[Elecraft] QRP: Who'd DOin All the Work Audio File
Hello QRPers! If you want a good laugh, listen to the audio on my QRP Page as it loads up. http://www.wa3wsj.com/WA3WSJ-MyQRPworld.html Happy New Year to all! 72, Ed,WA3WSJ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Polar Bear Challenge 2007 Info
Hello all, Please remember that you must send me, WA3WSJ, an PBC Entry form to enter PBC 2007. I've received many emails stating they will participate, but you need to email or send, WA3WSJ, an entry form to participate. http://www.wa3wsj.com/PBChallenge2007.html Grab an entry form and email to me at: http://www.wa3wsj.com/PBChallengeEntrySheet2007.html 1.We now have our very first European PBC 2007 Entry - OK1RP! 2.We also have one ARLHS Member entered in the PBC! Now the question is - who will take the Alpha Bear Trophy? It will be a very nice award so - do you have what it takes? Coming soon - a Yahoo Group PBC 2007 Reflector. This will get all the emails off these reflectors. Thanks for understanding guys. 72, Ed,WA3WSJ Aka Kangaroo Ed PB # 2 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] who does the work in QRP?
Dear Fellow Elecraftists, I have been adjusting/measuring many HF rigs the last 10-15yrs or so, using a calibrated Marconi generator. From what I've found on S-meter accuracy, I conclude there is no such thing as the 6 dB per S-unit. Offical tests in magazines and books verify this too. Wether it be large ones like the 1000MP's, or small rigs, all show from 1dB to max 4 dB between S-units accros the range from S1 to S9. I take it that roughly said 2.5 dB per S-unit is valid nowadays. Now to your statement; it is not going to be an S7, it will rather be an S1 or less I'm afraid. Who does the work in QRP? It always is the guy with the better antenna's :) But do not fear, QRP does work! Just listen to the NCDXF HF beacons while they switch from 100W to 10W, 1W and 100mW. If you can hear the 100W, you can almost for sure hear the 1W too. Better to compare live results on the band instead of theoratical statements. Have a healthy and prosperous 2007 ! '73 Mark, PA5MW You lose 1 S-Unit each time you're reducing power by 1/4. One S-unit consists of 6db increase or decrease in received signal strength. Transmit power must be increased FOUR TIMES to achieve a signal strength increase of one S-Unit! A QRP signal is mighty respectable at S-7 on anyone's receiver. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] QRP and getting above the noise
Dear Dr I'm sure I heard of a filter that peaked the audio passband to enhance the s, c, ch etc but cannot remember where, perhaps it was in HR. Yes, I am interested and if we can reduce that s+n/n ratio we can get more out of our QRP, particularly in noisy conditions. I'm not hopeful, though, if it has been done, I would have thought the radio amateur fraternity would have picked it up years ago. Something tells me it is a small peak around 1500Hz. David G3UNA - Original Message - From: James Duffey [EMAIL PROTECTED] To: elecraft@mailman.qth.net Cc: [EMAIL PROTECTED]; James Duffey [EMAIL PROTECTED] Sent: Wednesday, December 27, 2006 1:25 AM Subject: [Elecraft] QRP and getting above the noise SSB signals need at least 10 dB and preferably 15 dB to 20 dB to be copied. Also a number of years ago Ham Radio Magazine had details on a voice enhancing frequency compensating network developed by NASA but I don't recall the details or issue in which it appeared. I can look my Ham radios to find it if you are interested though. - Dr. Megacycle KK6MC/5 -- James Duffey KK6MC/5 Cedar Crest NM 87008 DM65 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K2 receiver hash or artifacts
Hello All, New to the list, as I just completed #5885. With the exception of a couple of wrong turns, the build went great. My radio was completed about 1 week ago, and I recently noticed that I have some hash, or artifacts on receive on specific frequency's. I.E., I don't have hash across an entire band, only on particular frequencies. Otherwise, the radio seems to be operating as expected. Eg. on 20 meters, the hash starts at about 14190, gets loudest at about 14200, and goes away at about 14212. I have other similar problems on other bands, but 20 seems to have the loudest occurrence of the problem, over the widest frequency span. (Although other bands have some noise, it doesn't span 20KHZ like it does in the aforementioned 20 meter example). Any help with where I might start looking for the source of this problem would be greatly appreciated! Thanks es 73 de Don W0DJC K2 #5885 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] who does the work in QRP?
Ron, wb1hga, wrote: I will still prefer my K1. I can't argue with your preferences. The K1 is a fine rig, I'm sure. I have a Wilderness Sierra (Wayne Burdick's predecessor to the K1), and I enjoy making QSO's with it. However, when I hear a KW contest station on 80 meters working from a country or zone that I need, I call with my big rig and amp. To use the Sierra under these conditions would be a foolish waste of time. I like having the option of varying my power from about 3 dB below 5 watts to about 21 dB above 5 watts. 73, Chuck NI0C ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] who does the work in QRP?
This has certainly been an interesting discussion. Usually this question comes up in asymmetrical situations-- where the op at one end is running QRP power levels and/or using a marginal antenna, and the person on the other end is running power that may be orders of magnitude higher than QRP and a good antenna. When I worked JM7OLW earier this year on 40m with my KX1 and HF-2V, he was running a KW to a 3 elemnt beam. I sent him an e-mail congratulating him for his accomplishment. I had no trouble copying him, but he sure strained to pull me out of the noise. The way I see it, he did the lion's share of the work! 73, Chuck NI0C ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] The spirit is willing, but the mind is weak
Someone posted a message/url about an antenna they fabricated using a coil that was wound on pvc? I've lost the link and the email that the person sent to me about the antenna and could use a shove in the right direction. My brother finally got an HF rig and was wondering what he could use in an awkward location...and no sooner than I blurted out...Hey, someone on the list posting something you could use, I bit my tongue, cause I couldn't finf the information. Perhaps this short term memory loss is proof that we need to teach people CW when they are young (g). 73,Thom-k3hrn www.zerobeat.net Home of QRP Web Ring, Drakelist home page,Drake Web Ring, QRP IRC channel, Drake IRC Channel, Elecraft Owners Database www.tlchost.net/hosting/ *** Web Hosting as low as 3.49/month ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] who does the work in QRP?
I don't pat myself on the back or feel that I have achieved something if I manage to make a DX contact. I'm just plain thrilled. Anyone can run the full legal limit to a tower mounted beam if they have deep enough pockets and think it's important enough to spend that kind of money. But do they get the same thrill when their signal is heard the other side of the world as the guy running the barefoot K2 or K1 into a bit of wire? The wonder is that enough power to dimly light a torch bulb is sufficient to allow communication with someone thousands of miles away. If I wanted reliable communication with someone in Australia I'd pick up the phone, or send an email. The more power you use, the more money you spend, the less magic is left and the less fun it is, in my opinion. Julian, G4ILO G4ILO's Shack: www.g4ilo.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] who does the work in QRP?
All these numbers are fun but do not mean much. What you do if you run QRP is learn about propagation. If you have the prop, you work about as well as a 100 watt station. If you don't, go do something else. Yes if you run 1500 watts to a good antenna you will get the DX first. At 5 watts it takes a day or so. I do the Fox Hunts where we are all 5 watts and run 20 WPM CW. We do try hard to work each other and it does work well. I got both Fox last night, one in CO and the other in TX. I live in NM and we were on 80 Meters. Fun. 72 Karl [EMAIL PROTECTED] wrote: In a message dated 12/26/06 6:27:25 PM Eastern Standard Time, [EMAIL PROTECTED] writes: Transmit power 500 watts S-9 +10 db 50 watts S-9 (+ 10 db over 9) 12.5watts S-8 3.1 watts S-7 You lose 1 S-Unit each time you're reducing power by 1/4. Yup - *if* the receiver is really 6 dB per S unit. Now look at these numbers: Transmit power 1280 watts S-6 320 watts S-5 80 watts S-4 20 watts S-3 5 watts S-2 If the receiving station can't dig out your S-2 signal, no QSO. One S-unit consists of 6db increase or decrease in received signal strength. Transmit power must be increased FOUR TIMES to achieve a signal strength increase of one S-Unit! A QRP signal is mighty respectable at S-7 on anyone's receiver. *if* the path is such that you are S-7. 73 de Jim, N2EY ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K2 Headphone Socket
Reading the archives for late November it looks as though I may have a faulty headphone socket, and that this is now fairly common. On unplugging headphones the internal speaker does not operate, nor does external speaker. I have disconnected the KP100 unit and connected up the original lid and speaker. That has the same results. K2/100 5545 bought at Dayton this year, completed in September. Very carefully soldered and I am certain the socket was not over-heated on assembly. I have only just using the K2/100 for serious work. Chris G3SJJ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] K2 receiver hash or artifacts
Don, I would believe that hash is coming from devices used around the house (or your neighbor's). Ethernet modems and routers, computers, switching power supplies, wall-wart power supplies, touch lamps, lamp dimmers. Anything that uses switching technology can produce such hash over a small frequency range and the range may shift with its load. You can verify that by killing all the power im your house and running the K2 on a 12 volt battery for the test. I hear hash of that nature on the simple antenna that I use at the workbench, but do not hear it when I use the 'proper' antennas in the shack - these antennas are located about 100 feet from the house so they do not pick up the noise sources. It also helps that I have a stucco house where the stucco wire mesh acts as a shield to keep the noise inside - but I don't dare consider inside antennas either, they too would be shielded. 73, Don W3FPR -Original Message- New to the list, as I just completed #5885. With the exception of a couple of wrong turns, the build went great. My radio was completed about 1 week ago, and I recently noticed that I have some hash, or artifacts on receive on specific frequency's. I.E., I don't have hash across an entire band, only on particular frequencies. Otherwise, the radio seems to be operating as expected. Eg. on 20 meters, the hash starts at about 14190, gets loudest at about 14200, and goes away at about 14212. I have other similar problems on other bands, but 20 seems to have the loudest occurrence of the problem, over the widest frequency span. (Although other bands have some noise, it doesn't span 20KHZ like it does in the aforementioned 20 meter example). Any help with where I might start looking for the source of this problem would be greatly appreciated! Thanks es 73 de Don W0DJC K2 #5885 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.15.27/602 - Release Date: 12/25/2006 10:19 AM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] RE: QRO who works?
Hello all you Who-Does-the-Work QRPers, When ops who work a QRP station say, I'm doing all the work here. Do they realize that the QRP operator: 1.probably built his own rig 2.probably built his antenna 3.probably took the time to actually study code 4.probably is very patient 5. etc etc. I ran the CQWWCW Contest as VP5ED. As VP5ED I had over 1200 Qs in 48 hours running 5W of power with my Elecraft K2. I ran and held pileups for hours running QRP. So who was, doing all the work? Was it the 100w stations? Was it the KW stations? NO--- it was the QRP Ops trying to break my QRP pileup! Be careful- be VERY careful when you say the receiving station, is doing all the work. This QRP op built his transceiver and antennas; planned the Dxpedition; paid for the Dxpedition; modified antennas to use for the Dxpedition and hauled all his QRP gear to the Island on a plane. Went through customs and had to take my gear apart not once, but twice. Set up all my QRP gear at the site including some antennas. After doing this, some ops still say, the receiving station is doing all the work. NOT Have a Happy New Year! 72, Ed,WA3WSJ Aka Kangaroo Ed ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K2/100 output variation
I am sure I have seen a discussion about this one before. During an enjoyable 160m opening to the Right Coast just before Christmas I was running a few Stateside stations and noticed a definite output power variation coming from my Acom 1000 which was being driven by the K2. I would guess that the drive power was varying between 30 and 50 watts. Any thoughts on this? K2/100 5545 bought at Dayton this year, completed in September. Chris G3SJJ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2/100 output variation
Chris, Take a look here... http://www.elecraft.com/Apps/Power_Control_Mod.html 73 Stewart G3RXQ On Wed, 27 Dec 2006 14:07:24 +, G3SJJ wrote: I am sure I have seen a discussion about this one before. During an enjoyable 160m opening to the Right Coast just before Christmas I was running a few Stateside stations and noticed a definite output power variation coming from my Acom 1000 which was being driven by the K2. I would guess that the drive power was varying between 30 and 50 watts. Any thoughts on this? K2/100 5545 bought at Dayton this year, completed in September. Chris G3SJJ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Polar Bear Challenge 2007
Hello all, Do you have what it takes? If you think so, then check out the Polar Bear Challenge 2007. http://www.wa3wsj.com/PBChallenge2007.html 72, Ed,WA3WSJ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] RE: QRO who works?
In a message dated 12/27/06 9:03:37 AM Eastern Standard Time, [EMAIL PROTECTED] writes: Hello all you Who-Does-the-Work QRPers, When ops who work a QRP station say, I'm doing all the work here. Do they realize that the QRP operator: 1.probably built his own rig 2.probably built his antenna 3.probably took the time to actually study code 4.probably is very patient 5. etc etc. A QRO station may have done all of that, too. For example, here's a 100 W station: http://hometown.aol.com/n2ey/myhomepage/ I ran the CQWWCW Contest as VP5ED. As VP5ED I had over 1200 Qs in 48 hours running 5W of power with my Elecraft K2. I ran and held pileups for hours running QRP. So who was, doing all the work? No one station does *all* the work in a QSO. Was it the 100w stations? Was it the KW stations? NO--- it was the QRP Ops trying to break my QRP pileup! Be careful- be VERY careful when you say the receiving station, is doing all the work. This QRP op built his transceiver and antennas; planned the Dxpedition; paid for the Dxpedition; modified antennas to use for the Dxpedition and hauled all his QRP gear to the Island on a plane. Went through customs and had to take my gear apart not once, but twice. Set up all my QRP gear at the site including some antennas. With all due respect - think about *why* there was a pileup on you. There's an old saying about the 20 dB gain of a rare callsign. Doesn't mean there's no work involved on the rare one's end, but being a new multiplier makes a big difference in how the pack responds. After doing this, some ops still say, the receiving station is doing all the work. NOT Agreed. 73 de Jim, N2EY ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] 19inch Racks - somewhat OT
Good Morning Group, I just have share this. Before I retired from the Navy, I was serving with the Joint Chiefs of Staff, as one of the assistants to the communications guru, one particularily gruff vice admiral who I'm pretty sure coined the phrase lead, follow or get the hell out of the way, and liked to continually stir whatever pot he happened to be in charge of at the time. For whatever reason, he called me into his office, one day, and asked me if the 19 inch rack panel was a standard or a tradition. I had long since learned not to ask him why he was curious, I just charged off to find out. I uncovered countless references to 19 racks, and a lot of things which specified it, but failed to find out anything about its genisus. Since failure was not an option, I reported that it had something to do with the width of hatches on early submarines, but an original order - if one existed - was lost in the fog of the past. In any event, the 19 inch standard was so deeply ingrained in the military (and a good bit of civilian industry as well) that it might as well have come down as the 11th commandment. He grudently accepted my findings, but continued to press the issue, claiming that if services were going to continue to support 19 racks, there needed to be a mil spec actually in place. Thankfully I retired before being thrown into that briar patch. I have wondered, over the years, if I missed anything. Does anyone REALLY know whether or not the 19 inch is a standard or a tradition. 73, Tom, KJ3D (apparently with too-little-else-to-worry-about-today) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] 19inch Racks - somewhat OT
From Wikipedia (www.wikipedia.org) the repository of all knowledge: A 19-inch rack is a standardized (EIA 310-D, IEC 60297 and DIN 41494 SC48D) system for mounting various electronic modules in a stack, or rack, 19 inches (482.6 mm) wide. Equipment designed to be placed in a rack is typically described as rack-mount, a rack mounted system, a rack mount chassis, subrack, or occasionally, simply shelf. The slang expression for a subrack (generally 1U height) is pizza box due to the similarity in size and shape. Because of their origin as mounting systems for railroad signaling relays, they are still sometimes called relay racks, but the 19-inch rack format has remained a constant while the technology that is mounted within it has changed to completely different fields. This standard rack arrangement is widely used throughout the telecommunication, computing, and entertainment industries, as well as others. Craig NZ0R -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tom Skinner Sent: Wednesday, December 27, 2006 9:09 AM To: elecraft@mailman.qth.net Subject: [Elecraft] 19inch Racks - somewhat OT Good Morning Group, I just have share this. Before I retired from the Navy, I was serving with the Joint Chiefs of Staff, as one of the assistants to the communications guru, one particularily gruff vice admiral who I'm pretty sure coined the phrase lead, follow or get the hell out of the way, and liked to continually stir whatever pot he happened to be in charge of at the time. For whatever reason, he called me into his office, one day, and asked me if the 19 inch rack panel was a standard or a tradition. I had long since learned not to ask him why he was curious, I just charged off to find out. I uncovered countless references to 19 racks, and a lot of things which specified it, but failed to find out anything about its genisus. Since failure was not an option, I reported that it had something to do with the width of hatches on early submarines, but an original order - if one existed - was lost in the fog of the past. In any event, the 19 inch standard was so deeply ingrained in the military (and a good bit of civilian industry as well) that it might as well have come down as the 11th commandment. He grudently accepted my findings, but continued to press the issue, claiming that if services were going to continue to support 19 racks, there needed to be a mil spec actually in place. Thankfully I retired before being thrown into that briar patch. I have wondered, over the years, if I missed anything. Does anyone REALLY know whether or not the 19 inch is a standard or a tradition. 73, Tom, KJ3D (apparently with too-little-else-to-worry-about-today) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Re: [QRP-L] QRP: Who'd DOin All the Work Audio File
On Wed, 27 Dec 2006, Edward R. Breneiser wrote: Hello QRPers! If you want a good laugh, listen to the audio on my QRP Page as it loads up. http://www.wa3wsj.com/WA3WSJ-MyQRPworld.html Oh myand did you tell him Solid copy or So Lid Copy? 73,Thom-k3hrn www.zerobeat.net Home of QRP Web Ring, Drakelist home page,Drake Web Ring, QRP IRC channel, Drake IRC Channel, Elecraft Owners Database www.tlchost.net/hosting/ *** Web Hosting as low as 3.49/month ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] skill instead of brawn, QRP triumphs
All the rationalizations and anecdotal experiences aside, there is no escape from the physical reality that a 100 watt station will be 13 dB stronger than the same station running QRP 5 watts. Whether or not this 13 Db is crucial depends upon propagation conditions and noise and QRM levels at the receiving end. 73, Chuck NI0C There you go. And beating out a station, or a hundred or a thousand stations that are usually from 13 to 25 db stronger than you takes a LOT of skill. this thrill and finesse of DXing QRP, it is like catching a big trout on a tiny fly. Makes no difference to me whether the other station knows I am QRP. I know, and the joy is mine. For example, I worked DXCC on 40 meters alone in one winter running two watts from a NorCal 40. Antenna was a simple full-wave loop. Little things like * eight QRO stations answering 9J2BO on his 7 mhz frequency QRMing each other, I called him up half a khz running two watts and though 20 db weaker, I was the one he could copy. Or * on 40 mtrs, hundreds of stations answering VR2 in a contest, all at the same time, I waited two seconds while everyone sent their call once then listened to see if they got him, while they were listening I sent my call out of sync, QRP, and he came back to me instead, ho ho ho. Or * Listening and listening to VP8 South Sandwich on 80 meters, listening and listening while he worked a pile-up as big as all outdoors, everyone calling endlessly right through his QSO's, when suddenly and apparently unheard he said simply, QSX up 25. I was his only caller in that brief moment, bang, in the log, QRP on 80 meters no less. That's what I'm talking about... 72, Fred - kt5x (W5YA/qrp) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] who does the work in QRP?
Who does the work in QRP? It always is the guy with the better antenna's :) Amen to that. I'm working on QRP-WAS, and I have to admit that most of my QSOs are with hams that have some huge hunks of metal flying above their shacks. Those are a lot easier for everyone involved! But I've also got quite a number of 2-way QRP QSOs in my log - other Elecrafters with wire antennas. Those contacts were, usually, as clear and easy as the others. Maybe it's the K2 mojo, not the antenna or the op or ... :-) 73 de chris K6DBG (looking for QSOs to VT, MA, RI, DE, MD, WV, AR, WY, NE :-) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2/100 output variation
No, that didn't help, Stewart. With the 100 PA disconnected and 5 watts requested, I see around 0.5 w difference in actual power and that is stable. Having re-connected the 100 w pa to restore the K2/100 to the state I would normally use it, I have put a scope on the output. With requested power of 50w, in Tune the readout shows 29w immediately, dropping to 24, 21 and 17w, it then toggles between 17 and 22w. I can see this stepping on the waveform displayed on my scope. It also explains what I was seeing the other night. Since I was working pile-up style, the overs would be short, so each time I went to transmit the power variation in the K2 would also vary drive to the amp with the consequent output variation of between 100 and 200 w from the amp. Chris G3SJJ Stewart Baker wrote: Chris, Take a look here... http://www.elecraft.com/Apps/Power_Control_Mod.html 73 Stewart G3RXQ On Wed, 27 Dec 2006 14:07:24 +, G3SJJ wrote: I am sure I have seen a discussion about this one before. During an enjoyable 160m opening to the Right Coast just before Christmas I was running a few Stateside stations and noticed a definite output power variation coming from my Acom 1000 which was being driven by the K2. I would guess that the drive power was varying between 30 and 50 watts. Any thoughts on this? K2/100 5545 bought at Dayton this year, completed in September. Chris G3SJJ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2/100 output variation
I (and many others) have exactly the same power variation. I just recently changed R99 to 1.1K and that reduced the variation in power to the point that I no longer notice the variations. A check of maximum power output shows that I still get normal performance on all bands. Don K7FJ No, that didn't help, Stewart. With the 100 PA disconnected and 5 watts requested, I see around 0.5 w difference in actual power and that is stable. Having re-connected the 100 w pa to restore the K2/100 to the state I would normally use it, I have put a scope on the output. With requested power of 50w, in Tune the readout shows 29w immediately, dropping to 24, 21 and 17w, it then toggles between 17 and 22w. I can see this stepping on the waveform displayed on my scope. It also explains what I was seeing the other night. Since I was working pile-up style, the overs would be short, so each time I went to transmit the power variation in the K2 would also vary drive to the amp with the consequent output variation of between 100 and 200 w from the amp. Chris G3SJJ Stewart Baker wrote: Chris, Take a look here... http://www.elecraft.com/Apps/Power_Control_Mod.html 73 Stewart G3RXQ On Wed, 27 Dec 2006 14:07:24 +, G3SJJ wrote: I am sure I have seen a discussion about this one before. During an enjoyable 160m opening to the Right Coast just before Christmas I was running a few Stateside stations and noticed a definite output power variation coming from my Acom 1000 which was being driven by the K2. I would guess that the drive power was varying between 30 and 50 watts. Any thoughts on this? K2/100 5545 bought at Dayton this year, completed in September. Chris G3SJJ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Receiver test oscillator for sale XG-1
I have a new kit won at a hamfest I want to sell. This is the XG-1 that lists for $39.00. I want $32.00 shipped. 73, Charlie, W0YG.. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] XG-1 sold
Thanks for the interest. The XG-1 has now sold. 73, Charlie, W0YG.. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Elecraft Christmas
Santa really came through this year (with a little help from the XYL). I found under the tree: - the K2 DSP module - the K2 ATU - the XG2 test oscillator - the step attenuator - the K2 finger dimple would have been there, but was on backorder Fire up the soldering iron Happy New Year to all! 73, Paul, N2PD ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Elecraft Christmas
At 11:51 AM 12/27/2006, Paul Del Negro wrote: Santa really came through this year (with a little help from the XYL). I found under the tree: ppy New Year to all! 73, Paul, N2PD lucky dude Santa for got to bring my KPA1500 ! boo hoo Merrry Christmas and HEALTHY Happy New TO ALL..., bill ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] K2/100 output variation
Chris, You cannot make a sound judgement using TUNE. Evaluate the R98 value change with actual keying. If you change bands or change the power level, it will take a few dot times to settle into the new power setting, that part of your observation is normal. The rest of the situation is due to the loop response of the ALC control loop (that controls the power output) - it is quite with only the base K2, but adding the KPA100 can cause the loop to overshoot and oscillate - increasing R98 reduces the time constant of the loop and reduces the overshoot. Monitor the output on 10 meters during determining the maximum value for R98 - too much resistance will reduce the maximum power output on the higher bands, and yes you can compromise if you are willing to accept the lower power on 10 meters. 73, Don W3FPR -Original Message- No, that didn't help, Stewart. With the 100 PA disconnected and 5 watts requested, I see around 0.5 w difference in actual power and that is stable. Having re-connected the 100 w pa to restore the K2/100 to the state I would normally use it, I have put a scope on the output. With requested power of 50w, in Tune the readout shows 29w immediately, dropping to 24, 21 and 17w, it then toggles between 17 and 22w. I can see this stepping on the waveform displayed on my scope. It also explains what I was seeing the other night. Since I was working pile-up style, the overs would be short, so each time I went to transmit the power variation in the K2 would also vary drive to the amp with the consequent output variation of between 100 and 200 w from the amp. Chris G3SJJ -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.15.28/605 - Release Date: 12/27/2006 12:21 PM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2 SSB Adapter problem
I have just put together the KSB2 SSB ADAPTER and I have problems. Referring to the manual on page 15 “Initial Test” the last paragraph “Verify that the K2 performs...” I do not get any sound in the loudspeaker, or the sound I get is very very muted. I can hear some very faint - both CW and SSB – signals but only when the volume is turned up to max. Else there is no problem doing the “BFO Test”, “Receive-Mode SSB Filter Test” and “BFO Setup for LSB/USB” I have checked the voltages as seen on page 23 in the manual and found the following anomalies in receive mode: U1-21... zero volt (should be 5.8) U2-5 6.0 volt (should be 0.6) U4-3 6.0 volt (should be 0.6) D10-D13 and D6-D9... no voltage in receive mode. So, what could be the matter? 73 de Håkan / SM6EQO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] KPA100 Elimination?
Happy Holidays to all: To all those looking to split the KPA100 into an EC2 enclosure, take a look at Lyle's website: http://www.kk7p.com/k2kpa100.html It contains a very detailed explanation and lots of pictures of how to do it. The first part describes placing the KPA100 in an EC2 enclosure by itself, and as Don alluded to, there is some modification of the enclosure to allow the cables to pass from the K2 to the EC2 enclosure. The second option shown is putting the KPA100 in an EC2 enclosure along with a KAT100. With this option all of the connections for power and RF can be accomplished internally and with the addition of a KIO2 board in the basic K2 makes for a very clean interface between the two boxes. In my case I chose to add a KIO2, KAT2 and KBT2 battery option to my basic K2 and then placed my KPA100 with my KAT100 into the EC2 enclosure. My goal was to enable me to unplug a few cables and take my K2 on the road or simply plug it all back in and I'm QRO again. I found the process to be nice and clean and seems to work very well. There is a mod to L1 on the AUXBUS board to the KIO2 that should be performed as well. For those who are looking to do this before you buy the KPA100 KAT100 options, it will be much more cost effective to do it at the onset instead of how I did it after the fact. At the same time I also added a SmartCharger to run and charge the basic K2 as detailed on Don Wilhelm's web site. It provides enough power to run the K2 in receive mode and then top off the internal battery after transmitting use in way that is good for the battery. This option is a cheap version for me to still operate in a temporary power outage situation (QRP of course). If anyone has any questions, contact me off list and I'll answer all I can. So far I'm pretty happy with the setup and I think it looks good too. Maybe one of these days I'll put up a small website and put up some pics. Dave, W8FGU K2 #5099 -Original Message- From: [EMAIL PROTECTED] [mailto:elecraft- [EMAIL PROTECTED] On Behalf Of Chris Kantarjiev Sent: Tuesday, December 26, 2006 7:55 PM To: elecraft@mailman.qth.net Subject: RE: [Elecraft] KPA100 Elimination? I've always planned to extend my QRP K2 with a KPA100/KAT100 in a separate EC2 - this would let me pack up my barefoot K2 for /p operation without much nuisance, and still run QRO when desired. I figure that's at least 12-18 months away, given the other projects I have lined up. If Eric and Wayne were to put together a KPA400/KAT400 combination that fits in an EC2 and interfaces the same way, I would almost certainly buy it, instead! I'm in no hurry to do this - I'm having lots of fun with QRP - but I see the value in being able to run QRO at times. 73 de chris K6DBG ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KPA100 Elimination?
Dave, It really isn't necessary to change out L. John, KI6WX also has a web site that outlines the process for remoting the KPA100/KAT100 and his conclusion was L1 didn't need to be changed. After almost a year of operation not having changed L1, I have had no problems. Joe N9JR - Original Message From: Dave Van Wallaghen [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Wednesday, December 27, 2006 1:41:34 PM Subject: RE: [Elecraft] KPA100 Elimination? Happy Holidays to all: In my case I chose to add a KIO2, KAT2 and KBT2 battery option to my basic K2 and then placed my KPA100 with my KAT100 into the EC2 enclosure. My goal was to enable me to unplug a few cables and take my K2 on the road or simply plug it all back in and I'm QRO again. I found the process to be nice and clean and seems to work very well. There is a mod to L1 on the AUXBUS board to the KIO2 that should be performed as well. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[QRP-L] RE: [ARLHS] Polar Bear Challenge 2007
Ed Maybe this will get some of use out of the shack and doing a little exercise. I am going to take my bike out of the garage today and to the shop to get it fixed up to ride. Paul KF4YUZ -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Edward R. Breneiser Sent: Wednesday, December 27, 2006 9:19 AM To: elecraft@mailman.qth.net; [EMAIL PROTECTED]; [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: [ARLHS] Polar Bear Challenge 2007 Visit the ARLHS online ship's store: http://cafepress.com/arlhs _ Hello all, Do you have what it takes? If you think so, then check out the Polar Bear Challenge 2007. http://www.wa3wsj.com/PBChallenge2007.html 72, Ed,WA3WSJ __ ARLHS mailing list Home: http://mailman.qth.net/mailman/listinfo/arlhs Help: http://mailman.qth.net/mmfaq.html Post: mailto:[EMAIL PROTECTED] -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.15.28/604 - Release Date: 12/26/2006 12:23 PM -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.15.28/604 - Release Date: 12/26/2006 12:23 PM __ QRP-L mailing list Home: http://mailman.qth.net/mailman/listinfo/qrp-l Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[EMAIL PROTECTED]
[Elecraft] Best wishes
Best wishes for the new year to the whole Elecraft community. I am building K2 #5636 and hope to attack shortly the first Toroïd. I have been reading this reflector for around 3 months and I am very impressed by the quality of the contributions. A special thank you to Tom Hammond, Don Wilhelm and Rond d'Eau Claire (What a poetic French name !) for all the time they are dedicating to help the Elecrafter builders and users. I know now that I will never be stuck... Raymond METZGER 78121 Crespières France ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] KSB2 SSB Adapter problem
Haken, At this point, do not be concerned about those voltages you found did not agree with the chart in the manual. The no voltages at the diodes is a cause for concern. The problem may be in where you measured for voltage or the settings you were using. We will get to that. Let's verify that the source for the diode switching voltages are correct: First thing, set the SSB FL1 filter to OP1 (using the K2 menu). Set the K2 to SSB mode and be certain FL1 is selected. Now measure the voltage at U1 pin 21 (should be about 6 volts), and measure the voltage at U1 pin 22 (should be near zero volts). Now, switch to CW mode (any of the CW filters is OK), and measure the voltage at U1 pin 21 (should now be near zero volts) and U1 pin 22 (should now be near 6 volts). You should also find about 6 volts at the cathode of D7 and D8 and at the cahode of D11 and D12. If you do not have these voltages present, check to be certain RFC1 and RFC2 are not shorting to the crystal cases (insert a sheet of paper between the choke and the crystal as an insulator). If all the checks above are correct, switch back to SSB mode, FL1 (OP1) filter and check for about 6 volts at the cathode of D6 and D9 and at the cathode of D10, D13 and D14. If you find all those voltages correct, the filters should switch between the CW filter and the SSB filter. Just as information if you are following the schematic - the RXC signal indicates that receive should be through the CW filter when this signal is active (about 6 volts), and RXS indicates that the receive path is through the SSB filter when this signal is active. Make the checks above, and if that did not lead you to fine the source of the problem, send us your report of your findings. 73, Don W3FPR -Original Message- I have just put together the KSB2 SSB ADAPTER and I have problems. Referring to the manual on page 15 “Initial Test” the last paragraph “Verify that the K2 performs...” I do not get any sound in the loudspeaker, or the sound I get is very very muted. I can hear some very faint - both CW and SSB – signals but only when the volume is turned up to max. Else there is no problem doing the “BFO Test”, “Receive-Mode SSB Filter Test” and “BFO Setup for LSB/USB” I have checked the voltages as seen on page 23 in the manual and found the following anomalies in receive mode: U1-21... zero volt (should be 5.8) U2-5 6.0 volt (should be 0.6) U4-3 6.0 volt (should be 0.6) D10-D13 and D6-D9... no voltage in receive mode. So, what could be the matter? 73 de Håkan / SM6EQO -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.15.28/605 - Release Date: 12/27/2006 12:21 PM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] NY Times story on end of morse requirement (with neat photos famous hams)
http://www.nytimes.com/2006/12/27/business/27morse.html?_r=1oref=slogin If you get prompted to register (I don't think you will), just register...no cost. de Doug KR2Q ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2/100 output variation
Yes I understand Don. I was using the TUNE effect to demonstrate what I see. I performed the following test on 40m with my 2 element phased array connected and an SWR of 1:1. Keying with a series of dashes, K2 output power of 34 watts initially dropped to 26w then toggled between 26 and 34, this translated to an output power of 435w and 561w. With slightly more drive it oscillated between 42 and 50w producing about 670 and 830. The changeover time between the two levels is between 1 and 2 seconds. I didn't want to continuing QRMing the band so declined to check at full bore! (it is about 780w and 1kW for each state) Someone emailed me directly and said he had changed **R99** to 1.1K, so now I am not sure whether to change R98 or R99?? 73 Chris G3SJJ Don Wilhelm wrote: Chris, You cannot make a sound judgement using TUNE. Evaluate the R98 value change with actual keying. If you change bands or change the power level, it will take a few dot times to settle into the new power setting, that part of your observation is normal. The rest of the situation is due to the loop response of the ALC control loop (that controls the power output) - it is quite with only the base K2, but adding the KPA100 can cause the loop to overshoot and oscillate - increasing R98 reduces the time constant of the loop and reduces the overshoot. Monitor the output on 10 meters during determining the maximum value for R98 - too much resistance will reduce the maximum power output on the higher bands, and yes you can compromise if you are willing to accept the lower power on 10 meters. 73, Don W3FPR -Original Message- No, that didn't help, Stewart. With the 100 PA disconnected and 5 watts requested, I see around 0.5 w difference in actual power and that is stable. Having re-connected the 100 w pa to restore the K2/100 to the state I would normally use it, I have put a scope on the output. With requested power of 50w, in Tune the readout shows 29w immediately, dropping to 24, 21 and 17w, it then toggles between 17 and 22w. I can see this stepping on the waveform displayed on my scope. It also explains what I was seeing the other night. Since I was working pile-up style, the overs would be short, so each time I went to transmit the power variation in the K2 would also vary drive to the amp with the consequent output variation of between 100 and 200 w from the amp. Chris G3SJJ -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.15.28/605 - Release Date: 12/27/2006 12:21 PM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KSB2 SSB Adapter problem
Don, it was a short betwen either RFC1 or RFC2 and one of the crystal cases that caused the problem. Really embarassing because it was basically the first and only real problem I have come upon building my K2 #5810 and all the extras... :-) It's so easy to happen that I really think it should be pointed out in the manual. 73 de Haakan / SM6EQO -- Don Wilhelm skrev: Haken, At this point, do not be concerned about those voltages you found did not agree with the chart in the manual. The no voltages at the diodes is a cause for concern. The problem may be in where you measured for voltage or the settings you were using. We will get to that. Let's verify that the source for the diode switching voltages are correct: First thing, set the SSB FL1 filter to OP1 (using the K2 menu). Set the K2 to SSB mode and be certain FL1 is selected. Now measure the voltage at U1 pin 21 (should be about 6 volts), and measure the voltage at U1 pin 22 (should be near zero volts). Now, switch to CW mode (any of the CW filters is OK), and measure the voltage at U1 pin 21 (should now be near zero volts) and U1 pin 22 (should now be near 6 volts). You should also find about 6 volts at the cathode of D7 and D8 and at the cahode of D11 and D12. If you do not have these voltages present, check to be certain RFC1 and RFC2 are not shorting to the crystal cases (insert a sheet of paper between the choke and the crystal as an insulator). If all the checks above are correct, switch back to SSB mode, FL1 (OP1) filter and check for about 6 volts at the cathode of D6 and D9 and at the cathode of D10, D13 and D14. If you find all those voltages correct, the filters should switch between the CW filter and the SSB filter. Just as information if you are following the schematic - the RXC signal indicates that receive should be through the CW filter when this signal is active (about 6 volts), and RXS indicates that the receive path is through the SSB filter when this signal is active. Make the checks above, and if that did not lead you to fine the source of the problem, send us your report of your findings. 73, Don W3FPR -Original Message- I have just put together the KSB2 SSB ADAPTER and I have problems. Referring to the manual on page 15 “Initial Test” the last paragraph “Verify that the K2 performs...” I do not get any sound in the loudspeaker, or the sound I get is very very muted. I can hear some very faint - both CW and SSB – signals but only when the volume is turned up to max. Else there is no problem doing the “BFO Test”, “Receive-Mode SSB Filter Test” and “BFO Setup for LSB/USB” I have checked the voltages as seen on page 23 in the manual and found the following anomalies in receive mode: U1-21... zero volt (should be 5.8) U2-5 6.0 volt (should be 0.6) U4-3 6.0 volt (should be 0.6) D10-D13 and D6-D9... no voltage in receive mode. So, what could be the matter? 73 de Håkan / SM6EQO -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.15.28/605 - Release Date: 12/27/2006 12:21 PM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2/100 output variation
Sorry, that was my email I should have said R98. Don K7FJ Someone emailed me directly and said he had changed **R99** to 1.1K, so now I am not sure whether to change R98 or R99?? 73 Chris G3SJJ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] 19inch Racks - somewhat OT
Ah yes... The wonders of the internet. Alas, it wasn't (largely) available when I was assigned the research in the early '80s. I had to go to actual libraries and pore over actual books to find the answer - which I never did find. I completely missed the reference to relay racks (although the phrase is familiar). I guess the genesis could have been trains, but since Adm Tuttle was a submariner, I think he would have preferred the submarine as the point of origin. Thanks for the research es 73, Hope everyone has a joyous holiday (be it whatever) season. Tom -Original Message- From: Craig Rairdin [mailto:[EMAIL PROTECTED] Sent: Wednesday, December 27, 2006 10:23 AM To: 'Tom Skinner'; elecraft@mailman.qth.net Subject: RE: [Elecraft] 19inch Racks - somewhat OT From Wikipedia (www.wikipedia.org) the repository of all knowledge: A 19-inch rack is a standardized (EIA 310-D, IEC 60297 and DIN 41494 SC48D) system for mounting various electronic modules in a stack, or rack, 19 inches (482.6 mm) wide. Equipment designed to be placed in a rack is typically described as rack-mount, a rack mounted system, a rack mount chassis, subrack, or occasionally, simply shelf. The slang expression for a subrack (generally 1U height) is pizza box due to the similarity in size and shape. Because of their origin as mounting systems for railroad signaling relays, they are still sometimes called relay racks, but the 19-inch rack format has remained a constant while the technology that is mounted within it has changed to completely different fields. This standard rack arrangement is widely used throughout the telecommunication, computing, and entertainment industries, as well as others. Craig NZ0R -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tom Skinner Sent: Wednesday, December 27, 2006 9:09 AM To: elecraft@mailman.qth.net Subject: [Elecraft] 19inch Racks - somewhat OT Good Morning Group, I just have to share this. Before I retired from the Navy, I was serving with the Joint Chiefs of Staff, as one of the assistants to the communications guru, one particularily gruff vice admiral who I'm pretty sure coined the phrase lead, follow or get the hell out of the way, and liked to continually stir whatever pot he happened to be in charge of at the time. For whatever reason, he called me into his office, one day, and asked me if the 19 inch rack panel was a standard or a tradition. I had long since learned not to ask him why he was curious, I just charged off to find out. I uncovered countless references to 19 racks, and a lot of things which specified it, but failed to find out anything about its genisus. Since failure was not an option, I reported that it had something to do with the width of hatches on early submarines, but an original order - if one existed - was lost in the fog of the past. In any event, the 19 inch standard was so deeply ingrained in the military (and a good bit of civilian industry as well) that it might as well have come down as the 11th commandment. He grudently accepted my findings, but continued to press the issue, claiming that if services were going to continue to support 19 racks, there needed to be a mil spec actually in place. Thankfully I retired before being thrown into that briar patch. I have wondered, over the years, if I missed anything. Does anyone REALLY know whether or not the 19 inch is a standard or a tradition. 73, Tom, KJ3D (apparently with too-little-else-to-worry-about-today) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2/100 output variation
Yes thanks Don. R99 is also mentioned in http://www.elecraft.com/Apps/Power_Control_Mod.html so I was getting a bit confused! 73 Chris G3SJJ Don wrote: Sorry, that was my email I should have said R98. Don K7FJ Someone emailed me directly and said he had changed **R99** to 1.1K, so now I am not sure whether to change R98 or R99?? 73 Chris G3SJJ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] who does the work in QRP?
On Wed, 27 Dec 2006, Tom Hall wrote: First of all, let me apologize right off the bat to any traumatized QRO station that might have been driven to excess drinking or required extra therapy as a result of a having a QSO with my QRP station. I envision a whole class of ham that was forced into early RF retirement caused by all the extra work involved in working low power stations. I only hope that their misery is offset by knowing the absolute joy of having worked them with low power equipment that I built with my own two hands. Just to make another point in this possibly pointless debate: all the antenna systems I've worked on are either kits or homebrew. Nobody will deliver an assembled tower or beam to your house (unless you live next door to AN Wireless, I bet, or can put up a nice monopole since you're richer than I'll ever be.) Towers aren't really kits, since you have to collect the parts from different vendors. Oh, and as far as really big amps go, they're almost all homebrew. All this is unlike a lot of QRP gear, which are KITS, not homebrew. Not that any of this one-upmanship gets us anywhere. Actually, if I get you off the computer on the air, that's a positive! -- Hisashi T Fujinaka - [EMAIL PROTECTED] BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) + $2.50 = latte ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] Sidetone volume
Fred, Since you are reducing the setting of the AF gain control when changing from headphones to the speaker? If so, that is the reason in a 'nutshell' - the level of the sidetone is not controlled by the AF gain. So, if you set the sidetone level to be correct for your speaker volume, then it will be too loud when you reduce the AF Gain for use with the headphones. I would suggest that you try increasing the value of R35 and R36 on the K2 RF Board so you do not have to reduce the AF Gain as much when using the headphones - or switch to a less sensitive set of headphones. You can also just change the sidetone level in the menu (assigned by default to the PF1 button) when switching from speaker to headphones. 73, Don W3FPR -Original Message- My wife often invades my shack to watch TV while my son plays Xbox on the TV in the living room. I plug in my headphones while she is watching TV so that the noise won't bother her...(and the noise from the TV won't bother ME)...But when she's gone I unplug the headphones and use an external speaker. I have noticed a VAST difference in the sidetone volume between headphones and speaker. I must turn DOWN the volume a BUNCH when using the headphonesbut then when using the external speaker the sidetone is almost completely silent. I adjust the volume for comfortable listening levels with both the headphones and the speaker...but the sidetone volume seems to change between the two. Is there a cure for the difference in sidetone levels?? 73...de...Fred N9TA -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.15.28/605 - Release Date: 12/27/2006 12:21 PM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] Sidetone volume
Tnx Don I think you may have hit the nail on the head. I DO have to reduce the volume greatly when using the headphones. From my perusal of the schematic for the K2, it looks like if I changed R36 it would change the AF level on both the speaker AND the phones...NOT what I *think* I want. It looks like R35 (a 82 ohm resister) is in line with the AF feed for the phones. Does this look right?? On Phones I use a sidetone level of 25...on speaker I use a sidetone level of 140is it possible to deduce from this what a good value of resister would be for R35?? TNX for the help!! 73...de...Fred N9TA ___ Fred, Since you are reducing the setting of the AF gain control when changing from headphones to the speaker? If so, that is the reason in a 'nutshell' - the level of the sidetone is not controlled by the AF gain. So, if you set the sidetone level to be correct for your speaker volume, then it will be too loud when you reduce the AF Gain for use with the headphones. I would suggest that you try increasing the value of R35 and R36 on the K2 RF Board so you do not have to reduce the AF Gain as much when using the headphones - or switch to a less sensitive set of headphones. You can also just change the sidetone level in the menu (assigned by default to the PF1 button) when switching from speaker to headphones. 73, Don W3FPR -Original Message- My wife often invades my shack to watch TV while my son plays Xbox on the TV in the living room. I plug in my headphones while she is watching TV so that the noise won't bother her...(and the noise from the TV won't bother ME)...But when she's gone I unplug the headphones and use an external speaker. I have noticed a VAST difference in the sidetone volume between headphones and speaker. I must turn DOWN the volume a BUNCH when using the headphonesbut then when using the external speaker the sidetone is almost completely silent. I adjust the volume for comfortable listening levels with both the headphones and the speaker...but the sidetone volume seems to change between the two. Is there a cure for the difference in sidetone levels?? 73...de...Fred N9TA -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.15.28/605 - Release Date: 12/27/2006 12:21 PM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] KPA100 Elimination?
Thanks for this link and your comments. I really like this idea but was hoping to just build the K2/100 and use it for awhile, then repackage it. Now it sounds like that may be a bad idea. I do wish the KPA100/KAT100 would work with any rig, but I guess you can't have everything. The idea of a little separate portable QRP rig is very appealing to me (someone who has never worked QRP). Guess I have to order a KIO2 after all! 73, Tom KG3V Quoting Dave Van Wallaghen [EMAIL PROTECTED]: Happy Holidays to all: To all those looking to split the KPA100 into an EC2 enclosure, take a look at Lyle's website: http://www.kk7p.com/k2kpa100.html It contains a very detailed explanation and lots of pictures of how to do it. The first part describes placing the KPA100 in an EC2 enclosure by itself, and as Don alluded to, there is some modification of the enclosure to allow the cables to pass from the K2 to the EC2 enclosure. The second option shown is putting the KPA100 in an EC2 enclosure along with a KAT100. With this option all of the connections for power and RF can be accomplished internally and with the addition of a KIO2 board in the basic K2 makes for a very clean interface between the two boxes. In my case I chose to add a KIO2, KAT2 and KBT2 battery option to my basic K2 and then placed my KPA100 with my KAT100 into the EC2 enclosure. My goal was to enable me to unplug a few cables and take my K2 on the road or simply plug it all back in and I'm QRO again. I found the process to be nice and clean and seems to work very well. There is a mod to L1 on the AUXBUS board to the KIO2 that should be performed as well. For those who are looking to do this before you buy the KPA100 KAT100 options, it will be much more cost effective to do it at the onset instead of how I did it after the fact. At the same time I also added a SmartCharger to run and charge the basic K2 as detailed on Don Wilhelm's web site. It provides enough power to run the K2 in receive mode and then top off the internal battery after transmitting use in way that is good for the battery. This option is a cheap version for me to still operate in a temporary power outage situation (QRP of course). If anyone has any questions, contact me off list and I'll answer all I can. So far I'm pretty happy with the setup and I think it looks good too. Maybe one of these days I'll put up a small website and put up some pics. Dave, W8FGU K2 #5099 -Original Message- From: [EMAIL PROTECTED] [mailto:elecraft- [EMAIL PROTECTED] On Behalf Of Chris Kantarjiev Sent: Tuesday, December 26, 2006 7:55 PM To: elecraft@mailman.qth.net Subject: RE: [Elecraft] KPA100 Elimination? I've always planned to extend my QRP K2 with a KPA100/KAT100 in a separate EC2 - this would let me pack up my barefoot K2 for /p operation without much nuisance, and still run QRO when desired. I figure that's at least 12-18 months away, given the other projects I have lined up. If Eric and Wayne were to put together a KPA400/KAT400 combination that fits in an EC2 and interfaces the same way, I would almost certainly buy it, instead! I'm in no hurry to do this - I'm having lots of fun with QRP - but I see the value in being able to run QRO at times. 73 de chris K6DBG ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] Sidetone volume
Fred, R35 and R36 are only in series with the headphones, not the speaker (follow the audio amp output through the switch on the headphone jack to verify). You will have to experiment with the required value - I do not have voltage levels corresponding to the numbers of STL, nor do I have the SPL rating for your headphones. 73, Don W3FPR -Original Message- Tnx Don I think you may have hit the nail on the head. I DO have to reduce the volume greatly when using the headphones. From my perusal of the schematic for the K2, it looks like if I changed R36 it would change the AF level on both the speaker AND the phones...NOT what I *think* I want. It looks like R35 (a 82 ohm resister) is in line with the AF feed for the phones. Does this look right?? On Phones I use a sidetone level of 25...on speaker I use a sidetone level of 140is it possible to deduce from this what a good value of resister would be for R35?? TNX for the help!! 73...de...Fred N9TA -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.15.28/605 - Release Date: 12/27/2006 12:21 PM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Elecraft Christmas
Santa must have made more than one trip to the factory as I had an Elecraft Christmas too! http://ke9v.net/2006/12/26/elecraft-hexkey/ :-) 73 de Jeff On Dec 27, 2006, at 12:51 PM, Paul Del Negro wrote: Santa really came through this year (with a little help from the XYL). I found under the tree: - the K2 DSP module - the K2 ATU - the XG2 test oscillator - the step attenuator - the K2 finger dimple would have been there, but was on backorder Fire up the soldering iron Happy New Year to all! 73, Paul, N2PD ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] Sidetone volume
I think you may have hit the nail on the head. I DO have to reduce the volume greatly when using the headphones. From my perusal of the schematic for the K2, it looks like if I changed R36 There isn't really any need to modify resistor values in the K2 to achieve what you want, unless you like to play inside it. It can be done much easier, I think, with an external headphone extension cable with a built-in volume control. A picure explains what I mean better than words: go to http://www.clasohlson.no/Product/Product.aspx?id=383540 and click on the picture (this is the one I got locally in Norway). It will give you continously variable volume control so you don't have to experiment with fixed resistors inside the K2. I am sure RadioShack has something similar and that someone else on the list can help find it. 73 Sverre LA3ZA http://www.qslnet.de/la3za/ -- Jeg bruker gratisversjonen av SPAMfighter for privatbrukere. Den har fjernet 5696 soppelpostmeldinger til na. Betalende brukere har ikke denne meldingen i e-postene sine. Fa tak i SPAMfighter gratis her: http://www.spamfighter.com/pro -- Jeg bruker gratisversjonen av SPAMfighter for privatbrukere. Den har fjernet 5696 soppelpostmeldinger til na. Betalende brukere har ikke denne meldingen i e-postene sine. Fa tak i SPAMfighter gratis her: http://www.spamfighter.com/pro ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] (LONG) Run For The Bacon 2006 Results
Wow! It's been quite a year! First and foremost, thanks to every single one of you who have participated in the Flying Pigs monthly Run For The Bacon Sprint. The only way I can guage participation is when the participants use the Autolog; or send me their logs via e-mail or snail mail. I know from month to month there were a few individuals that participated that did NOT send in their scores. So the actual figures are slightly better than I can report. But from what I have, I can tell you that in 12 Sprints, we had 421 entries recorded throughout the year; for an average of 35 participants per month. Not too shabby! Before I announce the top winners for the year, here are December's results: Taking First Place was Bill, K1EV with 816 points. Second place for December is awarded to Greg, K4KO, while Third Place is awarded to Barry K4CZ. You will all receive certificates in the mail; and Bill, you will be receiving the special Holiday Piggie Prize courtesy of Jeff, K3OQ. K1EV816 pts. K4KO770 pts. K4CZ765 pts. NØJRN 648 pts. W9NX418 pts. K4BAI 297 pts. KA2KGP 252 pts. KD2MX 243 pts. WA3OFF 189 pts. K5JHP 168 pts. W2LJ147 pts. WA8THK 108 pts. K3NCO 108 pts. K8BTD 108 pts. N1VWD 048 pts. K7TQ040 pts. N2COD 015 pts. W9ILF 012 pts. K5GQ009 pts. K3OQ006 pts. AA7DX 003 pts. K3DCB 003 pts. AD7AN 003 pts. K6BBQ 000 pts. KC5GXL 000 pts. KB9BVN 000 pts. Now, the top award for the year, The Top Hog of the Sty Award goes to none other than John Laney, K4BAI. John finished in 1st Place four times this year; and in all finishes where John placed 1st, 2nd or 3rd he accumulated 23,083 points. Second Place winner for the year goes to Dick Housden, WØNTA. Dick finished in 1st place twice and in all his top three finishes, Dick accumulated 12,769 points. Third Place finisher for the year goes to Bob Patten N4BP. Bob also placed 1st twice; and in all his top 3 finishes for they year, he accumulated 9,756 points. All three gentlemen will be receiving special certificates for their yearly totals and will be receiving special Piggie mementos as well. There will also be Certificates of Achievement given to those who participated in at least 10 of the 12 RFTBs. You folks will be receiving your certificates in January. However, I would like to pay special attention and mention those who had perfect attendance. These devoted Sprinters made ALL 12 RFTBs. They are: K4KO, K6BBQ, KA2KGP, KD2MX, NØJRN, W2LJ, W9NX, and WA8THK. Once again, thanks to all of you who have participated in RFTB. We try to run this monthly event in the spirit of the Flying Pigs - just fun! I hope you've all enjoyed it as much as I have and I hope to see you all back in 2007. And a special invitation goes out to all of you who haven't participated; or perhaps have never tried a QRP Sprint. Join us one month! I guarantee that you will make friends and have a good time. You don't even need to be an FP to join in (but we invite you to join, anyway!) 73 de Larry W2LJ FP Contest Manager - FP #612 -- Larry W2LJ QRP - When you care to send the very least! http://www.w2lj.qrpradio.com http://w2lj.blogspot.com/ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] who does the work in QRP?
Sometimes I use my 400mW Mizuho or HB rigs, sometimes I use the Omni 6 and the Centurion at 1kW out. The type of tool depends on the type of task. One's not any more fun than the other as the saying goes, it's all good! John K5MO PS: VU7LD @ 900W is better than *not* VU7LD with my KX1 :-) -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.409 / Virus Database: 268.15.28/604 - Release Date: 12/26/2006 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] RE: 19inch Racks - more OT
Now we all have been taught about relay racks (19 inches). Telephone companies use 23 inch racks. In the EMC field we use a _41_ inch rod antenna to measure low-frequency electric fields. Why 41 inches? As related to me, when testing was done on the C47, that was the longest rod antenna that would fit at the radio operators position. And now it's standard. BUT! Per http://www.jedai.com/solutions/Plant_Business_Ready.pdf a telecom rack has TWO sizes: the smaller NEBS rack is 20 5/16. Great sliding standards, Batman! Where will it end? Woe! Woe! Ahem. The decibel is mighty nice; You can measure once, and then cut twice. The reason we can be so free? To one dB, pi equals... three! Cortland KA5S [Original Message] Tom, KJ3D wrote particularily gruff vice admiral who I'm pretty sure coined the phrase lead, follow or get the hell out of the way, and liked to continually stir whatever pot he happened to be in charge of at the time. For whatever reason, he called me into his office, one day, and asked me if the 19 inch rack panel was a standard or a tradition. I had long since learned not to ask him why he was curious, I just charged off to find out. I uncovered countless references to 19 racks, and a lot of things which specified it, but failed to find out anything about its genisus. Since failure was not an option, I reported that it had something to do with the width of hatches on early submarines, but an original order - if one existed - was lost in the fog of the past. In any event, the 19 inch standard was so deeply ingrained in the military (and a good bit of civilian industry as well) that it might as well have come down as the 11th commandment. He grudently accepted my findings, but continued to press the issue, claiming that if services were going to continue to support 19 racks, there needed to be a mil spec actually in place. Thankfully I retired before being thrown into that briar patch. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Dayton Hamvention
I'm sure you will get other responses, but here are my thoughts: If you have the time, definitely do FDIM. It is fantastic. The hotel (been there the last two years) is good and the staff is very supportive of us. (Ask about the tent for an example) As for Hamvention itself, I've always parked behind Salem Mall and taken the shuttle. Best deal on price. The Hamvention website will have a list of events, forums, and seminars as we get closer to May. Take a look at that when it is available and see what you are interested in from the list. Take the time to see the vendors inside and the flea market outside. If you have the time, you can stay for the last chance drawing for the unclaimed door prizes. Finally, don't forget the Elecraft booth. (That's your don't miss) Clark, N8CBW ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Getting above the noise - AF1 Active Filter with Audio Amplifier
Great product right here in our own back yard. $59.95 from Elecraft, and is one of their mini kits. From the web page: The Elecraft AF1 is a versatile audio filter that can be used with any receiver or transceiver. It can improve intelligibility of CW, phone, or data signals, and is especially well suited to radios that have inadequate I.F. or audio filtering. The AF1 uses straightforward analog circuitry and no surface-mount components, so its an ideal project for first-time kit builders. A rotary switch on the unit allows you to select a low-pass characteristic with adjustable upper frequency roll-off, or a narrow bandpass characteristic. The bandpass filter offers two levels of selectivity, and its center frequency may be tuned from about 350 Hz to about 950 Hz. The low-pass filter is active during bandpass operation, allowing you to further control the upper frequency response. The output amplifier drives low impedance phones or a small loudspeaker. Power can be supplied via either an on-board 9-V battery or an external supply. An LED indicates power on/off status. __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2: Hi Cur on 30m
Just to close this thread in case anyone was wondering about it, I installed the KPA100UPKT today and it solved the HI CUR on 30m problem. The K2 now draws less than 1.7 A on 30m with 100 W tx into dummy load compared to 4.1 A before. What a nice change. My thanks to Don and the Elecraft Parts crew! K1 #2298 was just finished this morning as well. What will I do with all this extra time now? Not sure I still remember how to operate the rigs. :-) 73, Mike ab3ap Don Wilhelm wrote: ...If the turns on the KPA00 low pass filter toriods are correct and all the C3x capacitors are correct, you may want to install the KPA100UPKT and see if that brings things under control... 73, Don W3FPR -Original Message- I just noticed I'm getting a Hi Cur message only on 30m. ... Mike ab3ap ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] Dayton Hamvention
... my first ever Dayton Hamvention and/or FDIM! ... So I am looking for any information and suggestions that anyone might have. When walking through the flea market, work out a pattern that allows you to switch which direction you're looking. If you do like I did last year and walk down an aisle looking at the booths on your right, then turn around at the end of the aisle and come back down the other side with the booths on your right again, then repeat this for several aisles, your neck will be really, really sore and you won't be able to turn your head to the left for the rest of the day. This is dangerous when you go to drive home. Get cash before you get to the arena. There's an ATM machine there but it seems to be very picky about what cards it will take. I've always had success but judging by the level of cursing from the people before me, it doesn't always work for everyone. On the other hand, a strategic stop or two at the ATM will allow you to report: I went to Dayton with $500 in my pocket, and I came home with $500 in my pocket. Don't monitor the talk-in repeater. Just jump on and ask the same questions that everyone has been asking for the last hour. I've never done that, but based on listening to the repeater, that's the rule. :-) Along those lines, don't go to the hamvention.org Web site and print a map, or find out what tickets cost, or when the arena opens, or where the parking lot is. Just drive to Ohio and ask around. :-) Craig NZ0R ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] who does the work in QRP?
Great thread! Before I make my point I would like to point out that I work almost always qrp using my KX1. One of my Christmas presents this year was a NOSS CW Tuning Indicator (SMD). I built and installed it today and it works fine! FWIW. I occasionaly tune into a 17 meter SSB WAS net using 100 watts into a rotatable trapped dipole. Before I got my linear I could hardly make any contacts, most of the stations checking in were on the east coast! After I got my linear I not only could make contact with ANYONE who checked in but was asked to act as a relay station for stations having trouble! Power helps! More power helps more! I still use only qrp for rc and day to day radio fun but when I spot DX I need I crank up the linear (after checking propagation) and give it a shot. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
