[Elecraft] FD Results
W2GD/N4HY had a very good field day. Our Elecraft 2A battery QRP was SIXTH OVERALL. We used IC-703 for the GOTA. That will be another K2 if we do this again. I took the IC-703 back the day after FD. (Gag me with a spoon). It started dropping power to zero after an hour of operation. Horrible image rejection, just a terrible receiver and very poor quality control. Those 16000+ points prove that QRP is no serious impediment to a serious score at FD. I can't even begin to tell you how many points we left on the table from various screw ups. The K2 is an awesome QRP FD radio. Bob N4HY ___ 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: Elecraft Digest, Vol 7, Issue 4
Michael, It is not the coil intercepting the magnetic field, but the core, whose effective permeability is being modulated. I had a similar problem some decades ago with a Ten Tec Triton II; when I drove over rebar in the paving, or over steel beams, etc., the PTO would hiccup momentarily as the local magnetic field changed, and the VFO would QSY perhaps 50 Hz even when I turned a corner. For those with a severe problem , a 'hum-bucker might help; in this case, a smaller transformer located on the desktop, whose position and orientation could be changed to null the sizeable field coming from the linear's more distant power supply. More permenant solutions suggest themseves; an iron shield around L30, making L30 air core, or perhaps even adding a regulated core bias current at L30 to swamp the external field. (Like hiring a bagpiper to drown out a neighborhood garage band, but) Cortland KA5S K1'ing since 30 October [EMAIL PROTECTED] wrote: What I don't understand is this: I figure L30 has perhaps 14 turns, and 2.3 ohms winding resistance. I figure that the effective aperture is 1 cm squared. I figure that the winding resistance of T5 is 0.05 ohms, so a 1 gauss vertical 60 Hz field will induce 37 micro volts on T5. That should cause 0.3 Hz FM modulation on 80 meters. No one should notice that? BTW, I calculated 2.3 ohms from the Q, sensitivity at T5 goes way up if L30 has less resistance. ___ 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: Cost Effective Balun
Gang, Chas, W1CG has provided some excellent info about baluns and their usage. He is entirely too modest to mention it, but he has done much practical and theoretical investigation with balun usage under the conditions being discussed. He even resorted to the old tried and true calorimetric method of measuring the loss values he quoted! His work is documented in an excellent article -the NJQRP Homebrewer #8 published in April 2002. Photos of balun construction and his test setup can be found at http://www.njqrp.org/qhbextra/8/8d.html And as Charles stated, the balun details are presented at: http://www.njqrp.org/balun/index.html It is an excellent well documented and effective design by Chas that can easily be duplicated by the average homebrewer. Yes, you *can* try this yourself at home! You don't have to be a trained professional. 72/73, Joe E., N2CX ___ 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
FW: [Elecraft] K2 - SN4511 Diffuser Question
Hello Malcolm, I am a bit confused with LCD backlight diffuser. It has a really nasty looking thin film on top which appears to be protective only then below it another matt white thin film which appears to be attached at LED ends of the diffuser only. Looking at the instructions it appears to say that I should not remove any of these. Help please. Do I remove the top one which looks awful, both or none? My LCD diffuser had 4 layers. The back side was thin as paper and was white. Next was a thick, water clear, plastic sheet, same thickness as printed circuit board material. Next was a thin, soft, white diffusing layer that was only attached at the LED ends of the plastic plate. Next was a really crummy thin film, like you'd wrap a sandwich in for lunch. This was buckled up in places, and looked like it might show up in the display. I tried to make it be flat, but that made it worse. The way the thing is supposed to work is light bounces around in the clear plastic plate. Some scatters off of the back side white layer and shines through the front. Some gets caught by the front white layer and also shines through the front. The idea is to pipe the light around in the clear plate so that it spreads out evenly, and then lets some of the light leak out the front by scattering from the top and bottom films. So, don't damage or remove the bottom (backside) white film. Don't damage or remove the top (frontside) matt white film. I don't think the crummy, slightly cloudy looking film that protects the top matt white film should be there, but I could be wrong. I took mine off. My display looks just fine, but I can see a little extra brightness at the left and right edges from the LEDs. 73 and GL, Michael, AB9GV ___ 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] K6XX Tuning Indicator
I assembled the SMD kit last evening and installed in in my K2/100. It all went smoothly, even though this was my first experience soldering SMD components. Strong reading glasses help. I had a similar tuning feature on a Yaesu 897. But it never worked very well and was reliable only on strong, clear signals where assistance wasn't needed. In contrast the K6XX works very well on a wide variety of signals. When the indicator is steady, I can pop into my tightest filters and the signal is centered. Moreover, tuning with the indicator is significantly faster than tuning by spot tone/ear. (for my skill level) Thanks to Tom Hammond N0SS for putting the kit together. It is a fun and useful mod. HOWARD W. ASHCRAFT, Jr. W1WF Direct Dial: (415) 995-5073 [EMAIL PROTECTED] HANSON 333 Market Street, 23rd Floor BRIDGETTSan Francisco, CA 94105-2173 MARCUS Direct: (415) 995-5073 VLAHOS Main: (415) 777-3200 RUDY, LLP Fax: (415) 541-9366 ___ 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] LCD and LCD blacklight installation
Do not remove anything from the LCD backlight. The covering on it is to diffuse the light evenly on the back of the LCD. Once the LCD is pressed down on it, any wrinkles or uneveness will smooth out. Remove nothing from either side of the LCD, other than a thin protective flexible film that may be factory installed to protect against scratches. This film is on the front side of most LCDs, but there is usually not any film on the back of the LCD. In a few cases, there may be a thin protective film on the back, and it will have diagonal lines that may be hard to see unless held up to a light. In any case, the protective film will come loose and lift off by rubbing it only with a fingertip or lifting at the edge with a fingernail, and the stiff polarizing filter must NOT be removed from either side of the LCD or the LCD won't work. All recent kits have no protective film on the rear surface, but there is a scratch protective film on the front that should stay in place until ready to install the front panel sheet metal. If you damage the LCD by removing the polarizing filter, please email [EMAIL PROTECTED] for a replacement. Cut the pins off of the original LCD to make it much easier to remove. These parts are not expensive to replace, but it is some work and results in some delay to continue with the kit. Be sure ALL pins of the LCD driver IC U1 are soldered, including pin 1 that is round. The LCD and its backlight have to be removed to correct a poor or missed connection on the IC socket, so be sure the connections are good before installing those parts. See also: http://www.elecraft.com/Apps/Alert15.html -- 73, Gary AB7MY = [EMAIL PROTECTED] Elecraft Technical Support Original Message Subject: FW: [Elecraft] K2 - SN4511 Diffuser Question Date: Thu, 04 Nov 2004 09:45:45 -0600 From: Masleid, Michael A. [EMAIL PROTECTED] CC: elecraft@mailman.qth.net Hello Malcolm, I am a bit confused with LCD backlight diffuser. It has a really nasty looking thin film on top which appears to be protective only then below it another matt white thin film which appears to be attached at LED ends of the diffuser only. Looking at the instructions it appears to say that I should not remove any of these. Help please. Do I remove the top one which looks awful, both or none? My LCD diffuser had 4 layers. The back side was thin as paper and was white. Next was a thick, water clear, plastic sheet, same thickness as printed circuit board material. Next was a thin, soft, white diffusing layer that was only attached at the LED ends of the plastic plate. Next was a really crummy thin film, like you'd wrap a sandwich in for lunch. This was buckled up in places, and looked like it might show up in the display. I tried to make it be flat, but that made it worse. The way the thing is supposed to work is light bounces around in the clear plastic plate. Some scatters off of the back side white layer and shines through the front. Some gets caught by the front white layer and also shines through the front. The idea is to pipe the light around in the clear plate so that it spreads out evenly, and then lets some of the light leak out the front by scattering from the top and bottom films. So, don't damage or remove the bottom (backside) white film. Don't damage or remove the top (frontside) matt white film. I don't think the crummy, slightly cloudy looking film that protects the top matt white film should be there, but I could be wrong. I took mine off. My display looks just fine, but I can see a little extra brightness at the left and right edges from the LEDs. 73 and GL, Michael, AB9GV Juno Platinum $9.95. Juno SpeedBand $14.95. Sign up for Juno Today at http://www.juno.com! Look for special offers at Best Buy stores. ___ 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] Build 100W amp tuner 1st - issues?
Thinking of building 100W amp with tuner box before I start on a K2 - only because I have not built that particular box before and it would be the most interesting part of the project. If I do that, will not having a K2 in hand cause me a problem during the build - i.e. is there any part of the build that requires a K2 to be present for testing etc? Thanks in advance. Tim NZ7C ___ 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] LCD and LCD blacklight installation
If you remove the polarizing filter from the front of the LCD panel by accident, it may be possible to reinstall it successfully. I ordered a replacement, but while waiting for it to arrive, I figured I had nothing to lose by trying and now I have the replacement LCD assembly as a spare. Bob, N7XY ___ 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] PICs re-writable?
Since I now have a pile of old Elecraft PIC chips I got to wondering if they can be erased and reused? I know they have code protection that protects them from being read. But I wonder if they can be erased and reused? I am probably dreaming. :) 73, Mike AB6CV ___ 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] Peripatetic Morse at 0130Z/7040KHz
i will be operating before the Fox Hunt at 0130Z Friday (Thursday 1930 MST). i will be out hiking to a good spot and later trying to contact the Fox with my KX1 and 8 foot whip operating Pedestrian Mobile in motion. It is really hard to get much signal out on 40 Meters with an 8 foot whip, so i need some good receivers out there listening. Paul Colorado Springs w0rw/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] N2CQ QRP Contest Calendar - Nov 4-30, 2004
~~~ N2CQ QRP CONTEST CALENDAR Nov 4-30, 2004 ~~~ HA-QRP Contest (CW - 80 Meters) *** QRP Contest*** Nov 1, z to Nov 7, 2400z Rules: http://www.radiovilag.hu/haqrp.htm#31. ~~ 40 METER FOXHUNT - Every Friday starting on Nov 5, 0200z to 0359z (Thurs 9 PM to 11 PM EST) Info: http://www.cqc.org/fox/index.htm Truffle Hunt - 30 min before Fox Hunt Info: http://fpqrp.com/winter_hunt.html ~~ Ukrainian DX Contest (CW/SSB/Dig) ... QRP Category Nov 6, 1200z to Nov 7, 1200z Rules: http://www.ucc.zp.ua/urdxc2004rules_eng.htm ~~ ARRL Sweepstakes (CW) ... QRP Category Nov 6, 2100z to Nov 8, 0300z Rules: http://www.arrl.org/contests/calendar.html ~~ High Speed Club Contest (CW) ... QRP Category Nov 7, 0900z to 1100z and 1500z to 1700z Rules: http://www.dl3bzz.de/html/hscconte.html ~~ WAE RTTY Contest (Digital)... 100W Category Nov 13, z to Nov 14, 2359z Rules: http://www.darc.de/referate/dx/xedcwr.htm ~~ Japan International DX Contest (phone)... 100w category Nov 13, 0700z to Nov 14, 1300z Rules: http://jidx.org/jidxrule-e.html ~~ OK/OM DX Contest (CW) ... QRP Category! Nov 13, 1200z to Nov 14, 1200z Rules: http://okomdx.crk.cz/ ~~ YO International PSK31 Contest ... 50W max Nov 19, 1600z to 2200z Rules: http://www.qsl.net/yo5crq/PSKrul04.html ~~ LZ DX CONTEST (CW) ... QRP Category Nov 20, 1200z to Nov 21, 1200z Rules: http://www.qsl.net/lz1fw/contest/ ~~ ARRL Sweepstakes (Phone) ... QRP Category Nov 20, 2100z to Nov 22, 0300z Rules: http://www.arrl.org/contests/calendar.html ~~ HOT Party (CW) ... QRP Category Nov 21, 1300z to 1500z (40 Meters) Nov 21, 1500z to 1700z (80 Meters) (HOMEBREW OLDTIME - EQUIPMENT - PARTY) Rules: http://www.qrpcc.de/contestrules/hotr.html ~~ RUN FOR THE BACON (CW) *** QRP CONTEST! *** Nov 22, 0100z to 0300z Rules: http://fpqrp.com/fpqrprun.html ~~~ CQ World Wide DX Contest (CW) ... QRP Category! Nov 27, z to Nov 28, 2400z Rules: http://www.cq-amateur-radio.com/awards.html ~~ Thanks to SM3CER, WA7BNM, N0AX(ARRL), WB3AAL and others for assistance in compiling this calendar. Please foreward the contest info you sponsor to [EMAIL PROTECTED] and we will post it and give it more publicity. Anyone may use this N2CQ QRP Contest Calendar for your website, newsletter, e-mail list or other media as you choose. (Include a credit to the source of this material of course.) 72 de Ken Newman - N2CQ [EMAIL PROTECTED] http://www.amqrp.org/contesting/contesting.html http://www.n3epa.org/Pages/Contest/contest.htm ___ 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] Key clicks.
Thanks to W6UR raspy CW tone is solved,my mistake C91 not mounted. But still having problems with keyclicks. K2 s power amp is not used,permanent in class C,but a rectified RF output from transverter output is fed to V RFDET pin 10 aux I/O When with external PS 2 Volts is applied to pin 10, K2 starts to transmit.!? RF output LED bar follows this voltage,but has unpredictable effect on output I am checking the signal on 28 MHz with a FT101,K2 power amp and transverter switched off . not overdriving the receiver,noiseblanker off With minimum power, key click when key goes up (open) with maximum power clicks when key goes down. hope someone can help!! 73 Nanko PA0V ___ 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] PICs re-writable?
Hi Mike, The chips that have part numbers like 16Cxxx or 18Cxxx are not erasable. Those with an 'F' instead of a 'C' are erasable. The 'F' is for 'flash', an electrically erasable form of memory. Circuits using flash memory can be designed so they are reprogrammable in the field, without disassembling the unit. This makes it possible to get firmware updates over the internet. 73/ Bob - W5BIG - Original Message - From: Michael Studer [EMAIL PROTECTED] To: Elecraft elecraft@mailman.qth.net Sent: Thursday, November 04, 2004 1:37 PM Subject: [Elecraft] PICs re-writable? Since I now have a pile of old Elecraft PIC chips I got to wondering if they can be erased and reused? I know they have code protection that protects them from being read. But I wonder if they can be erased and reused? I am probably dreaming. :) 73, Mike AB6CV ___ 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] List of menu commands, queries
Is there a complete, in one file, list of all K2 commands and queries including the PA, SSB, DSP, etc modules? Thanks for any info. Steve, AE2G K2 s/n #377 ___ 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] Mirror of LA3ZA Unofficial Guide to Elecraft K2 Modifications
The LA3ZA Unofficial Guide to Elecraft K2 Modifications on http://www.qsl.net/la3za/K2/mod.html is now mirrored on http://www.qslnet.de/la3za/K2/mod.html Thanks to DL5SFC for providing the web-space, and to the German ham whom I unfortunately have forgotten the name of, who first suggested this site. (Viel Dank!) 73 Sverre LA3ZA http://www.qsl.net/la3za/ ___ 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] Build 100W amp tuner 1st - issues?
OK - I got it (from about half a dozen very nice folks!). Been awhile and I forgot completely that you cannot even buy the amp buy itself unless you have a K2 already - plus it does require interactive testing. Thanks everyone. 73/Tim NZ7C ___ 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] Build 100W amp tuner 1st - issues?
Hi Tim! Yes. The KPA100 and most of the other accessories to the K2 communicate with K2 on auxbus. The KPA100 need that line and some other lines as well to be tested. There is also a test of the KPA100 that has to be done about midway in assembly that need the K2. I suggest you download the manuals from elecraft webpage to se what your up against. I just builded the KPA100 and wow!! have I had fun since. Some minor problems , but soon to be taken care of. 73 de LA1PHA Tom - Original Message - From: [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Thursday, November 04, 2004 6:22 PM Subject: [Elecraft] Build 100W amp tuner 1st - issues? Thinking of building 100W amp with tuner box before I start on a K2 - only because I have not built that particular box before and it would be the most interesting part of the project. If I do that, will not having a K2 in hand cause me a problem during the build - i.e. is there any part of the build that requires a K2 to be present for testing etc? Thanks in advance. Tim NZ7C ___ 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] List of menu commands, queries
Steve: Try this, their is also one for sale, I believe. http://www.elecraft.com/Apps/K2_QRC_8x8.pdf Tom WB2QDG K2 1103 Does the name Pavlov ring a bell? -Original Message- From: Barry, Steve [EMAIL PROTECTED] To: elecraft@mailman.qth.net elecraft@mailman.qth.net Date: Thursday, November 04, 2004 4:05 PM Subject: [Elecraft] List of menu commands, queries Is there a complete, in one file, list of all K2 commands and queries including the PA, SSB, DSP, etc modules? Thanks for any info. Steve, AE2G K2 s/n #377 ___ 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] Peripatetic Morse Results
i think i hit the trail late but i got to work many stations.. W0CH in MO, KT0NY Tony in MO, K4FOA Tony GA, W6RXH Rob CA K3ESE Lloyd (The Fox) MD 0305Z It started to get a bit cold 35F and my power dropped off to 2 W at the end, probably because my NiCads got cold. i was using my KX1 and 8 foot whip operating Pedestrian Mobile in motion. i also had a capacity hat on the whip and a drag wire counterpoise. Thanks for all who were listening... i was amazed at how well i was able to get out...Coast to Coast with an 8 foot whip on 40 meters. Paul w0rw/pm Colorado Springs ___ 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
