out and the headphones are always on. I think this is one of the half the people want it one way, half the other issues. It is very easy to build an attenuator or put a little effort into the speaker and headphone system, and there is no need to grossly change audio levels on sidetone. 73 Tom - Original Message - From: Toby Pennington toby...@embarqmail.com To: Elecraft@mailman.qth.net Sent: Wednesday, May 26, 2010 8:37 PM Subject: [Elecraft] CW Sidetone I know I have heard that some want the cw side tone to work like it does, but I have never heard why? You set the sidetone to a certain frequency and the volume never changes. It is not tied to the AF gain like most rigs. I notice I have had to change the side tone when going from headphones to speaker. Perhaps some impedence issue there, but my phones are louder than my speaker requiring constant adjusting of the sidetone. Several modern rigs I have owned have the AF gain tied to the sidetone volume, why not the K3? Toby W4CAK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.437 / Virus Database: 271.1.1/2898 - Release Date: 05/26/10 18:26:00 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] MH2 Microphone Issue
Hi Jeff The button is a bit mushy lacking a positive action. Another problem that I have with the MH2 is its curly cord. The curly cord is so stiff that it pulls the radio if you try and stretch it a bit. It just does not have enough stretch, even if pulled a small amount. I like using a hand mic. What I suggest you do is try and getting an original Icom HM36 hand mic. This Icom mic sounds pretty good on the K3. It has a nice soft curly cord and the button has a nice positive smooth micro switch click. The current model HM36 is junk made in China, try and get an original Japanese made HM36 that came with the early Icom radios. Just make sure you throw the Icom radio in the bin and keep the mic! 73 John --- On Wed, 5/26/10, Jeff Cochrane - VK4BOF vk4bof.elecr...@gmail.com wrote: From: Jeff Cochrane - VK4BOF vk4bof.elecr...@gmail.com Subject: [Elecraft] MH2 Microphone Issue To: elecraft@mailman.qth.net Date: Wednesday, May 26, 2010, 7:08 PM G'day everyone! First of all, After having given my K3 its first HF hitout this last weekend for our (Myself - VK4BOF, Gary - VK4FD Dale - VK4DMC) mini dxpedition for the World Flora Fauna at Undara Lava Tubes National Park in North Queensland, Australia I must say that I am more than impressed with my new K3. It performed flawlessly and was a real pleasure to use, the MH2 microphone is however another matter. Whilst its transmitted audio quality is excellent it appears that you must be a 400lb gorilla to use the damned thing, the TX button is so stiff to use. :-) And even when you get the button in, it must be only barely making contact that as soon as you relieve any pressure at all from the button, the radio goes back to RX mode. Does anyone else have this issue? Jeff Cochrane VK4BOF Innisfail QLD Australia Elecraft K3 #4257 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] MH2 Microphone Issue
Hi Paul What are your mods? Did you just use a capacitor to roll off the bass? Someone once told me that the Heil HC5 is sound transducer that was very common on PC motherboards. I lost the web link of the manufacturer, which is a pity since the HC5 seems to produce good audio on just about every radio that I have used. The only problem is that you cant buy the HC5 cartridge anymore. John --- On Wed, 5/26/10, paulb xtr348...@xtra.co.nz wrote: From: paulb xtr348...@xtra.co.nz Subject: Re: [Elecraft] MH2 Microphone Issue To: elecraft@mailman.qth.net Date: Wednesday, May 26, 2010, 10:53 PM The MH2 mic PTT may be getting caught in the rubber surround. It is easy to undo the cover. Note that the PTT button only fits one-way, there is a cut away slide which fits onto the switch. For my own use the mic insert had a tad to much bass, it has been slightly modded here to suit. regards Paul zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/MH2-Microphone-Issue-tp5106621p5107093.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] [K2] control board question
I started build one of the 2 K2s I ordered at Dayton (one for me and the second for Linda K2QYL). After about 5 hours I have the control board done. I did the resistence measurments as specified and all are OK, except for U6 pins 29 30, the DIT and DAH pins. The manual specifys between 70-90K ohms, I have 95K on both. I'm guessing that is OK. Or do I need to look for something fairly minor? John K2QY __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K2 Build - #6950
Steve KC8QVO wrote: Problem found. I did some swapnostics with a buddy's K2 and we traced the problem to the front panel. After going through all the resistance checks again my friend found the problem - U4 was backwards. It took me quite a while to fix it. I used solder wick to suck out the solder. I am sure anyone that has done that on a 20 pin IC can relate - quite tedious to pull the chip without lifting a pad or pulling a plated thru hole! Steve, KC8QVO Steve, you are to be commended. Unsoldering a 20-pin IC?? Wow, you're good! My method is to just buy another IC and cut each pin from the old IC and remove the pins individually; I feel that is much less risky to do than trying to salvage the chip. But, good on you, Steve, for doing just that. Mark - W5EZY -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Build-6950-tp5091343p5108358.html Sent from the [K2] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K2] control board question
Hi John, You should be fine. Take your time and enjoy the build. Finish the one K2 before you start the other. It'll go a whole lot smoother when you know what to expect. Also, I'd recommend you consider getting pre-wound toroids from Mike Morohovich ( 412) 481-2349 toroid...@earthlink.net. Toroids aren't much fun, and if the enamel isn't properly removed, any poor connections can lead to all sorts of grief. Cheers, Alan Alan D. Wilcox, W3DVX (K2-5373, K3-40) 570-321-1516 http://WilcoxEngineering.com Williamsport, PA 17701 John Fritze wrote: I started build one of the 2 K2s I ordered at Dayton (one for me and the second for Linda K2QYL). After about 5 hours I have the control board done. I did the resistence measurments as specified and all are OK, except for U6 pins 29 30, the DIT and DAH pins. The manual specifys between 70-90K ohms, I have 95K on both. I'm guessing that is OK. Or do I need to look for something fairly minor? John K2QY __ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] MH2 Microphone Issue
juergen wrote: Hi Paul What are your mods? Did you just use a capacitor to roll off the bass? Someone once told me that the Heil HC5 is sound transducer that was very common on PC motherboards. I lost the web link of the manufacturer, which is a pity since the HC5 seems to produce good audio on just about every radio that I have used. The only problem is that you cant buy the HC5 cartridge anymore. John Have you asked Heil at i...@heilsound.com mailto:i...@heilsound.com 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
Re: [Elecraft] MH2 Microphone Issue
Have you asked Heil Yes. Heil will no longer sell the bare elements. One must purchase a D-104 upgrade kit in order to get the element. In addition, Heil will not sell replacement clamshells for the original Proset mic boom for repair purposes. In spite of their claims, Heil do not care about customer service. The cost to repair a damaged ProSet is more than replacing it with a Yamaha CM-500 and the ProSet would have to be shipped to Heil rather than allow the user to make a relatively simple change of mic element and housing. 73, ... Joe, W4TV On 5/27/2010 9:54 AM, Mike wrote: juergen wrote: Hi Paul What are your mods? Did you just use a capacitor to roll off the bass? Someone once told me that the Heil HC5 is sound transducer that was very common on PC motherboards. I lost the web link of the manufacturer, which is a pity since the HC5 seems to produce good audio on just about every radio that I have used. The only problem is that you cant buy the HC5 cartridge anymore. John Have you asked Heil at i...@heilsound.commailto:i...@heilsound.com 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] CW Sidetone
I am not using such an elaborate sound system, just running the headphones direct into the rig. Speakers are SP 20 Icom and the other is a Ten Tec 307B. Using this method of plugging the headphones into the pnones jack, and using the speaker in put on the rig for output, there is definitely an audio problem when going from phones to speaker which requires and adjustment of the sidetone. Another way around this is to have an MFJ 784B tunable filter and use it for both both phones and speakers. This way the volume comtrol on the MFJ unit will equalize all audio and it will work the way I would like it to. Hi Toby, Because I use stereo diversity, I also have a set of 784 DSP filters in stereo. The frequency and passband controls in one adjust both. I used them primarily with my stereo modified R4C's, so the DSP filters follow my heavily modified R4C's around. Whether I use the 784's or not, I still mix left and right ears into mono because I only have a single speaker. This led me to discover an interesting phase effect combining two receivers into one channel when the receivers shared the same oscillators. When using two antennas that have wide spatial separation, and by changing phase lag or lead between the two channels (either at RF or at audio), a signal can be totally nulled out or directly added. I had a calibration chart for my antennas. I measured audio phase difference between the channels, and by using antennas several hundred feet apart I could resolve a difference in direction of a few degrees. It was easy to resolve the difference between eastern and western Massachusetts from here in Georgia. I found this very useful for locating jammers, spurious signals from BC transmitters, or just nulling unwanted CW signals out while still hearing other much weaker signals on the very same frequency. DF'ing unfortunately does not work with the K3 because the channels rotate phase in relationship to each other as dial frequency is changed, so DF'ing is out of the question. Nulling signals will work, but maintaining directional calibration is impossible. Someday someone smarter than me will do this in firmware, where the two receivers in the K3 can be used to null a CW signal while still passing a weaker signal on the very same frequency. Another interesting effect is nulling one's own transmitter, although for maximum dynamic range it has to be done at radio frequencies. Even with limited dynamic range it is possible to hear stronger signals while the key is depressed. The ultimate in QSK. If done properly at radio frequencies, it even works on SSB. I can hear stronger SSB stations while I am transmitting on the very same frequency. My own transmitter is S-9 or so, so I can hear anyone stronger than S-9 on my own frequency while I am transmitting. There are many things that can be done with two identical receiver channels, or with RF phasing. :-) 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] K3 - SR2O
On Thu, May 27, 2010 at 5:15 AM, Art K6XT k...@arrl.net wrote: You do have Config: L-Mix-R set to A on one side, B on the other? (A b) That should put one rx on the tip, the other on the ring. It does on mine. Assuming you have CONFIG:SPKRS = 2 also! ~Iain / N6ML __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] MH2 For Sale
Elecraft MH2 microphone excellent condition, little use and a recent purchase. $45.00 plus shipping. Contact off list please. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] MH2 Microphone Issue
Well durn! I saw that kit, but it didn't say which element it was. There's no way to order from their website either AFAICT. I needed some of the foam pads that go inside the Pro-Set ear muffs, and had to do a phone order. I now have the CM-500 on the K3 and the Pr0-Set on the backup PRO II. So the real downside of dealing with Elecraft is we can so easily get used to great customer service. :-P 73, Mike NF4L Joe Subich, W4TV wrote: Have you asked Heil Yes. Heil will no longer sell the bare elements. One must purchase a D-104 upgrade kit in order to get the element. In addition, Heil will not sell replacement clamshells for the original Proset mic boom for repair purposes. In spite of their claims, Heil do not care about customer service. The cost to repair a damaged ProSet is more than replacing it with a Yamaha CM-500 and the ProSet would have to be shipped to Heil rather than allow the user to make a relatively simple change of mic element and housing. 73, ... Joe, W4TV On 5/27/2010 9:54 AM, Mike wrote: juergen wrote: Hi Paul What are your mods? Did you just use a capacitor to roll off the bass? Someone once told me that the Heil HC5 is sound transducer that was very common on PC motherboards. I lost the web link of the manufacturer, which is a pity since the HC5 seems to produce good audio on just about every radio that I have used. The only problem is that you cant buy the HC5 cartridge anymore. John Have you asked Heil at i...@heilsound.commailto:i...@heilsound.com 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] K3 144 MHz module - how to make it work?
An appeal to anyone - I have my 2 meter module installed in my K3, but the instruction manual leaves out the steps on how to set the works up for repeaters and offsets, tone accesses. Does anyone have any idea of where to find a logical sequence of steps to do the job, or is this a case of using some digital magic wand? Thanks for any input. 73's Gil WA5YKK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 144 MHz module - how to make it work?
An appeal to anyone - I have my 2 meter module installed in my K3, but the instruction manual leaves out the steps on how to set the works up for repeaters and offsets, tone accesses. Please see the FM Operation section in the K3 Owner's Manual. 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
Re: [Elecraft] K3 144 MHz module - how to make it work?
I believe you will find what you need in the K3 ops manual, not the K144XV manual. Grant/NQ5T On May 27, 2010, at 11:13 AM, Gil WA5YKK wrote: An appeal to anyone - I have my 2 meter module installed in my K3, but the instruction manual leaves out the steps on how to set the works up for repeaters and offsets, tone accesses. Does anyone have any idea of where to find a logical sequence of steps to do the job, or is this a case of using some digital magic wand? Thanks for any input. 73's Gil WA5YKK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 - SR2O
That's it!! I had forgotten about that menu setting. Works properly now. I can detect some low level crosstalk but I suspect less than the FT1kMP. Will check with some big sigs in WPX. Thanks for all the responses. Chris G3SJJ Guy Olinger K2AV wrote: Make sure you have that you don't have CONFIG: L--MIX--R set to something other than A b. Possibilities are A b, Ab b, A Ab, Ab Ab. Also make sure that you have CONFIG: SUB AF set to nor. Also it is possible to set L-MIX-R via programming over the serial line from a program, so it could have been left in this state from running a logger, etc. If those are correct, make sure you don't have a wiring error. The headphone channels with the above settings are completely separate on my K3. 73, Guy. On Wed, May 26, 2010 at 4:14 PM, Chris G3SJJ g3...@btinternet.com wrote: I am trying to set up my K3 for FD here in Eu in 10 days time. I have successfully used SR2O in the past with FT1kMPs but so far not with the K3. I have a splitter box which takes both Rx audio channels from the headphone socket and splits to one headset for main rx and another with sub rx. Neither operator should hear the other rx. This works perfectly with the FT1kMP but so far I can't get it to work with the K3. Any suggestions? Chris G3SJJ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] MH2 Microphone Issue
Jeff At the suggestion of Ian GM3SEK, I removed the spring under the ptt and cut a bit off it before stretching back to its original length. It was a bit fiddly but not difficult. Dropped it more than once! The ptt is now much easier to use but as others have remarked, it has no positive tactile feedback - it needs a click or similar. A shame, since the quality of the audio is very good, although my voice prefers the MD2. 73 Stephen G4SJP On 27/05/2010 03:08, Jeff Cochrane - VK4BOF vk4bof.elecr...@gmail.com wrote: G'day everyone! First of all, After having given my K3 its first HF hitout this last weekend for our (Myself - VK4BOF, Gary - VK4FD Dale - VK4DMC) mini dxpedition for the World Flora Fauna at Undara Lava Tubes National Park in North Queensland, Australia I must say that I am more than impressed with my new K3. It performed flawlessly and was a real pleasure to use, the MH2 microphone is however another matter. Whilst its transmitted audio quality is excellent it appears that you must be a 400lb gorilla to use the damned thing, the TX button is so stiff to use. :-) And even when you get the button in, it must be only barely making contact that as soon as you relieve any pressure at all from the button, the radio goes back to RX mode. Does anyone else have this issue? Jeff Cochrane VK4BOF Innisfail QLD Australia Elecraft K3 #4257 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] MH2 Microphone
The MH2 microphone listed earlier today has been sold to Derek Brown, WF4I pending receipt of funds, Thanks Derek! __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K3NA on 5 pole vs 8 pole filters
Fellow Elecrafters, I remember reading a comparison by I think K3NA on the differences between 5 pole and 8 pole filters that eventually lead me to stick with the 5 pole filters. Does anybody know what I'm thinking of, because Google searches, and Nabble searches of the Elecraft archives aren't turning anything up, and I've gotten no response from direct contact with K3NA (maybe I have an old e-mail). 73 de Al, KE1FO K3 #3055 K3 #4094 - Check out my Amateur Radio Contesting blog at ke1fo.wordpress.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] KPA100 problem
Hello from north Italy. I have a K2 sn 6822. With my 1nd KPA100 it's ok (Rev F Oct 2009) With my 2nd KPA100 (Rev B June 2003) , I have a little problem. If 11 WATT work fine. If 11 WATT, I have HI CUR on display, for a bit moment, 5 watt on display is reality abt 15 watt Need I upgrade my KPA100 ? Let me konw Tnx vy 73 in3acv, Luva __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 fan noise, part XXLIV
Since the responses to my inquiry about K3 fan brands/models have virtually stopped, I thought I'd post the results. There are indeed at least 2 different fans in use in K3s: Elina HDF6015L-12LB-1 and UTEC AT6015L-12L2B-ND2 and ND5 The Elina fans are made by Inaba Denki Sangyo, a Japanese company. You can find specs for this fan at http://www.europeanthermodynamics.com/FansBlowers/elina%20fan_eng.pdf The UTEC fans are made by United Thermal Engineering Corp. Their office is in San Jose, CA. but their factories are in Japan, Taiwan, and China. http://www.utecusa.com/products/pdffiles/pid_1-45-152_%28SPEC%29AT6015L-12L2B%20ND1%2812-22-08%29.pdf According to the published specs, the UTEC fans have a slightly higher rated speed (3000 rpm vs 2800 rpm), more airflow (15.4 cfm vs 10.6 cfm), higher static pressure (2.21mm vs 1.5mm),and higher noise (24.8 dBA vs 21 dBA) than the Elina fans. They also operate over a wider range of voltages than the Elina fans (6-13.8v vs 10.2-13.8v). Both use ball bearings. Based just on the specs, I would expect the UTEC fans to be slightly more powerful and slightly louder. From the responses I received, it looks like the Elina fans were used on earlier K3s with serial numbers 900 or so. I received responses from 13 people (including myself), covering 13 K3s. If the reporter used words or phrases like quiet, silent, never hear them, I counted their response as quiet. If they used words or phrases like loud, annoying, I can hear them, I counted their response as loud UTEC Quiet 3 UTEC Loud: 4 Elina Quiet: 6 Elina Loud: 0 With such a small sample of self-reported anecdotes of a subjective perception, the results of this little survey are statistically virtually meaningless. However, they do suggest a direction for further research in that no one reported loud Elina fans. I may have a chance to do some side-by-side comparisons between my K3 and an earlier SN K3 in a few weeks. If that turns up anything interesting, I'll report it here. Thanks to everyone who took the time and effort to respond to my request. 73 -- Joe KB8AP On May 23, 2010, at 9:19 AM, Joe Planisky wrote: The topic of K3 fan noise seems to come up every now and then, and each time it does there's a chorus of people who say the fans in their K3 are absolutely silent, and an equal chorus of people who say the fans are clearly audible. ... However, I'm also wondering if Elecraft has changed brands or models of fans from time to time. It's possible that some brands/models might be quieter than others. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 mods and updates
I see in the new K3 Assembly manual that there are two new items added since S/N 1567 was born.? The first is for thermal pads that attach to the underside of the LPA transistors where they meet the bottom cover (page 62).? The second is aluminum metal plates/shields for the synthesizer modules of which I have two, one each for the main unit and subRX (page 50).? Are there any upgrade mods available to get these? Dan -- N3ND __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K1 build alignment.
Ok this has me a bit stumped... First I could get 40m working on RX and TX, but 20m was deaf as a post and no TX, now it's the other way around. I needed to tweak L7 and L8. 40m is band 1 and 20m is band 2. Anyone else had this got any ideas? Yes been through 62 and the relays do switch. None of L1, L2 L5 and L6 seem to be open circuit. C's all still C and not shorted (lifted leads, tested and resoldered). I reset the 40m L completely withdrwaing the cores and then going through testing with the screwed in with various turns but the signal generator signals are not detected now. But are on another radio. I have checked continuity and for solder bridges etc... and the filter board default without power is band 1. Short of sticking the filter board on a VNA as J7 pin 1-8 should be the BPF, J6 pin 1-7 should be the pre-mix BPF and J8 ping 1 and 8 should be the LPF (No ATU so J2 bridged). Interested in ideas. BTW FT817 will easily pick out a 1uV signal but the K1 cannot seem to manage anything until about 2.5uV but the spec sheet says 0.15uV which seems something is wrong is this usual? How am I measuring the signal: callibrated 50uV signals from xtal oscillator, step attenuator and an oscilloscope. 72 Dom M1KTA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] KPA100 problem
Luca, I believe you also have a problem at 11 watts. If you check the actual power I believe you will find it is always high (100 watts) at any setting of the power control above 11 watts. The problem is that the power output from the KPA100 is not being reported to the base K2 microprocessor. Yes, this also happens at low power. The result is that the microprocessor detects no power output and ramps up the drive to full in an attempt to obtain more power. The most likely problem source is that the diodes D16 and D17 have been damaged - probable cause is a lightning (or rain or wind or snow) static. The normal recommendation is to remove the antenna when not in use. Other possible failure points are U5 and U6 in the KPA100. If you do find the diodes damaged, it may be a wise step to put a 100 uHy inductor in your antenna system, located near the K2. Inside an antenna switch or relay box is one possibility, but lacking that, put the inductor inside the barrel of a PL-259 connector (one inductor lead to the center conductor, the other to the shell), then connect that assembly to the feedline using a coax TEE adapter. I will not guarantee that the added inductor will prevent all future diode failures, but it will reduce the probability of failure. 73, Don W3FPR 73, Don W3FPR Luca Valer wrote: Hello from north Italy. I have a K2 sn 6822. With my 1nd KPA100 it's ok (Rev F Oct 2009) With my 2nd KPA100 (Rev B June 2003) , I have a little problem. If 11 WATT work fine. If 11 WATT, I have HI CUR on display, for a bit moment, 5 watt on display is reality abt 15 watt Need I upgrade my KPA100 ? Let me konw Tnx vy 73 in3acv, Luva __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K1 build alignment.
Dom, Yes, that K1 would appear to be deaf - most can hear a -130 dBm signal well above the receiver noise floor. To troubleshoot it, use your oscilloscope (with a 10X probe). First check the crystal oscillator output on each band You can check that at the 2 band board P1 pin 4. You should have at least 200 mV peak to peak on each band. If that test is successful, put the oscilloscope probe on P1 pin 6 and tune the PreMix Bandpass Filters for maximum deflection on the 'scope. Note, that will give you an almost correct setting of the inductors, but you will want to peak them during transmit while monitoring the RF output with your scope across the dummy load. OK, the PreMixer bandpass is adjusted close enough to go on to the next step - this time you will have to be in TUNE. Monitor the 2 band board P2 pin 8 with your scope and adjust the inductors for maximum RF. If the power output goes above 3 or 4 watts, tap the WPM- Button to bring it down - you cannot observe the peak if the power level is anywhere near the maximum because the transmit stages hit their maximum gain, so keep the power output low. If you find output at the antenna in the step above, connect the oscilloscope across the dummy load and re-peak the inductors - you will then be done tuning the bandpass filters - if there is subsequent trouble, have faith in the tuning of those filters and look for another problem. I believe what you will find in the end is a bad solder connection somewhere. If it worked at one time and then stopped working, that is usually an indication of an intermittent solder joint. 73, Don W3FPR Dominic Baines wrote: Ok this has me a bit stumped... First I could get 40m working on RX and TX, but 20m was deaf as a post and no TX, now it's the other way around. I needed to tweak L7 and L8. 40m is band 1 and 20m is band 2. Anyone else had this got any ideas? Yes been through 62 and the relays do switch. None of L1, L2 L5 and L6 seem to be open circuit. C's all still C and not shorted (lifted leads, tested and resoldered). I reset the 40m L completely withdrwaing the cores and then going through testing with the screwed in with various turns but the signal generator signals are not detected now. But are on another radio. I have checked continuity and for solder bridges etc... and the filter board default without power is band 1. Short of sticking the filter board on a VNA as J7 pin 1-8 should be the BPF, J6 pin 1-7 should be the pre-mix BPF and J8 ping 1 and 8 should be the LPF (No ATU so J2 bridged). Interested in ideas. BTW FT817 will easily pick out a 1uV signal but the K1 cannot seem to manage anything until about 2.5uV but the spec sheet says 0.15uV which seems something is wrong is this usual? How am I measuring the signal: callibrated 50uV signals from xtal oscillator, step attenuator and an oscilloscope. 72 Dom M1KTA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 mods and updates
Interesting my synthesizer module has the metal cover over it, but there wasn't the instructions to add the thermal pads on the power transistors (can't remember my K3's serial no. offhand, but I built it a couple months ago). After the misery of having to take the bottom panel off my K2, it was a welcome relief that I didn't have to mess with thermal pads and stuff with my K3 hi hi, just screw the bottom cover on and go! Should I add the thermal pads in any case? 73, LS W5QD -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-mods-and-updates-tp5110146p5110408.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3] K3NA on 5 pole vs 8 pole filters
Alfred Frugoli wrote: I remember reading a comparison by I think K3NA on the differences between 5 pole and 8 pole filters that eventually lead me to stick with the 5 pole filters. Eric and I are both ex-Orion users, which worked well with 4-pole filters so I concluded 5-poles would be sufficient in the K3. After receiving my first K3 I discovered it had a much lower hardware AGC threshold. This led to the HAGC mod which was implemented around S/N 350, but I still don't think the threshold is as high as Orion's. Therefore the steeper skirts in the 8-pole filters are necessary to prevent AGC pumping from close-in strong signals. I've since switched from all 5-pole 500s to all 8-pole 500s (Inrads) in both of my units. I suspect the K3 could be improved without other harmful effects by raising the AGC threshold a little more. Someday when I have nothing better to do I may try some experiments to see. The DSP filters in both rigs are probably similar but the lower AGC threshold in the K3 makes it more susceptible to strong adjacent signals if you only use 5-pole filters. However if you don't operate in extreme environments like 160 contests you may never notice any difference. 73, Bill -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-K3NA-on-5-pole-vs-8-pole-filters-tp5109906p5110460.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 144 MHz module - how to make it work?
I'm sure glad you asked that question, Gil. I just got my 2m module in today, and would have had to do the same!! How'd yours install and work?? 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] K2 Build - #6950
Steve, This is the reason I spent my money on the Hakko de-soldering gun. I was a test builder and found myself doing quite a number of mods. I also worked on some non - Elecraft boards of cheaper quality... and the de-soldering iron has save my butt. I have pulled a couple of traces in my past. Great you were able to do so with no damage. Bill K9YEQ K2 and KX1 field tester, K3 and modules -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Steve KC8QVO Sent: Wednesday, May 26, 2010 10:15 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K2 Build - #6950 Problem found. I did some swapnostics with a buddy's K2 and we traced the problem to the front panel. After going through all the resistance checks again my friend found the problem - U4 was backwards. It took me quite a while to fix it. I used solder wick to suck out the solder. I am sure anyone that has done that on a 20 pin IC can relate - quite tedious to pull the chip without lifting a pad or pulling a plated thru hole! Steve, KC8QVO -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Build-6950-tp5091343p5106740.html Sent from the [K2] 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
[Elecraft] New K3 app note issued.
The app note for modifying the K3SYN board has been posted to the K3 Enhamcements and Application Notes page at: http://www.elecraft.com/K3/k3_app_notes.htm It is a simple one-resistor mod. Next time I have the rig open, I'll probably do both of mine. Description: In rare cases, at certain frequencies the DDS driving signal to the Phase Locked Loop (PLL) may be marginal, resulting in a sudden shift in frequency (commonly called chirp). This modification adds a resistor to the KSYN3 board that increases the DDS drive level prevent this condition. This is an optional modification and is not required unless you are experiencing this condition. 73, Bruce N1RX __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] New K3 app note issued.
That should read Enhancements not EnHAMcements, of course. 8-) Bruce N1RX K3 #559 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] New K3 app note issued.
OK, how do I find out if I need this mod? I have witnessed two different frequency shift problems, one of them I have posted here and there has been some discussion about it. Problem #1 (posted before) -- when listening to CW, when the signal is reasonably strong such as S9 or better, if there is a slight pause in the sending there is sometimes a frequency shift on the order of 10 Hz to 40 Hz. I am guessing at the actual shift amount as it is a slight but very apparent shift in tone. Problem #2: on a couple of occasions while operating PSK, there has been a slight shift in frequency, enough that my software is no longer tracking the signal (I use CocoaModem). I am not sure how much a shift would need to be for CocoaModem to lose sync but it does lose sync. This has happened a few times. At first, I thought it was the other guy hitting his VFO or maybe some old tube rig that is has an unstable VFO but the last two times it happened I am pretty sure that it was me (and, my hands are no where near the VFO knob). By the way, as far as I know, in neither case above, does the VFO frequency readout change value. For PSK, I keep my VFO pegged on 14070.150 Hz and I think I would notice if this changed. 73, phil, K7PEH On May 27, 2010, at 3:54 PM, Bruce Beford wrote: The app note for modifying the K3SYN board has been posted to the K3 Enhamcements and Application Notes page at: http://www.elecraft.com/K3/k3_app_notes.htm It is a simple one-resistor mod. Next time I have the rig open, I'll probably do both of mine. Description: In rare cases, at certain frequencies the DDS driving signal to the Phase Locked Loop (PLL) may be marginal, resulting in a sudden shift in frequency (commonly called chirp). This modification adds a resistor to the KSYN3 board that increases the DDS drive level prevent this condition. This is an optional modification and is not required unless you are experiencing this condition. 73, Bruce N1RX __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] New K3 app note issued.
Phil, The ap note itself says it applies to rigs before approximately 3922 serial number. I looked to see if my 4076 was covered, although I have not experienced the problem yet. 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] K3 fan noise, part XXLIV
The p-value is 0.07 (Fisher Exact test). Not dramatically significant, but well above the statistically virtually meaningless level. You might write back to your respondents and see if there are any differences in the K3s, such as the amount of empty space inside, or in settings. Peter W0LLN On Thu, May 27, 2010 at 1:28 PM, Joe Planisky jp...@jeffnet.org wrote: Since the responses to my inquiry about K3 fan brands/models have virtually stopped, I thought I'd post the results. There are indeed at least 2 different fans in use in K3s: (snip) UTEC Quiet 3 UTEC Loud: 4 Elina Quiet: 6 Elina Loud: 0 With such a small sample of self-reported anecdotes of a subjective perception, the results of this little survey are statistically virtually meaningless. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] New K3 app note issued.
Phil Hystad-3 wrote: OK, how do I find out if I need this mod? I have witnessed two different frequency shift problems, one of them I have posted here and there has been some discussion about it. Problem #1 (posted before) -- when listening to CW, when the signal is reasonably strong such as S9 or better, if there is a slight pause in the sending there is sometimes a frequency shift on the order of 10 Hz to 40 Hz. I am guessing at the actual shift amount as it is a slight but very apparent shift in tone. Problem #2: on a couple of occasions while operating PSK, there has been a slight shift in frequency, enough that my software is no longer tracking the signal (I use CocoaModem). I am not sure how much a shift would need to be for CocoaModem to lose sync but it does lose sync. This has happened a few times. At first, I thought it was the other guy hitting his VFO or maybe some old tube rig that is has an unstable VFO but the last two times it happened I am pretty sure that it was me (and, my hands are no where near the VFO knob). By the way, as far as I know, in neither case above, does the VFO frequency readout change value. For PSK, I keep my VFO pegged on 14070.150 Hz and I think I would notice if this changed. Neither problem. This mod applies to a chirp in your transmitted signal, usually when operating split. It does not apply to received signals. 73, Bill -- View this message in context: http://elecraft.365791.n2.nabble.com/New-K3-app-note-issued-tp5110930p5111248.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Nice KXV3 feature
Was looking through the K3 manual and discovered something that will be very helpful tomorrow. I can put the K3 into KXV3 test mode and use it as a low power generator. With that capability and my power meter (which can only take +7dbm) I can measure the condition of my 4 year old buried feed. Nice! jim ab3cv __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] KSYN3 mods to date, corrected third mod applicability
The most recent mod to the KSYN3 board(s) is the third mod to that board. The second mod potentially undoes and redoes the first mod (unless you chose to do the first mod via SMD change). First mod, applicable to all K3s shipped before 12/22/08: http://www.elecraft.com/K3/mods/ELECRAFT_Application_Note_KSYN3_ALC_Rev_A.pdf Second mod, applicable to any synthesizer without a metal plate glued to it: http://www.elecraft.com/manual/ELECRAFT%20KSYN3%20Stiffener%20Mod%20Rev%20D.pdf Third mod, applicable to S/N prior to 3922: http://www.elecraft.com/K3/mods/KSYN3%20DDS%20Gain%20Modification.pdf I have done the first mod, but would have to undo it and redo it if I did the the second mod. And the third mod would then await. Fortunately, I have only one KSYN3 board--not having bought a second receiver (which includes a second KSYN3). 73, Paul W8TM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] KSYN3 mods to date
The most recent mod to the KSYN3 board(s) is the third mod to that board. The second mod potentially undoes and redoes the first mod (unless you chose to do the first mod via SMD change). First mod, applicable to all K3s shipped before 12/22/08: http://www.elecraft.com/K3/mods/ELECRAFT_Application_Note_KSYN3_ALC_Rev_A.pdf Second mod, applicable to any synthesizer without a metal plate glued to it: http://www.elecraft.com/manual/ELECRAFT%20KSYN3%20Stiffener%20Mod%20Rev%20D.pdf Third mod, applicable to S/N 3922 and later: http://www.elecraft.com/K3/mods/KSYN3%20DDS%20Gain%20Modification.pdf I have done the first mod, but would have to undo it and redo it if I did the the second mod. And the third mod would then await. Fortunately, I have only one KSYN3 board--not having bought a second receiver (which includes a second KSYN3). 73, Paul W8TM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
