[Elecraft] Elecraft balun
I want to use my Elecraft BL-1 1:1 balun on field day. The balun would serve as center insulator, but the coax line plugged into it is a phasing line. Here is my question: Will the windings on the balun, introduced between the antenna and the phasing line, effectively increase the length of the phasing line? I think it will, and I am wondering by how much to shorten my phasing line to account for it. I think the windings are six to seven inches in length and would imagine the velocity factor to be high. 73 Fred - kt5x K2 # 700 ___ 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] relay removal...
OK, HOW I DID IT !!! First, I made a tool, a heat shield. I made this out of a piece of tin from an Altoids box. I used a set of relay holes on the circuit board to mark on this piece of tin the precise location of all ten holes with a needle. Then I put the piece of tin on a piece of wood, I wanted a soft backing, and I punched the holes with a nail. I made the holes big enough for the soldered relay pins to poke through the holes. Further more, because I punched the holes with a nail into wood, the wood side of the tin was pushed out around each hole. I used tin snips to cut out the rectangle larger than the relay area, forty five cuts in the corners of the shield, folded the sides up perhaps 20 degrees. What I have made here is a heat shield. The poked through metal from punching holes holds the heat shield up off the PC board. But the soldered pins all show on the top side of the heat shield. The heat shield spread out more than a quarter of an inch beyond the pins. Now, I placed the PC board across two piles of books so that the offending relay is below. I gently gripped the relay with a vice-grips with a piece of leather between the vice-grips and the relay. the pile of books was tall enough that the vice-grips hung down between them, putting weight pulling on the relay out of the board. Now. I took a hand held mini-butane torch, cost fifteen dollars at the local hardware store, and flamed ALL the pins at once. In seconds, the vice-grips pulled the relay out of the holes. Relays all fine. PC board fine. Piece of cake. E-mail me if you want a picture of the heat shield. Good luck, Fred - KT5X K2 # 700 ___ 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] relayremoval
Yes, I removed seven of them. I dunno if I can explain how I did it, but I will try if you still want me too! I still have the tool I used, and if you are pateint enough and would return it, I could mail it to you, but with no gaurantees you can pull off what I did!!! 73, Fred - kt5x K2 # 700 ___ 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 registry...
Wonder if Elecraft has considered a "rig Registry" page on their site. owners could register by serial number, with call sign, options, perhaps comments such as best QRPp DX. Anyone who didn't want to 'register" their rig, need not. Might be fun to see who owns them, to be able to search by a call sign to see if your friend has one, to print it out and see how many of them you have or can work. Just a thought in case there is interest Merry Christmas! Fred -kt5x K2 # 700 ___ 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] BUG NIGHT
New Year's Eve is traditionally is a time to review the year past, and wax nostalgic. For some years amateur radio ops have dusted off their straight key and put it on the air. But what about other, perhaps more challenging antique keys of historic and nostalgic value? Semi-automatic keys, bugs, have also been coming out of hiding on this night. Each year more and more have participated in SKN (Silent Key Night) with these keys. Last year such rare pieces were heard as: a Dow Universal Rotary bug, a 1936 McElroy bug, a Vibroplex Upright, a Speed-X 501, a Vibroplex Midget, a Vibroplex Double Lever, a blue Blue Racer from 1917, a right-angle bug known as a Codetrol, a Melehan Variant. There are no "rules," no limitations, no points, no exchanges. Just have fun sharing stories about the history of and how you came by your nostalgic key. No need to worry about your fist, we are all just doing what we can honoring something from our past. Hope to hear you, and best wishes for your new year! Fred - KT5X ___ 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] 8R - TNX replies!
TNX info! 73 Fred ___ 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] 8R
Please forgive my ignorance... question about the 8R line: What voltage is high? In rcv, is 8R high or low? 72, Fred ___ 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] KPA power out
Had never checked the power out for my KPA-100, so did so. Took the KAT-100 out of the chain for the test, using dummy load. Startled by the results: band K2 KPA-100KPA-100 thru ATU no ATU 160 --- 10.7 -100 - 100 80 --- 15.0 -100 - 100 40 --- 14.1 - 90 - 90 30 --- 14.2 - 80 - 80 20 --- 14.5 - 50 - 50 17 --- 14.4 - 60 - 60 15 --- 14.5 - 60 - 60 12 --- 14.1 -100 - 40 10 --- 14.7 -100 - 25 Dunno what to make of it. 73 Fred kt5x ___ 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] 255 with K2
255 countries with the K2, DXCC on 10 through 40, 38 on 80, a dozen including intercontinental on 160... many of them were during the sunspot peak in 2000 which does make it easier! I think W9KNI's efforts are quite a bit higher. Mojo to all ! and 72, Fred KT5X K2 # 700 aka W5YA on 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
[Elecraft] K2 CW speed
I enjoy copying CW up to about 60 wpm, then problems. And I can offer a theory for why. The mind, not the ear, has a built in echo suppressor. When the ear hears the same sound soon again, it sends its message to the brain, but the brain interprets it, if the time between sounds is very short, as an echo. the most common brain, I will refrain from saying normal but I am thinking it, interprets the new message arrival as the same message, only louder. so the arrival of the echo causes an interpretation of louder, NOT a new character or dit. Were it not for this, what you hear in a typical indoor room (or cave) would be unintelligible. this is known as the Haas Effect, and you can find it on the web, and find examples of it. they will play a melody in one of your speakers, and delay the same sound to the other speaker 5 ms, and you, I should say, I, can not hear a thing coming from the second speaker, but if I put my finger on the speaker I can feel it making sound. this echo effect impacts hearing, or I should say, interpretting sound, up to about 1,500 cycles. High frequencies don't echo very much, and so the brain does not have an echo suppressor for them. i find I can not copy above something like 56 wpm, 59 on a good day. BUT, if I readjust the radio to receive the CW above 1,500 cycles (not pleasant), then I CAN !!! Anyone who can just copy at 100 wpm has a hearing/brain problem. their echo suppressor doesn't work. What they hear, day in and day out, is very, very different from what most people hear. And they probably don't realize it. I feel confident saying, be happy you are stuck at 60 wpm. 72, Fred KT5X K2 # 700 ___ 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] QSK CLICK
Seems like everyone's radio is a little different. I have done the sidetone mods on my K2 and the tone quality is nice. When I added the DSP a nasty pin-prick click occurred at the MAKE of QSK keying. This is in monitoring only, it is not on the air. This is much more pronounced with a pair of AKG K-100 hi fidelity headphones than with my old Heil pro-set, but the pro-set is not 35 ohms and audio with them is well down. I did the AF pot mod, and that greatly improved audio artifacts which were somehow accentuated by the DSP. With the RF gain down, the radio is dead quiet until the AF gain is nearly all the way up. I have the new sigmoidal keying mod, it had no effect on this click. I tried both Lyle's mod for slowing the mute line, and Wayne's mod. Neither have any effect what so ever. the time duration of the mute keying has no effect. The click occurs at the make of the QSK, does not occur if the QSK does not drop out between characters, so the source is not the sidetone itself. I put a .47 capacitor across the headphone to ground, no effect what so ever. I have the low-pass filter from the KAF2 installed with the DSP. The click is unchanged before and after that mod. The click changes amplitude by varying the AF pot, a clue. The click is present when the radio is in test mode and not actually keying the transmitter. there is a very similar sounding click that occurs when the radio is turned on but that click is louder. There is a very similar click that occurs when I hit the band change button. If I hit the band change button and change several bands before allowing the relays to change, the little pin-prick click occurs only with the first touch of the band-change button. The tiny pin-prick click does not occur for the operation of most buttons, but ialso occurs with the NB button at each touch of it. It also occurs at the break, not the make, of each operation cycling the pre/ATT button. Sounds exactly the same for each of these cases and the keying, and for each, the amplitude of the click varies with the AF pot adjustment. The click sounds like the kind of click you get when you apply a small DC voltage to a pair of headphones. I don't think it is a timing issue. I think that somewhere a capacitor is charged up and it is unloading its charge into the headphones at the make of the QSK. Just maybe there is a place where I have an incorrect value like a 103 instead of a 104 or the opposite. somebody can figure this out!!! 73 Fred KT5X K2 # 700 PS I rcv the digest so please copy me directly your thoughts! ___ 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] wireless headfones?
Has anyone tried wireless headfones such as these with their K2? http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&product%5Fid=33-1219 I am curious how they handle being around a transmitting ham radio. The idea of being able to walk into the kitchen to refill a cup of coffee without losing half the QSO is appealing... tnx, Fred kt5x ___ 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] bug posting
Story of the four-leaf clover, meant to say N6WU whose name was KR and who is (SK), accidently said N6KR in QSO and sk, not so) SRI any confusion, consternation, 73 Fred KT5X ___ 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] BUG night - new year's Eve
Straight Key Night? Bah, humBUG Brief reminder that in keeping with tradition, SKN New Year's Eve has been transmuted into BUG Night (or perhaps "Any Old Key Night," as in, isn't the idea to just have fun and meet people?) for those with either sufficient skill and daring or the hutzspah necessary to over-come the lack there-of. The tradition began on the New Year's Eve 2000 when KT5X boldly broke with tradition and put a 1917 Cloverleaf blue racer on the air. His CQ was answered by KE5C who was using a 1923 Cloverleaf blue racer. Soon the QSO was broken into by WD9FJL who by shere chance was responding to the bug sent CW using HIS 1919 Cloverleaf blue racer! This three-way QSO was interrupted by N6KR (SK) who was using, yup, a 1918 Cloverleaf blue racer --- A Four Leaf Clover QSO was created. A few days later, KT5X received a QSL from a W6 who said, "I heard you guys and tried to break in with my 1921 Cloverleaf blue racer, but no one could hear me." But of course not. Who ever heard of a FIVE leaf clover, I ask you??? This activity is no way intended to be a contest. IJust enjoy New Year's Eve. Folks are encouraged to use a variety of old keys and bugs, and tell stories about them. It is nostalgic. It takes skill. There is no starting time. There is no ending time. Gathering frequencies are 14.025, 7.025, and 3.525, plus or minus. Last year Russ, WA5Y, (a serious collector of old keys) put some really rare ones on the air. He used a 1918 Midget, 1917 Upright, and a 1946 Melehan. what astonishing old key will you come across? Please do distribute the invitation far and wide. And don't forget that the old coastal station, KPH will be QRV that night as well, using the call, W6KPH. 73, Fred KT5X K2 # 0700 ___ 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 & 160 M test
It is astonishing to me that the K2 with the teeny-tiny 160 mtr board can do what it does on this band. It hears so well, and is so immune to IMD from strong stations sometimes encountered on top-band... Friday night I operated K2 QRP as W5YA, High Desert QRP Club.. operated only fifty minutes according to the log, totaled 47 contacts in 27 sections, never tried calling CQ. K6SE with his K2 was BOOMING in. I think skip was short, but those signals were solid with relatively low noise. Most stations heard over S-5 I could work QRP. Saturday night I operated K2-100-AT as KT5X. I had no trouble maintaining a run frequency with 75 watts to log a 93 QSO hour, (22 in ten minutes), then some S&P to total of 148 Q's in 50 sections in two hours. Conditions did not seem great as heard no Carribean stations at all. Wasn't awake during European grey-line, so dunno if might have heard from them. My top-band antenna is a 50 foot top-loaded tower tuned first with a BIG component homebrew tuner adjusted to band center, then tweaked with the KAT-100. 73 FD New Mexico ___ 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] torid winding
I've never gotten so "organized" as to make a jig for winding toroids. Fred, you may have talked me into it, Hi! Ron AC7AC __ Ron, OT, I was amazed how easy this approach makes the process. It becomes hands free at any moment you want to stop and do something else, too. 73 FD kt5x aka 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
[Elecraft] things to sort kit parts
I sort kit parts completely differently. I group parts, and tape one lead, bunches of capacitors of the same value all together, I scotch tape them to a piece of paper. Then I write the value and the part numbers on the piece of paper next to them. I put the same type of part on the same page. To "clean up" after a work session, I just pick up the pieces of paper and stack them in the kit box and go away. this system provides a triple check as to the part, its value, and the part number with the directions. Parts are EZ to find, everything is labeled, one could use three holed paper and place the pages in a three ring binder for even greater convenience to instant clean-up. Visual... I have a big swing-arm magnifier with a flourescent bulb around it and I use this for observing part installation. I also have a clip-on ten times magnifier that I bought for ten bux at the fly fishing store. I flip this down to see the tinest inscriptions on little capacitors, then flip it back up when doing something else. I wear contact lenses these days, but I wear reading glasses when working and put the ten times magnifiers on those, which I think means they turn out being 15x times magnifiers ;-) Cake. cheaper, simpler than mag-eyes, tho mag-eyes would replace the big swing-arm illuminated magnifier that I have grown accustomed to using because I already had it for fly tying. this 15x system is wonderful for checking solder joints on the board, wow, I can see every tiny flake of rosin, even the slightest inconsistency in any solder joint. Toroid winding. VERY easy. I took a small wooden dowel and sharpened it, not all the way, with a pencil sharpener making it into a cone but no sharp point. You could use a pencil and not sharpen it to a point. I cut a small groove the length of it. This I support vertically in a vise clamped to my desk. The toroid goes over the dowel. The wire is threaded down the groove. The dowel holds the toroid, allows one to easily pull the windings tight, in fact you can pull it too tight (too tight is when you break the toroid), pressing the toroid down on the dowel squeezes the windings tight against the toroid on the inside, too. Between putting on a winding, it is hands free, the dowel holds the toroid, wires tight, everything. It is very easy to manipulate the windings to make them machine-like evenly distributed around the core when the core is over the dowel. The toroid over the dowel also holds the thing for tinning leads, giving both hands for holding the soldering iron and the solder or stetching out the subject wire. I always work on the down hill wire. i start close to the core and I can get very close with everything held this way, and slide the solder blob down the wire away from the core. I flip the toroid over to get the other wire. EZ. Making the toroids is fun when you have this set up. I make all the toroids at the same time, before I start building the kit, and I tape them to a page and label them. 73 Fred kt5x ___ 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] external keyer
This is the external keyer I have chosen, and very pleased with it... http://jacksonharbor.home.att.net/ik2.htm More features, more memory, and lower cost than anything coming close to it. I have no financial relationship with them. 72 Fred kt5x ___ 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 display... new kit???
thinking of what would be fun... How about an outboard unit associated with the K2 that delivered a pan-adaptor replicating display. I haven't a clue how complex such an endeavor might be, WATSA Fred kt5x ___ 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] tone
>>Does anyone else notice that many CW signals these days are somewhat less >>than T9. I was beginning to believe it was to do with the DSP but a tune >>up the band would find another similarly strong signal singing pure. > >Yes, I am currently working the WAE contest and hearing a fair number of T6 >signals. Dunno if it is "on purpose" or accidental. Some contesters/DXers seem >to want their signal to stand out, even if their tone stinks. I think they're >misguided, >but what do I know? > >Jim Brown K9YC this tone question may not be the transmitter in many cases. I was listeing to WAE last night and noticed not just Europeans, but U.S. signals, but from the north, had odd tones. some were from stations I know who have clean-as-a-whistle signals. I think there was aurora even if not enough to see. 73, Fred kt5x ___ 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] carrying cases and ESD
My ESD problem with the K2 and KPA followed a severe shaking over washboard roads on a voyage to remote Chaco Canyon. The K2 was riding in a Lowes foam surround carrying case. I can not prove, but I do not think the ESD that zapped the directional couplers came from an antenna. It happened immediately upon reconnecting the K2 to the KPA (which had been left entirely disconnected and which worked perfectly before the trip). for me, at least, the moral of the story, I now have static free wrapping for the K2 when it rides in the foam fitting case. Maybe I am wrong, but can't hurt. Maybe this report will also protect others from the frustration. 73, Fred KT5X ___ 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] directional diodes 1N5711
First, thank you to those who responded and taught me the difference between these several types of diodes. Now, to share an experience, actually, several. three times in five years have had my radio go awry on transmit, and all three times the cause was the same; directional diodes in the SWR bridge. Specifics of the symptom vary because, for example, this time in the K2, the FWD diode fried infinitely open in both directions, while the REF diode fried shorted. In the KPA both diodes fried leaving 1.5K in both directions. Specific details of radio behavior were quite different, but general behavior, loss of the power control on the K2, HI CURR report from the radio trying to run all out (since the bridge is reporting inaccurately what power is going by it), unable to use the auto-tuner, inaccurate SWR and power out reporting. KAT-2 ... not a recommendation, just a comment. I mount the diodes on the underside of the circuit board. This puts them on the outside of the KAT-2 module which makes it possible to replace them without any disassembly. KPA ... I haven't yet thought of anything clever for making these diodes more accessible, would be nice. Kirby, who really does know, suggests putting a 1 uh choke at the input of the directional coupler to protect these diodes. Once that is done, however, one will no longer be able to check the viability of the diodes while in the circuit since this will look like a short to ground to a DVM. I am sure this problem occurs more or less frequently depending upon where one is located, and what kind of antenna. For example, I have never lost these diodes when using my forty meter full wave loop which puts the antenna at ground potential. Lost them now after putting up a G5RV flat top which seems to have no trouble gathering static even in a clear sky. The KPA has a 100 uh choke across the antenna jack. That did not protect the diodes in the KPA, dunno why. I am sure it protects the finals. P.S. Had a friend lose K2 finals to ESD. Is there any reason why one couldn't put that 100 uh choke across the antenna jack on the K2 f??? Thank you, and 73 Fred kt5x ___ 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] 1N5711 diodes in directional coupler
These are used in the directional coupler of the K2, KPA, and KAT-100. I have lost these to ESD more than once. Several questions; Gary says that 1N5711's give more accurate readings than lessor diodes such as the 1N4148... question; how much more accurate, and how critical is this accuracy? Would the 1N4148 be more, less, or the same susceptability to ESD? I don't have any 1n5711's in my stock, but I do have some very fine PIN diodes, labeled, MA 47 266. Are these acceptable substitutes for 1N5711's? Would they be more or less accurate in the directional coupler? Would they be more or less susceptable to ESD damage? Thank you! Please "reply all" as I only get the digest and won't see your reply until tomorrow unless also sent to me directly!!! If the PIN's are acceptable substitutes would like to install them today. 73, Fred - kt5x K2 # 700 ___ 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] Field Day W5YA
Why subjecting oneself to such exhaustion is fun, I don't know, but it IS !!! first, thanks for QSO's from so many of you guys, and the many greetings and good wishes. W5YA, High Desert Wireless QRP Club is a small New Mexico club of a coupla OT's dedicated to helping new comers learn and use CW. Most of our members are enthusiastic and (relatively) young beginners. But field day belongs to us OT's. Steve and I have 90 years of CW experience behind us. We do FD as a class B two-man team. Aging but still youthful, we MUST come up with ways to deploy effective antennas with little energy. Body blows: the first hour produced over 60 QRP QSO's, we were a happy team, when the computer keyboard locked up. It took us half an hour to resolve it, but somewhere in the battle, the log was lost. I am counting on it being recoverable! The second blow was even worse, a lightning storm moved in, 40 mph winds tried but could not hurt our little masts and beam, but it did ZAP Steve's K2. The radio works fine until it tries to transmit, so maybe just the finals zapped. Steve is hand carrying it to Phoenix Tuesday, and we are counting on Gary helping him restore his beloved radio. Come on Gary! We put the back-up K2 on line and returned to work. Recovery: How a QRP K2 can produce a series of sixty plus hours I don't know, all I will say at this point is we have a lot of QSO's in the 1B-2 battery log. thanks again for a great radio! 72, Fred - KT5X Steve - WD9FJL aka W5YA / fd ___ 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/elecraftHelp: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Field Day
de W5YA /qrp, High Desert Wireless QRP Association Our best wishes for a great time and many QSO's to all who will be enjoying field day this weekend. we thank elecraft for providing the best field day radio we have ever used (and we have used a few over the past fifty years ;-) Pardner Steve and I will deploy K2's for our fifth B category field day together. Our location is on a ridge that is about 9,000 feet altitude and stands about 500 feet above surrounding terrain. If Murphy over takes us, we will sip tequilla and fly fish for trout! Maybe we'll do that anyway GL and hope to work you! 73, Fred - kt5x, and Steve - WD9FJL K2's # 700 & 1497 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net http://mailman.qth.net/mailman/listinfo/elecraft You must subscribe to post. Subscriber Info (Addr. Change, Unsub etc): http://mailman.qth.net/subscribers.htm Elecraft page: http://www.elecraft.com
[Elecraft] RF POT (K2)
My audio cuts out momentarily whenever I rotate the RF gain pot. I suppose the RF gain pot is generating noise (dirty) and that noise is triggering the AGC. I do find that if I rapidly rotate the knob back and forth through perhaps ninety degrees a dozen times or more, the problem is temporarily reduced. 1) Do others have this problem? 2) what is the recommended solution? I have never done the AF pot mod because it is not noisy at all. tnx, fred kt5x K2 # 0700 Palm # 0070 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net http://mailman.qth.net/mailman/listinfo/elecraft You must subscribe to post. Subscriber Info (Addr. Change, Unsub etc): http://mailman.qth.net/subscribers.htm Elecraft page: http://www.elecraft.com
[Elecraft] G4ZPY paddle and another
Yes, Gordon is producing keys again. They are very nice for sure. I had a VHS for 15 years, but recently sold it. I bought a hand made key by Alberto Frattini, I1QOD, for about the same price and like it better. Alberto, I understand is the European High Speed champ and a retired machinest. He also makes a miniature version appropriate for QRP and travel, though i haven't seen it, and a bug! To my knowledge only three of his paddles are in the US now. Mine is serial # 0055, "double nickel." You can write Alberto at < [EMAIL PROTECTED] > He doesn't have a website. I would be happy if you mentioned my call sign if you write him, but please know, I have no connection, financial or other wise, just passing along another source of outstanding hand made paddles. e-mail me directly for a pix if you like. 72, Fred kt5x trustee, W5YA, High Desert Wireless QRP Ass'n ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net http://mailman.qth.net/mailman/listinfo/elecraft You must subscribe to post. Subscriber Info (Addr. Change, Unsub etc): http://mailman.qth.net/subscribers.htm Elecraft page: http://www.elecraft.com
