Re: [Elecraft] DIY DSP Rev D
I guess another option could be to take your old board out of the radio and send it to Elecraft for a factory update and wait for it's return. Of course this would render the radio inoperable for that period of time but at least you would know that your serial number vintage DSP board matched your serial numbered radio. I think the current board swap program makes a lot of sense but maybe that's just me. 73, Mike AB9V Don Wilhelm wrote: Merv, I don't understand that logic. See Eric's post from 9:08 PM EST today. What is wrong with getting a fully updated DSP board with a full warranty to put into your SN 3000 K3. Who cares what the serial number of the K3 that board came from, it is a *new* board after it has been upgraded and fully tested - there is no difference. The board PC traces and the solder do not wear out. If yours has been on order for 5 weeks, it should arrive soon. 73, Don W3FPR Merv Schweigert wrote: Bob Naumann wrote: Who said they might even be reworked boards? On what do you base this claim? Somewhere either on this list or the elecraft site or ?? I read that the boards were shipping up to 4 to 6 weeks late because of the slow return of the old ones for rework. So yes it appears your getting a reworked board from someones return. So I would assume you could get serial number 20 board for your number 3000 radio? If wrong would appreciate being corrected. Mine has been on order for about 5 weeks or so now. 73 Merv KH7C __ 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] [K3] K3 DSP LPF daughterboard - What is an artifact and where can you find them?
Keith Hamilton-3 wrote: I would imagine there are a lot of us who hear the artifacts but just don't realize it? This would account for the undefinable fatigue some talk about. You can see these artifacts with a program like Spectran, but they are only present when modulation is present and they are at a very low level, probably no worse than the THD of budget consumer audio products. As someone said to me in an email recently, they probably wouldn't be an issue if people used communications headphones and speakers with their radios instead of hi-fi models. - Julian, G4ILO. K2 #392 K3 #222. * G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html -- View this message in context: http://n2.nabble.com/K3-DSP-LPF-daughterboard-What-is-an-artifact-and-where-can-you-find-them-tp4244576p4245639.html Sent from the [K3] 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] Wanted: Options for Elecraft K3 (Filters, ATU...)
Hello! I am looking for some options for my K3. KAT3 Tuner, KBPF3 General Coverage RX Bandpass Module, KDVR3 Digital Voice Recorder, KTCXO3-1 TCXO, KXV3A RX Ant., IF Out and Xverter Interface (last Version), KFL3A-2.8K 2.8 kHz, 8-pole filter, KFL3A-400 400 Hz, narrow 8-pole filter, KFL3A-250 250 Hz, narrow 8-pole filter etc.. Thanks 73s Alex NH7VW -- Preisknaller: GMX DSL Flatrate für nur 16,99 Euro/mtl.! http://portal.gmx.net/de/go/dsl02 __ 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] Rig Rumbles?
Hi Gary And who can forget all the arguments on the Icom group web pages. It sounded like what has gone on here. The Icom no rumble deniers were out in force. Anyway Icoms have no rumbles or IMD now and have good inband IMD performance. The only thing I dont like about the Icoms now is their transmit sound. They have such a robotic SSB sound thats very easy for me to detect. It reminds of the Daleks on the Dr Who TV show. The 756PRO3 and 7600 have this sound, not the 7700 and 7800. I agree with your sentiments on the K3, people should just get with the program and go along with the K3 ride. DSP code and hardware is not carved in rock! John --- On Sat, 1/2/10, Gary and Kathleen Pearse pea...@gci.net wrote: From: Gary and Kathleen Pearse pea...@gci.net Subject: [Elecraft] Rig Rumbles? To: Elecraft@mailman.qth.net Date: Saturday, January 2, 2010, 9:31 PM Earlier, rumbles were mentioned along with artifacts and all manner of audible squeaks and chirps generally hidden in the K3. I thought I had finally fully recovered from my IC-756 experience, and now this issue reminds me of that old unpleasantness. Background: I like ICOMs and have owned or operated very many including the all 756 series through Pro II. My early Pro had low level rumbles/artifacts, barely audible in quality headsets on a quiet band. I reported same to my Dealer, ICOM, and finally the ARRL during their initial testing. Read their review for a discussion of that discovery. It was really there but at a low level, and thanks to a couple of gifted HAMs, the source was discovered and remedies suggested. ICOM denied the issue in written and spoken coms to me and others (I sent mine in for an ICOM checkup, and no problems were noted). They later fixed it by offering us a new improved model that was rumble-free, the new Pro II. It was an expensive repair to say the least versus potentially what could have been a few changes in circuit components. Patience, and reconsider any suspicions surrounding Elecraft's continuing development policy. Their improved DSP board is a relatively free gift compared with buying a complete new radio as ICOM once offered the amateur community. Thanks to it's design, the K3 platform is simply a work in progress. I'm looking forward to additional upgrades by Elecraft as time goes by and the K3 evolves. That's one reason why I decided to support our American company with my $. Thanks for your time. 73, Gary NL7Y __ 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] [K3] K3 DSP LPF daughterboard - What is an artifact and where can you find them?
there are few if any pairs of 'communications' phones that have significant attenuation above 10Khz yet retain good flat frequency response over the range we are interested in (~ 100Hz to 4KHz ) the artefacts are aliasing products centred around 12Khz, since these are not harmonically related to the fundamental audio the ear is pretty sensitive to them, even though they are at least 60dB lower than the wanted audio. As I have pointed out before, It's subtle, you are not going to hear this at all if you have HF hearing loss, the D to A chip is performing per spec and the K3 prior to this change is already better than a lot of the competition. 73 Brendan EI6IZ On Sun, 2010-01-03 at 03:20 -0800, Julian, G4ILO wrote: Keith Hamilton-3 wrote: I would imagine there are a lot of us who hear the artifacts but just don't realize it? This would account for the undefinable fatigue some talk about. You can see these artifacts with a program like Spectran, but they are only present when modulation is present and they are at a very low level, probably no worse than the THD of budget consumer audio products. As someone said to me in an email recently, they probably wouldn't be an issue if people used communications headphones and speakers with their radios instead of hi-fi models. - Julian, G4ILO. K2 #392 K3 #222. * G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html -- 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] [K3] K3 on 500 kHz
Hello Dick, I was immediately thinking of you when 500kc permission in NL got through, it must feel very special to key-down on your old band :-) A good option for 500kc is the Juma kit: http://www.nikkemedia.fi/juma-tx500/ With a few mods (extra i/o's) it might be an elegant solution with the K3. Happy 2010! 73' Paul PD0PSB PA3CW wrote: Hello k3 Nabblers, I was happy surprized that now in The Netherlands we are also allowed to use 501 - 504 kHz in an experimental phase. As ex Radio Officer it has been around 25 years ago since my last transmission in this band! I was happy to discover that my K3 is very ok for receive on 500 kHz. For transmitting the 0,5 mW on the transperter output needs some work. We are allowed here to transmit with 5 W EIRP so i think i can use some output power in order to radiate this amount of power in a relatively short antenna. Who has made an amplifier for 500 kHz including ant switching circuit? I am very interested in a design that i can copy and build myself. Maybe also the team of Elecraft is working on something, however seen how busy they are with other things i dont think this has priority. Who can tell me their experience with the K3 on 500? Many thanks and a wonderful 2010 Dick PA3CW -- View this message in context: http://n2.nabble.com/K3-on-500-kHz-tp4245663p4245922.html Sent from the [K3] 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] P3 getting closer
Indeed! And at the rate you're STRIKING it rich, you might end up with enough to buy a SPARE! I've heard that this is an excellent arrangement when operating SPLIT. Sorry... :-) Bill W5WVO - Original Message - From: Mike n...@nf4l.com Cc: 'Reflector Elecraft' elecraft@mailman.qth.net Sent: Friday, January 01, 2010 5:57 PM Subject: Re: [Elecraft] P3 getting closer I think it will bowl you over... 73, Mike NF4L Bruce McLaughlin wrote: It sounds like a P3 may be right up your alley . . . so to speak, Bruce - W8FU -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bob Tellefsen Sent: Friday, January 01, 2010 6:19 PM To: Reflector Elecraft Subject: [Elecraft] P3 getting closer On Christmas Eve morning I bowled in a tournament, and won $45. Then today I bowled in another tournament and won $55. So now I'm $100 closer to a P3. I may have it paid for by the time it's released :-) 73, Bob N6WG The Little Station with Attitude __ 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 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] K3 DSP LPF daughterboard - What is an artifact and where can you find them?
Brendan, Not to be argumentative, but some with HF hearing loss may be bothered by this distortion even though it is low level and is not in the range of conscious hearing. When I first became aware of my HF hearing loss, I found that I was increasingly irritated by low grade audio devices because of the THD. It seems I can 'sense' the distortion even though I cannot actually hear in that range. Strange as it may seem, I went on a quest for better fidelity in sound as my hearing loss became worse. I have mentioned this phenomenon to several knowledgeable dealers in audio equipment as well as my audiologist and they have confirmed what I have observed. If the hearing loss is across the full spectrum, the increased perception of distortion is not present. My lower range hearing remains normal, and my audiologist tells me that is an unusual condition, so that may have something to do with my perceptions. I will put the LPF on my K3, 'just in case'. 73, Don W3FPR. Brendan Minish wrote: As I have pointed out before, It's subtle, you are not going to hear this at all if you have HF hearing loss, the D to A chip is performing per spec and the K3 prior to this change is already better than a lot of the competition. __ 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] K3 on 500 kHz
Another link: http://www.w1vd.com/137-500KWTX.html Wes N7WS --- On Sun, 1/3/10, pd0psb p.s.bijp...@gmail.com wrote: From: pd0psb p.s.bijp...@gmail.com Subject: Re: [Elecraft] [K3] K3 on 500 kHz To: elecraft@mailman.qth.net Date: Sunday, January 3, 2010, 6:35 AM Hello Dick, I was immediately thinking of you when 500kc permission in NL got through, it must feel very special to key-down on your old band :-) A good option for 500kc is the Juma kit: http://www.nikkemedia.fi/juma-tx500/ With a few mods (extra i/o's) it might be an elegant solution with the K3. Happy 2010! 73' Paul PD0PSB PA3CW wrote: Hello k3 Nabblers, I was happy surprized that now in The Netherlands we are also allowed to use 501 - 504 kHz in an experimental phase. As ex Radio Officer it has been around 25 years ago since my last transmission in this band! I was happy to discover that my K3 is very ok for receive on 500 kHz. For transmitting the 0,5 mW on the transperter output needs some work. We are allowed here to transmit with 5 W EIRP so i think i can use some output power in order to radiate this amount of power in a relatively short antenna. Who has made an amplifier for 500 kHz including ant switching circuit? I am very interested in a design that i can copy and build myself. Maybe also the team of Elecraft is working on something, however seen how busy they are with other things i dont think this has priority. Who can tell me their experience with the K3 on 500? Many thanks and a wonderful 2010 Dick PA3CW __ 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] [K1] Building a K1 no side tone
I should of said I am on Page 36 of the Alignment and Test Part 1 so I think that there is no output, I will check the board anyway, you never know. At first I did find some points not soldered and took care of them. Still checking and killing brain cells. Not sure if the display goes blank when you are transmitting or still displays the frequency that you are on. I was thinking ground or short but the backlight stayed on. Rick/WA6ES Don Wilhelm-4 wrote: Rick, An additional thought - that blank display when keyed could be an indicator of a bad solder connection in the DC supply section of the K1. You are apparently capable of searching through the schematic, so start at the 12 volt input and check all the points up through the regulators for good solder connections. Re-flow those connections with a hot (750 deg F) soldering iron and see if you find any improvement. My guess, one or more of the voltages is reading fine in receive, but the higher current draw when the key is depressed (transmit mode) is causing one of the voltages to sag to less than normal - a bad solder connection could cause that. 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 -- View this message in context: http://n2.nabble.com/Building-a-K1-no-side-tone-tp4244892p4246091.html Sent from the [K1] 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] [K3] K3 on 500 kHz
This one will certainly be able to deliver 5W EIRP, Wes :-) Nice design! 73' Paul PD0PSB Another link: http://www.w1vd.com/137-500KWTX.html Wes N7WS A good option for 500kc is the Juma kit: http://www.nikkemedia.fi/juma-tx500/ With a few mods (extra i/o's) it might be an elegant solution with the K3. -- View this message in context: http://n2.nabble.com/K3-on-500-kHz-tp4245663p4246118.html Sent from the [K3] 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] [K1] Building a K1 no side tone
Rick, The K1 display changes to a simulated bargraph to indicate the power output when keyed. You will not have any power output at this stage of assembly, so your statement of a 'blank display' may be just fine. Since the backlight stays on during keying, I should retract my statement about a power problem. The most likely reason for no sidetone is soldering - check to see if all points are well soldered and none skipped. You do have the AF Gain advanced do you not? The K1 sidetone varies with the AF Gain setting. The source of the sidetone is the output from the DAC on the Front Panel, U2 pin 1. If you have an oscilloscope, you could check to see if you have an audio signal there when the K1 is keyed. Lacking a 'scope, connect a pair of leads to an audio amplifier input (line in of a computer soundcard or an MP3/CD player) and probe at that point to see if there is any sound - it might not sound great, but you will know if the signal is present. The signal leaves the front panel via J1 pin 5. Look at the schematic for the RF Board sheet 1 in the lower left corner and you will see the components that the sidetone signal (XFIL/TONE) are applied to. It makes it way to the AF Amp through the AF Gain control. You should hear some 'white noise' sound when the AF Gain is advanced. If the audio is totally silent, you may have a problem with the AF Amp rather than the sidetone. 73, Don W3FPR Rick/WA6ES wrote: I should of said I am on Page 36 of the Alignment and Test Part 1 so I think that there is no output, I will check the board anyway, you never know. At first I did find some points not soldered and took care of them. Still checking and killing brain cells. Not sure if the display goes blank when you are transmitting or still displays the frequency that you are on. I was thinking ground or short but the backlight stayed on. Rick/WA6ES __ 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] radio control and CW interface
Hi HNY!! In my TS850 I have a W1GEE interface connected in my LPT port to send CW and a G4ZLP Cat interface to do radio control, with N1MM and Win-Test. With the K3, wich cables interface may I use to send CW and to control the radio with N1MM and Win-Test? Thanks! 73, Jorge CX6VM/CW5W __ 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] P3 getting closer
Oww! Oww! Oww! My head is starting to split. Enough already :-) 73, Bob N6WG - Original Message - From: Bill W5WVO w5...@cybermesa.net To: n...@nf4l.com Cc: 'Reflector Elecraft' elecraft@mailman.qth.net Sent: Sunday, January 03, 2010 5:44 AM Subject: Re: [Elecraft] P3 getting closer Indeed! And at the rate you're STRIKING it rich, you might end up with enough to buy a SPARE! I've heard that this is an excellent arrangement when operating SPLIT. Sorry... :-) Bill W5WVO - Original Message - From: Mike n...@nf4l.com Cc: 'Reflector Elecraft' elecraft@mailman.qth.net Sent: Friday, January 01, 2010 5:57 PM Subject: Re: [Elecraft] P3 getting closer I think it will bowl you over... 73, Mike NF4L Bruce McLaughlin wrote: It sounds like a P3 may be right up your alley . . . so to speak, Bruce - W8FU -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bob Tellefsen Sent: Friday, January 01, 2010 6:19 PM To: Reflector Elecraft Subject: [Elecraft] P3 getting closer On Christmas Eve morning I bowled in a tournament, and won $45. Then today I bowled in another tournament and won $55. So now I'm $100 closer to a P3. I may have it paid for by the time it's released :-) 73, Bob N6WG The Little Station with Attitude __ 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 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] [K3] K3 on 500 kHz
The thing to watch with class D amps is that the Keying waveform will be significantly modified (Rise and fall Times) and this could lead to keyclicks by distorting the K3's keying waveform . Mostly Class D amps are keyed at the Finals for this reason. I am using my K3 on 500KHz in conjunction with an old NDB amplifier. this AMP was low level Carrier + sideband followed by linear PA stages to 100W. I use it as a linear for my K3 Do take special care to protect the Transverter RX input to the K3 if operating on 500 KHz as it's not as comprehensively protected from strong signals as the the RX antenna input 73 Brendan EI6IZ (some of us in EI are on 501 -504 KHz ) On Sun, 2010-01-03 at 06:38 -0800, Wes Stewart wrote: Another link: http://www.w1vd.com/137-500KWTX.html Wes N7WS --- On Sun, 1/3/10, pd0psb p.s.bijp...@gmail.com wrote: From: pd0psb p.s.bijp...@gmail.com Subject: Re: [Elecraft] [K3] K3 on 500 kHz To: elecraft@mailman.qth.net Date: Sunday, January 3, 2010, 6:35 AM Hello Dick, I was immediately thinking of you when 500kc permission in NL got through, it must feel very special to key-down on your old band :-) A good option for 500kc is the Juma kit: http://www.nikkemedia.fi/juma-tx500/ With a few mods (extra i/o's) it might be an elegant solution with the K3. Happy 2010! 73' Paul PD0PSB PA3CW wrote: Hello k3 Nabblers, I was happy surprized that now in The Netherlands we are also allowed to use 501 - 504 kHz in an experimental phase. As ex Radio Officer it has been around 25 years ago since my last transmission in this band! I was happy to discover that my K3 is very ok for receive on 500 kHz. For transmitting the 0,5 mW on the transperter output needs some work. We are allowed here to transmit with 5 W EIRP so i think i can use some output power in order to radiate this amount of power in a relatively short antenna. Who has made an amplifier for 500 kHz including ant switching circuit? I am very interested in a design that i can copy and build myself. Maybe also the team of Elecraft is working on something, however seen how busy they are with other things i dont think this has priority. Who can tell me their experience with the K3 on 500? Many thanks and a wonderful 2010 Dick PA3CW __ 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 -- 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] Bird Wattmeters
Working in the electronic calibration field for some years I have found that any mechanical meter movement has it's greatest accuracy at full scale only. the meter movement's accuracy diminishes as you go down in scale. So if a Bird Wattmeter is calibrated for 5% accuracy at full scale then it's accuracy will be reduced as the meter deflection is reduced. That is why for greatest accuracy with a Bird Wattmeter measuring 9 watts (for example) should be using a 10 watt slug for greatest meter deflection. Digital readouts will always have the accuracy of the measuring circuitry + or - one count of the least segnifigent digit of the instrument or computer readout no matter how much of the selected range scale is used. Having said that you will have the most accuracy when approaching the upper scale range ( example 90 watts on the 100 watt range and not 9 watts on the 100 watt range). See Below: 73 and Happy New Year Dave KD1NA Bird wattmeter's, the spec is 5% OF THE FULL SCALE READING - and that is ONLY right after calibration. That specification says that if a BIRD wattmeter has been recently calibrated and handled carefully afterwards, with a 100 watt slug, it can have an error of 5 watts - and that applies to *anywhere* on the scale. __ 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] W2 Wattmeter
While Bird watt meters are rugged, revered and are the de-facto standard watt meters in both commercial and amateur circles, their accuracy leaves a lot to be desired. Unless recently calibrated, and used under specific circumstances (ambient temperature) their use should be more properly defined as relative output indicators. Look closely and you'll see that their accuracy is listed as +/- some percentage of a full scale reading for the slug you are using. With a 2500w slug, you could be hundreds of watts off and not know it. Granted, in amateur use, absolute accuracy really does not matter, but just keep this in mind when measuring what you see with your W2 or any other modern digital wattmeter when compared to a Bird. Just because they read differently, there's nearly no justification to think the Bird is correct and your new wattmeter is not. 73, Bob W5OV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of NZ0T Sent: Saturday, January 02, 2010 7:51 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] W2 Wattmeter I'm very happy with my W2. There was an issue with an intermittent in the sensor cable but that was quickly resolved. It seems accurate enough to me on a subjective basis - I have no Bird to compare it to. As far as resolution goes the computer display resolution does rely on LED's and is a continuous bar with a switchable peak indication. This is only the 2nd version of the diplay software and I'm sure it will continue to improve. I have a friend that has the LP-100A and it's a really nice meter but I'm not sure I want to pay $120 more for it. 73 Bill NZ0T Phil amp; Debbie Salas wrote: Those are good points about the trigger and perception of accuracy of the W2. I have yet to see field test data of the W2 in regards to accuracy of the Wattmeter and SWR indications. According to the manual the W2 has an accuracy of +- 0.5dB typical (nothing about worst-case). This is 10-12% accuracy. Not as good as the PowerMaster/LP-100A/Telepost class of wattmeters that use NIST-traceable cal equipment (which should get you more like 3-5% accuracy). Of course, those are $100-$150 more expensive than the W2. If you use the W2 LED display, your perceived error could be greater than the 10-12%. As an example, if you really have 100 watts and the W2 reads it 1/2-dB low, then possibility only the 80-watt LED would light. So this would give you a 20% reading error. Maybe the ARRL will do a review sometime soon. Phil - AD5X __ 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 -- View this message in context: http://n2.nabble.com/W2-Wattmeter-tp4242517p4244535.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] [K1] Building a K1 no side tone
Well Don, I went back checked everything, every hole and every solder fleck. Cleaned up pad solder joints and just verified all, did I mention I missed a couple of holes. Plugged in the power and earbuds and I heard noise, tried the keyer and it was making noise, backwards but dits and dahs. I figure the world would switch to left handed being normal, maybe next year. Anyway now I can say I am off to page 38 and winding that L1. I just have to remember this is my training for making the K2 later this year. With the K2 I will slow it down a notch and read twice before doing anything. Thanks Again Rick/WA6ES Don Wilhelm-4 wrote: Rick, The K1 display changes to a simulated bargraph to indicate the power output when keyed. You will not have any power output at this stage of assembly, so your statement of a 'blank display' may be just fine. Since the backlight stays on during keying, I should retract my statement about a power problem. The most likely reason for no sidetone is soldering - check to see if all points are well soldered and none skipped. You do have the AF Gain advanced do you not? The K1 sidetone varies with the AF Gain setting. The source of the sidetone is the output from the DAC on the Front Panel, U2 pin 1. If you have an oscilloscope, you could check to see if you have an audio signal there when the K1 is keyed. Lacking a 'scope, connect a pair of leads to an audio amplifier input (line in of a computer soundcard or an MP3/CD player) and probe at that point to see if there is any sound - it might not sound great, but you will know if the signal is present. The signal leaves the front panel via J1 pin 5. Look at the schematic for the RF Board sheet 1 in the lower left corner and you will see the components that the sidetone signal (XFIL/TONE) are applied to. It makes it way to the AF Amp through the AF Gain control. You should hear some 'white noise' sound when the AF Gain is advanced. If the audio is totally silent, you may have a problem with the AF Amp rather than the sidetone. 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 -- View this message in context: http://n2.nabble.com/Building-a-K1-no-side-tone-tp4244892p4246602.html Sent from the [K1] 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] [K3] K3 on 500 kHz
Hi Paul, Well that will certainly depend upon antenna efficiency, but QRO makes the antenna much easier and the power company happier :-) Happy New Year Wes --- On Sun, 1/3/10, pd0psb p.s.bijp...@gmail.com wrote: From: pd0psb p.s.bijp...@gmail.com Subject: Re: [Elecraft] [K3] K3 on 500 kHz To: elecraft@mailman.qth.net Date: Sunday, January 3, 2010, 8:02 AM This one will certainly be able to deliver 5W EIRP, Wes :-) Nice design! 73' Paul PD0PSB Another link: http://www.w1vd.com/137-500KWTX.html Wes N7WS __ 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] Bird Wattmeters
Bird Trulines were designed a long time ago. Yes they are good but not that good. Certainly not a calibration standard. With a pure signal they give good results within their specification. With this type of meter it is very important to make sure there are no harmonics in the signal as the element can give large errors if there are. Even harmonics that are many dB below the fundemental can have a significant effect on the readings. This feature is probably behind some of the inflated VHF amplifier power output claims in the past. In extreme cases it is possible to exceed 100% amplifier efficiency according to the meter. Mike kd1na wrote: Working in the electronic calibration field for some years I have found that any mechanical meter movement has it's greatest accuracy at full scale only. the meter movement's accuracy diminishes as you go down in scale. So if a Bird Wattmeter is calibrated for 5% accuracy at full scale then it's accuracy will be reduced as the meter deflection is reduced. That is why for greatest accuracy with a Bird Wattmeter measuring 9 watts (for example) should be using a 10 watt slug for greatest meter deflection. Digital readouts will always have the accuracy of the measuring circuitry + or - one count of the least segnifigent digit of the instrument or computer readout no matter how much of the selected range scale is used. Having said that you will have the most accuracy when approaching the upper scale range ( example 90 watts on the 100 watt range and not 9 watts on the 100 watt range). See Below: 73 and Happy New Year Dave KD1NA Bird wattmeter's, the spec is 5% OF THE FULL SCALE READING - and that is ONLY right after calibration. That specification says that if a BIRD wattmeter has been recently calibrated and handled carefully afterwards, with a 100 watt slug, it can have an error of 5 watts - and that applies to *anywhere* on the scale. __ 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 -- View this message in context: http://n2.nabble.com/Bird-Wattmeters-tp4246548p4246655.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] Hi Q versus Vertical
I am looking for an antenna to work 6 thru 80 meters in a condo development. I presently own a k3/10. Stealth is a very strong consideration. It seems that a SteppIR Vertical or Hi Q antenna would make sense. Does anyone have experience with these two antennas for this type of application? Thanks you for your time and expertise. -- Frank KD8FIP __ 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] [K1] Building a K1 no side tone
Rick, that is great news. There is a menu setting to reverse the paddles for us lefties. 73, Don W3FPR Rick/WA6ES wrote: Well Don, I went back checked everything, every hole and every solder fleck. Cleaned up pad solder joints and just verified all, did I mention I missed a couple of holes. Plugged in the power and earbuds and I heard noise, tried the keyer and it was making noise, backwards but dits and dahs. I figure the world would switch to left handed being normal, maybe next year. Anyway now I can say I am off to page 38 and winding that L1. I just have to remember this is my training for making the K2 later this year. With the K2 I will slow it down a notch and read twice before doing anything. Thanks Again Rick/WA6ES Don Wilhelm-4 wrote: Rick, The K1 display changes to a simulated bargraph to indicate the power output when keyed. You will not have any power output at this stage of assembly, so your statement of a 'blank display' may be just fine. Since the backlight stays on during keying, I should retract my statement about a power problem. The most likely reason for no sidetone is soldering - check to see if all points are well soldered and none skipped. You do have the AF Gain advanced do you not? The K1 sidetone varies with the AF Gain setting. The source of the sidetone is the output from the DAC on the Front Panel, U2 pin 1. If you have an oscilloscope, you could check to see if you have an audio signal there when the K1 is keyed. Lacking a 'scope, connect a pair of leads to an audio amplifier input (line in of a computer soundcard or an MP3/CD player) and probe at that point to see if there is any sound - it might not sound great, but you will know if the signal is present. The signal leaves the front panel via J1 pin 5. Look at the schematic for the RF Board sheet 1 in the lower left corner and you will see the components that the sidetone signal (XFIL/TONE) are applied to. It makes it way to the AF Amp through the AF Gain control. You should hear some 'white noise' sound when the AF Gain is advanced. If the audio is totally silent, you may have a problem with the AF Amp rather than the sidetone. 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 No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.725 / Virus Database: 270.14.124/2598 - Release Date: 01/03/10 04:41:00 __ 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] Hi Q versus Vertical
See: http://vibrotek.com/w5dc/w5dcant.html It's not exactly what you asked for but it might give you some useful ideas. The WARC bands and 80 meters are not shown in these early pictures. The upper half of 80 meters is a wire that's parallel to the wire until it reaches the pole where it then goes up and over the townhouse to a short fiberglass pole mounted in a vent pipe and then down toward an enclosed patio. The wire is bare, stranded, #26 copper clad steel and seems to survive well ( winds to 80 mph so fan plus several snow storms up to 2 feet) as long as you don't kink the wire during assembly. The lower half of the 80 meter wire is parallel to the 40 wire and includes a coil under the deck at it's midpoint. It's been good for 112 dxcc entities since summer; best/longest distance on 80 so far is DS1REE. Dunc, W5DC Frank MacDonell wrote: I am looking for an antenna to work 6 thru 80 meters in a condo development. I presently own a k3/10. Stealth is a very strong consideration. It seems that a SteppIR Vertical or Hi Q antenna would make sense. Does anyone have experience with these two antennas for this type of application? Thanks you for your time and expertise. __ 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] base K2 RF board
Does this go back to the older manuals? I think I used Manual Ver C (no 100% certain, though) when I built K2 #1103 -- is it something I should know about and check? Both the rev G manual on the web and the rev G printed manual has the same problem. tnx. Conway Yee __ 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] radio control and CW interface
Jorge Diez - CX6VM wrote: With the K3, wich cables interface may I useto send CW and to control the radio with N1MM and Win-Test? I don't know anything about Wintest but I'm using K1EL's Winkeyer USB with N1MM. http://k1el.tripod.com/WKUSB.html The advantage of this keyer versus computer keying of the K3 directly is: 1. CW timing is perfect...no choppiness. 2. Keying can be interrupted immediately with either ESC on the keyboard or by touching the paddles. Cables needed are: USB cable from computer to Winkeyer (supplied with Winkeyer). KEY1 cable from Winkeyer to K3 KEY IN (standard dual phono). PTT1 cable from Winkeyer to K3 PTT IN (standard dual phono). KEY OUT from K3 to amplifier (standard dual phono). Winkeyer can be used either stand alone (with internal memories) or with computer (with N1MM memories). It can also be used with two rigs in N1MM SO2R mode. 73, Bill W4ZV -- View this message in context: http://n2.nabble.com/radio-control-and-CW-interface-tp4246383p4247094.html Sent from the [K3] 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] base K2 RF board
Conway, From an earlier manual, there are .001 capacitors on the RF Baord at C1, C2, C9, C17, C26 and C27 in addition to the ones that do appear in the manual. For the list of .01 capacitors, add C52, C53, C55, C58, and C61. Those additions should make the numbers right. The assembly instructions are correct, it is only the parts listing that has these omissions. I have been told that it happened due to a formatting glitch. 73, Don W3FPR Conway Yee wrote: Continuing my build of the base K2, I have identified two of the missing designators in the Appendix A, page 1 0.001 and 0.01 capacitors. C1 and C2 are 0.001 (102) capacitors as installed on p. 36, right column, 3rd item. C1, C2 are NOT listed in the Appendix A pages 1-3. For the 0.001 uF (102) entry, 28 capacitors are in inventory with 22 designators listed. Specifically C1 and C2 are not listed. Is there a list of the remaining capacitors (4) which are 0.001 uF, likely C37? After accounting for the Errata, at total of 38 0.01 uF (103) capacitors are listed. There are 43 present in inventory the RF board bags for a total of 5 missing designators. The last item, C175 is followed by a comma. Further there is a suggestion of a series of 5 commas above the first line. Is there a list of the 5 missing capacitors, likely C52 or C175? Thanks. Conway Yee, N2JWQ __ 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 No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.725 / Virus Database: 270.14.124/2597 - Release Date: 01/02/10 03:22:00 __ 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] [HAM] Hi Q versus Vertical
Hi Frank: Lots of K3 users have the SteppIR BigIR vertical. I know this from being a member of both Yahoo groups. You might want to pose the same question on the SteppIR Yahoo group. http://groups.yahoo.com/group/SteppIR/ And I just thought you would like to know that SteppIR has just announced the addition of an optional coil to the SmallIR that will make that antenna work on 80 through 6 meters as does the BigIR. The SmallIR is half the height of the BigIR. Just a bit more stealthy. Maybe it can be made to look like a flagpole. 73, Mike K2MK From Frank KD8FIP: I am looking for an antenna to work 6 thru 80 meters in a condo development. I presently own a k3/10. Stealth is a very strong consideration. It seems that a SteppIR Vertical or Hi Q antenna would make sense. Does anyone have experience with these two antennas for this type of application? Thanks you for your time and expertise. Frank KD8FIP -- View this message in context: http://n2.nabble.com/Hi-Q-versus-Vertical-tp4246657p4247140.html Sent from the [HAM] 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] Let me build a K2 for you
Let me build a K2, or any other Elecraft kit, for you. You will receive a brand new radio with the options you want. I have built very close to 300 K2's to date. My prices are reasonable. Please respond directly, not on the reflector. 73 Alan W1HYV _ Your E-mail and More On-the-Go. Get Windows Live Hotmail Free. http://clk.atdmt.com/GBL/go/171222985/direct/01/ __ 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 - Speaker/headphone problem
Tony, Same thing happened to me when I plugged my Kenwood mono speaker into the stereo speaker jack on the back of the K3. I did this without thinking from the front of the radio when I was rearranging equipment in the shack. The speaker worked for a couple of days until the audio output transistor failed. I could then only hear audio from the headphones. I had to send my K3 back to Elecraft in order to replace the audio output transistor. It was under warranty so they repaired it for free. While the rig was in the shop, I had them add the sub RX, digital voice recorder, and the IF Out interface. So they came out okay on the deal. But I learned my lesson -- do not plug a mono speaker into the stereo receptacle. It is clearly labeled as Stereo on the back, but you have to be looking at it from that direction! Even the manual shows it as stereo. Dave, N4QS - Original Message - From: N2TK, Tony tony@verizon.net To: 'Elecraft Reflector' elecraft@mailman.qth.net Sent: Saturday, January 02, 2010 11:25 AM Subject: [Elecraft] K3 - Speaker/headphone problem Maybe someone has had this problem before and can save me time troubleshooting? Everything was fine yesterday. This morning (rig is always ON) headphones work fine. But nothing out of either internal or external speaker when I unplugged the headphones. I now have to turn Config: SPKR + PH to YES to listen out of either an external or internal speaker. But now I can't turn off the speakers when plugging in the headphones. Any ideas what could have happened? Tnx for any feedback. N2TK, Tony __ 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] K3 - Speaker/headphone problem
Doesn't the manual state that a mono plug is ok? I better unplug my speaker. I must have read wrong. Thanks a lot for the post! Keith W8GX On Jan 3, 2010, at 3:57 PM, Dave Perry N4QS wrote: Tony, Same thing happened to me when I plugged my Kenwood mono speaker into the stereo speaker jack on the back of the K3. I did this without thinking from the front of the radio when I was rearranging equipment in the shack. The speaker worked for a couple of days until the audio output transistor failed. I could then only hear audio from the headphones. I had to send my K3 back to Elecraft in order to replace the audio output transistor. It was under warranty so they repaired it for free. While the rig was in the shop, I had them add the sub RX, digital voice recorder, and the IF Out interface. So they came out okay on the deal. But I learned my lesson -- do not plug a mono speaker into the stereo receptacle. It is clearly labeled as Stereo on the back, but you have to be looking at it from that direction! Even the manual shows it as stereo. Dave, N4QS - Original Message - From: N2TK, Tony tony@verizon.net To: 'Elecraft Reflector' elecraft@mailman.qth.net Sent: Saturday, January 02, 2010 11:25 AM Subject: [Elecraft] K3 - Speaker/headphone problem Maybe someone has had this problem before and can save me time troubleshooting? Everything was fine yesterday. This morning (rig is always ON) headphones work fine. But nothing out of either internal or external speaker when I unplugged the headphones. I now have to turn Config: SPKR + PH to YES to listen out of either an external or internal speaker. But now I can't turn off the speakers when plugging in the headphones. Any ideas what could have happened? Tnx for any feedback. N2TK, Tony __ 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
Re: [Elecraft] K3 - Speaker/headphone problem
The manual says: (page 20) A stereo plug is recommended..If you only have a mono plug, set CONFIG: SPKRS to 1 and disable right -channel audio So yes it says mono is ok. But it doesn't say you'll blow your transistors. You gotta find that out by other means, some of which aren't pleasant. Steve N4LQ n...@carolina.rr.com - Original Message - From: Keith Hamilton tu...@zoominternet.net To: Dave Perry N4QS n...@comcast.net Cc: 'Elecraft Reflector' elecraft@mailman.qth.net Sent: Sunday, January 03, 2010 4:12 PM Subject: Re: [Elecraft] K3 - Speaker/headphone problem Doesn't the manual state that a mono plug is ok? I better unplug my speaker. I must have read wrong. Thanks a lot for the post! Keith W8GX On Jan 3, 2010, at 3:57 PM, Dave Perry N4QS wrote: Tony, Same thing happened to me when I plugged my Kenwood mono speaker into the stereo speaker jack on the back of the K3. I did this without thinking from the front of the radio when I was rearranging equipment in the shack. The speaker worked for a couple of days until the audio output transistor failed. I could then only hear audio from the headphones. I had to send my K3 back to Elecraft in order to replace the audio output transistor. It was under warranty so they repaired it for free. While the rig was in the shop, I had them add the sub RX, digital voice recorder, and the IF Out interface. So they came out okay on the deal. But I learned my lesson -- do not plug a mono speaker into the stereo receptacle. It is clearly labeled as Stereo on the back, but you have to be looking at it from that direction! Even the manual shows it as stereo. Dave, N4QS - Original Message - From: N2TK, Tony tony@verizon.net To: 'Elecraft Reflector' elecraft@mailman.qth.net Sent: Saturday, January 02, 2010 11:25 AM Subject: [Elecraft] K3 - Speaker/headphone problem Maybe someone has had this problem before and can save me time troubleshooting? Everything was fine yesterday. This morning (rig is always ON) headphones work fine. But nothing out of either internal or external speaker when I unplugged the headphones. I now have to turn Config: SPKR + PH to YES to listen out of either an external or internal speaker. But now I can't turn off the speakers when plugging in the headphones. Any ideas what could have happened? Tnx for any feedback. N2TK, Tony __ 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 No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.725 / Virus Database: 270.14.124/2598 - Release Date: 01/03/10 04:41:00 __ 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 - Speaker/headphone problem
Older K3's were susceptible to damage if a MONO plug was inserted into the STEREO jack on the back panel. Subsequent to that, there was both a hardware and a software mod to new(er) K3s to eliminate the threat of damage from that happening. UNfortunately, I cannot quote book, verse, and phrase of exactly when this 'factory' change occurred. I believe it's spoken to in the K3 Mods section of the Elecraft web site... QRX... lemme check... OK... here's the info from http://www.elecraft.com/K3/k3_app_notes.htm and down at K3 AF Output Mod Kit. Rev C: This modification is needed for all K3s shipped approximately before 01/12/09 containing either a Revision XB or Revision A KIO3 board. You must inspect the KIO3 board to see whether the modification has been made. Modified boards will include the leaded resistors. You can see one of the resistors by removing the top cover and inspecting the side of the KIO3 board facing away from the rear panel. Photos of what the added resistors look like are in the document. Hope this helps. 73, Tom Hammond N0SS At 15:12 01/03/2010, Keith Hamilton wrote: Doesn't the manual state that a mono plug is ok? I better unplug my speaker. I must have read wrong. Thanks a lot for the post! Keith W8GX On Jan 3, 2010, at 3:57 PM, Dave Perry N4QS wrote: Tony, Same thing happened to me when I plugged my Kenwood mono speaker into the stereo speaker jack on the back of the K3. I did this without thinking from the front of the radio when I was rearranging equipment in the shack. The speaker worked for a couple of days until the audio output transistor failed. I could then only hear audio from the headphones. I had to send my K3 back to Elecraft in order to replace the audio output transistor. It was under warranty so they repaired it for free. While the rig was in the shop, I had them add the sub RX, digital voice recorder, and the IF Out interface. So they came out okay on the deal. But I learned my lesson -- do not plug a mono speaker into the stereo receptacle. It is clearly labeled as Stereo on the back, but you have to be looking at it from that direction! Even the manual shows it as stereo. Dave, N4QS - Original Message - From: N2TK, Tony tony@verizon.net To: 'Elecraft Reflector' elecraft@mailman.qth.net Sent: Saturday, January 02, 2010 11:25 AM Subject: [Elecraft] K3 - Speaker/headphone problem Maybe someone has had this problem before and can save me time troubleshooting? Everything was fine yesterday. This morning (rig is always ON) headphones work fine. But nothing out of either internal or external speaker when I unplugged the headphones. I now have to turn Config: SPKR + PH to YES to listen out of either an external or internal speaker. But now I can't turn off the speakers when plugging in the headphones. Any ideas what could have happened? Tnx for any feedback. N2TK, Tony __ 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 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 - Speaker/headphone problem
Already changed my speaker to a stereo plug! I'm not going to take chances! Again thanks a lot! Keith W8GX - Original Message - From: Steve Ellington n...@carolina.rr.com To: Keith Hamilton tu...@zoominternet.net; Dave Perry N4QS n...@comcast.net Cc: 'Elecraft Reflector' elecraft@mailman.qth.net Sent: Sunday, January 03, 2010 4:34 PM Subject: Re: [Elecraft] K3 - Speaker/headphone problem The manual says: (page 20) A stereo plug is recommended..If you only have a mono plug, set CONFIG: SPKRS to 1 and disable right -channel audio So yes it says mono is ok. But it doesn't say you'll blow your transistors. You gotta find that out by other means, some of which aren't pleasant. Steve N4LQ n...@carolina.rr.com - Original Message - From: Keith Hamilton tu...@zoominternet.net To: Dave Perry N4QS n...@comcast.net Cc: 'Elecraft Reflector' elecraft@mailman.qth.net Sent: Sunday, January 03, 2010 4:12 PM Subject: Re: [Elecraft] K3 - Speaker/headphone problem Doesn't the manual state that a mono plug is ok? I better unplug my speaker. I must have read wrong. Thanks a lot for the post! Keith W8GX On Jan 3, 2010, at 3:57 PM, Dave Perry N4QS wrote: Tony, Same thing happened to me when I plugged my Kenwood mono speaker into the stereo speaker jack on the back of the K3. I did this without thinking from the front of the radio when I was rearranging equipment in the shack. The speaker worked for a couple of days until the audio output transistor failed. I could then only hear audio from the headphones. I had to send my K3 back to Elecraft in order to replace the audio output transistor. It was under warranty so they repaired it for free. While the rig was in the shop, I had them add the sub RX, digital voice recorder, and the IF Out interface. So they came out okay on the deal. But I learned my lesson -- do not plug a mono speaker into the stereo receptacle. It is clearly labeled as Stereo on the back, but you have to be looking at it from that direction! Even the manual shows it as stereo. Dave, N4QS - Original Message - From: N2TK, Tony tony@verizon.net To: 'Elecraft Reflector' elecraft@mailman.qth.net Sent: Saturday, January 02, 2010 11:25 AM Subject: [Elecraft] K3 - Speaker/headphone problem Maybe someone has had this problem before and can save me time troubleshooting? Everything was fine yesterday. This morning (rig is always ON) headphones work fine. But nothing out of either internal or external speaker when I unplugged the headphones. I now have to turn Config: SPKR + PH to YES to listen out of either an external or internal speaker. But now I can't turn off the speakers when plugging in the headphones. Any ideas what could have happened? Tnx for any feedback. N2TK, Tony __ 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 No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.725 / Virus Database: 270.14.124/2598 - Release Date: 01/03/10 04:41:00 __ 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 - Speaker/headphone problem
Hi Dave, Tnx for the info, but I don't think that is my problem. I have been using a stereo plug in the K3 for over a year without a problem. And my external speaker and internal speaker work fine if I turn on SPKR + PH. I just can't get the internal or external speaker to work when there is no headphones plugged in and SPKR + PH is OFF. This is one of those problems where the night before it was fine and the next morning it was not working. Power had not been turned off. In fact the only time I normally turn off power is when I reboot after upgrading the firmware. 73, N2TK, Tony -Original Message- From: Dave Perry N4QS [mailto:n...@comcast.net] Sent: Sunday, January 03, 2010 3:58 PM To: N2TK, Tony; 'Elecraft Reflector' Subject: Re: [Elecraft] K3 - Speaker/headphone problem Tony, Same thing happened to me when I plugged my Kenwood mono speaker into the stereo speaker jack on the back of the K3. I did this without thinking from the front of the radio when I was rearranging equipment in the shack. The speaker worked for a couple of days until the audio output transistor failed. I could then only hear audio from the headphones. I had to send my K3 back to Elecraft in order to replace the audio output transistor. It was under warranty so they repaired it for free. While the rig was in the shop, I had them add the sub RX, digital voice recorder, and the IF Out interface. So they came out okay on the deal. But I learned my lesson -- do not plug a mono speaker into the stereo receptacle. It is clearly labeled as Stereo on the back, but you have to be looking at it from that direction! Even the manual shows it as stereo. Dave, N4QS - Original Message - From: N2TK, Tony tony@verizon.net To: 'Elecraft Reflector' elecraft@mailman.qth.net Sent: Saturday, January 02, 2010 11:25 AM Subject: [Elecraft] K3 - Speaker/headphone problem Maybe someone has had this problem before and can save me time troubleshooting? Everything was fine yesterday. This morning (rig is always ON) headphones work fine. But nothing out of either internal or external speaker when I unplugged the headphones. I now have to turn Config: SPKR + PH to YES to listen out of either an external or internal speaker. But now I can't turn off the speakers when plugging in the headphones. Any ideas what could have happened? Tnx for any feedback. N2TK, Tony __ 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] K3 - Speaker/headphone problem
And I might add that the first paragraph of that same application note explains the 'why' - I quote: This modification protects the K3's audio amplifier if either speaker output is connected to a short circuit or very low impedance load. Two 470 ohm, 1/4 watt resistors are added to the output circuit to suppress potentially damaging voltage spikes that might otherwise occur. A mono jack *will* short out the right channel. 73, Don W3FPR Tom Hammond wrote: Older K3's were susceptible to damage if a MONO plug was inserted into the STEREO jack on the back panel. Subsequent to that, there was both a hardware and a software mod to new(er) K3s to eliminate the threat of damage from that happening. UNfortunately, I cannot quote book, verse, and phrase of exactly when this 'factory' change occurred. I believe it's spoken to in the K3 Mods section of the Elecraft web site... QRX... lemme check... OK... here's the info from http://www.elecraft.com/K3/k3_app_notes.htm and down at K3 AF Output Mod Kit. Rev C: This modification is needed for all K3s shipped approximately before 01/12/09 containing either a Revision XB or Revision A KIO3 board. You must inspect the KIO3 board to see whether the modification has been made. Modified boards will include the leaded resistors. You can see one of the resistors by removing the top cover and inspecting the side of the KIO3 board facing away from the rear panel. Photos of what the added resistors look like are in the document. Hope this helps. 73, Tom Hammond N0SS At 15:12 01/03/2010, Keith Hamilton wrote: Doesn't the manual state that a mono plug is ok? I better unplug my speaker. I must have read wrong. Thanks a lot for the post! Keith W8GX On Jan 3, 2010, at 3:57 PM, Dave Perry N4QS wrote: Tony, Same thing happened to me when I plugged my Kenwood mono speaker into the stereo speaker jack on the back of the K3. I did this without thinking from the front of the radio when I was rearranging equipment in the shack. The speaker worked for a couple of days until the audio output transistor failed. I could then only hear audio from the headphones. I had to send my K3 back to Elecraft in order to replace the audio output transistor. It was under warranty so they repaired it for free. __ 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 Back Panel Phones Jack... my solution...
Man... what a BIG discussion... whew! Early on with my K3, I found that having two speakers (L R) plugged into the rear panel SPKR jack of the K3 was turning out to be a real P.I.T.A. I had two speakers, with somewhat lengthy (though folded up and tied) leads which extended left and right across the back of the K3, wound in/out of all of the other wires back there as well, and BOTH leads attached to a single stereo plug, inserted into the back of the K3. When I wanted to move the speakers, or to take them with me for a trip or demo I had to first unplug the plug from the back of the K3 and then 'snake' at least one of the speakers up/down in/out of all the other accumulated wires before I could manage to resurrect both speakers fro in back of the rig. It got to be a really tiring process... really quick! I decided to fix that problem. I designed a small PC board on which two (2) stereo phone jacks were mounted, and then a 7 length of 2-conductor (w/shield) cable from the PC board to a single stereo plug which plugged into the back of the K3. The jacks on the PC board were wired such that the RING on each jack was left unconnected and so only the TIP and SLEEVE were connected to the cable. This way, I can plug EITHER stereo OR mono plugs into the jacks on the PC board and not have to worry about shorting anything on the K3 out to ground. Additionally, and this is the best part for me... now, when I need to remove the speakers, all I have to do is to unplug each speaker from the PC board and INDIVIDUALLY unwrap any wires before pulling it to the front of the desk... no longer do I have to man-handle a big honkin' speaker, trying to unwind it from the rats nest of wires in back of the rig. I also have a quick and easy to unplug both speakers from the back of the K3 if I need to do that as well. If you like my idea, visit my web site at: http://www.n0ss.net/index_k3.html and drop down to the line titled: External (Dual) Speaker Splitter for the K3. If there's enough interest, I might consider making some PC boards for sale, otherwise, I'll be happy to make the artwork available for you to make your own PC boards IF you're interested in doing so. If someone else wants to make the boards, I'll be happy to give them the artwork, too. 73, Tom N0SS __ 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] Blank EC-2 Enclosure
I was going to mount my KPA/100 in a seperate enclosure, but never have gotten around to it. If anyone on the reflector needs one and wants to buy it from me, I will sell it for $50.00 via Paypal including shipping CONUS Ci Jones, WU7R __ 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 Back Panel Phones Jack... my solution...
Tom, A great idea (why didn't I think of that). I don't cart my K3 around much, but I use 2 speakers for AFX. It is not 'nice' having both speakers tied to a single stereo jack. Another solution, although not as elegant, is to use a Y-adapter. If it is a commonly manufactured adapter, the ones that adapt 1/8 inch stereo jacks will not work because the plug and two jacks are simply wired in parallel. The Y-adapter with a 1.8 inch stereo plug to 2 RCA jacks will work, but it requires RCA plugs on the speakers (or that addition of 2-RCA plug 0to 1/8 inch jack adapters. One example is from Radio Shack: Y-Adapter, Phono Jacks to Stereo 1/8 Plug *Model:* 274-269 | *Catalog #:* 274-369 Tom, I will take one of your board if you decide to make up some 'kitchen boards'. 73, Don W3FPR Tom Hammond wrote: Man... what a BIG discussion... whew! Early on with my K3, I found that having two speakers (L R) plugged into the rear panel SPKR jack of the K3 was turning out to be a real P.I.T.A. I had two speakers, with somewhat lengthy (though folded up and tied) leads which extended left and right across the back of the K3, wound in/out of all of the other wires back there as well, and BOTH leads attached to a single stereo plug, inserted into the back of the K3. When I wanted to move the speakers, or to take them with me for a trip or demo I had to first unplug the plug from the back of the K3 and then 'snake' at least one of the speakers up/down in/out of all the other accumulated wires before I could manage to resurrect both speakers fro in back of the rig. It got to be a really tiring process... really quick! I decided to fix that problem. I designed a small PC board on which two (2) stereo phone jacks were mounted, and then a 7 length of 2-conductor (w/shield) cable from the PC board to a single stereo plug which plugged into the back of the K3. The jacks on the PC board were wired such that the RING on each jack was left unconnected and so only the TIP and SLEEVE were connected to the cable. This way, I can plug EITHER stereo OR mono plugs into the jacks on the PC board and not have to worry about shorting anything on the K3 out to ground. Additionally, and this is the best part for me... now, when I need to remove the speakers, all I have to do is to unplug each speaker from the PC board and INDIVIDUALLY unwrap any wires before pulling it to the front of the desk... no longer do I have to man-handle a big honkin' speaker, trying to unwind it from the rats nest of wires in back of the rig. I also have a quick and easy to unplug both speakers from the back of the K3 if I need to do that as well. If you like my idea, visit my web site at: http://www.n0ss.net/index_k3.html and drop down to the line titled: External (Dual) Speaker Splitter for the K3. If there's enough interest, I might consider making some PC boards for sale, otherwise, I'll be happy to make the artwork available for you to make your own PC boards IF you're interested in doing so. If someone else wants to make the boards, I'll be happy to give them the artwork, too. 73, Tom N0SS __ 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 No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.725 / Virus Database: 270.14.124/2598 - Release Date: 01/03/10 04:41:00 __ 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] base K2 RF board
From an earlier manual, there are .001 capacitors on the RF Baord at C1, C2, C9, C17, C26 and C27 in addition to the ones that do appear in the manual. Thanks. This completes my inventory of 0.001 capacitors. For the list of .01 capacitors, add C52, C53, C55, C58, and C61. Those additions should make the numbers right. This list of 5 capacitors is already in the Errata. This brings the inventory to 38 of 43 capacitors. There are still 5 capacitors missing. Assuming that only one line was cut off at the top, the remaining capacitors are missing from the last line (i.e. C175). The line containing C175 is terminated by a comma. The assembly instructions are correct, it is only the parts listing that has these omissions. I have been told that it happened due to a formatting glitch. I agree that it is likely an error in the parts listing. The word processor likely leaves only a certain amount of space which is exceeded by having 28, 43 entries. I prefer LaTeX which calculates ALL of these entries on the fly, giving much better results. tnx. Conway Yee, N2JWQ __ 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 Back Panel Phones Jack... my solution...
I solved this issue by installing a male RCA connector on each of my speakers. Then I bought a long RCA to 1/4 in headphone cable that didn't have a strain relief type thing on it. The strain relieve that I'm talking about are the ones that don't allow the cable to split. I then ripped the two cables apart so that each channel could go different directions. I then when its time to go pull the cable off at the speakers and then pull the RCA ends into where the radio is and extract the cable. Heck if I really wanted to make travel easy (and I may end up doing this)... I'll just buy another cable then all I have to do is pull the speakers off with their little pig tails and they'll plug right into the travel cable (which can probably be a shorter version of what is in the shack)... ~Brett (KC7OTG) On Sun, 2010-01-03 at 16:09 -0600, Tom Hammond wrote: Man... what a BIG discussion... whew! Early on with my K3, I found that having two speakers (L R) plugged into the rear panel SPKR jack of the K3 was turning out to be a real P.I.T.A. I had two speakers, with somewhat lengthy (though folded up and tied) leads which extended left and right across the back of the K3, wound in/out of all of the other wires back there as well, and BOTH leads attached to a single stereo plug, inserted into the back of the K3. When I wanted to move the speakers, or to take them with me for a trip or demo I had to first unplug the plug from the back of the K3 and then 'snake' at least one of the speakers up/down in/out of all the other accumulated wires before I could manage to resurrect both speakers fro in back of the rig. It got to be a really tiring process... really quick! I decided to fix that problem. I designed a small PC board on which two (2) stereo phone jacks were mounted, and then a 7 length of 2-conductor (w/shield) cable from the PC board to a single stereo plug which plugged into the back of the K3. The jacks on the PC board were wired such that the RING on each jack was left unconnected and so only the TIP and SLEEVE were connected to the cable. This way, I can plug EITHER stereo OR mono plugs into the jacks on the PC board and not have to worry about shorting anything on the K3 out to ground. Additionally, and this is the best part for me... now, when I need to remove the speakers, all I have to do is to unplug each speaker from the PC board and INDIVIDUALLY unwrap any wires before pulling it to the front of the desk... no longer do I have to man-handle a big honkin' speaker, trying to unwind it from the rats nest of wires in back of the rig. I also have a quick and easy to unplug both speakers from the back of the K3 if I need to do that as well. If you like my idea, visit my web site at: http://www.n0ss.net/index_k3.html and drop down to the line titled: External (Dual) Speaker Splitter for the K3. If there's enough interest, I might consider making some PC boards for sale, otherwise, I'll be happy to make the artwork available for you to make your own PC boards IF you're interested in doing so. If someone else wants to make the boards, I'll be happy to give them the artwork, too. 73, Tom N0SS __ 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] base K2 RF board
Conway, From the Rev F manual, the bottom of the list of .01 uF capacitors is C175, C181, C183, C184 and C186. It looks like the height of the column stayed the same, but the width was reduced - the number of capacitors per line is greater in the Rev F manual than in the Rev G. 73, Don W3FPR Conway Yee wrote: From an earlier manual, there are .001 capacitors on the RF Baord at C1, C2, C9, C17, C26 and C27 in addition to the ones that do appear in the manual. Thanks. This completes my inventory of 0.001 capacitors. For the list of .01 capacitors, add C52, C53, C55, C58, and C61. Those additions should make the numbers right. This list of 5 capacitors is already in the Errata. This brings the inventory to 38 of 43 capacitors. There are still 5 capacitors missing. Assuming that only one line was cut off at the top, the remaining capacitors are missing from the last line (i.e. C175). The line containing C175 is terminated by a comma. The assembly instructions are correct, it is only the parts listing that has these omissions. I have been told that it happened due to a formatting glitch. I agree that it is likely an error in the parts listing. The word processor likely leaves only a certain amount of space which is exceeded by having 28, 43 entries. I prefer LaTeX which calculates ALL of these entries on the fly, giving much better results. tnx. Conway Yee, N2JWQ __ 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 No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.725 / Virus Database: 270.14.124/2598 - Release Date: 01/03/10 04:41:00 __ 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] base K2 RF board
There was a time, maybe 8-9 years ago when life was thought to be too short for inventories, many just jumped in and got on with it, I certainly did. 100% success. All this chatter about truncated lines is just getting in the way of building. And another thing, real men wind torroids ;-) Unless you have a medical condition or other disability. Regards, Mike VP8NO K2 #1400 + everything except the battery K3 #345 loaded - Original Message - From: Conway Yee y...@bronze.lcs.mit.edu To: d...@w3fpr.com Cc: elecraft@mailman.qth.net; supp...@elecraft.com Sent: Sunday, January 03, 2010 7:51 PM Subject: Re: [Elecraft] base K2 RF board From an earlier manual, there are .001 capacitors on the RF Baord at C1, C2, C9, C17, C26 and C27 in addition to the ones that do appear in the manual. Thanks. This completes my inventory of 0.001 capacitors. For the list of .01 capacitors, add C52, C53, C55, C58, and C61. Those additions should make the numbers right. This list of 5 capacitors is already in the Errata. This brings the inventory to 38 of 43 capacitors. There are still 5 capacitors missing. Assuming that only one line was cut off at the top, the remaining capacitors are missing from the last line (i.e. C175). The line containing C175 is terminated by a comma. The assembly instructions are correct, it is only the parts listing that has these omissions. I have been told that it happened due to a formatting glitch. I agree that it is likely an error in the parts listing. The word processor likely leaves only a certain amount of space which is exceeded by having 28, 43 entries. I prefer LaTeX which calculates ALL of these entries on the fly, giving much better results. tnx. Conway Yee, N2JWQ __ 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 Back Panel Phones Jack... my solution...
Tom Hammond-2 wrote: I had two speakers, with somewhat lengthy (though folded up and tied) leads which extended left and right across the back of the K3, wound in/out of all of the other wires back there as well, and BOTH leads attached to a single stereo plug, inserted into the back of the K3. When I wanted to move the speakers, or to take them with me for a trip or demo I had to first unplug the plug from the back of the K3 and then 'snake' at least one of the speakers up/down in/out of all the other accumulated wires before I could manage to resurrect both speakers fro in back of the rig. It got to be a really tiring process... really quick! I decided to fix that problem. I designed a small PC board on which two (2) stereo phone jacks were mounted, and then a 7 length of 2-conductor (w/shield) cable from the PC board to a single stereo plug which plugged into the back of the K3. Been there, done that, etc. I think practically every socket on the back of my K3 has something plugged into it. But either I'm overlooking something, or you don't need to make up a special connector. You can buy little adapters that have one 3.5mm stereo jack output and two 3.5mm stereo sockets for input. I think they are made to allow two people to listen simultaneously to an MP3 player. - Julian, G4ILO. K2 #392 K3 #222. * G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html -- View this message in context: http://n2.nabble.com/K3-Back-Panel-Phones-Jack-my-solution-tp4247468p4247705.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] K3 Back Panel Phones Jack... my solution...
On Sun, Jan 3, 2010 at 3:41 PM, Julian, G4ILO julian.g4...@gmail.com wrote: Tom Hammond-2 wrote: I had two speakers, with somewhat lengthy (though folded up and tied) leads which extended left and right across the back of the K3, wound in/out of all of the other wires back there as well, and BOTH leads attached to a single stereo plug, inserted into the back of the K3. When I wanted to move the speakers, or to take them with me for a trip or demo I had to first unplug the plug from the back of the K3 and then 'snake' at least one of the speakers up/down in/out of all the other accumulated wires before I could manage to resurrect both speakers fro in back of the rig. It got to be a really tiring process... really quick! I decided to fix that problem. I designed a small PC board on which two (2) stereo phone jacks were mounted, and then a 7 length of 2-conductor (w/shield) cable from the PC board to a single stereo plug which plugged into the back of the K3. Been there, done that, etc. I think practically every socket on the back of my K3 has something plugged into it. But either I'm overlooking something, or you don't need to make up a special connector. You can buy little adapters that have one 3.5mm stereo jack output and two 3.5mm stereo sockets for input. I think they are made to allow two people to listen simultaneously to an MP3 player. What you're missing is that that would still cause the ring to be shorted to ground if a mono plug was inserted, and both speakers would still get the left channel, whereas Tom's solution (presumably) connects the ring of the K3 connector to the tip of the right connector on his little box. ~Iain / N6ML __ 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 Back Panel Phones Jack... my solution...
Julian, What is missing there is that with those adapters, one must wire one speaker to the tip and the other to the ring to achieve dual speaker reception. It would be best to have both speakers wired the same - only to the tip and sleeve - Tom's homebuilt adapter does that. 73, Don W3FPR Julian, G4ILO wrote: But either I'm overlooking something, or you don't need to make up a special connector. You can buy little adapters that have one 3.5mm stereo jack output and two 3.5mm stereo sockets for input. I think they are made to allow two people to listen simultaneously to an MP3 player. __ 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] [HAM] Hi Q versus Vertical
The antenna by itself maybe small, but keep in mind that in order to make it function properly, you need radials and lots of 'em. If you mount the vertical on the ground, radial length is less important. If you mount is with elevated radials you need at least 2 tuned radials for each band to make it work. But you can find that info on the SteppIR Website as well so you probably no this already ;-) 73, Maarten PD2R 2010/1/3 Mike K2MK k...@comcast.net Hi Frank: Lots of K3 users have the SteppIR BigIR vertical. I know this from being a member of both Yahoo groups. You might want to pose the same question on the SteppIR Yahoo group. http://groups.yahoo.com/group/SteppIR/ And I just thought you would like to know that SteppIR has just announced the addition of an optional coil to the SmallIR that will make that antenna work on 80 through 6 meters as does the BigIR. The SmallIR is half the height of the BigIR. Just a bit more stealthy. Maybe it can be made to look like a flagpole. 73, Mike K2MK From Frank KD8FIP: I am looking for an antenna to work 6 thru 80 meters in a condo development. I presently own a k3/10. Stealth is a very strong consideration. It seems that a SteppIR Vertical or Hi Q antenna would make sense. Does anyone have experience with these two antennas for this type of application? Thanks you for your time and expertise. Frank KD8FIP -- View this message in context: http://n2.nabble.com/Hi-Q-versus-Vertical-tp4246657p4247140.html Sent from the [HAM] 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] K3 Back Panel Phones Jack... my solution...
Hi Tom, Doesn't the Radio Shack 274-375 stereo adapter at $4.50 do the same thing as your circuit board? See http://www.radioshack.com/product/index.jsp?productId=2102691 Best wishes and 73, John, no8v __ 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] [HAM] Hi Q versus Vertical
I have the Hi-Q 4/80 screwdriver antenna and have only used it mobile so far. It is a great antenna as far as mobile operation goes. I may use it parked in the driveway as one of my fixed antennas for some upcoming contests.You could use the Hi-Q antenna with radials or just leave it on your vehicle, then you don't need the radials. I don't know if that is convenient for you (location of the vehicle relative to the operating position), but it is an option. Good luck, Tom, KG3V On Jan 3, 2010 7:00pm, Maarten van Rossum pd2r.maar...@gmail.com wrote: The antenna by itself maybe small, but keep in mind that in order to make it function properly, you need radials and lots of 'em. If you mount the vertical on the ground, radial length is less important. If you mount is with elevated radials you need at least 2 tuned radials for each band to make it work. But you can find that info on the SteppIR Website as well so you probably no this already ;-) 73, Maarten PD2R 2010/1/3 Mike K2MK k...@comcast.net Hi Frank: Lots of K3 users have the SteppIR BigIR vertical. I know this from being a member of both Yahoo groups. You might want to pose the same question on the SteppIR Yahoo group. http://groups.yahoo.com/group/SteppIR/ And I just thought you would like to know that SteppIR has just announced the addition of an optional coil to the SmallIR that will make that antenna work on 80 through 6 meters as does the BigIR. The SmallIR is half the height of the BigIR. Just a bit more stealthy. Maybe it can be made to look like a flagpole. 73, Mike K2MK From Frank KD8FIP: I am looking for an antenna to work 6 thru 80 meters in a condo development. I presently own a k3/10. Stealth is a very strong consideration. It seems that a SteppIR Vertical or Hi Q antenna would make sense. Does anyone have experience with these two antennas for this type of application? Thanks you for your time and expertise. Frank KD8FIP -- View this message in context: http://n2.nabble.com/Hi-Q-versus-Vertical-tp4246657p4247140.html Sent from the [HAM] 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 __ 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 Back Panel Phones Jack... my solution...
John, I will try responding in case Tom is not monitoring right now. That adapter wires all the tips together and all the rings together. Tom's adapter wires the tip of the plug to the tip of one of the jacks, and wires the ring of the plug to the TIP of the other jack. I do not know of any adapter that does what Tom's does. It allows either a mono or stereo plug to be inserted into the jacks with the speaker wired only to the tip and the sleeve. One speaker will carry the left channel info and the other speaker will carry the right channel. 73, Don W3FPR John H Gibson wrote: Hi Tom, Doesn't the Radio Shack 274-375 stereo adapter at $4.50 do the same thing as your circuit board? See http://www.radioshack.com/product/index.jsp?productId=2102691 __ 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] A K3 Happy Note
Hi to all, Just finished the ARRL RTTY Roundup with my somewhat new K3. It hauled the load this time without a drop of sweat. In early December while in another RTTY contest it developed Hi Cur warnings. That with a DSP board being DOA when I built the radio in September and the noise issue I was ready to heave it out the window. Elecraft in an amazing show of Customer Support took the radio into their care and found a defective final transistor in the LPA causing the Hi Cur warning. With all the discussion about noise issues here on the reflector I've found a combination of settings that makes the noise much more tolerable. Oh BTW, they replaced the DOA DSP board pronto. After a rough start I'm looking forward a long and happy coexistence with my K3. My personal thanks to all the gang at Elecraft for their support when the future of this radio wasn't looking too bright. As a show of my gratitude and confidence in the radio I've ordered a KDVR3 to replace my external DVK. Have a good day and 73. Jim, W0EM __ 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] base K2 RF board
On Sun, 3 Jan 2010, Don Wilhelm wrote: It looks like the height of the column stayed the same, but the width was reduced - the number of capacitors per line is greater in the Rev F manual than in the Rev G. Taking your hint, I downloaded the Rev D manual. Assuming no signficant changes in parts in the interim with Rev G, all parts are accounted for! tnx. Conway Yee __ 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 Back Panel Phones Jack... my solution...
Hi Julian Been there, done that, etc. I think practically every socket on the back of my K3 has something plugged into it. But either I'm overlooking something, or you don't need to make up a special connector. You can buy little adapters that have one 3.5mm stereo jack output and two 3.5mm stereo sockets for input. I think they are made to allow two people to listen simultaneously to an MP3 player. Agreed... BUT... how many of them ISOLATE the RING so it doesn't short out when a mono plug is plugged into the STEREO jack? THAT is what I was trying to avoid as much as providing two individual connections... with what I have, you can plug in either a stereo plug (connected to a SINGLE spkr), or a mono plug (connected to a single spkr) and still not have to worry about the long mono sleeve shorting out the RING on the K3's input. The TIP GND of the K3 PLUG connects to the LEFT spkr, and the RING GND connect to the RIGHT spkr. But the RINGs on BOTH of the INPUT jacks are not connected to anything. 73, Tom __ 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] [K2] PLL Reference Oscillator Question
Hello Don, Hope you had a good New Year's. I replaced X1 and subsequently D16 and D17, with no luck, still reading 12650. Getting a little frustrated. Any suggestions? 73, Byron N6UI bviets wrote: Don, Well everything checked out, i can't find any fault with the installation of those components. Looks like I need to order some parts, unless you can think of anything else I should check. If I haven't mentioned it, thank you for all of your help and attention. 73, Byron N6UI Don Wilhelm-4 wrote: Byron, Fine on all that, so far so good - next is to check L31, X1, R21, D18, C84 and C85 for good soldering, and make certain D16 and D17 are oriented correctly. If nothing is found awry, I would arbitrarily replace X1 as the first step and after than D16 and D17. Remember that this is just like a VXO circuit, no real 'magic', you add capacitance (that is what the varactors should be doing at lower voltages) and the frequency shifts downward. 73, Don W3FPR bviets wrote: Don, I also took the liberty to do the checks on: RP2 pin 2, and the cathodes on D16 and D17 and they all behaved like U6 pin 1: 7.4 and zero when switching between BAND+ and BAND-. 73, Byron N6UI __ 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 -- View this message in context: http://n2.nabble.com/PLL-Reference-Oscillator-Question-tp4219007p4248126.html Sent from the [K2] 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] base K2 RF board
VP8NO writes: There was a time, maybe 8-9 years ago when life was thought to be too short for inventories, many just jumped in and got on with it, I certainly did. 100% success. Yes. I know. Given the instructions, I figured MOST would just jump in and start building. As for me, I prefer to understand the complete inventory. To each his own. I inventory the ENTIRE kit and designate the destination of each and every part. I have each part individually taped onto paper. All inconsistencies MUST be understood before proceeding. This is how I worked out that there were two capacitors short on in the control panel bag and extra in the RF bag. I am also short a few plastic washers. Before soldering each part, I check its identification AGAIN. I believe, however, erroneously that this decreases my risk of putting the wrong part in the wrong location. All this chatter about truncated lines is just getting in the way of building. Perhaps but it keeps me sane and keeps my anal nature from getting the better of me!! And another thing, real men wind torroids ;-) Unless you have a medical condition or other disability. I fully intend to wind my own toroids. My only condition relevant to ham radio is being a bit too anal :) tnx. Conway Yee, N2JWQ __ 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] [KX1] KX1 | KXAT1 ATU questions
My KX-1 has KXB3080, KXAT1, KXPD1 options. I am having trials and tribulations with the KXAT1 tuning my KX-1. My configuration was Cobra Senior Ultralight up 60-66’ at one end 45-50’ at the other with center up about 55-60’ | 81 feet of 450 ohm ladder line runs that runs about 1’ foot through a casement window | Balun Designs 4:1 4113t current balun | 3’ coax with 239 – 239 connectors [703+] OR an amphenol 239/BNC adapter [KX-1]. In this config my Icom 703Plus tuned all bands and forward power was a bit diminished. The Elecraft KX-1 would not tune 40M only. KX1 is getting respectable power and swr on 80, 30 and 20 and 40 will throw a high power value and r9.9. Getting some advice from this reflector (Thanks to Dale - WC7S in WY) and the antenna manufacturer I then switched out the 3 foot coax with a 25 foot coax between the balun and transceiver. In this config my Icom 703Plus tunes all bands at near SWR 1.0 and forward power is exactly at what is set. The 703Plus works like a champ and even better in this config. Now the Elecraft KX1 has high SWR r9.9 on 80, 40, 30 and reads between r3-r5?? on 20M with respectable power levels on all bands. I would have thought the KX1 to perform better as well? Now the 703 is perfect and the KX1 is down on all 4 bands? Could someone help me understand why this might now be? I realize the KX1 tuner is smaller capacity than the Icom internal tuner – but this antenna configuration is quite respectable. I read many anecdotes of the sorts of “I threw a wire up in a tree with my KX1 and it tunes and works lots and lots of countries.” This isn’t exactly throwing a wire in a tree but a fairly standard antenna setup. Is there not enough overall power from the KX1? I put a call into Elecraft before/at the holiday and they are getting an answer for me on my previous question as to how to get the KX1 to send a continuous wave when the KXAT1 is in bypass for the external tuner. It appears to me that it sends dits or dahs when ATU is set to external tuner ATU == CAL. I would try to study the situation more with the THP HC200-AT autotuner but I’m unclear at the moment what the theory/design is with the KXAT1 in bypass mode. I thank you for your advice and thoughts in advance. Dan Ad1p __ 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] [KX1] KX1 | KXAT1 ATU questions
Dan, Would you please borrow an antenna analyzer from your friend and publish the impedance (both resistive and reactive components) of that antenna measured through both the 3 ft coax and the 25 foot coax. After having that data, perhaps we can give you an intelligent answer instead of mere guesses. I understand that the KX1 works nicely into a dummy load - we need to figure out how to help you with your antenna, but without measurements, that task is not possible. 73, Don W3FPR Daniel Paul Perez wrote: My KX-1 has KXB3080, KXAT1, KXPD1 options. I am having trials and tribulations with the KXAT1 tuning my KX-1. My configuration was Cobra Senior Ultralight up 60-66’ at one end 45-50’ at the other with center up about 55-60’ | 81 feet of 450 ohm ladder line runs that runs about 1’ foot through a casement window | Balun Designs 4:1 4113t current balun | 3’ coax with 239 – 239 connectors [703+] OR an amphenol 239/BNC adapter [KX-1]. In this config my Icom 703Plus tuned all bands and forward power was a bit diminished. The Elecraft KX-1 would not tune 40M only. KX1 is getting respectable power and swr on 80, 30 and 20 and 40 will throw a high power value and r9.9. Getting some advice from this reflector (Thanks to Dale - WC7S in WY) and the antenna manufacturer I then switched out the 3 foot coax with a 25 foot coax between the balun and transceiver. In this config my Icom 703Plus tunes all bands at near SWR 1.0 and forward power is exactly at what is set. The 703Plus works like a champ and even better in this config. Now the Elecraft KX1 has high SWR r9.9 on 80, 40, 30 and reads between r3-r5?? on 20M with respectable power levels on all bands. I would have thought the KX1 to perform better as well? Now the 703 is perfect and the KX1 is down on all 4 bands? Could someone help me understand why this might now be? I realize the KX1 tuner is smaller capacity than the Icom internal tuner – but this antenna configuration is quite respectable. I read many anecdotes of the sorts of “I threw a wire up in a tree with my KX1 and it tunes and works lots and lots of countries.” This isn’t exactly throwing a wire in a tree but a fairly standard antenna setup. Is there not enough overall power from the KX1? I put a call into Elecraft before/at the holiday and they are getting an answer for me on my previous question as to how to get the KX1 to send a continuous wave when the KXAT1 is in bypass for the external tuner. It appears to me that it sends dits or dahs when ATU is set to external tuner ATU == CAL. I would try to study the situation more with the THP HC200-AT autotuner but I’m unclear at the moment what the theory/design is with the KXAT1 in bypass mode. I thank you for your advice and thoughts in advance. Dan Ad1p __ 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 No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.725 / Virus Database: 270.14.124/2598 - Release Date: 01/03/10 04:41:00 __ 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 CW Net Report for January 3rd 4th, 2010
Good Evening, Twenty meters was not kind today. I did get a little relay help from Tom and then he acted as NCS for a bit. Neither of us could hear very well. Luckily forty meters was much better. The weather reports (except for one 77 degree temperature) was chilly, to cold, to quite cold. Below zero across North Dakota and Minnesota with the teens across the next tier of states all the way to the Atlantic. Colorado had warmer temperatures and then there was Rick in Alaska with a balmy 16 degrees. It is all in one's perspective :) I used to think anything between 10 above and 20 below was just right but I guess I am getting soft living out west. I don't get to ski though so life is not as good :( On to the lists = On 14050 kHz at 2300z: AE6IC - Fred - CA - K3 - 2241 W0CZ - Ken - ND - K3 - 457 N0SS - Tom - MO - K3 - 008 K4JPN - Steve - GA - K2 - 1422 AB9V - Mike - IN - K3 - 398 K6PJV - Dale - CA - K3 - 1183* QNI # 160 * AD6GI - Chuck - CA - K3 - 355 N0AR - Scott - MN - K2 - 4866 ** QNI # 220 ** N7KRT - Jeff - TX - K2 - 5471 K7SJ - Roger - WA - K3 - 75 W0RSR - Mike - CO - K2 - 5767 W0NTA - Dick - CO - K3 - 1208 On 7045.32 kHz at z: N7CQR - Dan - OR - K2 - 1010 N0TA - John - CO - K3 - 994 W6SU - John - CA - K3 - 1303 AB9V - Mike - IN - K3 - 398 W0CZ - Ken - ND - K3 - 457 K9DMV - Joe - IL - K2 - 5628 N7KRT - Jeff - TX - K2 - 5471 K6PJV - Dale - CA - K3 - 1183 N0AR - Scott - MN - K2 - 4866 W0RSR - Mike - CO - K2 - 5767 K7SJ - Roger - WA - K3 - 75 W8OV - Dave - TX - K3 - 3139 AE6IC - Fred - CA - K3 - 2241 K1THP - Dave - CT - K3 - 686 W6JXH - Ron - CA KD5ZLB - Edwin - LA - K3 - 3147 WI6O - John - CA - K1 - 922 KL7CW - Rick - AK - KX1 - 798 Our first nets of the new year went pretty well although there was quite a bit of QRN and QSB on twenty meters and QSB, QRN, and QRM on 40 meters. The odd frequency chosen on the second net was due to the RTTY folks lower and a faster CW op a bit higher. I was right in between them and it worked OK. The teletype folks never came up to where I was working but I did get quite a few folks on top of me sending odd dits and dahs. On twenty meters there was one op who sent a zillion dits as he tuned and then a few Vs until he finally decided to listen to the frequency. Guess once he got tuned up he could hear it was in use. From what I have read it looks like the next three weeks will be very cold throughout the eastern two-thirds of the US. It has something to do with the cooling cycles of both oceans. However, that cooling does not apply out here. Maybe I won't have to use much wood this week although the damp, chilly temperatures seem much colder than they really are. When I hear 25 below zero I know it is much drier there and the cold does not effect folks as much as this wet cold does here. Although when the wind blows that frigid air does cut to the bone. I still miss it. Until next week stay well and stay warm, 73, Kevin. KD5ONS (Net Control Operator 5th Class) - __ 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] [K1] K1 Low power
Ok first let me this is the same K1 from earlier. The 40m portion works just fine with 6ish watts out. Heck I even had one QSO to break it in.Now for the 20m, I did the alignments and can only get 2.5 watts out. Tried and tried again to align it and can only get around 2.5 watts. It is getting late for me tonight and I have to work tomorrow so I will tackle it again tomorrow. Any Ideas? Thanks Rick/WA6ES -- View this message in context: http://n2.nabble.com/K1-Low-power-tp4248493p4248493.html Sent from the [K1] 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] OT: Dayton Hamvention 2010
Julius Fazekas n2wn wrote: Johnny, Check here: http://www.hamvention.org/activities.php QRPers attend FDIM. http://fdim.qrparci.orgNot only for QRPers! Contesters go to Contest University. http://www.contestuniversity.com/ There are banquets for DXers, Contesters, Top Banders and others. And QRPers at FDIM Most of the event related hotels are booked already. Access to a vehicle is a must. Yes on the event related hotels. But . QRP-ARCI has a bus between the QRP Hotel and the Hamvention on Friday Saturday, so you really don't need a car! 72 73HankK8DD -- --- rm -r * --- __ 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 results (1-3-10)
We had a good net today with a total of 33 participants again. Signals were generally good. We ran for about 30 minutes. The only discussions were on audio quality checks. Thanks to everyone who checked in. Here is the list of participants. Station NameQTH Rig S/N W2RWA DickNY K3 2603 W4TMCaryVA K3 3491 W5ETJ GaryTX K3 3227 KD1NA DaveMA K3 934 W0NTA DickCO K3 1787 K4GCJ Garry NC K3 1597 W1DFB Don MA K3 2937 W3FPR Don NC K3 20 NF8JPaulMI K3 758 K8MBY PhilOH K3 609 AB2TC Ken NY K3 82 KD6LAZ DickCA K3 3697 K8DHA JohnMI K3 3012 N9YKE Don WI K3 2505 W4PFM PaulVA K3 1673 K0JWC Jim MI K3 3447 W5EWA StanTX K2 4216 KA1OZ DickMA K3 859 W0FMTerry MO K3 474 K7AGE Randy CA K3 2321 W4RKS Jim AL K3 3618 ZL1PWD Peter NZ K3 139 K8EAG Gil MI K3 99 K7SJRoger WA K3 75 KE4INM Jim FL K3 3307 AI4VZ George CA K3 242 KA0NCR Arnie NE K3 185 K2LTS PeteNY K3 1028 W8YMO Harry OH K3 166 KB3FBR Joe PA K2 6187 W8OVDaveTX K3 3139 WD9CKY Larry IL Icom NS7PPhilOR K3 1826 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] Elecraft SSB Net results (1-3-10)
My SteppIR was lowered down to 15 feet, pointing north and I was running 100 watts Phil. That's why someone took pity on me and relayed for me. My K3 is on the bench awaiting parts and the fabled DSP upgrade board. It was nice using the K2 for a change. Stan Rife W5EWA -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Phil and Christina Sent: Sunday, January 03, 2010 11:51 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Elecraft SSB Net results (1-3-10) We had a good net today with a total of 33 participants again. Signals were generally good. We ran for about 30 minutes. The only discussions were on audio quality checks. Thanks to everyone who checked in. Here is the list of participants. Station NameQTH Rig S/N W2RWA DickNY K3 2603 W4TMCaryVA K3 3491 W5ETJ GaryTX K3 3227 KD1NA DaveMA K3 934 W0NTA DickCO K3 1787 K4GCJ Garry NC K3 1597 W1DFB Don MA K3 2937 W3FPR Don NC K3 20 NF8JPaulMI K3 758 K8MBY PhilOH K3 609 AB2TC Ken NY K3 82 KD6LAZ DickCA K3 3697 K8DHA JohnMI K3 3012 N9YKE Don WI K3 2505 W4PFM PaulVA K3 1673 K0JWC Jim MI K3 3447 W5EWA StanTX K2 4216 KA1OZ DickMA K3 859 W0FMTerry MO K3 474 K7AGE Randy CA K3 2321 W4RKS Jim AL K3 3618 ZL1PWD Peter NZ K3 139 K8EAG Gil MI K3 99 K7SJRoger WA K3 75 KE4INM Jim FL K3 3307 AI4VZ George CA K3 242 KA0NCR Arnie NE K3 185 K2LTS PeteNY K3 1028 W8YMO Harry OH K3 166 KB3FBR Joe PA K2 6187 W8OVDaveTX K3 3139 WD9CKY Larry IL Icom NS7PPhilOR K3 1826 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 No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.725 / Virus Database: 270.14.124/2598 - Release Date: 01/03/10 03:41:00 __ 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
