Re: [Elecraft] KPA-500 FCC docs
And has anyone noticed that the front panel indicators on the Alpha amp shown in the recent ads seem to show 1500 watts out, with pretty close to 2500 volts and 0.6 amps on the meters. WOW! !500 watts RF out for 1500 watts DC in. 100% efficiency!! There's a good mark for Wayne and Eric to shoot at. Maybe the key isn't the only place you can find a fruitcake! Ain't Photoshop cool? - Jim, KL7CC Leigh L. Klotz Jr WA5ZNU wrote: Did anyone else notice the Alpha ad in QST over Christmas showed a fruitcake on the key instead of a brick? Leigh/WA5ZNU __ 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] TAC PAC Wanted!
Okay Elecraft old timers when the k2’s were first produced their was a company www.mountain-ops.com (now defunct) that was making the black and orange tac paks for the k1’s and k2’s. I have one still but now that Im remoting my kpa100 in the ec2 I would like another when I want to bring 100watts to the field. So if anyone has one laying around in a corner collecting dust please consider sending it my way I will put it to use! Willing to pay for it with paypal any offers? John WT5Y w...@gt.rr.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] WANTED: KAT3, KFL3A-400, KBPF3
Hi, I want to upgrade my K3 with the KAT3 and the 400hz filter for the 2nd rx, if you want to sell either of those, please get in touch off-list. Also I have a KFL3A-1.8K that I don't strictly need, so if you need this, I'd be happy to do a part exchange. 73, Thomas 2E0ETT __ 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] OT DX Labs - DX Keeper
*I know I should go to the news group on Yahoo...BUT...I cannot stand the rubbish I seem to be bombarded with after I join one of their groups. Does anyone on the list use DX Keeper?...I cannot seem to save the logging screen the way I want it and would appreciate some assistance. Off reflector may be best to keep the noise level down to an acceptable roar :-) 73's Gary * -- *VK4FD - Motorhome Mobile Elecraft Equipment K3 #679, KPA-500 #018 Living the dream!!!* __ 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] KPA-500 FCC docs
I think that those of us who are not involved in MARS need an education about what you guys are doing. When I was in Army MARS about 35 years ago, we had no real traffic to handle at all. All we did was training. This was to be prepared - in case. I would think that the need for MARS (sadly) has not increased but rather diminished further due to increased 'normal' communication methods - Internet, cell phones, et al. Soldiers call home via Skype routinely from the battlefield - there's not a whole lot of reason for phone patches any more. Am I wrong? 73, Bob W5OV Ex- AAR2BQ -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Tim Tucker Sent: Tuesday, March 15, 2011 5:52 PM To: Bruce Beford Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA-500 FCC docs The amount of power required is a function of propagation and intended recipient. I can't say in advance of an *event*, how much power will be required. If 100 watts isn't cutting it on the first delivery attempt (it usually does), I'm not fooling around with 250 watts...I'm going straight to 500 if that's how much power I have available. There is no use the minimum amount of power requred... rules here. Rather, we use the tools we have available and methods within our SOP to get the message handled efficiently and accurately. MARS isn't a trial and error service. The real question is whether or not the 10 minute duty cycle is a function of heat or is it a timer / firmware controlled function? The first circumstance can be managed, however if duty cycle is controlled by the latter then it doesn't seem viable to the MARS service to me. Any insight into this question? Tim On Tue, Mar 15, 2011 at 3:29 PM, Bruce Beford bruce.bef...@myfairpoint.netwrote: I'm a licensed Navy MARS operator. It is not uncommon to have very long digital messages that need to be sent using digital modes that will take longer than 10 minutes to send. This limitation pretty much eliminates this amplifier from being able to be used in my shack for MARS purposes. Now with that said, we don't often need to use an amplifier to send digitally, but in the event I did, I couldn't do it with this amp if there is a 10 minute duty cycle. Tim AE6LX Turn.the.drive.down. You don't need to drive the amp to the full 500W output for your 10+ minute message. Perhaps 200-250W will do? -Bruce, N1RX __ 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 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] Out of Band Warning
Gents: 4A4A was booming on 160m this morning.. Attempted to work him in CW at 1.924. The K3 reported as being out of band. It will not allow ANY transmissions above 1.9 MHz. (CW or SSB).. I cannot find where to correct the settings for this.. Any help appreciated.. de W4CCS __ 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] KPA-500 FCC docs
The difference being that, with enough determination, the brick is edible.. 73 Mike NF4L On 3/16/2011 12:47 AM, Leigh L. Klotz Jr WA5ZNU wrote: Did anyone else notice the Alpha ad in QST over Christmas showed a fruitcake on the key instead of a brick? Leigh/WA5ZNU __ 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] Qrm on ssb net
Unfortunately, my investigative work started only after the Net closed down. But yes, David, someone should be able to document his transmissions in the future. I'll look tonight to see if I jotted down his call at the time. Terry, W0FM -Original Message- From: David Ferrington, M0XDF [mailto:m0...@alphadene.co.uk] Sent: Tuesday, March 15, 2011 1:53 PM To: Elecraft Reflector Subject: Re: [Elecraft] Qrm on ssb net So, can you record this with the KDVR3 and send it in? -- In our day and age it seems that Common Sense is in short supply. If you don't have any Common Sense - get some Common Sense and use it. If you can't find any Common Sense, ask for help from somebody who has some Common Sense. Is Common Sense divine? On 15 Mar 2011, at 18:01, Terry Schieler wrote: After hearing this guy messing with the Net several weeks ago, I followed up by doing a Google search of his call. Seems he is a well-documented rebel. Even the Commission has come down on him. I applaud Phil, NS7P for being so polite and professional during the interruptions. He is known to hang around 14.313. The reports of his abuses go back years, but I only first heard him during the Net operation a few weeks back. Again, everyone in the Elecraft group responds very appropriately and no one feeds this guy. It was VERY MUCH an intentional intrusion. __ 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: Mar 16 - Apr 16, 2011
~ N2CQ QRP CONTEST CALENDAR March 16 to April 16, 2011 ~ 80 METER FOXHUNT (CW) *** QRP Contest *** EST: Mar 15, 9 PM to 10:29 PM UTC: Mar 16, 0200z to 0329z Info: http://www.qrpfoxhunt.org/ ~ NAQCC Straight Key/Bug Sprint *** QRP CONTEST! *** EST: Mar 16, 8:30 PM to 10:30 PM UTC: Mar 17, 0030z to 0230z Rules: http://naqcc.info/contests.html ~ 40 METER FOXHUNT (CW) *** QRP Contest *** EST: Mar 17, 9 PM to 10:29 PM UTC: Mar 18, 0200z to 0329z Info: http://www.qrpfoxhunt.org/ ~ Ten-Ten Mobile QSO Party (CW/SSB) ... QRP Category Mar 19, 0001z to 2359z Rules: http://www.ten-ten.org/calendar.html ~ BARTG Spring RTTY Contest Mar 19, 0200z to Mar 21, 0200z Rules: http://www.bartg.org.uk/documents/Contests/HF/BARTG%20HF%20RTTY%20Contest%20rules%202011.pdf ~ Feld Hell Club Sprint (Feld Hell) ... QRP Category Mar 19, 12:00 to 2:00 PM Local Time Rules: http://sites.google.com/site/feldhellclub/Home ~ Russian DX Contest (SSB/CW) ... QRP Category Mar 19, 1200z to Mar 20, 1200z Rules: http://www.rdxc.org/asp/pages/rulesg.asp ~ Oklahoma QSO Party (CW/Digital/Phone) ... QRP Category Mar 19, 1300z to Mar 20, 0200z and Mar 20, 1300z to Mar 20, 1900z Rules: http://www.okdxa.org ~ AGCW VHF-UHF Contest (CW)...QRP Category Mar 19, 1400z to 1759z Rules: http://www.agcw.org/en/?Contests:VHF-UHF_Contest ~ North Dakota QSO Party (CW/PH) ... QRP Category Mar 19, 1800z to Mar 20, 1800z Rules: http://www.w0cq.com/ ~ Virginia QSO Party (CW/SSB/Dig) ... QRP Category Mar 19, 1800z to Mar 21, 0100z Rules: http://www.qsl.net/sterling/VA_QSO_Party/2011_VQP/2011_VQP_Main.html ~ RUN FOR THE BACON (CW) *** QRP CONTEST *** EDT: Mar 20, 9 PM to 11 PM UTC: Mar 21, 0100z 0300z Rules: http://www.fpqrp.com/ ~ UBA Foxhunt (CW/PSK31/SSB) *** QRP Contest *** Mar 21, 1930z to 2030z Rules: http://www.on5ex.be/foxhunt/foxhunt.html ~ SKCC Sprint (Straight Key CW) ... QRP Awards Mar 23, z to 0200z Rules: http://www.skccgroup.com/sprint/sks/ ~ CQ World-Wide WPX Contest (SSB) ... QRP Category Mar 26, z to Mar 27, 2359z Rules: http://www.cqwpx.com/index.htm ~ Spring QRP Homebrewer Sprint (CW/PSK31) ... QRP Contest UTC: Mar 28, z to 0400z EDT: Mar 27, 8PM to Midnight EDT) Rules: http://www.njqrp.org/data/qrphomebrewersprint.html ~ UBA Foxhunt (CW/PSK31/SSB) *** QRP Contest *** Mar 28, 1930z to 2030z Rules: http://www.on5ex.be/foxhunt/foxhunt.html ~ SECOND CLASS OPERATOR'S CLUB CW BASH (CW) QRP Mostly Apr 2, z to 2359 Info: http://www.qsl.net/soc/k8dd_bash.htm ~ LZOCC 40m CW Sprint ... QRP Category Apr 2, 0400z to 0800z Rules: http://www.lzopen.com/lzocc40/indexF.htm ~ QRP HOURS CONTEST (CW/PSK31/RTTY/SSB) *** QRP Contest *** Apr 2, 1000-1159 UTC Rules: http://home.exetel.com.au/auriga/AR/QRP/QRP_Hours.html ~ QRP ARCI Spring QSO Party (CW) ..QRP Contest!!! Apr 2, 1200z to Apr 3, 2359z Rules: http://www.qrparci.org/content/view/8347/118/ ~ SP DX Contest (CW/SSB) ... QRP Category Apr 2, 1500z to Apr 3, 1500z Rules: http://www.spdxcontest.info/reg/spdxc_g.pdf ~ EA RTTY Contest Apr 2, 1600z to Apr 3, 1600z Rules: http://www.ure.es/contest/430-ea-rtty-contest.html ~ Missouri QSO Party (ALL) ... QRP Category (MO Only) Apr 2, 1800z to Apr 3, 0500z Apr 3, 1800z to Apr 3, 2359z Rules: http://www.w0ma.org/mo_qso_party.htm ~ UBA Foxhunt (CW/PSK31/SSB) *** QRP Contest *** Apr 4, 1930z to 2030z Rules: http://www.on5ex.be/foxhunt/foxhunt.html ~ Adventure Radio
Re: [Elecraft] TAC PAC Wanted
Have you thought of using one of Rose's protective carry-cases? Good stuff. http://tinyurl.com/7lm3m5 elecraftcov...@gmail.com 73 Dave G3TJP __ 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 Hi current display
Scott; Thanks, I guess I'll have to wait until Gary gets back. My voltage readings are all OKand I've tried a reload of the firmware 3 times with no luck. Russ N3CO - Original Message - From: Scott Ellington sdell...@facstaff.wisc.edu To: Russ eru...@att.net Sent: Tuesday, March 15, 2011 4:04 PM Subject: Re: [Elecraft] K3 Hi current display Russ, Gary is out of town for a few days. If your other voltages are reading OK (12 V, SWR, etc.), I would suspect a firmware problems. (I've had to reload the MCU code on my K3 a couple times to fix other problems.) I also had some trouble with a KPAIO3 board that was reading KPA3 current way too high. Replacing the board solved that problem. In your case, with the KPA3 removed, or power set below 12W, the K3 shouldn't even be looking at the KPAIO3 sensor. 73, Scott K9MA On Mar 15, 2011, at 2:43 PM, Russ wrote: I recently repaired my K3 LPA by replacing one of the output MOSFETS and making other modifications per Gary Surrency. I had to re-adjust the bias on the finals using an external ammeter and was able to complete that successfully. The LPA now puts out the full 12W. However, the front panel display shows that the K3 is always drawing aroung 24A when I know it is less than 1A on the external meter. The reading is the same whether or not I have the KPA3 installed. I still haven't had a response from Gary so I thought I'd ask if anyone else has seen this. I have checked the output of the current sense U1 and it is correct. Anyone have any ideas??? Thanks, Russ N3CO Scott Ellington Madison, Wisconsin USA __ 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] Out of Band Warning
Strange, mine works fine there. I wish I had caught him on 160 CW! Rick K6LE On 3/16/2011, at 4:57 , W4CCS wrote: Gents: 4A4A was booming on 160m this morning.. Attempted to work him in CW at 1.924. The K3 reported as being out of band. It will not allow ANY transmissions above 1.9 MHz. (CW or SSB).. I cannot find where to correct the settings for this.. Any help appreciated.. de W4CCS __ 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] [OT] MARS purpose (was KPA-500 FCC docs)
Department of Defense (DoD) Instruction 4350.02 dated 12/23/2009 changed the mission of MARS significantly. It is now no longer a service geared toward facilitating health and welfare traffic for military employees (which included phone patches) because that mission is obsolete. Instead, it's primary mission is to provide a contingency radio communications support to the U.S. Government and civil authorities. Basically, MARS is attempting to be THE most well trained and reliable HF emergency communications organization available. Here is an excerpt from the DoD Instruction that changed the MARS mission: 4. POLICY. It is DoD policy that: a. MARS capability for contingency radio communications support to U.S. Government operations shall be provided through the utilization of organized volunteer radio operators and operating facilities under the appropriate authorities, as directed by and coordinated within the Department of Defense. b. MARS shall provide contingency radio communications support to the DoD Components. c. MARS shall provide contingency radio communications support to civil authorities at all levels, in fulfillment of DoD responsibilities under DoDD 5111.13 (Reference (d)). d. MARS shall provide health, morale, and welfare radio communications support to military members, civilian employees and contractors of DoD Components, and civil agency employees and contractors, when in remote or isolated areas, in contingencies or whenever appropriate. An example of a recent exercise that was at a Naval base involved a scenario where there was a terrorist attack on the base. A MARS unit was deployed to the base to participate where they demonstrated a capability for relaying digital SITREP messages from the base ECOM center using a notebook PC and VHF radio to the base MARS HF station which then relayed them into the MARS Winlink system for delivery to their intended destination out of State. Speed, accuracy, and reliability are the important training elements. Hope that helps some. Tim On Wed, Mar 16, 2011 at 3:57 AM, Bob Naumann w...@w5ov.com wrote: I think that those of us who are not involved in MARS need an education about what you guys are doing. When I was in Army MARS about 35 years ago, we had no real traffic to handle at all. All we did was training. This was to be prepared - in case. I would think that the need for MARS (sadly) has not increased but rather diminished further due to increased 'normal' communication methods - Internet, cell phones, et al. Soldiers call home via Skype routinely from the battlefield - there's not a whole lot of reason for phone patches any more. Am I wrong? 73, Bob W5OV Ex- AAR2BQ __ 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]And the question is ...
A European model will be required: we don't have the gain restriction you have, however, we do like stability and putting lots of gain into one box could be tricky. David G3UNA - Original Message - From: Phil Townsend phi...@mac.com To: Bruce Beford bruce.bef...@myfairpoint.net Cc: elecraft@mailman.qth.net Sent: Tuesday, March 15, 2011 9:31 PM Subject: Re: [Elecraft] [KPA500]And the question is ... I'll do it! Just send me a KPA500 and I am good to go! Phil Santa Fe On Mar 15, 2011, at 3:16 PM, Bruce Beford wrote: Mark wrote: Who is going to calculated alternate replacement values of the resistors in the two attenuators so that the KPA500 may be driven to a full 500 watts by a K3 / 10? Mark, NØOKS You are, if you intend to try this on your new KPA-500. -Bruce, N1RX __ 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] KPA500 Power Gain
On 3/16/2011 11:02 AM, David Cutter wrote: A European model will be required: It might be NICE to be able to drive it at lower power, but I don't understand why it is REQUIRED. It would be NICE to be able to drive it to rated power from a barefoot K3/10 (or K2/10), but that could push the driver to the point where it produces a bit more IM and THD (that is, splatter and harmonics). That's the main reason that firmware for the K3/100 now limits output power to 110 watts. we don't have the gain restriction you have, however, we do like stability and putting lots of gain into one box could be tricky. The Elecraft design engineers are quite sharp, and have carefully thought quite things like this. As a result of my own EE background and ongoing conversations with one of them who is a neighbor (and a serious contester), I'm firmly convinced that they have made a very intelligent set of design decisions about these issues. The last thing our ham bands need is more loud lids spewing trash. 73, Jim K9YC __ 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 Power Gain
Well, it's NICE that you can see the tongue firmly in my cheek, Jim. I presume the others on this thread are thinking the same way. 73 David G3UNA On 3/16/2011 11:02 AM, David Cutter wrote: A European model will be required: It might be NICE to be able to drive it at lower power, but I don't understand why it is REQUIRED. It would be NICE to be able to drive it to rated power from a barefoot K3/10 (or K2/10), but that could push the driver to the point where it produces a bit more IM and THD (that is, splatter and harmonics). That's the main reason that firmware for the K3/100 now limits output power to 110 watts. we don't have the gain restriction you have, however, we do like stability and putting lots of gain into one box could be tricky. The Elecraft design engineers are quite sharp, and have carefully thought quite things like this. As a result of my own EE background and ongoing conversations with one of them who is a neighbor (and a serious contester), I'm firmly convinced that they have made a very intelligent set of design decisions about these issues. The last thing our ham bands need is more loud lids spewing trash. 73, Jim K9YC __ 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] Need early adopters for K3 updates (QRQ cancel on SPLIT, FM REV sticky, higher mic preamp gain, APF tap...)
Hi Wayne, Would appreciate a copy of the new K3 code. Thanks, Palmer W7NMD _ From: wayne burdick [via Elecraft] [mailto:ml-node+6175377-546845060-157...@n2.nabble.com] Sent: Wednesday, March 16, 2011 12:57 AM To: pcbyrne Subject: Need early adopters for K3 updates (QRQ cancel on SPLIT, FM REV sticky, higher mic preamp gain, APF tap...) Hi all, I just gave new K3 code to our field testers (see release notes below). If you have a keen interest in one or more of the changes, please email me and I'll get you a copy, too. 73, Wayne N6KR snip -- View this message in context: http://elecraft.365791.n2.nabble.com/I-did-it-again-tp6171709p6178486.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 Power Gain
The question is: Is it feasible to improve the KPA500 to full output with k3/10. Why should someone in Europe invest into the 100W PA if it is possible? 73, István Szabó On 3/16/2011 8:03 PM, David Cutter wrote: Well, it's NICE that you can see the tongue firmly in my cheek, Jim. I presume the others on this thread are thinking the same way. 73 David G3UNA On 3/16/2011 11:02 AM, David Cutter wrote: A European model will be required: It might be NICE to be able to drive it at lower power, but I don't understand why it is REQUIRED. It would be NICE to be able to drive it to rated power from a barefoot K3/10 (or K2/10), but that could push the driver to the point where it produces a bit more IM and THD (that is, splatter and harmonics). That's the main reason that firmware for the K3/100 now limits output power to 110 watts. we don't have the gain restriction you have, however, we do like stability and putting lots of gain into one box could be tricky. The Elecraft design engineers are quite sharp, and have carefully thought quite things like this. As a result of my own EE background and ongoing conversations with one of them who is a neighbor (and a serious contester), I'm firmly convinced that they have made a very intelligent set of design decisions about these issues. The last thing our ham bands need is more loud lids spewing trash. 73, Jim K9YC __ 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 Power Gain
For portable use without mains power - 100W on batteries works fine. 73 de M0XDF, K3 #174, P3 #108 -- Sometimes I wonder whether the world is being run by smart people who are putting us on or by imbeciles who really mean it. -Mark Twain, author and humorist (1835-1910) On 16 Mar 2011, at 20:17, István Szabó wrote: The question is: Is it feasible to improve the KPA500 to full output with k3/10. Why should someone in Europe invest into the 100W PA if it is possible? __ 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 Power Gain
On 3/16/2011 1:17 PM, István Szabó wrote: Is it feasible to improve the KPA500 to full output with k3/10. Why should someone in Europe invest into the 100W PA if it is possible? Please go back and read what I wrote. 73, Jim K9YC __ 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] KPA500
__ 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 Power Gain
Regardless of FCC requirements, it is not feasible or desirable to modify the KPA500 for lower power drive with a 10W exciter. Any modification of the input network to the KPA500 will seriously degrade the input SWR to the amplifier and also will put the KPA500 transistors at a strong risk of destruction from accidental over drive. Our protection circuitry and firmware are tightly integrated to provide a very reliable bullet-proof design. 73, Eric WA6HHQ __ 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]And the question is ...
Agreed. 73, Eric On 3/16/2011 11:02 AM, David Cutter wrote: we don't have the gain restriction you have, however, we do like stability and putting lots of gain into one box could be tricky. David G3UNA __ 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] Elecraft SSB report (3/13/11)
On 3/15/2011 10:15 PM, Phillip Shepard wrote: This week, if we have more interference, can those of you with rotatable antennas please try to get a bearing on the interfering signal. The bad actor is Karol Madera, VK7KFM, in British, Columbia. He is notorious for his antics, usually in the 14.272-14.275, and at other times on 14.313. Search for his callsign for the sordid details. It may be advisable to find another frequency for the net because this guy loves confrontation in all it's forms and Canadian rules enforcement is non-existent. Gus Hansen KB0YH __ 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] KPA500 Power Gain
Agreed and the sale of KPA3 and KPA100 will be maintained as well. On the other hand, I would like to have stainless steel screws in KPA500 as a standard provision. Summer in Hong Kong is very humid. I have already changed all the screws in my K3 with SS so as to avoid rusting. cheers, Johnny VR2XMC 寄件人﹕ Jim Brown j...@audiosystemsgroup.com 收件人﹕ elecraft@mailman.qth.net 傳送日期﹕ 2011/3/17 (四) 2:58:08 AM 主題： [Elecraft] KPA500 Power Gain On 3/16/2011 11:02 AM, David Cutter wrote: A European model will be required: It might be NICE to be able to drive it at lower power, but I don't understand why it is REQUIRED. It would be NICE to be able to drive it to rated power from a barefoot K3/10 (or K2/10), but that could push the driver to the point where it produces a bit more IM and THD (that is, splatter and harmonics). That's the main reason that firmware for the K3/100 now limits output power to 110 watts. we don't have the gain restriction you have, however, we do like stability and putting lots of gain into one box could be tricky. The Elecraft design engineers are quite sharp, and have carefully thought quite things like this. As a result of my own EE background and ongoing conversations with one of them who is a neighbor (and a serious contester), I'm firmly convinced that they have made a very intelligent set of design decisions about these issues. The last thing our ham bands need is more loud lids spewing trash. 73, Jim K9YC __ 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] Elecraft SSB report (3/13/11)
I'm certain you meant VE7KFM, who indeed has a long and sordid history on the air. There are some other equally degenerate individuals on the U.S. side of the border (seemingly equally immune to enforcement) who sometimes pirate his callsign to generate their own malicious interference, though, so it's pretty difficult to reliably attribute anything to anyone. 73, Dave AB7E On 3/16/2011 5:37 PM, Augie Gus Hansen wrote: On 3/15/2011 10:15 PM, Phillip Shepard wrote: This week, if we have more interference, can those of you with rotatable antennas please try to get a bearing on the interfering signal. The bad actor is Karol Madera, VK7KFM, in British, Columbia. He is notorious for his antics, usually in the 14.272-14.275, and at other times on 14.313. Search for his callsign for the sordid details. It may be advisable to find another frequency for the net because this guy loves confrontation in all it's forms and Canadian rules enforcement is non-existent. Gus Hansen KB0YH __ 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] Elecraft SSB report (3/13/11)
On 3/16/2011 6:49 PM, David Gilbert wrote: I'm certain you meant VE7KFM, who indeed has a long and sordid history on the air. There are some other equally degenerate individuals on the U.S. side of the border (seemingly equally immune to enforcement) who sometimes pirate his callsign to generate their own malicious interference, though, so it's pretty difficult to reliably attribute anything to anyone. 73, Dave AB7E Thanks for catching my typing error Dave. (I don't see an entry for a VK7KFM, so I'm thankful that no personal apology is needed.) Gus __ 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] KPA-500 FCC docs
On 16/03/2011 05:26, Gary Gregory wrote: *We have lots of fruitcakes in VK - some have an amateur license !!! But not many have KPA500's yet ;-) -- 73 Brendan EI6IZ __ 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] Elecraft SSB report (3/13/11)
Guys, he's a fruitcake. There are two little known laws in physics: 1) Conservation of Fruitcake: All the fruitcake in the universe was created at the Big Bang. You can neither create nor destroy it, it just moves from home to home. 2) Applied to individuals, it is like entropy, and they just persist and sometimes increase. I don't check into the net, SSB is a struggle for me, but I'd just move and be done with him. 73, Fred K6DGW - Northern California Contest Club - CU in the 2011 Cal QSO Party 1-2 Oct 2011 - www.cqp.org On 3/16/2011 5:49 PM, David Gilbert wrote: I'm certain you meant VE7KFM, who indeed has a long and sordid history on the air. There are some other equally degenerate individuals on the U.S. side of the border (seemingly equally immune to enforcement) who sometimes pirate his callsign to generate their own malicious interference, though, so it's pretty difficult to reliably attribute anything to anyone. __ 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] KPA-500 FCC docs
Hey, take it easy on my favorite flavor of biscuit 73, Guy. On Wed, Mar 16, 2011 at 9:17 PM, Brendan Minish ei6iz.bren...@gmail.comwrote: On 16/03/2011 05:26, Gary Gregory wrote: *We have lots of fruitcakes in VK - some have an amateur license !!! But not many have KPA500's yet ;-) -- 73 Brendan EI6IZ __ 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] Elecraft SSB report (3/13/11)
In ECOM we have alternate frequencies for just such occurrences. If the offender does not respond to a polite query to cease and desist we move to freq A. That normally rids us of the problem. Kevin. KD5ONS On Wed, 16 Mar 2011 18:56:15 -0700, Fred Jensen k6...@foothill.net wrote: Guys, he's a fruitcake. There are two little known laws in physics: 1) Conservation of Fruitcake: All the fruitcake in the universe was created at the Big Bang. You can neither create nor destroy it, it just moves from home to home. 2) Applied to individuals, it is like entropy, and they just persist and sometimes increase. I don't check into the net, SSB is a struggle for me, but I'd just move and be done with him. 73, Fred K6DGW - Northern California Contest Club - CU in the 2011 Cal QSO Party 1-2 Oct 2011 - www.cqp.org On 3/16/2011 5:49 PM, David Gilbert wrote: I'm certain you meant VE7KFM, who indeed has a long and sordid history on the air. There are some other equally degenerate individuals on the U.S. side of the border (seemingly equally immune to enforcement) who sometimes pirate his callsign to generate their own malicious interference, though, so it's pretty difficult to reliably attribute anything to anyone. __ 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 -- Using Opera's revolutionary e-mail client: http://www.opera.com/mail/ __ 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
