Re: [Elecraft] [OT] Grounding negative side of power supply?
The safety problem is that, with typical ham radio equipment, that negative connection is connected to exposed metalwork, e.g. on the K2, the microphone socket, bezel screws and headphone socket on the front panel, any morse key and the multiple sockets on the back panel. The paintwork, also, isn't designed for electrical isolation. If there is a fault in the power supply transformer, these can become hot to AC; a Class II power supply addresses this (most amateur radio supplies are not Class II - any that has an earth wire is not Class II). If the rig is grounded to the real earth, electrical faults, or lightning can produce a dangerous voltage between it and other metalwork, which should be connected to mains earth according to your NEC/Building Regulations; ensuring that there is no real ground connected to the rig addresses this one. It doesn't, of course have to be the negative side; there is no absolute rule against positive earth systems, it is just that valves and current generation semiconductors are naturally negative earth devices. The original, alloy junction, PNP transistors favoured positive common systems. Joe Planisky wrote: Correct, and I agree that the power supply chassis should be connected to the AC (mains) safety ground. But that wasn't the situation I was asking about. I was asking whether the negative side of the DC output should be connected to the chassis. -- David Woolley we do not overly restrict the subject matter on the list, and we encourage postings on a wide range of amateur radio related topics List Guidelines http://www.elecraft.com/elecraft_list_guidelines.htm __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 Foam Protectors
Last summer I described the front/rear panel foam protectors that I have designed for the K3. I had some dies fabricated for the foam company to stamp out closed-cell foam protectors for the front and rear panels of the K3 for transport. I have them glue 1/16 PVC sheets to the foam so that any shock is distributed over the entire foam surface with very little impact transferred to the K3. Go to www.w0yk.com/k3_foam_protectors.htm and see how I use these protectors to take two K3s in custom Rose Kopp cases and three laptops (plus a lot of other stuff like cables, manuals, power modules, trackballs, cameras, headphones, etc.) as carry-ons in my International travels. Note that it is a very different transport strategy than using Pelican or other hard cases that are more bulky and often only feasible as checked baggage. Since TSA came into being and rifles through our luggage without us being present I've been reluctant to subject my K3s to that routine. Thus, this carry-on strategy. In any case, if whatever transport mechanism you use might benefit from these protectors, I can supply them at $15/set plus shipping. The USPS flat-cost medium box shipper is $10.70 which can take two sets anywhere in CONUS. I just had another production run made this week and a few extra sets are available. If there is more demand, I'll do another run which can be done with one day turn-around. Ed - W0YK --- Ed Muns Muns Vineyard - www.munsvineyard.com FaceBook - www.facebook.com/munsvineyard __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] ATU END
I think that normally indicates an attempt to Tx out of band 73 de M0XDF, K3 #174 -- What is the purpose of the giant sequoia tree? The purpose of the giant sequoia tree is to provide shade for the tiny titmouse. -Edward Abbey, naturalist and author (1927-1989) On 21 Jan 2010, at 05:35, telegrap...@att.net wrote: for some reason this evening when i tap the ATU button to check the tuning on various bands, started with 6 meters, i get the word END that pops up on the display. Have no idea what i may have done.. All indications are normal and i used the rig today on 20 CW, again this evening on 6 SSB after fooling around with it. the ATU is enabled on all bands and not in Bypass. Does the same thing whether i'm in CW or SSb mode which are the two i operate 99 percent of the time anyway. Any one tell me what's going on? Larry W0OGH #763 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] WTB: XV432 Transverter (receive-only OK)
Folks, I'm in great need of a 432 MHz transverter (actually if the transmitter doesn't work, that's OK). I'm in the SE Mich area, and can meet someone to pick it up. This is work-related, and I need it for a road trip that is currently (last-minute) scheduled for this coming Monday, Jan 25, 2010 into Canada and back. I plan to use it with an RFSpace SDR to listen to 433.92 MHz for signals while on the road. The RFSpace box comes with a spectrum waterfall display and can record and play back any signals I hear across a wide spectrum around the nominal center frequency. It normally only covers up to 30 MHz, but with a suitable downconverter front end, can be made to work on UHF. If you don't want to sell it, if I could borrow/rent it from you, that would be even better. Please respond to the list or direct to my email ASAP. I'll be checking it from work today and tomorrow. 73, -- Dave, N8SBE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Grounding negative side of power supply?
In many US homes the utility ground is found inside the home as it is a ground rod embedded in the poured concrete foundation immediately below the power panel. 73 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
Re: [Elecraft] Grounding negative side of power supply?
Another commonly used ground is the water system. Check your water meter. If there is a heavy jumper around it, chances are the grounding wire from the service entrance connects to the cold water system. David K0LUM At 7:17 AM -0500 1/21/10, Jim Miller wrote: In many US homes the utility ground is found inside the home as it is a ground rod embedded in the poured concrete foundation immediately below the power panel. 73 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] FS: KPA100 + KAT100 ** NICE KIT **
FOR SALE: Nice KPA100 + KAT100 in same enclosure. A perfect fit for your actual K2 QRP radio !!! The kit has been built in autumn 2009. This was my third KPA100 and KAT100 kit, so the unit is nicely and perfectly built and 100% functional of course. Comestic is almost 100%. I'm asking 500$ USD + shipping in USA or Canada only, paid with Paypal verified address only. Come with the following items: * KPA100 + KAT100 in the same enclosure * KPA100 + KAT100 manuals * DC cable * Control cable between the K2 and the KPA100 * RF cable between the K2 and the KPA100 If you are interested, contact me off the list at my email address at: jf.va2ss AT gmail DOT com J-F VA2SS -- View this message in context: http://n2.nabble.com/FS-KPA100-KAT100-NICE-KIT-tp4433718p4433718.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] W2 assembly
I am assembling a W2 wattmeter. So far so good. Removing the baked on paint for electrical conductivity at the holes is turning out to be a real pain. Does anyone have a tip for an efficient method for doing this? So far the best I have found is scratching with the tip of a knife. Perhaps Elecraft could have this area masked off during the paint process. Jim/N1NK K3 2295 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 Foam Protectors
Hi Ed, Are you hauling yours to Dayton? I'd like to eyeball it then. 73, Julius - Julius Fazekas N2WN Tennessee Contest Group http://www.k4ro.net/tcg/index.html Tennessee QSO Party http://www.tnqp.org/ Elecraft K2/100 #4455 Elecraft K3/100 #366 Elecraft K3#1875 -- View this message in context: http://n2.nabble.com/K3-Foam-Protectors-tp4432365p4434092.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] Re： W2 assembly
Hello Jim, I use a very coarse sand paper to remove the paint. In K2, Elecraft did mask off some of the contact areas. I just don't know why they don't do that on W2. I suppose the cost to do that should be minimal to Elecraft. cheers, Johnny VR2XMC - 郵件原件 寄件人﹕ Jim Spears n...@cox.net 收件人﹕ elecraft@mailman.qth.net 傳送日期﹕ 2010/1/21 (四) 10:53:13 PM 主題： [Elecraft] W2 assembly I am assembling a W2 wattmeter. So far so good. Removing the baked on paint for electrical conductivity at the holes is turning out to be a real pain. Does anyone have a tip for an efficient method for doing this? So far the best I have found is scratching with the tip of a knife. Perhaps Elecraft could have this area masked off during the paint process. Jim/N1NK K3 2295 Yahoo!香港提供網上安全攻略，教你如何防範黑客! 請前往 http://hk.promo.yahoo.com/security/ 了解更多! __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 and N4PY Software
Computer control can really add to the enjoyment to using a K3. I thought I'd pass along my experience. I've been using computer control with my radios for years. The newest version of the N4PY rig control program is a good match to the capabilities of the K3. Using N4PY I can perform most of the radio functions from the keyboard and the mouse. Easy QSY is a good example. There are separate buttons for two or three modes per band. The Band/Mode buttons return you to your last frequency for that mode on that band. It's much better than a memory that will only go to a preset frequency. The program allows you to use the mouse wheel for up to ten different functions. I usually use it to change frequency. But, if I hit a key on the keypad the wheel can be a volume control. Hit another keypad number and the wheel is RF gain or RIT or pass band tuning or filter width. There are lots of possibilities. The program controls the K3's functions and extends that control to external equipment. It interfaces directly with PowerSDR-IQ when using a LP-Pan panadapter to allow clicking on the panadapter screen for changing frequency. It interfaces with the K1EL Winkeyer, LP100A wattmeter, LDG tuners and coax switches, and some Tokyo High Power or Acom amps. The program has all the bells and whistles but has a clean and simple user interface. The learning curve is relatively short. If a K3 button is not part of the standard N4PY program interface, there are six user-defined buttons to control any tap or hold button on the radio. If you are interested in a different way to operate your K3, the N4PY program is worth a try. It's not a free program, but a time-limited trial version is available. I have no financial interest in this software, or any other for that matter. Just a very satisfied customer. 73 de K1ESE John __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Foam Protectors
Not likely ... I'll probably fill my baggage quota with wine, hi! But, Eric transports his K3s the same way and will have them in the Elecraft booth where you can have a look-see. Ed --- Ed Muns Muns Vineyard - www.munsvineyard.com FaceBook - www.facebook.com/munsvineyard -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Julius Fazekas n2wn Sent: Thursday, 21 January, 2010 07:03 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 Foam Protectors Hi Ed, Are you hauling yours to Dayton? I'd like to eyeball it then. 73, Julius - Julius Fazekas N2WN Tennessee Contest Group http://www.k4ro.net/tcg/index.html Tennessee QSO Party http://www.tnqp.org/ Elecraft K2/100 #4455 Elecraft K3/100 #366 Elecraft K3#1875 -- View this message in context: http://n2.nabble.com/K3-Foam-Protectors-tp4432365p4434092.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 Foam Protectors
Julius, These protectors are absolutely worth it and are a perfect compliment to Rose's cases. I saw Eric's at SeaPac last year and new immediately that I wanted them. - 73, Greg - AB7R Whidbey Island WA NA-065 On Thu Jan 21 7:14 , Ed Muns sent: Not likely ... I'll probably fill my baggage quota with wine, hi! But, Eric transports his K3s the same way and will have them in the Elecraft booth where you can have a look-see. Ed --- Ed Muns Muns Vineyard - www.munsvineyard.com FaceBook - www.facebook.com/munsvineyard -Original Message- From: elecraft-boun...@mailman.qth.net [elecraft-boun...@mailman.qth.net','','','')elecraft-boun...@mailman.qth.net] On Behalf Of Julius Fazekas n2wn Sent: Thursday, 21 January, 2010 07:03 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 Foam Protectors Hi Ed, Are you hauling yours to Dayton? I'd like to eyeball it then. 73, Julius - Julius Fazekas N2WN Tennessee Contest Group http://www.k4ro.net/tcg/index.html Tennessee QSO Party http://www.tnqp.org/ Elecraft K2/100 #4455 Elecraft K3/100 #366 Elecraft K3#1875 -- View this message in context: http://n2.nabble.com/K3-Foam-Protectors-tp4432365p4434092.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: Elecraft@mailman.qth.net','','','')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: Elecraft@mailman.qth.net','','','')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 Foam Protectors [UPDATE]
Last summer I described the front/rear panel foam protectors that I have designed for the K3. SNIP Two important clarifications: 1. Case sizing - these foam protectors add about 1.5 in the front-to-back dimension of the K3. Therefore, any case that is sized to accommodate just the K3 itself may not allow the foam protectors to be added. If you already have a case don't assume you can add the foam and still get the assembly inserted easily. For example, I had a pair of Rose Kopp cases made at the introduction of the K3. They are GREAT! But, after using them to take my K3s as flight carry-ons, the notion of these foam protectors was inspired. I was barely able to cram the K3s and foam into the original cases, so I sent Rose a set of the protectors and purchased a second set of bags that allow the assembly to easily slip in and out with a still have a perfect fit. Those of you who already have Rose Kopp, or other, cases may not be able to add these foam protectors. Send any complaints to ME, not Rose, because she is not clairvoyant, hi! She does make wonderful accessories for the Elecraft products, even pink (apologies, Eric!). 2. PayPal - Yes, PayPal is fine (even preferred) IF you can figure out how to get me the full amount. My w...@msn.com PayPal account is Personal so it is possible to get fee-less funds to me. You either need to pay the PayPal fees on your end, or send me extra to cover the fees, or configure the transaction to be fee-less. One way that often works is to gift me the money. Typically, sending as Goods, or Services, will result in fees. Also, you must use funds already in your PayPal account or use bank funds ... NOT credit card funds. I can also run credit cards through my business. Ed --- Ed Muns Muns Vineyard - www.munsvineyard.com FaceBook - www.facebook.com/munsvineyard __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 #3857 Up and Running-- CW clicks??
Although I love my K2, which I am keeping, I now have a K3 on the air today. Fantastic rig. I may even get a chance to operate once I configure this amazing radio. I am trying the new K3 EZ software for following what I am doing in setting up the radio. I see from the reflector that there have been instances of clicks when sending CW. I am experiencing the same problem, and don't see a resolution to the problem on the relector. I have tried my straight key and paddle, and get clicks when sending CW. I send at 15 WPM. Has anyone found a good answer to this problem. I hear the clicks in my headset and in the speaker. RF feedback? Thanks, and again this is one dream radio to configure and I look forward to actually operating it soon. P.S. Radio was factory assembled and arrived yesterday. -- View this message in context: http://n2.nabble.com/K3-3857-Up-and-Running-CW-clicks-tp4434843p4434843.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] K3BSR New Features...
Here is some help for sight impaired or old eyes like mine... ;-) http://www.zerobeat.net/wb8yqj/bsrdisp.jpg http://tinyurl.com/yayw3b4 http://www.zerobeat.net/mediawiki/index.php/K3_BSR-SM_Version_7 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Was Grounding negative side of power supply? - CORRECTING A SERIOUS ERROR
NO, NO, NO! Joe, who rarely ever gets it wrong, has led us down a VERY wrong path, and you, who also rarely get it wrong, have followed him. :) It is the NEUTRAL that must be bonded to EARTH and SYSTEM GROUND at the main panel/service entrance, and ONLY at that panel. An additional NEUTRAL connection to ground (or the green wire) is what causes an unsafe condition. Multiple paths to earth for the chassis of equipment are a GOOD thing, as long as they are all bonded together. in fact, safety codes and good engineering practice all say that you can have as many connections to EARTH as you want, that more connections are better, AND that all of these earth connections MUST be bonded together by a low impedance path. On Wed, 20 Jan 2010 22:46:54 -0500, Don Wilhelm wrote: Joe and all, I would also like to point out that the situation Joe presents can be the source of sneak ground path currents which can contribute to noise at your station. I suggest study of my power point on Ham Interfacing to understand what you are calling sneak ground path currents -- indeed, they are nothing more than leakage currents from the hot side of the AC power line through capactance to the chassis of equipment. This capacitance includes bypass capacitors (including those in line filters) and the stray capacitance between the power transformer primary and its frame, which is bonded to the chassis. http://audiosystemsgroup.com/HamInterfacing.pdf For more on power and grounding, see http://audiosystemsgroup.com/SurgeXPowerGround.pdf By all means, connect any ham related ground rods to the AC mains entry point ground rod. I don't care how you accomplish that - just do it. If it reduces noise in your receiver, that is a benefit, but if not, be assured that your shack will be a more safe place to inhabit. YES! 73, Don W3FPR Joe Subich, W4TV wrote: This creates a situation that is potentially hazardous to your equipment. The AC third (green) wire is supposed to be connected to ground only at the main panel/service entrance. WRONG. See above. 73, Jim Brown K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Grounding negative side of power supply?
On Wed, 20 Jan 2010 23:47:51 -0500, Richard S. Lindzen wrote: I am planning to put up a K9AY receiving antenna in my backyard and it is supposed to be connected to a ground rod. That ground rod is isolated by a ferrite core stepdown transformer from the shack, so it is NOT a part of your house ground. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] F.S. KAT100 built.
I have a KAT100 which is excess to my needs now. $200.00 shipped US only, paypal please. Contact me off line @ ekac...@yahoo.com Thank you, Ed N7EDK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Was Grounding negative side of power supply? -CORRECTING A SERIOUS ERROR
Jim, While the Neutral (the white wire in the US three wire power cable) must be bonded to ground at the service entrance and nowhere else, by code the Neutral must ** NOT ** be bonded to the case/chassis of any equipment (e.g., white should never be connected to the case) so the neutral is not at issue here. However, the SAFETY ground (green wire/round pin) is also bonded to ground at the service entrance - and in most residential installations ONLY at that point. It is this situation, where the safety ground (chassis) and the shield of the coaxial cables (also connected to chassis) are at different potentials that is potentially unsafe. First, the safety ground conductor in most residential wiring is no larger than #10. In a lightning strike, currents WILL flow on the safety ground. Those currents can make the chassis/cabinet of anything connected to the power lines HOT and can be dangerous. The ONLY way to prevent this issue is BOND the coaxial entry window, cable TV entry, satellite TV entry, telephone entry, and power entry ... in addition, any other conductor (water lines, gas lines, power to outbuildings or landscape lighting, etc.) that enter the home should be bonded to the common point. Where those items do not enter the building at the same place it may be necessary to install a ground ring (heavy wire with multiple ground rods) around the entire structure and tie each conductor to that ground ring. Again, the key is to insure that the individual grounds rise and fall together and can not become separated and therefore pose a danger to either persons or equipment. 73, ... Joe, W4TV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Brown Sent: Thursday, January 21, 2010 12:42 PM To: Elecraft List Subject: [Elecraft] Was Grounding negative side of power supply? -CORRECTING A SERIOUS ERROR NO, NO, NO! Joe, who rarely ever gets it wrong, has led us down a VERY wrong path, and you, who also rarely get it wrong, have followed him. :) It is the NEUTRAL that must be bonded to EARTH and SYSTEM GROUND at the main panel/service entrance, and ONLY at that panel. An additional NEUTRAL connection to ground (or the green wire) is what causes an unsafe condition. Multiple paths to earth for the chassis of equipment are a GOOD thing, as long as they are all bonded together. in fact, safety codes and good engineering practice all say that you can have as many connections to EARTH as you want, that more connections are better, AND that all of these earth connections MUST be bonded together by a low impedance path. On Wed, 20 Jan 2010 22:46:54 -0500, Don Wilhelm wrote: Joe and all, I would also like to point out that the situation Joe presents can be the source of sneak ground path currents which can contribute to noise at your station. I suggest study of my power point on Ham Interfacing to understand what you are calling sneak ground path currents -- indeed, they are nothing more than leakage currents from the hot side of the AC power line through capactance to the chassis of equipment. This capacitance includes bypass capacitors (including those in line filters) and the stray capacitance between the power transformer primary and its frame, which is bonded to the chassis. http://audiosystemsgroup.com/HamInterfacing.pdf For more on power and grounding, see http://audiosystemsgroup.com/SurgeXPowerGround.pdf By all means, connect any ham related ground rods to the AC mains entry point ground rod. I don't care how you accomplish that - just do it. If it reduces noise in your receiver, that is a benefit, but if not, be assured that your shack will be a more safe place to inhabit. YES! 73, Don W3FPR Joe Subich, W4TV wrote: This creates a situation that is potentially hazardous to your equipment. The AC third (green) wire is supposed to be connected to ground only at the main panel/service entrance. WRONG. See above. 73, Jim Brown K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] New W2 Firmware rev 0.95 and W2 Interface rev 1.1.1.20 available
We are announcing the release of W2 Firmware rev 0.95, and the companion W2 Interface programs for PC and MAC, rev 1.1.1.20. The W2 firmware will be the new version your W2 Utility program downloads from our ftp site (automatically, if you have the Copy new files from Elecraft into local folder box checked). Here's what's new for rev 0.95... *Rev 0.95, 21-Jan-2010* * ADDITIONAL CALIBRATION COMMANDS:* *You may now use the and characters when calibrating your W2 Sensor. The character increases the calibration value by 5, and the reduces the calibration value by 5. * ALARM CONDITION RESET VIA SOFTWARE:* *The High SWR Alarm condition (W2 stops with flashing SWR LED's) may be reset via software. Send the W2 either a C or c to clear the alarm. Software can also be used to detect an Alarm condition by sending the W2 an I/i. If it is in the Alarm state, the response will only be the character A!. * * * AUTO RANGE MODE IMPROVEMENTS:* *This version includes the most significant improvements yet to stabilize the Auto Range mode. * SO2R OPERATION WITH TWO SENSORS: If you are using two sensors connected to one W2 in an SO2R arrangement, the W2 can now monitor them both and lock on the one detecting RF. To use this feature send the W2 either a y or Y. The W2 indicates it is in SO2R mode by lighting only the two S1/S2 LED's while no RF is detected. While one Sensor is active, you can change the range and decay speeds as desired. The W2 reverts to normal operation if any button is pressed or it receives another Y or y serial command. * 2KW HF SENSOR SERIAL DATA: The decimal point function for Reflected Power was incorrect when the measured Forward Power was above 20 watts (value sent was too high). Now corrected.** And here's what's new for the W2 Interface program from David, W4SMT... *Version 1.1.1.20* * This version requires W2 Firmware Rev 0.95 or higher. * W2 in the Alarm state now opens a message box window that explains the alarm and displays the last SWR reading. Clicking the 'Clear' button resets the alarm on the W2 (sends C). Detects the SENSOR button being pressed on the W2. Also detects alarm state on startup * Added 'Peak-Hold Textual Readouts' checkbox in SETUP. The user can now turn off the text display peak holds if desired. It defaults to on. The state is saved upon exiting the program. * Made the peak-hold ticks wider for better visibility. As always, if you have any trouble, please send any questions to k3supp...@elecraft.com. 73, Brian, W6FVI W2 Firmware Engineer Elecraft, Inc. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Was Grounding negative side of power supply? - CORRECTING A SERIOUS ERROR
Jim, Yes, Yes, Yes!, I think you read it wrong. While multiple ground rods and multiple ground path are ok, National Electric Code requires them to be connected to the Utility Entry-point Ground. I have posted on this subject many, many times - any additional ground rods must connect to the entry ground rod (or point) for safety under fault conditions. I have 20 or 30 ground rods spread about for lightning protection - all connected together by #4 or #6 wire and also connected to the utility entry ground rod. Yes, the neutral wire is only to be connected to the safety ground inside the entry panel (sub-panels and wired electrical devices must isolate the two) - but we were talking about grounds, not the neutral. One additional note about ground rods at the service entry - I was surprised to learn (while building a rental house this year) that now 2 ground rods are required at the entry, separated by at least 6 feet, and connected together with a #6 or larger wire. 73, Don W3FPR Jim Brown wrote: NO, NO, NO! Joe, who rarely ever gets it wrong, has led us down a VERY wrong path, and you, who also rarely get it wrong, have followed him. :) It is the NEUTRAL that must be bonded to EARTH and SYSTEM GROUND at the main panel/service entrance, and ONLY at that panel. An additional NEUTRAL connection to ground (or the green wire) is what causes an unsafe condition. Multiple paths to earth for the chassis of equipment are a GOOD thing, as long as they are all bonded together. in fact, safety codes and good engineering practice all say that you can have as many connections to EARTH as you want, that more connections are better, AND that all of these earth connections MUST be bonded together by a low impedance path. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Grounding negative side of power supply?
That ground rod is isolated by a ferrite core stepdown transformer from the shack, so it is NOT a part of your house ground. IF you use the transformer version of the schematic and not the original auto-transformer design. 73, ... Joe, W4TV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Brown Sent: Thursday, January 21, 2010 12:46 PM To: Elecraft List Subject: Re: [Elecraft] Grounding negative side of power supply? On Wed, 20 Jan 2010 23:47:51 -0500, Richard S. Lindzen wrote: I am planning to put up a K9AY receiving antenna in my backyard and it is supposed to be connected to a ground rod. That ground rod is isolated by a ferrite core stepdown transformer from the shack, so it is NOT a part of your house ground. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Grounding negative side of power supply?
Understanding how dangerous voltages can develop on a GROUND wire can sometimes be helped by understanding lightning as a very extreme surge, a standing wave in electrons looking for some place to go to dissipate. The force behind the surge is is the lightning of course, and the ground conduction as this surge spreads out is EXTREMELY lumpy, miscellaneous, whatever you want to call it. If lightning hit a tree in your back yard, this pulse is trying to move away from it, taking what ever path it may to get away. One of the paths of conduction for the surge might be from the ground up into a ground rod to a conductor at your feedline entrance, to a grounding plate, to the shield of every one of your coax feeds, to the chassis of all your rigs. At this instance your rig cases are high against everything else as the surge takes off down the safety ground wire to the power ground. Connecting the coax entry ground to the power ground with a straight large conductor run gives the surge another EASIER way to go. Avoiding the need for this low impedance shunt path is why a single point ground works. One thing that often gets missed is that a house with its foundation system or basement can be a conduction barrier in the path of the surge's dissipation pulse. If there is a miscellaneous conduction path through/under the house, you want it to be a good one where detours up to sensitive equipment is out of the way and unattractive to the surge. 73, Guy. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 #3857 Up and Running-- CW clicks??
Thank you for the replies. I have discovered the difference between semi break-in delay, which is controlled by the delay knob on the radio, and the TX DLY feature in the configuration menu. I use semi break-in and have now reset that higher using the knob on the radio vice the menu feature.. I raised mine to 0.08 and the clicks disappeared. I hope this may be helpful to others. The default setting for this front panel delay knob was 0.01, which resulted in lots of clicking. 73. -- View this message in context: http://n2.nabble.com/K3-3857-Up-and-Running-CW-clicks-tp4434843p4436326.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 DXpedition carry cases
BlankAbout a year ago I made two K3 cases for Ed Muns, W0YK that were a bit wider to accomodate closed-cell foam end caps that he had made for added protection for his K3's on overseas trips. After seeing Ed's cases with his end caps offering additional protection to the front and rear panels of the K3, Elecraft ordered several of these cases that they now use to transport their demo K3's to hamfests. There has been recent conversation about Ed's end caps and my cases on several reflectors and I've already received inquiries asking if I would offer these enhanced cases as a regular product. Simply put, yes. Ed has already made his end caps available to several who apparently pack their K3 in luggage or other packaging, and Ed will furnish me with a stock of the caps for me to supply with DXpedition case orders. This is a mutually agreed-to arrangement and it saves Ed the trouble of selling and shipping a set of caps to those who purchase a case from me. The DXpedition case is four inches wider than my standard case, but is otherwise essentially the same. The additional case cost will be $38, which -includes- a set of Ed's end caps. If you want to carry two K3's together as one bag we've devised a way to do so. The changes needed to fasten two cases together back-to-back are minimal. If you want photos of the end caps and their use with the case, I can e-mail them to you. I'm sorry, but if you already have one of my standard cases it would be impossible to convert it to the larger DXpedition case. If you want a DXpedition case, maybe you can sell your standard case to another K3 owner. I -have- replaced a couple of front panels (w/embroidery) of cases when they've been gone to new homes. (:-)) 73! Rose elecraftcov...@rfwave,net Ken Kopp - K0PP elecraftcov...@rfwave.net or k...@arrl.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Grounding negative side of power supply?
Guy, That is the reason I put a perimeter wire around my house with a ground stake every place the wire makes an abrupt turn. That wire provides any lightning surge with a lower impedance path than that which it might find by blowing a hole through the foundation wall. In my opinion, definitive information on lightning protection and station grounding was written by Ron Block, and can be found on the PolyPhaser website - it was also published in a 2 part series in QST some years back - it should be available to ARRL members on the ARRL website. Those articles convinced me that the perimeter wire was the best thing I could do. 73, Don W3FPR Guy Olinger K2AV wrote: One thing that often gets missed is that a house with its foundation system or basement can be a conduction barrier in the path of the surge's dissipation pulse. If there is a miscellaneous conduction path through/under the house, you want it to be a good one where detours up to sensitive equipment is out of the way and unattractive to the surge. 73, Guy. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Delay in monitor audio - it aint there!
To those of you who were complaining about the delay in the K3 audio monitor chain, I am curious what you are hearing. After reading the thread, and playing around with the radio for a few days critically listening for this issue, I dont hear a problem. Maybe its a matter of your listening through a sound card or some other external device. Or maybe you have external digital processing after your microphone. However, with a microphone plugged in directly (OK, through a microHAM MicroKeyerII then into the K3) and my headphones plugged in to the front panel headphone jack, I do not hear any discernable delay in the audio feed when listening to myself in the audio monitor of the rig. And before I get flamed for not knowing what to listen for, Im learned in audio delay issues... As a broadcaster, I understand audio delay and can see lip sync problems down to around 2 video frames (just ask ABC and Fox TV Network Control centers, they probably curse me even today). Newspeople have complemented me on my attention to their audio delay problems in their IFB and ProChannel feeds for years (rare for them, because usually they only talk to engineers when things are broken or they want a free tape for their resume reel). Lu Romero - W4LT K3 #3192 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 DXpedition carry cases
Rose Re the expedition case, what are the stock colors on offer!!! Ken..G0ORH Sent from my iPhone On 21 Jan 2010, at 21:18, Ken Kopp k...@rfwave.net wrote: BlankAbout a year ago I made two K3 cases for Ed Muns, W0YK that were a bit wider to accomodate closed-cell foam end caps that he had made for added protection for his K3's on overseas trips. After seeing Ed's cases with his end caps offering additional protection to the front and rear panels of the K3, Elecraft ordered several of these cases that they now use to transport their demo K3's to hamfests. There has been recent conversation about Ed's end caps and my cases on several reflectors and I've already received inquiries asking if I would offer these enhanced cases as a regular product. Simply put, yes. Ed has already made his end caps available to several who apparently pack their K3 in luggage or other packaging, and Ed will furnish me with a stock of the caps for me to supply with DXpedition case orders. This is a mutually agreed-to arrangement and it saves Ed the trouble of selling and shipping a set of caps to those who purchase a case from me. The DXpedition case is four inches wider than my standard case, but is otherwise essentially the same. The additional case cost will be $38, which -includes- a set of Ed's end caps. If you want to carry two K3's together as one bag we've devised a way to do so. The changes needed to fasten two cases together back-to-back are minimal. If you want photos of the end caps and their use with the case, I can e-mail them to you. I'm sorry, but if you already have one of my standard cases it would be impossible to convert it to the larger DXpedition case. If you want a DXpedition case, maybe you can sell your standard case to another K3 owner. I -have- replaced a couple of front panels (w/embroidery) of cases when they've been gone to new homes. (:-)) 73! Rose elecraftcov...@rfwave,net Ken Kopp - K0PP elecraftcov...@rfwave.net or k...@arrl.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Grounding negative side of power supply?
Glen Zook K9STH also has good readings on grounding on his web page. They appear to be of good authority. Do a search for K9STH and it should appear. Larry W0OGH -- Original message from Don Wilhelm w3...@embarqmail.com: -- Guy, That is the reason I put a perimeter wire around my house with a ground stake every place the wire makes an abrupt turn. That wire provides any lightning surge with a lower impedance path than that which it might find by blowing a hole through the foundation wall. In my opinion, definitive information on lightning protection and station grounding was written by Ron Block, and can be found on the PolyPhaser website - it was also published in a 2 part series in QST some years back - it should be available to ARRL members on the ARRL website. Those articles convinced me that the perimeter wire was the best thing I could do. 73, Don W3FPR Guy Olinger K2AV wrote: One thing that often gets missed is that a house with its foundation system or basement can be a conduction barrier in the path of the surge's dissipation pulse. If there is a miscellaneous conduction path through/under the house, you want it to be a good one where detours up to sensitive equipment is out of the way and unattractive to the surge. 73, Guy. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 DXpedition carry cases
Hi Rose, I've already ordered the end caps from Ed. What would be the price just for two cases with the velcro to attach them together? Thanks, Al N1AL On Thu, 2010-01-21 at 21:18 +, Ken Kopp wrote: ... Ed has already made his end caps available to several who apparently pack their K3 in luggage or other packaging, and Ed will furnish me with a stock of the caps for me to supply with DXpedition case orders. This is a mutually agreed-to arrangement and it saves Ed the trouble of selling and shipping a set of caps to those who purchase a case from me. The DXpedition case is four inches wider than my standard case, but is otherwise essentially the same. The additional case cost will be $38, which -includes- a set of Ed's end caps. If you want to carry two K3's together as one bag we've devised a way to do so. The changes needed to fasten two cases together back-to-back are minimal. ... __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Was Grounding negative side of power supply? - CORRECTING A SERIOUS ERROR
A picture paints a thousand words. Point to a web page with all this drawn and save all this bandwidth. Someone might be then able to compare one system with another. David G3UNA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Delay in monitor audio - it aint there!
Here's an interesting piece on K3 transmit audio processing: http://www.cliftonlaboratories.com/elecraft_k3_speech_processing.htm where it is reported that There's 31 milliseconds of processing delay in the K3's DSP stages between microphone input and monitor output... using the setup described in the article. The date is 15 March 2009. Bob NW8L On Thu, Jan 21, 2010 at 2:53 PM, Lu Romero lrom...@ij.net wrote: To those of you who were complaining about the delay in the K3 audio monitor chain, I am curious what you are hearing. After reading the thread, and playing around with the radio for a few days critically listening for this issue, I dont hear a problem. Maybe its a matter of your listening through a sound card or some other external device. Or maybe you have external digital processing after your microphone. However, with a microphone plugged in directly (OK, through a microHAM MicroKeyerII then into the K3) and my headphones plugged in to the front panel headphone jack, I do not hear any discernable delay in the audio feed when listening to myself in the audio monitor of the rig. And before I get flamed for not knowing what to listen for, Im learned in audio delay issues... As a broadcaster, I understand audio delay and can see lip sync problems down to around 2 video frames (just ask ABC and Fox TV Network Control centers, they probably curse me even today). Newspeople have complemented me on my attention to their audio delay problems in their IFB and ProChannel feeds for years (rare for them, because usually they only talk to engineers when things are broken or they want a free tape for their resume reel). Lu Romero - W4LT K3 #3192 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Lightning Protection articles
OK, this thread has morphed into lightning protection related topics, and I have changed the subject line. I checked the PolyPhaser site and the information is no longer there. ARRL Archives has the best one I know about. It was a 3 part publication run in June, July and August of 2002. Author is W. Ronald Block, KB2UYT and carries the title of Lightning Protection for the Amateur Radio Station. Download the 3 .PDF files - they have pictures and diagrams. That is the guidelines I used to constructed my system. I consider this an authoritative source, and I have not seen one since that covered all aspects. I looked at the K9STH articles and while informative, they lacked completeness. 73, Don W3FPR David Cutter wrote: A picture paints a thousand words. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Delay in monitor audio - it aint there!
The conclusion, only found at the very bottom of the article: Conclusion: RF clipping, as implemented in the K3, is quite effective at increasing talk power without causing major increases in transmitted intermodulation. The resulting audio quality at high levels of clipping may not be suitable for extended rag chew conversations, but will provide useful improvements in contests or other situations where maximum dynamic range of the recovered audio is not the primary consideration. Although 31 ms of delay was reported, that wasn't what the article was written about. 73, Guy. On Thu, Jan 21, 2010 at 6:38 PM, Bob Cunnings bob.cunni...@gmail.com wrote: Here's an interesting piece on K3 transmit audio processing: http://www.cliftonlaboratories.com/elecraft_k3_speech_processing.htm where it is reported that There's 31 milliseconds of processing delay in the K3's DSP stages between microphone input and monitor output... using the setup described in the article. The date is 15 March 2009. Bob NW8L __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] FS: KPA100 + KAT100 ** NICE KIT ** SOLD
SOLD 73 J-F VA2SS -- View this message in context: http://n2.nabble.com/FS-KPA100-KAT100-NICE-KIT-tp4433718p4437480.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] K3 DXpedition carry cases
Add $20. to the list price of the standard case. And I've asked for a bright color, in order to easily keep track it. I was thinking international orange, but in retrospect, think that might cause trouble with people thinking it's emergency gear (like when taking it out of the overhead compartment). Maybe lime green. Ken and Rose are checking to see what they can get. 73, doug From: Alan Bloom n...@cds1.net Date: Thu, 21 Jan 2010 15:01:22 -0800 Hi Rose, I've already ordered the end caps from Ed. What would be the price just for two cases with the velcro to attach them together? Thanks, Al N1AL On Thu, 2010-01-21 at 21:18 +, Ken Kopp wrote: ... Ed has already made his end caps available to several who apparently pack their K3 in luggage or other packaging, and Ed will furnish me with a stock of the caps for me to supply with DXpedition case orders. This is a mutually agreed-to arrangement and it saves Ed the trouble of selling and shipping a set of caps to those who purchase a case from me. The DXpedition case is four inches wider than my standard case, but is otherwise essentially the same. The additional case cost will be $38, which -includes- a set of Ed's end caps. If you want to carry two K3's together as one bag we've devised a way to do so. The changes needed to fasten two cases together back-to-back are minimal. ... __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] how much harder to build: K2 vs K1?
Ok, thanks Don and everyone. I've looked through the soldering tutorial and will try to get some practice in. I have a weller soldering station with several different 700F tips. I ordered solder, wick, some tools and an anti-stat mat from Mouser yesterday so they should arrive around the same time as my kit (Elecraft shipped it a couple days ago). I didn't order any of the mini modules along with the K2, tho. But I think I'm going to go ahead and get an XG2 and build that first. I also think I should get the noise blanker - I recently moved and just now put up a wire. On the 706 I do hear loads of pulse noise around my new area LS -- View this message in context: http://n2.nabble.com/how-much-harder-to-build-K2-vs-K1-tp4234815p4437683.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] Lightning Protection articles
I think these may be the PolyPhaser articles Don was referring to. http://www.polyphaser.com/technical_notes.aspx 73 -- Joe KB8AP On Jan 21, 2010, at 3:56 PM, Don Wilhelm wrote: OK, this thread has morphed into lightning protection related topics, and I have changed the subject line. I checked the PolyPhaser site and the information is no longer there. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] W2 assembly
I'm not sure whether you need to remove paint on the inside or the outside of the panel surface to assemble the W2. If it's an inside job where looks don't really matter, if you have access to a really large drill bit (say 1/2 or better) you can simply center it in the hole and twirl it a couple of times. This will remove the paint, and a bit of metal, around the periphery of the hole. This technique also works well as a quick and dirty deburring tool for holes drilled in sheet metal. 73... Randy, W8FN __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 interface to HP Mini
Has anyone been successful with an audio interface between an HP Mini notebook and a K3? I have a TRRS splitter, but the microphone input side of it does work. Yes, the audio drivers are up to date. Yes, the Jack Mike is turned on. The real question is whether or not I'm using the correct plug for the splitter. It looks like the one that HP recommends and is common to an iPhone. If that's not correct where does one purchase the correct plug. 73 de Tom (K7ZZ) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] W2 Assembly
This isn't a difficult task. Just use a small file and scrape the paint off around the holes. It took me all of 45 minutes from opening the packing box to having the W2 in line. No need to overthink the building process! 73, Ed - K6CTA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] W2 assembly
On Thu, 21 Jan 2010 09:53:13 -0500, Jim Spears n...@cox.net wrote: I am assembling a W2 wattmeter. So far so good. Removing the baked on paint for electrical conductivity at the holes is turning out to be a real pain. Does anyone have a tip for an efficient method for doing this? So far the best I have found is scratching with the tip of a knife. Perhaps Elecraft could have this area masked off during the paint process. Jim/N1NK K3 2295 If you have a dremmal with a wire brush they work great. Tom, N5GE n...@n5ge.com K3 #806 with SUB RX, K3 #1055, PR6, XV144, XV432, KRC2, W1, 2 W2's and other small kits 1 K144XV on order http://www.n5ge.com http://www.swotrc.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Elecraft Digest, Vol 69, Issue 40
Folks, It is best not to rely on water pipes for any type of grounding. Many homes have various combinations of steel, copper, plastic, etc. piping. These are electrically discontinuous, often with purposefully inserted galvanic isolators. The best ground is a proven, direct ground. Bonding of all electrical grounds to the common feed-point ground is required. You risk too much with the chance of holding a mike and touching another piece of non-ham equipment. tom -- w6tjk From: David Christ radio...@mchsi.com Subject: Re: [Elecraft] Grounding negative side of power supply? To: elecraft@mailman.qth.net Cc: elecraft@mailman.qth.net Message-ID: p0624080fc77e08e1b...@[10.0.1.3] Content-Type: text/plain; charset=us-ascii ; format=flowed Another commonly used ground is the water system. Check your water meter. If there is a heavy jumper around it, chances are the grounding wire from the service entrance connects to the cold water system. David K0LUM At 7:17 AM -0500 1/21/10, Jim Miller wrote: In many US homes the utility ground is found inside the home as it is a ground rod embedded in the poured concrete foundation immediately below the power panel. 73 jim ab3cv thanks and 73's Tom Kenville -- W6TJK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] W2 assembly
On Thu, 21 Jan 2010 20:46:53 -0600, Randy Farmer w...@tx.rr.com wrote: When you remove the paint from around a hole the way you described you will remove paint below the mating surfaces of the panels, not from the mating surfaces that need to be bonded together. You must remove the paint from the surface surrounding the holes to get an effective bond. Half inch drill bits are used a lot for deburring, but if you get caught doing that in a factory that builds aircraft parts, you will get a reprimand because you may nick the edges of the hole and stand a chance of causing a crack that will extend from the hole into the sheet metal and perhaps eventually causing a structural failure. Sand paper or a wire brush is a better way to remove paint from surfaces that need to be bonded together. 73, Tom, N5GE n...@n5ge.com K3 #806 with SUB RX, K3 #1055, PR6, XV144, XV432, KRC2, W1, 2 W2's and other small kits 1 K144XV on order http://www.n5ge.com http://www.swotrc.net I'm not sure whether you need to remove paint on the inside or the outside of the panel surface to assemble the W2. If it's an inside job where looks don't really matter, if you have access to a really large drill bit (say 1/2 or better) you can simply center it in the hole and twirl it a couple of times. This will remove the paint, and a bit of metal, around the periphery of the hole. This technique also works well as a quick and dirty deburring tool for holes drilled in sheet metal. 73... Randy, W8FN [snip] __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Lightning Protection articles
Hi Don, The KB2UYT articles from 2002 mentions a perimeter ring, but gives no real details as to the construction and installation of the ring. An article by KD7PEI in the 8/2008 QST gives more details, but still fails to answer some questions such as: How far away from the building foundation can the ring be? Obviously closer means less material needed, but can it be TOO close? Can it be too far? How do you deal with concrete sidewalks, concrete driveways, stone patios, or other obstacles that prevent you from placing the ring close to the foundation? (KB2UYT does say that A perimeter ground that only goes three-quarters or half-way around the house is better than no perimeter ground at all. But would it be better to get a complete ring with parts of it 20' away from the foundation, or a partial ring 3' away?) Is there a recommended vertical separation between the ring conductor and other underground pipes and wires? If you have time and are so inclined, could you perhaps tell us more about the ring you installed, the materials you used, and how you went about the installation? 73 -- Joe KB8AP On Jan 21, 2010, at 3:56 PM, Don Wilhelm wrote: ARRL Archives has the best one I know about. It was a 3 part publication run in June, July and August of 2002. Author is W. Ronald Block, KB2UYT and carries the title of Lightning Protection for the Amateur Radio Station. Download the 3 .PDF files - they have pictures and diagrams. That is the guidelines I used to constructed my system. I consider this an authoritative source, and I have not seen one since that covered all aspects. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] pink?
pink? I don't think sew pink is not the new black to those sewing seeds of pink think, its time for end of thread. Chris VK2ACD __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
