[Elecraft] Date/Time of Elecraft QSO Party EQP 2005?
Hello, planning to take part in the EQP 2005 from DK0SU again -- anyone knowing the official date/time when EQP 2005 takes place? Any changes within the rules compared to last year? TNX, 73 Thomas, DF7TV -- Thomas Martin, Stuttgart, Germany http://www.qsl.net/df7tv http://www.qslnet.de/member/df7tv ___ 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] Is it possible to connect a amp to the K2
I've been using my K2/100 to drive my Ameritron AL-811H for a couple of years, and it works great. Initially, before I had the KPA100, I used the K2 to drive the amp to about 200 watts or so, and built up the simple single transistor keying circuit described in the Elecraft archives, to key the amplifier. That worked fine. Later, when I built the KPA100, I used the high voltage output keying line to drive the amp, and that worked fine as well. Still later, after getting tired of listening to the clanking of the relay in the AL-811H, I bought the Ameritron QSK-5 QSK-T/R unit, and that was the best solution of all. Not only is there no noise from the relay in the amplifier, but the tubes in the amplifier are cut-off so no plate current flows until just a couple of milliseconds before the rf is delivered, and it returns to cutoff within a couple of milliseconds after the rf has finished. So, the amp runs cooler, and is absolutely quiet except for the almost inaudible 'tick' of the reed relay inside the QSK-5 unit. Having said all that, I don't really use the amplifier very often, but when I do, the combination works great. 73, Dale WA8SRA ___ 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] Is it possible to connect a amp to the K2
Thanks very much Eric. I've been off the reflector for a couple of days. I believe the keying voltage of the 220 is around 120V DC+. I'll give it a shot. Todd, WA7U - Original Message - From: Eric Swartz - WA6HHQ, Elecraft [EMAIL PROTECTED] To: Todd Gahagan [EMAIL PROTECTED] Cc: n2uz [EMAIL PROTECTED]; elecraft@mailman.qth.net; Tom Hammond [EMAIL PROTECTED] Sent: Wednesday, January 05, 2005 3:43 PM Subject: Re: [Elecraft] Is it possible to connect a amp to the K2 The K2/100 already includes a high voltage output keying line for linear amplifiers on its KPA100 back panel. It can handle up to 200V and 1A max. Most amps with -positive- keying voltages can be T/R keyed from the K2/100. I think the SB-220 uses a positive voltage so it should work. The few amps with negative keying voltages will need a relay or solid state buffer between the amp and the rig. See page 59 of the KPA100 manual for the key out line specification, and page 53 for the 8R Hold menu option that provides a keyout hold feature to prevent amplifier relay chatter on CW. 73, Eric WA6HHQ Elecraft Todd Gahagan wrote: I would really be interested in this also Tom. Been going to drive my SB220 with the KPA-100, K-2 combo for some time. ___ 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: Hexakey
If the Hexkey is the same design as the Mercury paddle, then I second the endorsement. I have one of the original Mercury paddles made for me by Steve, N2DAN, back around 12-15 years ago. Having done CW since the 60s, I have used a lot of paddles and I have to say there is nothing like the Mercury. I am amazed at the low price of the Hexkey. I paid around $400 for mine, but at that time Steve was custom making them in his garage on a make-to-order basis. Mine also has the chromed square base. Since I was almost exclusively a mobile op, I figured that price was nothing compared to what many people put into towers and such. I looked at it more like a precision musical instrument than a piece of equipment. Mine has been through an incredible amount of heavy usage. I used it for years doing CW mobile. I even was accepted as a CFO member while using that thing mobile. One time my car was stolen out of my driveway and stripped for parts in the nearby city. Everything of value was gone but I found my Mercury under the front passenger seat. Perhaps it was my call letters engraved on the paddles that discouraged them from fencing it. I run mine with contact spacing so thin that you can't even put a piece of paper between them. After all this time, the action is getting just a bit sticky, (based on the contact not releasing, not on feel). Also, the chrome surface needs cleaning and some areas are hard to get at with the thing assembled. I am very hesitant to take it apart, since I am not much of a watchmaker/machinist. When I bought it, Steve told me that the lubrication on the bearings was something military, designed to not dry out for many years. I wonder if anyone here can advise me on what to do. I don't mind taking it apart if I have someone to whom I can ask questions. (Hmmm, I wonder if I should take it to a watch repairman?). Anyway, I would recommend the Hexkey to anyone anytime. At that price, it can't be beat. It is a marvelous design. It is a rugged as a Sherman tank and as precise as a surgical instrument. Dudley - WA1X Message: 5 Date: Wed, 5 Jan 2005 09:35:20 -0500 From: Michael Babineau [EMAIL PROTECTED] Subject: re: [Elecraft] Hexakey? To: [EMAIL PROTECTED] Cc: elecraft@mailman.qth.net Message-ID: [EMAIL PROTECTED] Content-Type: text/plain; charset=US-ASCII; format=flowed Chris Wagner [EMAIL PROTECTED] wrote : Howdy, I fancy they paddle - but have a BY-1 at home. Is the Hexakey considerably better than a standard Bencher paddle? Tnx es 73, Chris Kf6vci Boy is it ever! I have used a BY-2 for almost 24 years. My Hex key arrived from Elecraft on Chrismas Eve (thanks guys) and all I can say is WOW. The BY-2 is going to get put on a shelf for the next 24 years. This is a precision instrument. It is very heavy and stays put without any sort of pad under it. As some people have noted the adjustment screw threading is a tad bit coarse for such a precision instrument but it appears that this part of the key uses BY components. It doesn't detract from the key ... it just means that it takes a little bit longer to get the settings exactly where you want them, but my guess is that you will never need to readjust them once they are set to your liking. The actual arm and bearing mechanism appears to be identical to the Mercury paddles. I think that Elecraft / Bencher have a real winner with this paddle. It offers high end performance without the sticker shock or the Mercury or some of its competitors. BTW, for anyone willing to part with a lot of money, I noticed that Morse Express is now selling the Bencher Mercury paddle as well. Michael VE3WMB ___ 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] Power Amplifier for K2
For those who think life is too short to do QRP all the time, here is what I did. I made an amplifier similar to the amp in Communication Concepts web page, specifically the Motorola EB-104 Amplifier (kit!) that uses 4 MRF-150 transistors. See www.communication-concepts.com/eb104.htm. I use 48 volts supply voltage and keep the 48 volts on all the time. I use the 8R line of the K2 with the keying circuit mentioned several times in this reflector. I built a set of low pass filters for the bands I operate, that is 40M, 20M and 17 M. I get about 500 watts out of the amplifier after the low pass filters and the relays. I use a 2 element wire beam up 35 feet so I don't have a huge signal but the audio compression in the K2 really helps a lot. It sure is nice to break a pileup on 20M phone with one call when the band is open to Africa!! If anyone needs more info, please e-mail me for more details. 73 Rich, W3ACO ___ 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 or K2/100 + amp, QSK?
Been following the thread on running an external amp with the K2 or K2/100. I was wondering how connecting an external amp changes the QSK behavior. Or, are people only using an external amp for SSB? Thanks, John Pfeifer - KL0WN ___ 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] World record with a K1 TXing .0000406 watts!!
WOW! http://www.eham.net/articles/9982 73...George...GI4SRQ ___ 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 or K2/100 + amp, QSK?
On Thu, 06 Jan 2005 06:01:33 -0900, John Pfeifer wrote: I was wondering how connecting an external amp changes the QSK behavior. When used with the two TenTec amps as described in my post it's full QSK (and I'm sure that the other TenTec amps will also behave that way). The only way you know the amp is there is that you get more responses to your CQ's, and the guys calling you are more often closer to your noise level. :) Jim Brown K9YC ___ 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 Jan 7-31, 2005
~~ N2CQ QRP CALENDAR JANUARY 7-31, 2005 ~~ 40 METER FOXHUNT - Every Friday 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 ~~ The World QRP Federation (WQF) QRP Party (All) ... QRP Contest! Jan 7, z to 2400z Rules: http://ruqrp.narod.ru/wqf_e.htm ~~ North American QSO Party (CW) (100w max. QRP Entries Noted) Jan 8, 1800z to Jan 9, 0600z Rules: http://www.ncjweb.com/naqprules.php ~~ ARRL RTTY Roundup ... =150W Category Jan 8, 1800z to Jan 9, 2400z Rules: http://www.arrl.org/contests/calendar.html?year=2005 ~~ DARC 10-Meter Contest ... =100 W category Jan 9, 0900Z to 1059Z Rules: http://www.darc.de/referate/dx/xedczr.htm ~~ 070 Club PSKFEST Contest ... QRP Category Jan 15, z to 2400z Rules: http://www.podxs.com/html/pskfest.html ~~ Michigan QRP Club Contest (CW) ... QRP Contest! Jan 15, 1200z to Jan 16, 2359z Rules: http://www.qsl.net/miqrpclub/contest.html ~~ LZ OPEN CONTEST (CW 80M/40M) ...QRP Category Jan 15, 1200z to 2000z Rules: http://www.qsl.net/lz1fw/lzopen/index.html ~~ North American QSO Party (SSB) (100w max. QRP Entries Noted) Jan 15, 1800z to Jan 16, 0600z Rules: http://www.ncjweb.com/naqprules.php ~~ Run For The Bacon (CW) *** QRP Contest *** Jan 17, 0100z to 0300z Rules: http://fpqrp.com ~~ NAQCC 80-METER SPRINT (CW) *** QRP Contest *** Jan 21, 0130z to 0330z Rules: http://www.qsl.net/kb3lfc/sprint_0105.html ~~ ARRL January VHF Sweepstakes ... Low Power Category Jan 22, 1900z to Jan 24, 0400z Rules: http://www.arrl.org/contests/calendar.html?year=2005 ~~ CQ WW 160-Meter DX Contest (CW) ... QRP Category Jan 29, z to Jan 30, 2359z Rules: http://www.cq-amateur-radio.com/awards.html ~~ UBA DX Contest (Belgian) (SSB) ... QRP Category Jan 29, 1300z to Jan 30, 1300z Rules: http://www.sk3bg.se/contest/ubac.htm ~~ 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] Elecraft K1 Record Set/13 Million Miles per Watt
Recently N2XE ran an 80 meter beacon at very low power levels. I listened but never heard him. I have participated in previous beacon tests on 10 mHz from AA4XX and extremely low levels of power and software that would decode signals below the noise level. However, the N2XE tests were CW not requiring processing. (Ken N4SO) From: Joel Harrington [EMAIL PROTECTED] Reply-To: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: Amateur Radio Set New World Record, 13 Million Miles per Watt Date: Thu, 06 Jan 2005 08:38:31 -0800 Amateur Radio Set New World Record, 13 Million Miles per Watt: from The Beacon Tribune on January 4, 2005 Amateur Radio Set New World Record, 13 Million Miles per Watt: January 2, 2005 New London, NC Bill Tippett, W4ZV, of New London, NC correctly copied code word OMAHA from the N2XE beacon transmitting with a peak carrier power of .406 watts at 3.5455 MHz on the 80 meter Amateur Radio band. Bill confirmed reception of the beacon at 2328Z, January 2, 2005. The precise distance between the two stations is 546.8 miles, establishing Bill's record reception distance at 13,467,980 miles per watt. Tippett used a Ten Tec Orion Transceiver with a 1000 foot Beverage antenna (named after Dr. Harold Beverage who invented it in the 1920s). The N2XE beacon transmits from an Elecraft K1 (heavily attenuated) using an 80 meter off-center fed dipole, 45 feet AGL (above ground level). The beacon peak carrier output was measured using an Agilent 8563EC Spectrum Analyzer at 40.6 uW (40 millionths of a watt). The beacon transmits a unique code word each evening. Receiving stations are required to correctly copy the code word in their report. The word is published the following morning. The N2XE Beacon Project was started in December, 2004 by Paul Stroud, AA4XX, Raleigh, NC and John Ceccherelli, N2XE, Wappingers Falls, NY with the goal of having a little fun and to go where no diminutive signal has gone before. Beacon times and frequencies are posted daily on the QRP-L reflector www.kkn.net/archives/html/QRP-L. Tests will continue on 160, 80 and 40 meters through the end of February 2005. Commenting on his remarkable success, Bill said I've spent 25 years on 80 160 listening to below noise level signals. There are at least three factors to this stuff: Antennas with good signal to noise like Beverages, a good receiver and the knowledge to use it and an operator with good ears and knowledge of propagation--not to mention patience and persistence. Beacon station operator John Ceccherelli, N2XE, seemed more exited than Tippett about the achievement, even though it requires almost no effort on his part. Hey, I have to flip the switch, grab a beer and go watch TVthats effort he's reported saying, adding Im thrilled the record was set by an all-American team using all-American equipment. The Ten Tec receiver is manufactured in Severville, TN and the Elecraft transmitter is produced in California and offered as a kit. For more information, contact Bill Tippett at mailto:[EMAIL PROTECTED][EMAIL PROTECTED] or John Ceccherelli at http://www.eham.net/articles/'[EMAIL PROTECTED]'[EMAIL PROTECTED] The Beacon Tribune Poughkeepsie, NY _ On the road to retirement? Check out MSN Life Events for advice on how to get there! http://lifeevents.msn.com/category.aspx?cid=Retirement ___ 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 or K2/100 + amp, QSK?
On CW, it depends on the amp. If it is the traditional amp with a relay you will have the traditional VOX delay. Or you could get an Ameritron QSK-5 and retain the K2's level of QSK. However if you get a QSK amp, like some of the Alpha's or TenTec's, you can retain the degree of QSK that the K2 or K2/100 is able to provide. 73HankK8DD John Pfeifer wrote: Been following the thread on running an external amp with the K2 or K2/100. I was wondering how connecting an external amp changes the QSK behavior. Or, are people only using an external amp for SSB? Thanks, John Pfeifer - KL0WN ___ 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 -- */Hank Kohl K8DD [EMAIL PROTECTED] */ARRL TS MI-QRP - Vice Pres. QRP-ARCI - Director */ If God intended you to be on single sideband, he would have given you only one nostril. Steve, K2PTS /b(SK) 'Never argue with an idiot. They drag you down to their level then beat you with experience.' -anon ___ 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] Rig recption comparison
I have begun running my personal comparison test between three receivers. The tests have been on SSB reception. My newly constructed K-2 (with DSP) Kenwood TS 2000 Older TS930s that I recently had professionally tuned up. The bottom line is that there is no comparison. I live in a fairly urban, high noise location. The noise floor on the TS 2000 makes it almost unusable on HF. Using the same antenna, I often can't even tune in stations that are clear as a bell on the 930 and K2. I am also finding that the K2 is outshining the much venerated 930s. With filters properly set on the K-2 I find that if I get any reception at all, the stations coming in on the K2 are clear with inconsequential background noise. From early tests, the 930s is usually able to hear the same stations. However, I need to fiddle with controls a lot and there is a big noise floor. I think the DSP in the K2 has contributed substantially to the K2's superior performance. The 930s probably has a superior AF amplifier and sound volume. When the unit is properly set up the sound can really boom out (my wife complains a lot) and the tone is rich with good tone balance. However, ONCE THE FILTERS ARE PROPERLY TUNED, the K2 has more than adequate volume and tone. Again, the DSP, which does a superior job of noise control, comes through for the K2, making reception a much easier, clearer and more pleasant experience. All in all I am very satisfied with the performance of this little box. As I sit here in Seatte I am listening to a SSB station from Los Angeles that is coming in as clear as if it was broadcasting next door. I am going to make a more close comparison between the K2 and the 930s in the next couple of weeks. I will limit my use of the 2000 to the VHF and UHF frequencies, where it does an excellent job. ___ 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] order in which components are built - question
Hi folks - In starting a new K2 project, I will be approaching it somewhat differently than my prior K2s. My 1st component, arriving soon, will be the basic K2. I then plan to build the amp and external tuner in the separate EC2 enclosure. I will be leaving SSB, computer interface, DSP, and the internal tuner battery until last. In short I want to get to full power cw capability first. My question is this: with this order of building will I be creating a situation where I have to redo or change a component - ie creating extra work for myself? Thanks folks. Regards, Tim Logan 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] order in which components are built - question
Hi folks - In starting a new K2 project, I will be approaching it somewhat differently than my prior K2s. My 1st component, arriving soon, will be the basic K2. I then plan to build the amp and external tuner in the separate EC2 enclosure. I will be leaving SSB, computer interface, DSP, and the internal tuner battery until last. In short I want to get to full power cw capability first. My question is this: with this order of building will I be creating a situation where I have to redo or change a component - ie creating extra work for myself? Thanks folks. Regards, Tim Logan 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] AGC Threshold Adjustment by Changing R1
In the reply to Mike, VK1KCK I said R1 is given as 50K preset. In the world outside the USA this would indeed equate to 47K I found that this is not quite correct as although for carbon presets and controls have changed to the same decade values as fixed resistors in Europe at least, cermet presets which most probably Elecraft will be using for R1, still retain the older values such as in this case 50K for some reason. A visual check on my K2 is that R1 when set for 3.70V at U2B-5, being the optimum AGC threshold setting for my K2, the control is not far from half rotation, i.e. about 25K ohms. Working out the maths for the various resistors in series and parallel, including the RF gain control to form the potential divider from the 8A rail comes out fairly close to this voltage. The preset R1 is as shown in the K2 Control Board schematic, maximum resistance for fully CCW. Bob, G3VVT K2 #4168 ___ 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] order in which components are built - question
Hi folks - In starting a new K2 project, I will be approaching it somewhat differently than my prior K2s. My 1st component, arriving soon, will be the basic K2. I then plan to build the amp and external tuner in the separate EC2 enclosure. I will be leaving SSB, computer interface, DSP, and the internal tuner battery until last. In short I want to get to full power cw capability first. My question is this: with this order of building will I be creating a situation where I have to redo or change a component - ie creating extra work for myself? Thanks folks. Regards, Tim Logan 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] Capacitance values
Hello, I found this pseudo number line handy F. xmx,xux,xnx,xpx (Farads, then milli, micro, nano and pico) 0.000,000,000,000 eg you have a 1200pf capacitor, how many uF is that? Put the 1200 in its place on the line thus: 0.000,000,001,200 Then read of the value with realtion to micro farards (uF) x.xxx,xx0,001,200 ie 0.0012 uF I think that works! hi! 72 Nicholas 2E1LOK / GQRP 11458 / K2 #2448 From: John [EMAIL PROTECTED] To: Elecraft Mail List elecraft@mailman.qth.net,QRP-L [EMAIL PROTECTED] Subject: [Elecraft] Capacitance values Date: Thu, 6 Jan 2005 11:37:26 -0700 Can anyone point me to a site that will convert capacitor values from one form to another. Capacitors values can be listed in uf, pf, or nf values and converting from to another can be confusing. I recall seeing a site that would do the conversion but I guess I have misplaced it. Help! John K7SVV ___ 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] Is it possible to connect a amp to the K2
I use my K2/100 to drive an ALS-600 with the QSK-5 T/R box and I can't say enough good things about the QSK-5. It's a little pricey but it certainly does a great job and coupled with the no-tune solid state amp its a nifty combo. No affiliation with Ameritron, etc., etc. Doug W6JD - Original Message - From: Dale Boresz [EMAIL PROTECTED] To: Elecraft@mailman.qth.net Sent: Thursday, January 06, 2005 4:28 AM Subject: Re: [Elecraft] Is it possible to connect a amp to the K2 I've been using my K2/100 to drive my Ameritron AL-811H for a couple of years, and it works great. Later, when I built the KPA100, I used the high voltage output keying line to drive the amp, and that worked fine as well. Still later, after getting tired of listening to the clanking of the relay in the AL-811H, I bought the Ameritron QSK-5 QSK-T/R unit, and that was the best solution of all. Not only is there no noise from the relay in the amplifier, but the tubes in the amplifier are cut-off so no plate current flows until just a couple of milliseconds before the rf is delivered, and it returns to cutoff within a couple of milliseconds after the rf has finished. So, the amp runs cooler, and is absolutely quiet except for the almost inaudible 'tick' of the reed relay inside the QSK-5 unit. ___ 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] Capacitance values
Can anyone point me to a site that will convert capacitor values from one form to another. Capacitors values can be listed in uf, pf, or nf values and converting from to another can be confusing. I recall seeing a site that would do the conversion but I guess I have misplaced it. Help! John K7SVV ___ 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 with Alpha 99
Is it possible to key the K2/100 for CW QSK operation with the Alpha 99. If so, how should the delay be set in the K2. I would rather key the K2 first rather than keying the Alpha 99 and running the keying line back to the K2. Roy Morris W4WFB However if you get a QSK amp, like some of the Alpha's or TenTec's, you can retain the degree of QSK that the K2 or K2/100 is able to provide. ___ 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] Power Amplifier for K2
Hi Rich and all, This is an very impressive and reasonably priced project...unfortunately my neighbors seem to like the fact that I'm qrp...but I'm thinking about it. Only needs 6 watts to drive, too and the low pass filters are also available quite reasonably. Is about $60.00 a pop (poor choice of words?) about right for the MRF-150's? Tom WB2QDG K2 1103 -Original Message- From: Richard Haendel [EMAIL PROTECTED] To: elecraft@mailman.qth.net elecraft@mailman.qth.net Date: Thursday, January 06, 2005 9:53 AM Subject: [Elecraft] Power Amplifier for K2 For those who think life is too short to do QRP all the time, here is what I did. I made an amplifier similar to the amp in Communication Concepts web page, specifically the Motorola EB-104 Amplifier (kit!) that uses 4 MRF-150 transistors. See www.communication-concepts.com/eb104.htm. I use 48 volts supply voltage and keep the 48 volts on all the time. I use the 8R line of the K2 with the keying circuit mentioned several times in this reflector. I built a set of low pass filters for the bands I operate, that is 40M, 20M and 17 M. I get about 500 watts out of the amplifier after the low pass filters and the relays. I use a 2 element wire beam up 35 feet so I don't have a huge signal but the audio compression in the K2 really helps a lot. It sure is nice to break a pileup on 20M phone with one call when the band is open to Africa!! If anyone needs more info, please e-mail me for more details. 73 Rich, W3ACO ___ 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] XG1 help
I have a newly built XG1. Wanted to try to calibrate the s-meter on my K2. Problem is very weak output tone on 50 uv setting. Not sufficient to light s-meter. Can't hear tone at all on 1 uv setting. All resistance checks are ok on XG1, all components look to be in correct locations, soldering looks good. Connected to radio using the male-male adapter. Bad xtal? Any ideas appreciated. Tony W7GO ___ 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] OA on CW
On Thu, 2005-06-01 at 21:07 -0500, L. D. Ingram wrote: snip Has anyone here ever worked an OA on CW?? snip Ray, Sounds like you had an interesting - and frustrating - time. Don't know if your question is rhetorical or not but I did work OA4WW on 17 meters a little over a year ago. I was running 10 watts to a dipole. I worked OA on 15 metre CW on 27 Nov with my K2 (yes, that was CQWW CW). -- 73, Brian VE7NGR ___ 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
