[Elecraft] For sale LP-Pan and Emu 0202
For sale LP-Pan panadapter with preamp excellant condition. Creative labs E-MU 0202 24-bit 192KHz USB 2.0 Audio Interface also in excellent condition. Price for both 200.00 plus shipping If interested please contact off list at ve3...@hotmail.com Mike VE3WDM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Sale fell through, K2-100 (again) For Sale
Subject: K2-100 For Sale K2-100 #4991 for sale; well equipped with KAT2 (internal tuner), KSB2, KDSP2, KIO2, KNB2, FDIMP, and MH-2 hand microphone and Anderson PowerPole cable. It has Don's (W3FPR) constant-level audio output module installed, as well as the K6XX CW tuning indicator (blinks the far right LED on S-meter when within 20 hertz of a CW signal). Assembled by a very experienced kit builder (NJ3V) who's a Naval Academy graduate (engineer) and high school physics teacher; rig has less than two hours on the finals; non-smoking environment and never outside. It performs beautifully and was just aligned by Don Wilhelm, W3FPR, and is in peak condition, power output is better than specifications.; all documentation (and it's extensive!). Reason for selling? I use it very little since acquiring a K3-100 (#3448) about two years ago. Kit price today for a K2-100 with these options is about $1900+. Asking $950 and I will ship CONUS only. Please reply off reflector to h3c...@gmail.com 73, Cary, K4TM Lynchburg, VA H. Cary III h3c...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] CW transmitting - any clicks?
This may be a stupid question, but does the KX3 click at all transmitting CW? For example - when I stick my headphones on with my FT-857D it still clicks between RX and TX. It makes it impossible to have quiet, non-bothersome QSO's in camp when everyone else is trying to bed down for the night. I can throw some clothes around the rig but that doesn't solve the problem, just dampens it. Steve, KC8QVO -- View this message in context: http://elecraft.365791.n2.nabble.com/CW-transmitting-any-clicks-tp7050281p7050281.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] CW transmitting - any clicks?
Steve, Except for the noise my straight key makes, I've never noticed any noise from the KX3... Regards, kurtt Kurt Pawlikowski, AKA WB9FMC The Pinrod Corporation ku...@pinrod.com (773) 284-9500 http://pinrod.com On 12/1/2011 06:06, Steve KC8QVO wrote: This may be a stupid question, but does the KX3 click at all transmitting CW? For example - when I stick my headphones on with my FT-857D it still clicks between RX and TX. It makes it impossible to have quiet, non-bothersome QSO's in camp when everyone else is trying to bed down for the night. I can throw some clothes around the rig but that doesn't solve the problem, just dampens it. Steve, KC8QVO -- View this message in context: http://elecraft.365791.n2.nabble.com/CW-transmitting-any-clicks-tp7050281p7050281.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] CW transmitting - any clicks?
Steve, The K2, K1, KX1 and K3 all have electronic Transmit/Receive switching, and I would expect the KX3 will as well, so there will be no relay clicking noise. 73, Don W3FPR On 12/1/2011 7:06 AM, Steve KC8QVO wrote: This may be a stupid question, but does the KX3 click at all transmitting CW? For example - when I stick my headphones on with my FT-857D it still clicks between RX and TX. It makes it impossible to have quiet, non-bothersome QSO's in camp when everyone else is trying to bed down for the night. I can throw some clothes around the rig but that doesn't solve the problem, just dampens it. Steve, KC8QVO __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Elecraft K3 - WTB KBPF3
I would like to purchase a KBPF3 General Coverage RX Bandpass Module for the K3. (If seller is in the USA, we can easily sort out payment.) Kindly contact me off list if you have one for sale. Thanks and 73, Dave Lankshear G3TJP g3tjp (at) ARRL (dot) net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] N2CQ QRP Contest Calendar: Closing
QRP Contesters, The N2CQ QRP Contest Calendar is closing down on December 31. To replace it, I recommend the WA7BNM Contest Calendar (QRP Page) for your website or desktop with this link: http://www.hornucopia.com/contestcal/contestcal_qrp.html Thanks for your interest in the Calendar I have the above link on my desktop for all contest activity. 73, Ken N2CQ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] CW transmitting - any clicks?
It is only the very faint quantum clicking of PIN diodes... but you need really good ears to hear it :) 73, Drew AF2Z On Thu, 01 Dec 2011 04:06:49 -0800 (PST), you wrote: This may be a stupid question, but does the KX3 click at all transmitting CW? For example - when I stick my headphones on with my FT-857D it still clicks between RX and TX. It makes it impossible to have quiet, non-bothersome QSO's in camp when everyone else is trying to bed down for the night. I can throw some clothes around the rig but that doesn't solve the problem, just dampens it. Steve, KC8QVO __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Ferrite freq response
A few weeks back there was a thread about ferrite cores. While catching up on (paper) mail at work this morning, I was flipping through a magazine and came across an article, The Small-Signal Frequency Response of Ferrites, that might be of interest to those who took part in the ferrite thread. It can be found online at http://highfrequencyelectronics.com/ and go to Article Archives and then to June 2011. 73, Mike ab3ap __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Firmware Releases
Today - as soon as I get a moment to upload it :-) 73, Eric www.elecraft.com On 11/30/2011 7:26 PM, n2...@aol.com wrote: I had a question about the old firmware and when a newer one would be available and this is the response I received: We plan to release another K3 f/w version anytime now, with support for Remote Rig and some other changes. Hope this is true! 73's Michael n2zdb __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] CW transmitting - any clicks?
On Thu, Dec 1, 2011 at 9:04 AM, drewko drew...@verizon.net wrote: It is only the very faint quantum clicking of PIN diodes... but you need really good ears to hear it :) = It would probably only be audible to the guy who could read Heisenberg uncertainty on his voltmeter. Tony KT0NY -- http://www.isb.edu/faculty/facultydir.aspx?ddlFaculty=352 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [KPA500] Rear power switch thread
To be clear, I kill mains power to the station *after* powering down the gear with their individual front panel switches. Dick, you and I have had similar experiences going way back to vacuum tube days. 73, Ron AC7AC -Original Message- The statement below caught my eye, and I thought I would comment FWIW. A few decades ago, the part of the city I lived in had a momentary open on the power line. When power came back on a moment later, it had a high voltage spike that took out many, many, colored TV sets (and other things) back when color TV sets were relatively new and expensive. I thought of my ham equipment, so I got a metal box and mounted a 110 Volt relay on it that fed some outlets attached to boxes on both sides. I bring up the relay with a momentary push switch. The relay then locks up to it's own contacts. To release the relay, I press another momentary switch to open the path to the coil. This way, I plug in all equipment I want to protect to the box. If a momentary open hit occurs, the relay drops and powers off all my equipment (which has happened). It is my master power switch as well. I power off all my equipment before I release the relay to reduce contact arcing when I re-operate it. The original relay is still in use. Dick, n0ce _ Personally, I simply kill the main supply power line to the station. That does the same thing with one switch. 73, Ron AC7AC Richard Fjeld, n0ce rpfj...@embarqmail.com E=IR, it's the law. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Itching for a new rig
Sales commission? You get a sales commission? ;-) Ed, I only had a new rig the first few years. That was the first three years. What can I say, I was excited about the hobby (I still am) and I was single. My first was a Kenwood TS-530SP which I still have and use. My second rig was a Ten Tec Century 22 a CW rig which I still have and use. My third rig was a Kenwood TS-440s which I no longer have. In 2007 I bought a Ten Tec Argonaut V. I didn't like the DSP so I sold it after eight months and bought the K2 and put it together. It ended up being a K2/100 but, I switch the tops back and forth depending on how I feel and what I want to work. I really like it and as well as my other rigs but, darn it, I have this itch and it won't go away this time! I may have to just buy a K3 and I'll blame you it it doesn't work out. Okay? ;-) On Wed, 30 Nov 2011 22:26:57 -0900 Edward R. Cole kl...@acsalaska.net wrote: Gary, Wow a new rig every year! Lets see: 1957 - new Knight Ocean Hopper $19.95, used Heath DX-35 $35 1966 - used Clegg Interceptor-B, used Johnson Ranger 1967- new Heath SB-110 1976 - new IC-211 1982 - new TS-180S 1996 - new Tentec Scout 1997 - used FT-840 1998 - new FT-847 1999 - new FT-817 2009 - new K3 2012? new KX3 54-years = 8 new radios - one every seven years. Gary, Simply love the K3. You done your research - now just buy the K3. (Wayne - just mail me my sales commission ;-)) 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 50-1.1kw?, 144-1.4kw, 432-QRT, 1296-?, 3400-? DUBUS Magazine USA Rep dubus...@gmail.com == __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] CW transmitting - any clicks?
On Thu, 1 Dec 2011 10:39:29 -0600 Tony Estep estept...@gmail.com writes: On Thu, Dec 1, 2011 at 9:04 AM, drewko drew...@verizon.net wrote: It is only the very faint quantum clicking of PIN diodes... but you need really good ears to hear it :) = It would probably only be audible to the guy who could read Heisenberg uncertainty on his voltmeter. Tony KT0NY H is it or isnt it oops there it was Bob K3DJC 53 Year Old Mom Looks 33 The Stunning Results of Her Wrinkle Trick Has Botox Doctors Worried http://thirdpartyoffers.juno.com/TGL3141/4ed7bdd4326291f32m03vuc __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Elecraft SSB Net
Hi Gang, It looks like I will not be able to be NCS for the Sunday Elecraft SSB Net this week (12/4/11). I don't have any available back-ups at this point, so we need someone to step forward and take the net this Sunday. It is an easy going group of guys and an informal net. It isn't too hard. It would help if you can put a good signal out on 20m - perhaps with an amplifier and beam antenna. If you are interested, drop me a message and I can fill you in. The net is at 1800z on or about 14.3035 MHz. Thank you. 73, Phil NS7P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [KPA500] Rear power switch thread
Dave, thanks for taking the time trying to explain it. I know what actually happens and why one should first power of the radio before cutting the lines. Nevertheless Elecraft is not the only one using encoders but still they are the only ones with a requirement for that procedure. This has nothing to do with being an SDR. Lets stay at one defined example, the VFO. Everybody is using an encoder here, whatever brand it is. Still when I cut power off my Icom (and all other rigs I know of) it always comes back to the last used frequency mode. If I just cut power from my K3 it never comes back to the same frequency! It usually is one in the same band but not the last used one. So how do others do it? I imagine they simply write the current frequency into memory after probably a few milliseconds of no VFO move. Elecraft could do the same (actually they are doing it when powering down the rig). So my question is simple: Why don't they do it? What are the reasons behind? Not enough time while working down the operations code? A limitation of the PICs used as the central brain (the other brands use bigger/faster processors)? Don't get me wrong, I really like my K3 KPA500 and have no problems at all with how they work. Nevertheless I am curios to know the reasons. Might be 'cause I'm into (only a little) programming myself and want to understand other guys logics and learn something, too. ;-)) 73, Olli - DH8BQA http://www.dh8bqa.de - Original Message - From: David Herring d...@ah6td.com To: Oliver Dröse dro...@necg.de Cc: elecraft@mailman.qth.net Sent: Thursday, December 01, 2011 12:07 AM Subject: Re: [Elecraft] [KPA500] Rear power switch thread Olli, This is a bit of an oversimplification, but I think it will convey the point good enough to address your very valid question without getting into what could otherwise be a very long answer. On most other rigs on the planet, the settings are dictated by the position of the knobs and switches. Pull the plug on them and whatever computing faculties are present in the rig will simply reboot their software and continue on as normal the next time power is applied. The K3 is more software defined than that. The settings are NOT necessarily dictated by the position of the knobs and switches. The settings are defined by what's been stored in memory, which is a result of the last change in knob and switch position, not necessarily where the knob or switch is now. When you power down the K3 using the front panel power button, this sends an instruction to the computer to save all this information in an orderly and proper manner for next time, and then power off. When you pull the plug, the computer in the K3 doesn't get the opportunity to save this stuff out in an orderly fashion. 99% of the time it's no problem. But pull the plug while the computer happens to be doing a routine save of this information, so that not all gets saved or saved properly (as an example), and you could wind up with a collection of settings that are inconsistent or self-contradicting. At that point, when you power on next time the computer hasn't got a hope of figuring out what to do. Your rig has just become hosed. You'll need to reset everything back to a generic state and start over. I don't have first hand knowledge of other SDR rigs, but I imagine Elecraft is not the only one with this feature. (I don't call it a problem because it isn't...it's exactly how the architecture is designed to work) I hope that helps. Dave AH6TD On Nov 30, 2011, at 12:35 PM, Oliver Dröse wrote: Hi Ron, the arguments are told over and over again (it is like a computer, etc.) for the K3 and KPA500. Still I do not see WHY it is possible with every other transceiver and PA on earth to simply shut down power (disconnecting from mains) without first switching it off and without any possible problems? They use the same computer technique inside ... Just curious. ;-)) 73, Olli - DH8BQA - Original Message - From: Ron D'Eau Claire r...@cobi.biz To: elecraft@mailman.qth.net Sent: Wednesday, November 30, 2011 4:42 PM Subject: Re: [Elecraft] [KPA500] Rear power switch thread Just to be clear - the Elecraft equipment should be turned off using the front panel switch *before* it is disconnected from the mains supply so the logic system can do a proper shut-down. You can get away with pulling the plug much of the time, but sooner or later you'll catch the logic in the process do doing something critical - writing data to memory, etc. - and will end up with scrambled data. That can be corrected by reloading the firmware, but it's a hassle easily avoided by powering down with the front panel switch first. Ron AC7AC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:
Re: [Elecraft] Elecraft SSB Net
Hi Phil, I am a newbie ham (about 1 year) and brand new K3 owner (two days online). I would like to attend the net but am not ready to take on a net faciitiation. Plus I don't have my Quadra yet connected to my K3. I will check in on 20m at the time to see if the net is taking place. If someone takes on the net facilitation role, please send out a message as such. Thanks Best Regards, Keith AG6AZ From: ph...@riousa.com To: elecraft@mailman.qth.net Date: Thu, 1 Dec 2011 10:00:29 -0800 Subject: [Elecraft] Elecraft SSB Net Hi Gang, It looks like I will not be able to be NCS for the Sunday Elecraft SSB Net this week (12/4/11). I don't have any available back-ups at this point, so we need someone to step forward and take the net this Sunday. It is an easy going group of guys and an informal net. It isn't too hard. It would help if you can put a good signal out on 20m - perhaps with an amplifier and beam antenna. If you are interested, drop me a message and I can fill you in. The net is at 1800z on or about 14.3035 MHz. Thank you. 73, Phil NS7P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Itching for a new rig
Gary D Krause wrote: darn it, I have this itch and it won't go away this time! I may have to just buy a K3 and I'll blame [Ed] if it doesn't work out Gary, If you buy a K3, you need to blame *me* if it doesn't work out :) Seriously, let me know if you have any lingering questions. 73, Wayne N6KR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] How Can Memory access only VFO A?
You want to return to the bottom edge of the band, right? Just right click on the bandmap in question, no matter how zoomed in it is and select Go To Bottom of Band and youre there! Its smart enough to know if youre in a phone or CW contest what the bottom of the band actually *IS*, too... Or, if the frequency is truly left on the sub receiver, and here I assume its on VFO B, then simply tap (NOT Press and hold, in that case, you activate B-SET) the a/b key to swap the frequencies in each VFO. That's the way it worked on my old TS850 and works on my current TS570D, too. -lu-W4LT- Message: 2 Date: Thu, 1 Dec 2011 02:37:38 -0500 From: PTA_ABD wb2...@roadrunner.com Subject: Re: [Elecraft] How Can Memory access only VFO A? To: elecraft@mailman.qth.net Message-ID: C71B9C39640143A0A99B0AC2A40462FA@dadsdell Content-Type: text/plain;charset=iso-8859-1 Since you're using N1MM, type the desired frequency into the call entry logging window and press enter. Paul WB2ABD In CQWW CW it was common to find a pileup that was a big mess, or the DX at the bottom of it was hard to ID for some reason. Time to move on and return later. The frequency is left on the SUB receiver while tuning the MAIN. Eventually I want to return to the bottom edge of the band without spinning the dial, so I need a memory to access only the MAIN VFO so as not to lose that other frequency. This should be possible, but I can't figure out how to do it. Can someone explain how this is done like with other radios? I realize something short can be put into the bandmap for a later return, but if it's in a zoomed in mode the return is too cumbersome. Not a good option. 73, Jim W6YA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] My new KPA500
UPS says my new KPA500 is now in Illinois and due to be delivered on Monday. There is a CW contest this weekend. I am sure we are getting close to a KAT500. LOTW is running smthly. Life is good!! ;o} Joe K2UF No trees were harmed in the sending of this e-mail; however, many electrons were inconvenienced. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] My new KPA500
RTTY this weekend on 10m, use ARRL sweepstake template for WinTest users. Ken..G0ORH Sent from my iPhone On 1 Dec 2011, at 20:15, Joe K2UF j...@k2uf.com wrote: UPS says my new KPA500 is now in Illinois and due to be delivered on Monday. There is a CW contest this weekend. I am sure we are getting close to a KAT500. LOTW is running smthly. Life is good!! ;o} Joe K2UF No trees were harmed in the sending of this e-mail; however, many electrons were inconvenienced. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [KPA500] Rear power switch thread
Responses woven within; trimmed for brevity. Rick WA6NHC -Original Message- From: Oliver Dröse Nevertheless Elecraft is not the only one using encoders but still they are the only ones with a requirement for that procedure. This has nothing to do with being an SDR. * It has to do with Elecraft being more 'up front' and honest about how * their design is managed. Other companies simply don't tell you all of * internal workings (or as much) and shrug their corporate shoulders if * the memory gets hashed during a power loss. * * Try complaining to say, MicroSoft if you pull the plug instead of an * orderly shutdown. If they answer at all, they'll say Don't do that. If I just cut power from my K3 it never comes back to the same frequency! It usually is one in the same band but not the last used one. * Because, as stated, the memory was not written before power removal. For * the sake of performance (CPU activity), they chose this way. * * The graceful power down writes MANY things into the memory (mode, filters * bandwidth etc.). A rude power off doesn't allow this and Elecraft * warns you of this 'chance occurrence' (it doesn't happen all the time). So how do others do it? I imagine they simply write the current frequency into memory after probably a few milliseconds of no VFO move. Elecraft could do the same (actually they are doing it when powering down the rig). * I'll remind you that no other current rig performs as well. It's the * small things that add up to make the difference. Elecraft is not willing * to give up one small portion that might sacrifice performance. I simply * power off, then leave the power supply on, so it isn't an issue. A power * failure when I'm not at the shack then leaves no issue other than small * parasitic drain (and I run other radios 24/7 for IRLP/EchoLink). So my question is simple: Why don't they do it? What are the reasons behind? Not enough time while working down the operations code? A limitation of the PICs used as the central brain (the other brands use bigger/faster processors)? * You have my opinion as a user. * * I happen to also love everything about the radio (except when I get in a * rush and don't press a button long enough and end up changing bands * instead of turning on/off the VOX). I'm very pleased that the radio does * EVERYthing that the manufacturer says it will do (and how!) and that * problems or questions are dealt with (answered) within hours, not weeks * or months (if ever). * * Elecraft has remembered that anyone can make a sale, once. But it's * customer service (a faintly remembered commodity) that makes the company. * As long as they continue to remember that, I'm loyal. I've dropped other * companies (not that they'd notice) for just that reason. If I buy any * product, I expect it to do what is advertised. With Elecraft, I win. * * Elecraft, you ROCK! __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] My new KPA500
That means CW all night on 160 and RTTY all day on 10. No need to sleep at all. Life gets better and better!!! Jope K2UF No trees were harmed in the sending of this e-mail; however, many electrons were inconvenienced. -Original Message- From: Ken Chandler [mailto:g0...@sky.com] Sent: Thursday, December 01, 2011 3:42 PM To: Joe K2UF Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] My new KPA500 RTTY this weekend on 10m, use ARRL sweepstake template for WinTest users. Ken..G0ORH Sent from my iPhone On 1 Dec 2011, at 20:15, Joe K2UF j...@k2uf.com wrote: UPS says my new KPA500 is now in Illinois and due to be delivered on Monday. There is a CW contest this weekend. I am sure we are getting close to a KAT500. LOTW is running smthly. Life is good!! ;o} Joe K2UF No trees were harmed in the sending of this e-mail; however, many electrons were inconvenienced. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [KPA500] Rear power switch thread
The K3 (like the K2 and our other rigs) uses EEPROM for nonvolatile parameter storage. This decision was based on several criteria, and we believe it was the right choice at the time. It's conceivable that in a future product we might go with battery-backed-up RAM. The MCU does try to write all changed parameters to EEPROM in the event of power disappearing suddenly; the electrolytic capacitors do hold up the MCU's voltage for some milliseconds. But your humble firmware guy is a lot happier when power is turned off at the radio first, allowing a clean shut-down sequence. Thanks for your tolerance of our various idiosyncrasies. 73, Wayne N6KR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [KPA500] Rear power switch thread
On Thu, Dec 1, 2011 at 12:27 PM, Oliver Dröse dro...@necg.de wrote: ...when I cut power off my Icom (and all other rigs I know of) it always comes back to the last used frequency... === Well, it could be worse. There's at least one commercial transceiver that responds really negatively to a bad power-off sequence; in the worst case, you might find that your entire configuration could be lost, including CAT ports, audio interface setup, and saved frequency memories. Tony KT0NY __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 + Yamaha CM500 and VOX
Hello, would someone using the CM500 share his VOX and ANTIVOX settings please? I can somewhat get vox to work properly when using the phones alone, but there's no way to get it right if I use spkr+phones (say, if I want someone to hear what I'm hearing). Here're my settings: MIC SEL = RP.L bias MIC = 12 CMP = 22 VOX GN = 013 ANTIVOX = 008 With these settings, I get a loud feedback whistle if I have the speakers turned on. Raising antivox doesn't seem to help, lowering vox gain much below 10 cuts my first syllables. Thanks Pf -- Pierfrancesco Caci, ik5pvx __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 + Yamaha CM500 and VOX
Pf, Where do you have the Monitor set? When using speakers, I believe the monitor should be set to zero. Yes, audio feedback will result if the monitor is turned on and coming out of the speakers - that sound will be heard y the microphone. That problem has nothing to do with the VOX or Anti-Vox settings - different phenomenon. 73, Don W3FPR On 12/1/2011 4:14 PM, Pierfrancesco Caci wrote: Hello, would someone using the CM500 share his VOX and ANTIVOX settings please? I can somewhat get vox to work properly when using the phones alone, but there's no way to get it right if I use spkr+phones (say, if I want someone to hear what I'm hearing). Here're my settings: MIC SEL = RP.L bias MIC = 12 CMP = 22 VOX GN = 013 ANTIVOX = 008 With these settings, I get a loud feedback whistle if I have the speakers turned on. Raising antivox doesn't seem to help, lowering vox gain much below 10 cuts my first syllables. Thanks Pf __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 + Yamaha CM500 and VOX
Don == Don Wilhelm w3...@embarqmail.com writes: Don Pf, Don Where do you have the Monitor set? When using speakers, I believe the Don monitor should be set to zero. Yes, audio feedback will result if the Don monitor is turned on and coming out of the speakers - that sound will Don be heard y the microphone. Don That problem has nothing to do with the VOX or Anti-Vox settings - Don different phenomenon. Ah, good point, I keep monitor around 15-17 usually. Lowering it below 10 still gives me some useful return of my voice in the earphones, and I get no whistle unless I put the microphone right in front of the external speakers. Thanks Don! Pf -- Pierfrancesco Caci, ik5pvx __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [KPA500] Rear power switch thread
Hi all, Choosing EEPROM for nonvoatile storage was the right choice then and still is. Please don't even entertain a single thought about going back to a battery backed up RAM solution (remember PC BIOS settings in CMOS?). It has infinitely more problems than an EEPROM based solution. I really have no idea what people are complaining about. I don't think there are any products out there anymore relying on battery backed up CMOS RAM, thank God. There are many ways to improve (if improvements are indeed needed) the power loss reliability of non-volatile storage, such as fallback on a second copy should the first one fail (you do use checksums, right?) AB2TC - Knut wayne burdick wrote The K3 (like the K2 and our other rigs) uses EEPROM for nonvolatile parameter storage. This decision was based on several criteria, and we believe it was the right choice at the time. It's conceivable that in a future product we might go with battery-backed-up RAM. The MCU does try to write all changed parameters to EEPROM in the event of power disappearing suddenly; the electrolytic capacitors do hold up the MCU's voltage for some milliseconds. But your humble firmware guy is a lot happier when power is turned off at the radio first, allowing a clean shut-down sequence. Thanks for your tolerance of our various idiosyncrasies. 73, Wayne N6KR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@.qth This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- View this message in context: http://elecraft.365791.n2.nabble.com/KPA500-Feature-Request-tp7045355p7052755.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [KPA500] Rear power switch thread
Olli, Oh, OK, I see where you are coming from. The final answer would have to come from Elecraft itself, but I'll hazard a guess that it is probably performance and longevity. Writing to EEPROM is a relatively slow process and may ( ? ) represent a performance hit within the K3 architecture, the effects of which can be minimized by choosing when to write and when not to write to EEPROM. EEPROMs have a finite number of writes in their designed lifespan. You want these things to last a very long time. So I imagine the firmware developer caches settings in volatile memory (for performance) and writes to EEPROM in well timed batches (for performance and longevity) as a way of addressing these two issues. Again, just a guess and it'd sure be nice if Elecraft could weigh in on this and stop the guessing (though I get that this is unlikely the most important thing they have to do right now). ;-) 73 Aloha, Dave AH6TD On Dec 1, 2011, at 8:27 AM, Oliver Dröse wrote: Dave, thanks for taking the time trying to explain it. I know what actually happens and why one should first power of the radio before cutting the lines. Nevertheless Elecraft is not the only one using encoders but still they are the only ones with a requirement for that procedure. This has nothing to do with being an SDR. Lets stay at one defined example, the VFO. Everybody is using an encoder here, whatever brand it is. Still when I cut power off my Icom (and all other rigs I know of) it always comes back to the last used frequency mode. If I just cut power from my K3 it never comes back to the same frequency! It usually is one in the same band but not the last used one. So how do others do it? I imagine they simply write the current frequency into memory after probably a few milliseconds of no VFO move. Elecraft could do the same (actually they are doing it when powering down the rig). So my question is simple: Why don't they do it? What are the reasons behind? Not enough time while working down the operations code? A limitation of the PICs used as the central brain (the other brands use bigger/faster processors)? Don't get me wrong, I really like my K3 KPA500 and have no problems at all with how they work. Nevertheless I am curios to know the reasons. Might be 'cause I'm into (only a little) programming myself and want to understand other guys logics and learn something, too. ;-)) 73, Olli - DH8BQA http://www.dh8bqa.de - Original Message - From: David Herring d...@ah6td.com To: Oliver Dröse dro...@necg.de Cc: elecraft@mailman.qth.net Sent: Thursday, December 01, 2011 12:07 AM Subject: Re: [Elecraft] [KPA500] Rear power switch thread Olli, This is a bit of an oversimplification, but I think it will convey the point good enough to address your very valid question without getting into what could otherwise be a very long answer. On most other rigs on the planet, the settings are dictated by the position of the knobs and switches. Pull the plug on them and whatever computing faculties are present in the rig will simply reboot their software and continue on as normal the next time power is applied. The K3 is more software defined than that. The settings are NOT necessarily dictated by the position of the knobs and switches. The settings are defined by what's been stored in memory, which is a result of the last change in knob and switch position, not necessarily where the knob or switch is now. When you power down the K3 using the front panel power button, this sends an instruction to the computer to save all this information in an orderly and proper manner for next time, and then power off. When you pull the plug, the computer in the K3 doesn't get the opportunity to save this stuff out in an orderly fashion. 99% of the time it's no problem. But pull the plug while the computer happens to be doing a routine save of this information, so that not all gets saved or saved properly (as an example), and you could wind up with a collection of settings that are inconsistent or self-contradicting. At that point, when you power on next time the computer hasn't got a hope of figuring out what to do. Your rig has just become hosed. You'll need to reset everything back to a generic state and start over. I don't have first hand knowledge of other SDR rigs, but I imagine Elecraft is not the only one with this feature. (I don't call it a problem because it isn't...it's exactly how the architecture is designed to work) I hope that helps. Dave AH6TD On Nov 30, 2011, at 12:35 PM, Oliver Dröse wrote: Hi Ron, the arguments are told over and over again (it is like a computer, etc.) for the K3 and KPA500. Still I do not see WHY it is possible with every other transceiver and PA on earth to simply shut down power (disconnecting from mains) without first switching it off and without any
Re: [Elecraft] [KPA500] Rear power switch thread
It's also possible to power the micro-controller through a diode isolated super capacitor of 1 or 2 farads that will run it for some considerable time. The firmware would then detect un-planned power removal sequence and perform an appropriate save process before the super capacitor voltage drops below the brownout level. I have a real-time clock in one of my PIC projects powered with a diode isolated 0.22 farad super capacitor that will run the RTC clock chip for several days if power is removed. That chip consumes much less power than a PIC, but it shouldn't take a PIC more than few hundred milliseconds to save variables to EEPROM. Nice thing about the super capacitors is that unlike a battery they have essentially unlimited life. However, the discharge voltage follows the RC network rule, not like the more or less flat output from a battery. Jack K8ZOA On 12/1/2011 6:47 PM, ab2tc wrote: Hi all, Choosing EEPROM for nonvoatile storage was the right choice then and still is. Please don't even entertain a single thought about going back to a battery backed up RAM solution (remember PC BIOS settings in CMOS?). It has infinitely more problems than an EEPROM based solution. I really have no idea what people are complaining about. I don't think there are any products out there anymore relying on battery backed up CMOS RAM, thank God. There are many ways to improve (if improvements are indeed needed) the power loss reliability of non-volatile storage, such as fallback on a second copy should the first one fail (you do use checksums, right?) AB2TC - Knut wayne burdick wrote The K3 (like the K2 and our other rigs) uses EEPROM for nonvolatile parameter storage. This decision was based on several criteria, and we believe it was the right choice at the time. It's conceivable that in a future product we might go with battery-backed-up RAM. The MCU does try to write all changed parameters to EEPROM in the event of power disappearing suddenly; the electrolytic capacitors do hold up the MCU's voltage for some milliseconds. But your humble firmware guy is a lot happier when power is turned off at the radio first, allowing a clean shut-down sequence. Thanks for your tolerance of our various idiosyncrasies. 73, Wayne N6KR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@.qth This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- View this message in context: http://elecraft.365791.n2.nabble.com/KPA500-Feature-Request-tp7045355p7052755.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [KPA500] Rear power switch thread
Are we going full circle? Battery backed RAM was the thing when the IBM PC was announced (way back when), and then as technology progressed, that changed to EEPROM which did not require voltage to retain the settings. I hope we are not going back to that voltage dependent situation for the K3. As I recall from the IBM computer example, if the data was something different than the currently displayed frequency, it might be lost with the power outage example. 73, Don W3FPR On 12/1/2011 3:59 PM, Wayne Burdick wrote: The K3 (like the K2 and our other rigs) uses EEPROM for nonvolatile parameter storage. This decision was based on several criteria, and we believe it was the right choice at the time. It's conceivable that in a future product we might go with battery-backed-up RAM. The MCU does try to write all changed parameters to EEPROM in the event of power disappearing suddenly; the electrolytic capacitors do hold up the MCU's voltage for some milliseconds. But your humble firmware guy is a lot happier when power is turned off at the radio first, allowing a clean shut-down sequence. Thanks for your tolerance of our various idiosyncrasies. 73, Wayne N6KR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [KPA500] Rear power switch thread
Hi Don, If we did decide to use battery-backed up RAM in a product, it would be shadowed by an EEPROM, and both would be checksummed to ensure fail- safe operation. That seemed like overkill in 2007 when we were finalizing the parameter storage implementation for the K3. Wayne N6KR On Dec 1, 2011, at 4:07 PM, Don Wilhelm wrote: Are we going full circle? Battery backed RAM was the thing when the IBM PC was announced (way back when), and then as technology progressed, that changed to EEPROM which did not require voltage to retain the settings. I hope we are not going back to that voltage dependent situation for the K3. As I recall from the IBM computer example, if the data was something different than the currently displayed frequency, it might be lost with the power outage example. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [KPA500] Rear power switch thread [End of thread]
Folks - We've beaten this to death at this point ;-) Let's table this thread for now. 73, Eric List Moderator www.elecraft.com On 12/1/2011 4:18 PM, Wayne Burdick wrote: Hi Don, If we did decide to use battery-backed up RAM in a product, it would be shadowed by an EEPROM, and both would be checksummed to ensure fail- safe operation. That seemed like overkill in 2007 when we were finalizing the parameter storage implementation for the K3. Wayne N6KR On Dec 1, 2011, at 4:07 PM, Don Wilhelm wrote: Are we going full circle? Battery backed RAM was the thing when the IBM PC was announced (way back when), and then as technology progressed, that changed to EEPROM which did not require voltage to retain the settings. I hope we are not going back to that voltage dependent situation for the K3. As I recall from the IBM computer example, if the data was something different than the currently displayed frequency, it might be lost with the power outage example. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] How Can Memory access only VFO A?
If I come across a pileup I can't immediately break, and that happens a LOT, I just do a quick AB to store the DX frequency in VFO B and continue tuning the band. I can periodically check what's happening on his frequency with a press of the A/B key and call some more if I wish. If I don't get him then another A/B puts me back where I was. Repeat as needed. 73... Randy, W8FN __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KPQ100 bias adjustment
I'm moving on to the final alignment of my KAT100-2/KPA100 in an EC2 enclosure … split from a stock K2 … So far, so good. Some of the testing and alignment steps are confusing since the construction assumes one wants to build the KPA100 in the K2 body. And, since I did not put a speaker into the EC2. That said, I'm confused about the best measuring points for the bias current adjustment step on page 50 of Appendix G, Rev H KPA100 construction manual dated Sept, 2011. I'm trying to envision exactly where to clip the probes of my DMM. I could clip the positive (red) lead to the red lead at the back of the power supply. Then the black (negative) lead to the red (+) J3 connector That seems to be in parallel with the positive lead of the power cable … and the instructions clearly state in series … so, I am confused as to the best two locations to put the test leads. After getting to this point, I would hate to goof and let magic smoke out of the radio. Thanks in advance. gene WG7GW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPQ100 bias adjustment
That's right Eugene - just as it says in the manual but you have to disconnect the red wire of the power cable. The current flowing from the + side of the power supply goes through your DMM (set for a 10A current range) and on to the KPA100. If you have connectors attaching the wires to your power supply, you can open the fuse holder in the power cord, remove the fuse, and connect your DMM between the contacts for the fuse. 73, Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Eugene Worth Sent: Thursday, December 01, 2011 6:39 PM To: elecraft@mailman.qth.net Subject: [Elecraft] KPQ100 bias adjustment I'm moving on to the final alignment of my KAT100-2/KPA100 in an EC2 enclosure . split from a stock K2 . So far, so good. Some of the testing and alignment steps are confusing since the construction assumes one wants to build the KPA100 in the K2 body. And, since I did not put a speaker into the EC2. That said, I'm confused about the best measuring points for the bias current adjustment step on page 50 of Appendix G, Rev H KPA100 construction manual dated Sept, 2011. I'm trying to envision exactly where to clip the probes of my DMM. I could clip the positive (red) lead to the red lead at the back of the power supply. Then the black (negative) lead to the red (+) J3 connector That seems to be in parallel with the positive lead of the power cable . and the instructions clearly state in series . so, I am confused as to the best two locations to put the test leads. After getting to this point, I would hate to goof and let magic smoke out of the radio. Thanks in advance. gene WG7GW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPQ100 bias adjustment
Gene, You must connect the DMM in series with the power supply. Remove the positive lead from your power supply and connect the negative lead of your DMM to the power supply terminal, then connect the positive lead of your DMM to the + wire going to the KPA100. The instructions are written for the normal installation where the KPA100 is installed in place of the QRP top cover, but the same thing applies - adjust the bias so the current increase is 400 mA. I might suggest that you initially put the KPA100 on the K2 as called for in the instructions. Then when all is working normally, move the KPA100 to the EC2 enclosure; There is no need to complicate the picture by introducing extra variables into the situation. Keep everything as simple as possible during the bring up steps, and then add the necessary complexity after those basic steps have been taken and operation verified. 73, Don W3FPR On 12/1/2011 9:38 PM, Eugene Worth wrote: I'm moving on to the final alignment of my KAT100-2/KPA100 in an EC2 enclosure … split from a stock K2 … So far, so good. Some of the testing and alignment steps are confusing since the construction assumes one wants to build the KPA100 in the K2 body. And, since I did not put a speaker into the EC2. That said, I'm confused about the best measuring points for the bias current adjustment step on page 50 of Appendix G, Rev H KPA100 construction manual dated Sept, 2011. I'm trying to envision exactly where to clip the probes of my DMM. I could clip the positive (red) lead to the red lead at the back of the power supply. Then the black (negative) lead to the red (+) J3 connector That seems to be in parallel with the positive lead of the power cable … and the instructions clearly state in series … so, I am confused as to the best two locations to put the test leads. After getting to this point, I would hate to goof and let magic smoke out of the radio. Thanks in advance. gene WG7GW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] QRO KXPA100 Price Point?
I was wondering if a ballpark figure has been announced for the 100W amplifier? If so, what is the estimate? Scott, KB0KFX -- View this message in context: http://elecraft.365791.n2.nabble.com/QRO-KXPA100-Price-Point-tp7053597p7053597.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPQ100 bias adjustment
Thanks of Don and Ron! I've got the picture now. gene WG7GW On Dec 1, 2011, at 9:57 PM, Don Wilhelm wrote: Gene, You must connect the DMM in series with the power supply. Remove the positive lead from your power supply and connect the negative lead of your DMM to the power supply terminal, then connect the positive lead of your DMM to the + wire going to the KPA100. The instructions are written for the normal installation where the KPA100 is installed in place of the QRP top cover, but the same thing applies - adjust the bias so the current increase is 400 mA. I might suggest that you initially put the KPA100 on the K2 as called for in the instructions. Then when all is working normally, move the KPA100 to the EC2 enclosure; There is no need to complicate the picture by introducing extra variables into the situation. Keep everything as simple as possible during the bring up steps, and then add the necessary complexity after those basic steps have been taken and operation verified. 73, Don W3FPR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] How Can Memory access only VFO A?
I just do a quick AB to store the DX frequency in VFO B and continue tuning the band. That's all well and good, but it doesn't address the problem. I know exactly what Jim is talking about - I also use the memory keys to get back to the bottom of the band, and have often wished there was a way to preserve the frequency B too. Maybe the programmer-in-chief will have an idea. Ralph, VE7XF __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
