[Elecraft] K3 ESD
Dear all, I am about to install my subreceiver and would like to finish before the weekend but I have no ESD work place. How can I best protect the parts? Or do I have to wait until I can get the needed ESD equipment? OZ1CCM, Kjeld __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] P3 Minor Software Bug?
The P3 frequency display is easily confused by use of RIT. Alan said fixing it was on the list and I'm just wondering if it's near the top. He posted a workaround on Nov 10 - using CENTER - but I'm finding I have to use it quite a lot. It would be much more convenient not to have to :-) 73 to all Geoff G3UCK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 ESD
Wear cotton clothing rather than nylon or highly static material; avoid walking around on static-prone carpets. Wrap a length of bare copper wire around your wrist and solder a 2 megohm resistor to it. Connect that to a nearby ground connection. Just ensure that the K3 is always at the same potential as yourself by touching its frame regularly. You should be okay at that. 73 de David G4DMP In a recent message, Kjeld Holm k...@kh-translation.dk writes I am about to install my subreceiver and would like to finish before the weekend but I have no ESD work place. How can I best protect the parts? Or do I have to wait until I can get the needed ESD equipment? -- + - - - - - - - - - - - - - - - - + | David M Pratt, Kippax, Leeds. | | Website: http://www.g4dmp.co.uk | + - - - - - - - - - - - - - - - - + __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 ESD
Kjeld, I used a table away from electrical appliances and covered it with tin or aluminum foil. I had an antistatic wrist strap which I connected to this large piece of foil and worked in this manner. Ideally you would connect the foil to a ground through a 1 MegOhm resistor. Note I did not power the K3 or any test equipment up while working atop this foil otherwise one would possibly cause a short or worse electrocute oneself. Generally the larger the area of conductor the less the difficulty with ESD, at component level the risk of ESD damage is greatest, at board level it is considerably reduced and at assembly level it is further reduced. You do the above at your own risk but it worked for me. Wear cotton avoid synthetic clothing and stay away from rugs or carpets. Safety first and I suppose this means we should both purchase an anti-static mat. Good luck and please thinks safety first. 73 Doug EI2CN -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Kjeld Holm Sent: 17 December 2010 09:18 To: 'elecraft' Subject: [Elecraft] K3 ESD Dear all, I am about to install my subreceiver and would like to finish before the weekend but I have no ESD work place. How can I best protect the parts? Or do I have to wait until I can get the needed ESD equipment? OZ1CCM, Kjeld __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 ESD
David Pratt wrote: In a recent message, Kjeld Holm k...@kh-translation.dk writes I am about to install my subreceiver and would like to finish before the weekend but I have no ESD work place. How can I best protect the parts? Or do I have to wait until I can get the needed ESD equipment? Wear cotton clothing rather than nylon or highly static material; avoid walking around on static-prone carpets. Wrap a length of bare copper wire around your wrist and solder a 2 megohm resistor to it. Well, maybe do the soldering first... The resistor can be 1 megohm or anything else in that region. It purpose is to limit any ESD current surge, and also to limit any accidental shock current in your body. For both of those reasons, the resistor should be at least 250V rated, and the wrist band must be insulated from any accidental contact (except to yourself). Connect that to a nearby ground connection. Just ensure that the K3 is always at the same potential as yourself by touching its frame regularly. NO - that is completely the wrong way around! A ground connection to the Mother Planet will NOT ensure ESD protection. If done without proper understanding, it is more likely to *increase* the risks to both the equipment and yourself. The whole purpose of ESD protection is to minimize all voltage differences and current surges between your body and the electronic components, so connect your home-made wrist strap directly to the K3. Since you do not have a proper ESD mat, place the K3 and KRX3 on a sheet of aluminium foil. Before opening the anti-static bag containing the KRX3, leave the bag on the foil for a short time to allow any static potentials to equalize. You will then be working with a reasonable level of ESD protection. As it isn't necessary to connect any other mains-powered equipment or use a soldering iron while installing K3 option boards, grounding of the K3 and the sheet of foil is purely optional. -- 73 from Ian GM3SEK http://www.ifwtech.co.uk/g3sek __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 ESD
I also put *everything* on a metal tea tray which has the Mohm resistor to earth. My wrist strap connects to the tea tray. Equi-potential is the secret. Put the unwrapped packets on the tray with the K3 and unwrap them onto the tray. David G3UNA Wear cotton clothing rather than nylon or highly static material; avoid walking around on static-prone carpets. Wrap a length of bare copper wire around your wrist and solder a 2 megohm resistor to it. Connect that to a nearby ground connection. Just ensure that the K3 is always at the same potential as yourself by touching its frame regularly. You should be okay at that. 73 de David G4DMP In a recent message, Kjeld Holm k...@kh-translation.dk writes I am about to install my subreceiver and would like to finish before the weekend but I have no ESD work place. How can I best protect the parts? Or do I have to wait until I can get the needed ESD equipment? -- __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 ESD
Hello, Kjeld... I have done lots of work with electrostatic-sensitive components for a number of years, and have never had anything wrt ESD other than a wrist-strap (and its IMPORTANT series resistor). I rarely use the wrist-strap, but instead try to use common sense wrt grounding... I use a grounded soldering station, which in your case of the K3+subreceiver is irrelevant, and am careful to discharge myself on one or more grounded devices AFTER seating myself to work on the electronics. I habitually to wear cotton or wool clothing, not plastic (synthetic) cloth. Even if the devices on which you ground yourself are not physically grounded, if they are large enough their capacitance will accept enough charge to equalize potential differences in the surroundings and render you non-dangerous wrt ESD. (After all, a ground is really a connection to a rather large conducting sphere called the earth.) In the USA most devices such as computers, some lamps, etc. have a 3rd wire connection to ground and make good discharge devices. One simply wants to minimize the potential difference between you, your work object, your soldering iron, and your coffee cup. Great anxiety is not necessary. John Ragle -- W1ZI = On 12/17/2010 4:18 AM, Kjeld Holm wrote: Dear all, I am about to install my subreceiver and would like to finish before the weekend but I have no ESD work place. How can I best protect the parts? Or do I have to wait until I can get the needed ESD equipment? OZ1CCM, Kjeld __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] kpa 500
On 12/17/2010 01:25 AM, Guy Olinger K2AV wrote: There is still an FCC limit of 15 db. Turning that around, the smallest legal amount of drive to put out 500 watts would be 15.8 watts. .. in the United States. 73 Jon LA4RT 73, Guy. On Thu, Dec 16, 2010 at 7:11 PM, William H. Droeger, Jr. k...@comcast.net wrote: Has anybody heard how much power out the k3/10 will drive the kpa500 amp to? As mostly a qrper it might be nice to have a lil juice once in a while. I can get 12w max out of my k3/10 and was hoping since the kpa500 is a solid state amp, I might get 400-500 watts out of it with 12 watts of drive. Thanks-Skip KT9T __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Using the K3 down to 461-KHz
I am licensed under the ARRL 600m Experimental Group which operates 495-510 KHz. The warc recommendations for 461-469, 471-478 KHz are below the current min. freq. for the K3, 480-KHz. Will the K3 operate down there with a firmware change or will it take hardware mods? If the allocation is approved our experimental license may be modified for operating (or cancelled since ham licenses will be approved). One of the deciding factors for buying my K3/10 was the ability to operate on MW bands (in TEST mode). If the K3 cannot move down there I will be forced to build a special transverter for the purpose. Just curious. 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 144-1.4kw, 432-100w*, 1296-testing*, 3400-winter? DUBUS Magazine USA Rep dubus...@hotmail.com == *temp not in service __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] wading pool
to all those who helped this wading pool type with the info on the k-3 thank you. will probly order one for xmas s/tony rowland __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 ESD
Kjeld, Go to the store and purchase a spray can of Static Guard - or by whatever name it is in your country. It is the product that the ladies would use to keep their static charged garments from clinging. Spray that on your clothing, chair and work area. The improvised wrist strap that others have suggested is also a good idea - be certain to add the resistor for your safety. 73, Don W3FPR On 12/17/2010 4:18 AM, Kjeld Holm wrote: Dear all, I am about to install my subreceiver and would like to finish before the weekend but I have no ESD work place. How can I best protect the parts? Or do I have to wait until I can get the needed ESD equipment? OZ1CCM, Kjeld __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Elecraft] Using the K3 down to 461-KHz
Hi Ed, I am very interested in your 600m experiment especially how to use K3 to set up + possible antenna alternatives. If you have read my recent posts in this reflector, you will know that I am drawing expertise from this group about 600m operation. In the recent Asia Pacific Telecommunity working group regarding Agenda Item 1.23 WRC2012, it has been seriously discussed among delegates from Asia Pacific countries in the national level. cheers, Johnny VR2XMC 寄件人﹕ Edward R. Cole kl...@acsalaska.net 收件人﹕ Elecraft@mailman.qth.net 傳送日期﹕ 2010/12/17 (五) 9:42:09 PM 主題： [Elecraft] Using the K3 down to 461-KHz I am licensed under the ARRL 600m Experimental Group which operates 495-510 KHz. The warc recommendations for 461-469, 471-478 KHz are below the current min. freq. for the K3, 480-KHz. Will the K3 operate down there with a firmware change or will it take hardware mods? If the allocation is approved our experimental license may be modified for operating (or cancelled since ham licenses will be approved). One of the deciding factors for buying my K3/10 was the ability to operate on MW bands (in TEST mode). If the K3 cannot move down there I will be forced to build a special transverter for the purpose. Just curious. 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 144-1.4kw, 432-100w*, 1296-testing*, 3400-winter? DUBUS Magazine USA Rep dubus...@hotmail.com == *temp not in service __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 ESD
Nobody has mentioned going barefoot, but doing so removes a major source of static buildup. Tony KT0NY __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Data A filter questions (solved)
Thanks for the note, Joe. You got me on the oversight of the firmware release note, that's sort of ancient history. However, it is also in the latest manual rev. Unfortunately, my desktop icon pointed to Rev D6, not the latest D9, so when I checked the manual, I found nothing. Nevertheless, I am now kicking myself, not for the oversight, (well a little) but for not having made a little video of this to show that even after resetting the PB CTRL Shift=.05, Lo/Hi still failed to work in Data A although it did, as it should, in CW. Unfortunately, (from a vindication standpoint anyway) after an overnight power down, this morning it is behaving normally. re: Your comment about the default filter, the normalized filter is 400 Hz but the default filter is whatever was selected the last time you were on that mode. I use M1-M4 for CW, SSB, Data A and AFSK A, respectively. Regardless of the filter setup when a memory was stored, when any data mode is recalled, you get the last filter configuration used in a digital mode. The manual is not very useful here, declaring that filter presets are stored, which is kind of ambiguous. So, the operational problem is solved, my bewilderment is not. Wes N7WS --- On Thu, 12/16/10, Joe Subich, W4TV li...@subich.com wrote: Wes, Here is a clue for the guys I hope start looking into this. I cannot toggle filter modes in CW either *if PB CTRL is set to .01, but can toggle if PB CTRL is set to .05.* That is correct operation. If PB CTRL = .01, HI/LO is disabled. You will find that information in the firmware release notes when the 10 Hz step was first released (MCU 3.25/DSP 2.21). Applies to CW and DATA only; LOCUT/HICUT cannot be used when 10 HZ shift steps are in effect; Width steps remain 50 Hz in all cases As to your 400 Hz filter, that is the default in all data modes. The width can be changed easily by using the Width knob or pressing XFIL to select the 2800 Hz roofing filter ... I program the PSK start-up macro in DXLab Suite/WinWarbler to set the bandwidth to 2800 Hz when ever the mode is set to PSK (or the K3 is set to DATA A). 73, ... Joe, W4TV On 12/16/2010 10:58 PM, Wes Stewart wrote: Don, Yes, in SSB I can toggle between Shift/Width to Lo/Hi. In data modes I cannot. I never paid attention to AFSK A before since I use 915 Hz for Mark and I never found it necessary to change the default shift of 1 KHz or to toggle to Lo/Hi. Here is a clue for the guys I hope start looking into this. I cannot toggle filter modes in CW either *if PB CTRL is set to .01, but can toggle if PB CTRL is set to .05.* Unfortunately, this isn't a fix for the data modes. Wes N7WS --- On Thu, 12/16/10, Don Wilhelmw3...@embarqmail.com wrote: Wes, Can you toggle between HI/LO and SHIFT/WIDTH when in SSB mode? I can shift between the two in all data modes except FSK D where they stay in SHIFT/WIDTH. Just wondering if your K3 is broken. 73, Don W3FPR On 12/16/2010 3:29 PM, Wes Stewart wrote: Don, and I'll reply to Monty here too, There is no question that I'm in Data A and my HI and LO controls do not function. I seldom use PSK, I prefer RTTY, but I'm sure that this didn't happen in the past. Just for giggles I rolled back my firmware to 4.0 sumptin' and I had the same issue. I generally leave the VFO set for example to 14.070 and click tune on the waterfall, but use HI and LO cut to select the signal of interest. As it stands the SHIFT range is so limited that I can't isolate lower tones. Wes __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] A Mini Module I would love to see (AC0LP)
A small board to insert 12 volts DC on the Coax at the shack and a similar board to pick it up at the antenna end to run relays or power remote tuners without impacting the RF carried on the coax. I really do not want to run a second set of cables just for this purpose. It would be great if it was configured with some more or less standard DPDT relay positions (optional of course) that could be populated as needed by the user to meet various switching needs. MFJ does offer such a beast (4116 and 4117 without the relays) - but I admit to some significant uncertainty in the quality of the design and the of the components used in the manufacturing. Jobst Vandrey AC0LP __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] W7RN update, request for band memory to retain diversity setting
Dick: I had to unsubscribe to the K3 discussion group. Even the digest version was overwhelming. Can you post this on my behalf: By the way, the Band Map error on the south station was from my cockpit error in calibrating the TXO in the K3's properly. Problem now resolved. First half contest season report from W7RN The four K3's performed flawlessly in M/2 and SO2R contests. I have replaced the two MicroHAM MK2R's with their new u2R SO2R boxes. They are much simpler and much more user friendly in a multiop environment and all of the nagging compatibility and stability issues with Elecraft-MicroHam-WinTest-WriteLog have disappeared. Our final request for 2010 for the Elecraft Team: Is there a software upgrade in the works for the radio to remember the sub-receiver and diversity settings when switching from band to band? That would remove the final roadblock from the operator having to use ONLY the band switch to change bands at our station (the sub-receiver stays on from band to band while the diversity goes off). Our final request to the logging program gurus is for each operator to be able to select their own profile of keyboard key-mapping functions when they log-on to operate. This is the time of year for wish lists, ne pas? Tom Taormina, K5RC The Comstock Memorial Station, W7RN Virginia City NV http://k5rc.cc __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Fw: Reduced gain/efficiency in SSB
Subject: Re: [Elecraft] Reduced gain/efficiency in SSB Hi, I run mic gain in high, front panel, and gain set at max 60 setting. Compression is 18. Get good audio reports. Mic is Astatic D-104 I bought in 1955 (as a kid) for $1.00 (half of my weekly allowance) It was on a consignment shelf at a radio parts store. It looks good and is still going strong. 73 de Jack / W7LD / Lucky Dog - Original Message - From: br...@brianlinn.com To: elecraft@mailman.qth.net Sent: Thursday, December 16, 2010 3:54 PM Subject: Re: [Elecraft] Reduced gain/efficiency in SSB Following up on mic gain required, I'd like to inquire as to the reasonableness of my settings. Mic: Heil PR-781 straight into the K3 Mic Level: 55 Mic Bias: High Compression: 18 TX EQ: modest adjustment center, nothing wild Audio Reports: great audio Seems like a higher mic level than most run. It's the same for my Audio Technica headset. Thoughts? Brian KD0HII s/n 3672 1. With Heil HC5, the needed MIC gain for same ALC deflection is now 25 instead of 17 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Icom failure to update USB
Not trying to start another thread here, but here is just ONE example of why Elecraft continues to use the RS-232 I/O. Gee, Win7 has been out quite a while. This from the IC-7600 reflector: Dan -- N3ND 1a. Re: Silicon Labs CP210x USB to UART Bridge driver Posted by: Cameron Platts cpla...@verizon.net camplatts Date: Thu Dec 16, 2010 8:52 am ((PST)) Hi John, I should have identified that I am using Windows 7 x64 as the operating system; officially ICOM has not released USB drivers for Windows 7 as of this email. Hopefully the level issue will be addressed with the new release. 73es, Cam __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 ESD
As the KRX3 manual says (pg 5), avoid voltage differences between yourself and the components. If you don't have an anti-static mat or wrist strap: DO NOT use carpet on your work bench (a common practice before solid state). Wood, Formica, etc., is fine. Metal is also okay for this, but not a good practice for any bench on which you'll power up a rig. DO NOT use Styrofoam or other plastics to hold parts other than the pink bags some parts are shipped in. DO touch an unpainted metal ground often while working. (When without a pad I touch a ground every time before picking up an electronic part or pcb - it only takes a fraction of a second to do so.) DO touch an unpainted metal part of the K3 itself after picking up a part and before touching the part to the K3. (That equalizes any possible voltage difference between you - and the part you're holding - and the K3 so the charge won't flow through the part.) If you ground the metal case of the K3, you can touch it before picking up each part to accomplish both objectives at the same time. The Mains supply safety ground is a perfectly good ground to use to discharge yourself. There's more background on page 5 of the KRX3 manual, but the above steps will keep you and the parts safe without a dedicated ESD workstation. Ron AC7AC -Original Message- Dear all, I am about to install my subreceiver and would like to finish before the weekend but I have no ESD work place. How can I best protect the parts? Or do I have to wait until I can get the needed ESD equipment? OZ1CCM, Kjeld __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 ESD
I've mentioned this idea before but I like it so much I'll repeat it: I attached a metal yardstick (meter stick) to the front of my workbench and connected it to ground through a 1 meg resistor. My arms naturally fall on it, and it is invaluable when building kits and cutting wire to length. I have an aluminum muffin tin for holding parts which is also connected to ground via a resistor. I use a wrist strap and mat too, but I suspect the ruler would be enough by itself. On 12/17/2010 8:22 AM, Ron D'Eau Claire wrote: As the KRX3 manual says (pg 5), avoid voltage differences between yourself and the components. If you don't have an anti-static mat or wrist strap: DO NOT use carpet on your work bench (a common practice before solid state). Wood, Formica, etc., is fine. Metal is also okay for this, but not a good practice for any bench on which you'll power up a rig. DO NOT use Styrofoam or other plastics to hold parts other than the pink bags some parts are shipped in. DO touch an unpainted metal ground often while working. (When without a pad I touch a ground every time before picking up an electronic part or pcb - it only takes a fraction of a second to do so.) DO touch an unpainted metal part of the K3 itself after picking up a part and before touching the part to the K3. (That equalizes any possible voltage difference between you - and the part you're holding - and the K3 so the charge won't flow through the part.) If you ground the metal case of the K3, you can touch it before picking up each part to accomplish both objectives at the same time. The Mains supply safety ground is a perfectly good ground to use to discharge yourself. There's more background on page 5 of the KRX3 manual, but the above steps will keep you and the parts safe without a dedicated ESD workstation. Ron AC7AC -Original Message- Dear all, I am about to install my subreceiver and would like to finish before the weekend but I have no ESD work place. How can I best protect the parts? Or do I have to wait until I can get the needed ESD equipment? OZ1CCM, Kjeld __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- Vic, K2VCO Fresno CA http://www.qsl.net/k2vco/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 to KRC2 problem
My K3 has worked flawlessly up until now. Lately when you Grab a DX Spot or punch in a band change on HamRadioDeluxe the KRC-2 fails to make the proper change of the Antenna Selection. If you then push the Band Up or Band Down buttons on the K3 radio and back to the band desired Then the KRC-2 does go to the correct Antenna selection. It makes things a little difficult for me as I am presently 1200 miles away from the radio. This weekend a friend will be there operating the station so its my chance for him to look at a few things and maybe correct the problem. Anyone have any good ideas of where or what to look at? John k9uwa John Goller, K9UWA Jean Goller, N9PXF Antique Radio Restorations k9...@arrl.net Visit our Web Site at: http://www.JohnJeanAntiqueRadio.com 4836 Ranch Road Leo, IN 46765 USA 1-260-637-6426 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 ESD
NO no no ... you don't want to connect yourself to ground. You want to connect yourself to whatever semi-conducting surface you are working on (the one that the K3 and it's components are resting on). Connecting yourself to ground merely increases the chance that there will be a potential between you and the rig. I simply laid out a large enough amount of aluminum foil to hold everything, wrapped a bare wire around my arm just above my elbow, and used a clip lead to connect the bare wire to the aluminum foil. I know everyone recommends a large value resistor be placed in series with the bare wire for safety reasons, but I did all this on a large wooden table several feet away from anything else and skin resistance here in dry Arizona is fairly high anyway. Dave AB7E On 12/17/2010 2:34 AM, David Pratt wrote: Wear cotton clothing rather than nylon or highly static material; avoid walking around on static-prone carpets. Wrap a length of bare copper wire around your wrist and solder a 2 megohm resistor to it. Connect that to a nearby ground connection. Just ensure that the K3 is always at the same potential as yourself by touching its frame regularly. You should be okay at that. 73 de David G4DMP In a recent message, Kjeld Holmk...@kh-translation.dk writes I am about to install my subreceiver and would like to finish before the weekend but I have no ESD work place. How can I best protect the parts? Or do I have to wait until I can get the needed ESD equipment? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Soldering Naked
I was 12 years old... I think it was a Heathkit HW ??? I woke up early ready to sling solder. My bed was next to my shack/workbench. The parents and sister were all sleeping... Then it happened... A large blob of solder slipped off the iron onto Mr Happy! (My new best friend) Shrieking and shouting... the blob stuck. The noise from my room awakened Sister and her sleepover friend. (The one I had the sweets for.) They stormed into my room followed by Mom and Dad. Sisters friend was first into the room causing her to squeal as she tried to turn around and run out of the door she just came into. Thereby running into Sis and parents. The solder was still stuck and still hot. By parents wanted to call the Doctor...but I had enough humiliation for one day so my Mom gave me the ointment and that was that. Durring breakfast no one said anything about the early morning event. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] AFSK
I'm unable to transmit an AFSK signal in DATA mode, although I can transmit via the same LINE IN in DATA A mode. The line output from my SignaLink USB soundcard does have the audio signal on it and is connected to the Line In mono jack on the K3. For MIC SEL in configuration, I have Line In selected. DATA MD is set to AFSK A and shows 45 bps. PITCH is set to 915-170. Using MMTTY software and the latest K3 firmware the K3 goes into transmit mode (audio signal is present on cable feeding K3's Line In) but no modulation. What am I missing?? I should mention this was working as early as 3 weeks ago and I have NO idea what has changed.Just reloaded the K3 firmware and checked all MTTY option parameters but all look good and as I mentioned..Data A xmits the RTTY signals but not AFSK. Larry K1UO -- View this message in context: http://elecraft.365791.n2.nabble.com/AFSK-tp5845592p5845592.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] Soldering Naked
Eric - Please end this thread immediately! I could not survive another laugh attack like that one. - Jim, KL7CC Phil Townsend wrote: I was 12 years old... I think it was a Heathkit HW ??? I woke up early ready to sling solder. My bed was next to my shack/workbench. The parents and sister were all sleeping... Then it happened... A large blob of solder slipped off the iron onto Mr Happy! (My new best friend) Shrieking and shouting... the blob stuck. The noise from my room awakened Sister and her sleepover friend. (The one I had the sweets for.) They stormed into my room followed by Mom and Dad. Sisters friend was first into the room causing her to squeal as she tried to turn around and run out of the door she just came into. Thereby running into Sis and parents. The solder was still stuck and still hot. By parents wanted to call the Doctor...but I had enough humiliation for one day so my Mom gave me the ointment and that was that. Durring breakfast no one said anything about the early morning event. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Soldering Naked
Roflmao. See what I mean? Barefoot ok, naked not ok. Tony KT0NY On Dec 17, 2010 11:48 AM, Phil Townsend phi...@mac.com wrote: I was 12 years old... I think it was a Heathkit HW ??? I woke up early ready to sling solder. My bed was next to my shack/workbench. The parents and sister were all sleeping... Then it happened... A large blob of solder slipped off the iron onto Mr Happy! (My new best friend) Shrieking and shouting... the blob stuck. The noise from my room awakened Sister and her sleepover friend. (The one I had the sweets for.) They stormed into my room followed by Mom and Dad. Sisters friend was first into the room causing her to squeal as she tried to turn around and run out of the door she just came into. Thereby running into Sis and parents. The solder was still stuck and still hot. By parents wanted to call the Doctor...but I had enough humiliation for one day so my Mom gave me the ointment and that was that. Durring breakfast no one said anything about the early morning event. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Soldering Naked
This is exactly the same advise given by a doctor on a straight razor forum about shaving! He mentioned something about Darwin and genomes. 73, Rick Dettinger K7MW Roflmao. See what I mean? Barefoot ok, naked not 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] Soldering Naked
That tops the email I got about the guy buying his wife a stun gun which he then tried upon himself Phil. 73s Jim, W4ATK On Dec 17, 2010, at 11:48 AM, Phil Townsend wrote: I was 12 years old... I think it was a Heathkit HW ??? I woke up early ready to sling solder. My bed was next to my shack/ workbench. The parents and sister were all sleeping... Then it happened... A large blob of solder slipped off the iron onto Mr Happy! (My new best friend) Shrieking and shouting... the blob stuck. The noise from my room awakened Sister and her sleepover friend. (The one I had the sweets for.) They stormed into my room followed by Mom and Dad. Sisters friend was first into the room causing her to squeal as she tried to turn around and run out of the door she just came into. Thereby running into Sis and parents. The solder was still stuck and still hot. By parents wanted to call the Doctor...but I had enough humiliation for one day so my Mom gave me the ointment and that was that. Durring breakfast no one said anything about the early morning event. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html JIM ROGERS w4...@bellsouth.net http://web.me.com/jimrogers_w4atk __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 ESD
Proper electrostatic mats are cheap and readily available. A local electronics shop in Seattle sells 3x4 foot sheets of the material for about $30, and they tend to charge higher prices since they are the only local source for electronic components. Also, Radio Shack sells a folding plastic model complete with wrist strap, resistor and clip. Although some on the reflector question whether the Radio Shack model is sufficiently competent for the task, I have had mine for many years and built a K2 and K3 on it with no problems, and for some of it I was working over carpet. Why pay so much for a high quality radio and then scrimp on the anti static mat? -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Vic K2VCO Sent: Friday, December 17, 2010 8:51 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 ESD I've mentioned this idea before but I like it so much I'll repeat it: I attached a metal yardstick (meter stick) to the front of my workbench and connected it to ground through a 1 meg resistor. My arms naturally fall on it, and it is invaluable when building kits and cutting wire to length. I have an aluminum muffin tin for holding parts which is also connected to ground via a resistor. I use a wrist strap and mat too, but I suspect the ruler would be enough by itself. On 12/17/2010 8:22 AM, Ron D'Eau Claire wrote: As the KRX3 manual says (pg 5), avoid voltage differences between yourself and the components. If you don't have an anti-static mat or wrist strap: DO NOT use carpet on your work bench (a common practice before solid state). Wood, Formica, etc., is fine. Metal is also okay for this, but not a good practice for any bench on which you'll power up a rig. DO NOT use Styrofoam or other plastics to hold parts other than the pink bags some parts are shipped in. DO touch an unpainted metal ground often while working. (When without a pad I touch a ground every time before picking up an electronic part or pcb - it only takes a fraction of a second to do so.) DO touch an unpainted metal part of the K3 itself after picking up a part and before touching the part to the K3. (That equalizes any possible voltage difference between you - and the part you're holding - and the K3 so the charge won't flow through the part.) If you ground the metal case of the K3, you can touch it before picking up each part to accomplish both objectives at the same time. The Mains supply safety ground is a perfectly good ground to use to discharge yourself. There's more background on page 5 of the KRX3 manual, but the above steps will keep you and the parts safe without a dedicated ESD workstation. Ron AC7AC -Original Message- Dear all, I am about to install my subreceiver and would like to finish before the weekend but I have no ESD work place. How can I best protect the parts? Or do I have to wait until I can get the needed ESD equipment? OZ1CCM, Kjeld __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- Vic, K2VCO Fresno CA http://www.qsl.net/k2vco/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] AFSK
Is MMTTY set to transmit 915 Hz? Wes N7WS --- On Fri, 12/17/10, Larry K1UO k...@uninet.net wrote: From: Larry K1UO k...@uninet.net Subject: [Elecraft] AFSK To: elecraft@mailman.qth.net Date: Friday, December 17, 2010, 10:51 AM I'm unable to transmit an AFSK signal in DATA mode, although I can transmit via the same LINE IN in DATA A mode. The line output from my SignaLink USB soundcard does have the audio signal on it and is connected to the Line In mono jack on the K3. For MIC SEL in configuration, I have Line In selected. DATA MD is set to AFSK A and shows 45 bps. PITCH is set to 915-170. Using MMTTY software and the latest K3 firmware the K3 goes into transmit mode (audio signal is present on cable feeding K3's Line In) but no modulation. What am I missing?? I should mention this was working as early as 3 weeks ago and I have NO idea what has changed. Just reloaded the K3 firmware and checked all MTTY option parameters but all look good and as I mentioned..Data A xmits the RTTY signals but not AFSK. Larry K1UO -- View this message in context: http://elecraft.365791.n2.nabble.com/AFSK-tp5845592p5845592.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
Re: [Elecraft] K3 ESD
Nobody disputes that OM, but read the original post. He is wishing to improvise until his ESD station arrives. In a recent message, George A. Thornton gthorn...@thorntonmostullaw.com writes [snip] Why pay so much for a high quality radio and then scrimp on the anti static mat? -- + - - - - - - - - - - - - - - - - + | David M Pratt, Kippax, Leeds. | | Website: http://www.g4dmp.co.uk | + - - - - - - - - - - - - - - - - + __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] AFSK
Wes is correct. Please make sure you check: 1. Baud rate on the K3 should be 45 (if that is what your software is using) 2. If you have the mark freq set to 915 Hz (pitch) on the K3 then your soundcard software for RTTY must also be 915 Hz. 73 Greg AB7R On Fri, Dec 17, 2010 at 9:51 AM, Larry K1UO k...@uninet.net wrote: I'm unable to transmit an AFSK signal in DATA mode, although I can transmit via the same LINE IN in DATA A mode. The line output from my SignaLink USB soundcard does have the audio signal on it and is connected to the Line In mono jack on the K3. For MIC SEL in configuration, I have Line In selected. DATA MD is set to AFSK A and shows 45 bps. PITCH is set to 915-170. Using MMTTY software and the latest K3 firmware the K3 goes into transmit mode (audio signal is present on cable feeding K3's Line In) but no modulation. What am I missing?? I should mention this was working as early as 3 weeks ago and I have NO idea what has changed.Just reloaded the K3 firmware and checked all MTTY option parameters but all look good and as I mentioned..Data A xmits the RTTY signals but not AFSK. Larry K1UO -- View this message in context: http://elecraft.365791.n2.nabble.com/AFSK-tp5845592p5845592.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
Re: [Elecraft] K3 ESD
I stand corrected, thanks. I have been pretty busy and did not take the time to read all the way back. -Original Message- From: David Pratt [mailto:da...@g4dmp.fsnet.co.uk] Sent: Friday, December 17, 2010 11:50 AM To: George A. Thornton Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 ESD Nobody disputes that OM, but read the original post. He is wishing to improvise until his ESD station arrives. In a recent message, George A. Thornton gthorn...@thorntonmostullaw.com writes [snip] Why pay so much for a high quality radio and then scrimp on the anti static mat? -- + - - - - - - - - - - - - - - - - + | David M Pratt, Kippax, Leeds. | | Website: http://www.g4dmp.co.uk | + - - - - - - - - - - - - - - - - + __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Soldering Naked
Hopefully, this lesson served as an advance warning about the hazards of frying bacon when similarly (un)attired! 73 - Ken, VE3HLS --- On Fri, 12/17/10, Phil Townsend phi...@mac.com wrote: From: Phil Townsend phi...@mac.com Subject: [Elecraft] Soldering Naked To: Cc: elecraft@mailman.qth.net Date: Friday, December 17, 2010, 12:48 PM I was 12 years old... I think it was a Heathkit HW ??? I woke up early ready to sling solder. My bed was next to my shack/workbench. The parents and sister were all sleeping... Then it happened... A large blob of solder slipped off the iron onto Mr Happy! (My new best friend) Shrieking and shouting... the blob stuck. The noise from my room awakened Sister and her sleepover friend. (The one I had the sweets for.) They stormed into my room followed by Mom and Dad. Sisters friend was first into the room causing her to squeal as she tried to turn around and run out of the door she just came into. Thereby running into Sis and parents. The solder was still stuck and still hot. By parents wanted to call the Doctor...but I had enough humiliation for one day so my Mom gave me the ointment and that was that. Durring breakfast no one said anything about the early morning event. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] AFSK
All fixed.. The only thing I did was reload my saved options file in MMTTY and all is well again!! Somehow something got scrambled. 73 Larry K1UO __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 Mini Module I would love to see (AC0LP)
Many years ago I built a remote antenna switch that allowed feeding up to 4 antennas from the same feedline. The feedline also was used for the control signal, so no additional wires were needed. It was a very simple circuit. The switch box at the top of the tower contained 5 coax connectors, two DPDT relays, two diodes, an RF choke and a couple capacitors. The control box in the shack contained 2 coax connectors, a 60-Hz power transformer, a 4-position switch, an RF choke, two diodes and a couple capacitors. The schematic is at http://www.cds1.net/~n1al/ham/ant_switch.GIF The electrolytic capacitors in the switch box may not be needed, depending on the relays. I believe I used 0.1 uF for the coupling and bypass capacitors something like 22 or 47 uH for the RF chokes. (A smaller choke might be required for VHF.) The transformer was chosen to provide the correct relay voltage. You may need to add resistors in series with the relay coils to fine-tune the voltage. Al N1AL On Fri, 2010-12-17 at 07:48 -0800, Jobst Vandrey wrote: A small board to insert 12 volts DC on the Coax at the shack and a similar board to pick it up at the antenna end to run relays or power remote tuners without impacting the RF carried on the coax. I really do not want to run a second set of cables just for this purpose. It would be great if it was configured with some more or less standard DPDT relay positions (optional of course) that could be populated as needed by the user to meet various switching needs. MFJ does offer such a beast (4116 and 4117 without the relays) - but I admit to some significant uncertainty in the quality of the design and the of the components used in the manufacturing. Jobst Vandrey AC0LP __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 Mini Module I would love to see (AC0LP)
See QST July 2004. Very simple way to do this.Geo/W2BPI __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] The wait is over!
Just got an email from UPS with the tracking number. My K3/P3 has been shipped and has a delivery date of the 23rd. It WILL get here by Christmas -- Thanks Elecraft. Jim - W0EB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Re： The wait is over!
Very good, Jim. You will have new toys to play during Christmas. cheers, Johnny VR2XMC 寄件人﹕ Jim Sheldon w...@cox.net 收件人﹕ Elecraft Mailing List elecraft@mailman.qth.net 傳送日期﹕ 2010/12/18 (六) 8:36:06 AM 主題： [Elecraft] The wait is over! Just got an email from UPS with the tracking number. My K3/P3 has been shipped and has a delivery date of the 23rd. It WILL get here by Christmas -- Thanks Elecraft. Jim - W0EB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Soldering Naked
A classic, Phil! I've had solder drop on my leg while wearing shorts, but that was the worst for me. BTW, my wife came in to see what I was laughing about and I had her read your post. She didn't get it - though Mr. Happy referred to a toy or stuffed animal :.) Barry W2UP Phil Townsend wrote: I was 12 years old... I think it was a Heathkit HW ??? I woke up early ready to sling solder. My bed was next to my shack/workbench. The parents and sister were all sleeping... Then it happened... A large blob of solder slipped off the iron onto Mr Happy! (My new best friend) Shrieking and shouting... the blob stuck. The noise from my room awakened Sister and her sleepover friend. (The one I had the sweets for.) They stormed into my room followed by Mom and Dad. Sisters friend was first into the room causing her to squeal as she tried to turn around and run out of the door she just came into. Thereby running into Sis and parents. The solder was still stuck and still hot. By parents wanted to call the Doctor...but I had enough humiliation for one day so my Mom gave me the ointment and that was that. Durring breakfast no one said anything about the early morning event. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-ESD-tp5844885p5847272.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] Soldering Naked
Toy yes! Stuffed... God I hope not! Sent from my iPad On Dec 17, 2010, at 5:54 PM, Barry w...@comcast.net wrote: A classic, Phil! I've had solder drop on my leg while wearing shorts, but that was the worst for me. BTW, my wife came in to see what I was laughing about and I had her read your post. She didn't get it - though Mr. Happy referred to a toy or stuffed animal :.) Barry W2UP Phil Townsend wrote: I was 12 years old... I think it was a Heathkit HW ??? I woke up early ready to sling solder. My bed was next to my shack/workbench. The parents and sister were all sleeping... Then it happened... A large blob of solder slipped off the iron onto Mr Happy! (My new best friend) Shrieking and shouting... the blob stuck. The noise from my room awakened Sister and her sleepover friend. (The one I had the sweets for.) They stormed into my room followed by Mom and Dad. Sisters friend was first into the room causing her to squeal as she tried to turn around and run out of the door she just came into. Thereby running into Sis and parents. The solder was still stuck and still hot. By parents wanted to call the Doctor...but I had enough humiliation for one day so my Mom gave me the ointment and that was that. Durring breakfast no one said anything about the early morning event. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-ESD-tp5844885p5847272.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
Re: [Elecraft] Soldering Naked
This same thing happened to me - I was about 35 at the time and I threw the soldering iron across the room and it landed on the rya shag rug, burning an outline of the iron into the wool rug. I've still got the scar - see, right here... and the project was a HW-202... -Rex- K1HI Rex Lint Merrimack, NH WWW.QRZ.COM/db/k1hi -Original Message- Phil Townsend wrote: I was 12 years old... I think it was a Heathkit HW ??? I woke up early ready to sling solder. My bed was next to my shack/workbench. The parents and sister were all sleeping... Then it happened... A large blob of solder slipped off the iron onto Mr Happy! (My new best friend) Shrieking and shouting... the blob stuck. The noise from my room awakened Sister and her sleepover friend. (The one I had the sweets for.) They stormed into my room followed by Mom and Dad. Sisters friend was first into the room causing her to squeal as she tried to turn around and run out of the door she just came into. Thereby running into Sis and parents. The solder was still stuck and still hot. By parents wanted to call the Doctor...but I had enough humiliation for one day so my Mom gave me the ointment and that was that. Durring breakfast no one said anything about the early morning event. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-ESD-tp5844885p5847272.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 mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Use of DB9 Switch with K3?
At times, my microHam CW Keyer is connected to my K3 via the P3. However, when I want to download new firmware for the K3, I have to disconnect the CW Keyer from the RS232 port, and connect the DB9 from the computer's serial port to the K3 via the P3. Can I use a DB9 A/B switch to switch between the the two DB9 cables without creating any problems? 73, George George Wagner, K5KG Sarasota, FL 941-400-1960 cell __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Use of DB9 Switch with K3?
I use two, in series. Dick, K6KR Dick On Dec 17, 2010, at 19:45, georgek...@aol.com wrote: At times, my microHam CW Keyer is connected to my K3 via the P3. However, when I want to download new firmware for the K3, I have to disconnect the CW Keyer from the RS232 port, and connect the DB9 from the computer's serial port to the K3 via the P3. Can I use a DB9 A/B switch to switch between the the two DB9 cables without creating any problems? 73, George George Wagner, K5KG Sarasota, FL 941-400-1960 cell __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Soldering Naked
Mr. Happy likes the K3 No Solder Kit. Steve N4LQ - Original Message - From: Rex Lint r...@lint.mv.com To: 'Phil Townsend' phi...@mac.com; 'Barry' w...@comcast.net Cc: elecraft@mailman.qth.net Sent: Friday, December 17, 2010 10:12 PM Subject: Re: [Elecraft] Soldering Naked This same thing happened to me - I was about 35 at the time and I threw the soldering iron across the room and it landed on the rya shag rug, burning an outline of the iron into the wool rug. I've still got the scar - see, right here... and the project was a HW-202... -Rex- K1HI Rex Lint Merrimack, NH WWW.QRZ.COM/db/k1hi -Original Message- Phil Townsend wrote: I was 12 years old... I think it was a Heathkit HW ??? I woke up early ready to sling solder. My bed was next to my shack/workbench. The parents and sister were all sleeping... Then it happened... A large blob of solder slipped off the iron onto Mr Happy! (My new best friend) Shrieking and shouting... the blob stuck. The noise from my room awakened Sister and her sleepover friend. (The one I had the sweets for.) They stormed into my room followed by Mom and Dad. Sisters friend was first into the room causing her to squeal as she tried to turn around and run out of the door she just came into. Thereby running into Sis and parents. The solder was still stuck and still hot. By parents wanted to call the Doctor...but I had enough humiliation for one day so my Mom gave me the ointment and that was that. Durring breakfast no one said anything about the early morning event. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-ESD-tp5844885p5847272.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 mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Use of DB9 Switch with K3?
Hi, George. I use three DB9 ABCD switches in my SO2R station. Let's call them Left, Right and Development computer. I write software for the K3 and I very frequently need to send firmware from my development computer to one of my two K3s. Each of two K3s is connected to the common center connector of the corresponding Left and Right DB9 ABCD switches. The A input of the Left and Right DB9 ABCD switches is connected to MK2R+ cables. The B input of the left and right DB9 ABCD switches goes to A and B of the Development computer switch. The center of the Development computer switch goes thru a KUSB USB to Serial adapter to my development computer. To operate with the MK2R+, I switch both Left and Right DB9 switches to A. To load firmware, I switch both Left and Right DB9 switches to B. I switch the Development computer DB9 switch to A to load the left K3 with firmware, and B to load the right K3 with firmware. I've had no difficulties with two of these boxes in series. I use a one meter DB9 straight through jumper from Left and Right DB9 switches to the back panel of my K3s. I use another one meter jumper from the Left and Right DB9 switches to the Development Computer DB9 switch. I use a two meter or sometimes two two-meter jumpers from the development computer to the Development computer DB9 switch. Whew! A picture would be easier, I think. 73 de Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of georgek...@aol.com Sent: Friday, December 17, 2010 7:45 PM To: supp...@microham.com; elecraft@mailman.qth.net Subject: [Elecraft] Use of DB9 Switch with K3? At times, my microHam CW Keyer is connected to my K3 via the P3. However, when I want to download new firmware for the K3, I have to disconnect the CW Keyer from the RS232 port, and connect the DB9 from the computer's serial port to the K3 via the P3. Can I use a DB9 A/B switch to switch between the the two DB9 cables without creating any problems? 73, George George Wagner, K5KG Sarasota, FL 941-400-1960 cell __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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
