Re: [Elecraft] An interested link
It's becoming more recognized that the improved fidelity of ESSB has signal-to-noise advantages over the old traditional forms of narrower SSB ... with the decline of new amateur radio operators to populate the bands, the wider bandwidth necessary for high quality SSB is not as much of an issue as it was 10 or 20 years ago. Both of these facts are complete falsehoods and are the very reason that the FCC needs to define acceptable bandwidth based emission standards below 30 MHz. Specifically, SSB should be limited to a 2800 Hz bandwidth consistent with other SSB based communications services regulated by the FCC and/or NTIA. Similarly, AM - except for legacy equipment - should be limited to 6 KHz bandwidth. In other words, the maximum modulating frequency should be set at 3 KHz - or no more than 3200 Hz. There is no difference between those who operate ESSB (wide SSB) and those who continue to use transmitters with excessive key clicks and/or transmitted phase noise on CW. Such operation is not consistent with good engineering practice. Those who want to operate wideband and hi-fi modes should do so with wideband FM on frequencies above 440 MHz. 73, ... Joe, W4TV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of David Gilbert Sent: Sunday, September 27, 2009 12:23 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] An interested link The History section of that web site applauds the fact that ESSB enthusiasts have been able to push their 3 KHz bandwidth rigs to 4 KHz and beyond using external equalization, and it points out that the leading edge for EESB is now moving past 6 KHz in transmitted bandwidth thanks to some of the new SDR rigs. Here are a couple of illuminating and disturbing quotes: It's becoming more recognized that the improved fidelity of ESSB has signal-to-noise advantages over the old traditional forms of narrower SSB ... with the decline of new amateur radio operators to populate the bands, the wider bandwidth necessary for high quality SSB is not as much of an issue as it was 10 or 20 years ago. One of the hams lauded in that section for his work with ESSB lived near me when I was still in Scottsdale, and you could hear his splatter as much as plus/minus 8 KHz when he was on the air with his buddies on 20m in the evening. He was a casual friend of mine so I mentioned it to him, and his dismissive answer was that he must be overdriving my rig ... even though I told him that I had checked for that by using a piece of wire for an antenna to keep his signal below S7. I often monitored those guys while I was doing work-related stuff on the computer. They constantly tweaked their equalizers and critiqued the sound of each other's modulation, but I never once heard any of them check to see how wide they were. I have no problem at all with people experimenting with ESSB as long as they avoid interference with other activity on the band, but promoting ESSB as a mainstream mode on the HF bands seems to me to be the same as advocating an across-the-board return to AM, complete with its power inefficiencies and waste of spectrum. I just don't get it. It's just another reason for me to stick with CW, I guess ... Dave AB7E Hector Padron wrote: Some ones might be interested to read this: http://www.essb.us/index.html AD4C __ 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] An interested link
Fortunately the K3 is quite good on AM transmit, unlike legacy equipment often used. I don't know about elsewhere, but here in the UK there are 80m AM nets where some of the stations run original AM gear without any additional audio filtering, one was measured at +/- 12 KHz by a fellow ham with an SDR receiver. The operator seemed indifferent to the fact his transmission was excessively wide and carried on regardless. The guy who measured the wide signal used home built AM gear himself, but had a multi-pole active filter of a similar specification to that used by broadcast stations to achieve their skyscraper envelopes as seen on a panoramic adapter or SDR receiver. The UK license has the clause The bandwidths of emissions should be such as to ensure the most efficient utilisation of the spectrum. 73 Dave, G4AON K3/100 #80 Joe, W4TV wrote: Similarly, AM - except for legacy equipment - should be limited to 6 KHz bandwidth. In other words, the maximum modulating frequency should be set at 3 KHz - or no more than 3200 Hz. __ 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] Serial port RTS problem [was: Different mode]
Bill W5WVO wrote: Hi Don, i had just come to the same suspicion when I read your email. And we are right. My homebrew desktop system (Tyan Tiger dual AMD board) works fine. This is a Dell problem. I will look around to see if there is an updated serial port driver that fixes this. I will be pleasantly surprised if there is. In all likelihood, I will simply have to eschew using these control lines on this machine. Have you tried looking in Device Manager at the properties for the serial port? On mine, on the tab where you can set the baud rate etc. there is a button marked Advanced Settings. Unfortunately when I clicked it a message came up something like you need write access to the registry to change these settings so I couldn't see what these settings were. You might be luckier. - 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/Different-mode-tp3715533p3720107.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] [K3] U12 failed resistance check
Hi all. I sent this on to support, but I thought I might archive the issue in the listserve to help others. I completed assembly of my K3 up to page 45. Other than the antenna module connectors being super hard to mate because of insertion firmness, all went well. The next step was the resistance check. 12v connectors - 800K ohms ( 3K ohm) R36 test point - 240 ohms ( 150 ohm) U12 - 260 ohm *** ( 500 ohm) U13 - 420 ohm ( 150 ohm) SO, U12 failed the test. I checked for shorts everywhere. No luck. I also completely disassembled the RF board back to bare. Still the resistance checks remain the same. I also used two other multimeters and got the same results. I also have made sure that I'm not being dyslexic and looking at the wrong voltage regulator. I'll be waiting to hear from support on suggestions and post any followup/resolution here. And, yes, I have (and used!) an anti-static mat and wrist strap. Mike KB3ELW __ 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 Output Buffer Mod Kit
I installed the K3IOBUFFKT in both of my K3s yesterday. I removed the 1K SMD chip very easily with two soldering irons. I don't think it is absolutely necessary to use two irons, however. Like another person said, I used a small jewelers screwdriver to hold down the new chip while tacking one end. The leaded resistor in this kit is also very usable because it is small enough to fit the SMD space very nicely and can easily be soldered to the feed-through hole on one side and the solder pad on the other. Roy Morris W4WFB __ 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] Serial port RTS problem [was: Different mode]
You need to login in as administrator then you will have full access or somehow your anti-virus/security software has locked you out. That ought to be fun to find. Bob KB1FRW 73 Have you tried looking in Device Manager at the properties for the serial port? On mine, on the tab where you can set the baud rate etc. there is a button marked Advanced Settings. Unfortunately when I clicked it a message came up something like you need write access to the registry to change these settings so I couldn't see what these settings were. You might be luckier. __ 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] K3/100 ERR 12V?
Aptos, I have a problem: I have been working the RTTY contest this weekend and everything has been working smoothly. 700+ Qs in 13 hours. This morning after being on the air for about one hour and running a pileup the rig stopped keying and I got a ERR 12V msg. Here is the setup: K3/100 w/55w to Acom 1000, output 600w. Interface is microHAM mK II. Software N1MM Antenna is Steppir, swr below 1.2 on 15m and 20m. I have tried a different power supply but no change...the voltage on both fluctuate between 13.9 and 13.3; the PA temps do not seem to matter as this happens when temps are as high as 40C or low as 25C. I tried with amp in and out of the line and with different software, N1MM then WinTest. When I have the ERR12V msg, the power defaults to 5w and 12w becomes max...the rig keys ok only after cycling the power off/on; then will key up to 12 w in cw and rtty. I have to cycle the power on/off to reset the msg then I can move the power up to 55w...as soon as I key the rig, the error comes back and power reduces to 5w and does not key anymore in cw nor rtty. Gentlemen/ladies, any suggestions? 73 Tom CX7TT P.S. No T-storms or adverse weather here... __ 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 your K2
Let me build your K2. I have built more than 280 K2's to date. My prices are reasonable, and you receive a new radio, with the options you want. Please respond off of the reflector. 73 Alan W1HYV _ Hotmail® has ever-growing storage! Don’t worry about storage limits. http://windowslive.com/Tutorial/Hotmail/Storage?ocid=TXT_TAGLM_WL_HM_Tutorial_Storage_062009 __ 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] An interested link
There might be 2 distinct problems: a) the bandwidth of the signal you think you have and b) splatter caused by over-modulating and over-driving. Starting with a wide-ish signal of say 6 or 7kHz, ie dsb full carrier might be ok in uncrowded bands, but add badly adjusted modulation and drive to another badly adjusted amplifier (a non-linear linear amplifier) and you've got double trouble that can be heard across the world even worse than over-driving ssb. Couple that with the sort of drift those boat-anchors are capable of and I can see why they have a bad reputation. All of which can be corrected by proper adjustment which takes more skill and understanding not now taught. David G3UNA Fortunately the K3 is quite good on AM transmit, unlike legacy equipment often used. I don't know about elsewhere, but here in the UK there are 80m AM nets where some of the stations run original AM gear without any additional audio filtering, one was measured at +/- 12 KHz by a fellow ham with an SDR receiver. The operator seemed indifferent to the fact his transmission was excessively wide and carried on regardless. The guy who measured the wide signal used home built AM gear himself, but had a multi-pole active filter of a similar specification to that used by broadcast stations to achieve their skyscraper envelopes as seen on a panoramic adapter or SDR receiver. The UK license has the clause The bandwidths of emissions should be such as to ensure the most efficient utilisation of the spectrum. 73 Dave, G4AON K3/100 #80 Joe, W4TV wrote: Similarly, AM - except for legacy equipment - should be limited to 6 KHz bandwidth. In other words, the maximum modulating frequency should be set at 3 KHz - or no more than 3200 Hz. __ 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] K3/100 ERR 12V?
Try resetting the circuit breaker on the rear panel of the K3. See the Error Message List in the back of the manual for details. 73, Lyle KK7P __ 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] An interested link
This is how I see the use of ESSB, nobody should have more than 3Khz maximun bandwith on TX,with less than 3Khz you will be able still to have an excellent audio quality,normally a radio that has a freq response from 100 to 3100 Hz for a total of 3Khz BW will always sound great so far mic and comp levels be properly adjusted not to compress the audio too much,even Icom radios that respond from 70 to 2900hz sound all terrific,but anything beyond that bandwith will sound moody and splatters will be terrible all over. On the other hand splatters are not only confined to ESSB,a normal high pitch or normal 2.4Khz bandwith could also has same or maybe more splatters IF the operator doesn't know how to properly set his station,probe of that is the contests where most of the stations trying to brake the pile-ups sqeeze their compressors to the maximun and also overdriving their amps to reach the station they want and therefor band becomes the battle camp and splatters are all over. So either way ESSB or non ESSB can create damage to the bands. Its just good amateur practices what makes a clean signal. AD4C To have or not to have a K3,that is the question --- On Sun, 9/27/09, David Cutter d.cut...@ntlworld.com wrote: From: David Cutter d.cut...@ntlworld.com Subject: Re: [Elecraft] An interested link To: Dave G4AON elecr...@astromag.co.uk, elecraft@mailman.qth.net Date: Sunday, September 27, 2009, 2:19 PM There might be 2 distinct problems: a) the bandwidth of the signal you think you have and b) splatter caused by over-modulating and over-driving. Starting with a wide-ish signal of say 6 or 7kHz, ie dsb full carrier might be ok in uncrowded bands, but add badly adjusted modulation and drive to another badly adjusted amplifier (a non-linear linear amplifier) and you've got double trouble that can be heard across the world even worse than over-driving ssb. Couple that with the sort of drift those boat-anchors are capable of and I can see why they have a bad reputation. All of which can be corrected by proper adjustment which takes more skill and understanding not now taught. David G3UNA Fortunately the K3 is quite good on AM transmit, unlike legacy equipment often used. I don't know about elsewhere, but here in the UK there are 80m AM nets where some of the stations run original AM gear without any additional audio filtering, one was measured at +/- 12 KHz by a fellow ham with an SDR receiver. The operator seemed indifferent to the fact his transmission was excessively wide and carried on regardless. The guy who measured the wide signal used home built AM gear himself, but had a multi-pole active filter of a similar specification to that used by broadcast stations to achieve their skyscraper envelopes as seen on a panoramic adapter or SDR receiver. The UK license has the clause The bandwidths of emissions should be such as to ensure the most efficient utilisation of the spectrum. 73 Dave, G4AON K3/100 #80 Joe, W4TV wrote: Similarly, AM - except for legacy equipment - should be limited to 6 KHz bandwidth. In other words, the maximum modulating frequency should be set at 3 KHz - or no more than 3200 Hz. __ 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] K3 Concentric Knobs
I don't think it can be emphasized enough...when installing or repositioning the concentric knobs, very LIGHTLY tighten them. The light blocker strips in my new K3 were not properly blocking the front panel light from showing through the buttons. To correct this it necessitated removing all the knobs from the front panel. When I replaced them, several crumbled when I tightened the screws. I know, this has been covered many times before, but I did not know JUST how fragile these knobs are. From now on I am going to tighten them only until the screws touch the shaft. Roy Morris W4WFB __ 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] VFO Tunning Noise Reduction MOd
I have my K3- S/N 3278 open on the bench to do this mod. I find the via holes near C66 not open. They have been soldered from the other side. Is this an indication that this mod was down before it ship to me 7/10/09?? Or should I just tack on the resistor/diode to them? de K2GN/Larry K3 - S/N 3278 __ 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] VFO Tunning Noise Reduction MOd
Larry, One of my K3's had solder in the holes and one didn't. With the one with solder in the holes I just put the component lead (after trimming and tinning) in the center of the hole and put the soldering iron tip on the hole and lead. This melted the solder and the lead pushed into the hole. N2TK, Tony -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Larry - K2GN Sent: Sunday, September 27, 2009 1:02 PM To: Elecraft - K3 Subject: [Elecraft] VFO Tunning Noise Reduction MOd I have my K3- S/N 3278 open on the bench to do this mod. I find the via holes near C66 not open. They have been soldered from the other side. Is this an indication that this mod was down before it ship to me 7/10/09?? Or should I just tack on the resistor/diode to them? de K2GN/Larry K3 - S/N 3278 __ 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] Serial port RTS problem [was: Different mode]
Julian, G4ILO wrote: Have you tried looking in Device Manager at the properties for the serial port? On mine, on the tab where you can set the baud rate etc. there is a button marked Advanced Settings... Yes. The advanced settings have nothing to do with the RS-232 control signals, unfortunately. And there is no replacement serial driver. Googling various combinations of key words turns up nothing related to this bug. Apparently this Dell RS-232 design error is so arcane relative to what virtually all laptop users use their computers for, that nobody has ever complained about it. :-) My last step is to go into the BIOS and see if there are any controls in there that live below the level of the OS. Oh well. Bill W5WVO __ 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] Serial port RTS problem [was: Different mode]
Bill, even if you make BIOS changes to a port it won't affect the port's operation under Windoze, since it's all controlled by a kernel mode driver. matt W6NIA On Sun, 27 Sep 2009 11:18:17 -0600, you wrote: Julian, G4ILO wrote: Have you tried looking in Device Manager at the properties for the serial port? On mine, on the tab where you can set the baud rate etc. there is a button marked Advanced Settings... Yes. The advanced settings have nothing to do with the RS-232 control signals, unfortunately. And there is no replacement serial driver. Googling various combinations of key words turns up nothing related to this bug. Apparently this Dell RS-232 design error is so arcane relative to what virtually all laptop users use their computers for, that nobody has ever complained about it. :-) My last step is to go into the BIOS and see if there are any controls in there that live below the level of the OS. Oh well. Bill W5WVO __ 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] Serial port RTS problem [was: Different mode]
Thanks for that info, Matt. Did not know that. No controls in the BIOS anyway. I'll just have to live with it I guess. Fortunately, I can use VOX for TX control and don't really need to use the RS-232 control signals. Bill W5WVO Matt Zilmer wrote: Bill, even if you make BIOS changes to a port it won't affect the port's operation under Windoze, since it's all controlled by a kernel mode driver. matt W6NIA On Sun, 27 Sep 2009 11:18:17 -0600, you wrote: Julian, G4ILO wrote: Have you tried looking in Device Manager at the properties for the serial port? On mine, on the tab where you can set the baud rate etc. there is a button marked Advanced Settings... Yes. The advanced settings have nothing to do with the RS-232 control signals, unfortunately. And there is no replacement serial driver. Googling various combinations of key words turns up nothing related to this bug. Apparently this Dell RS-232 design error is so arcane relative to what virtually all laptop users use their computers for, that nobody has ever complained about it. :-) My last step is to go into the BIOS and see if there are any controls in there that live below the level of the OS. Oh well. Bill W5WVO __ 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] [K3] N1MM ESC doesn't stop DVK
Hi, i found in the archives a thread where the K3 DVK is controlled by N1MM. start recording and playing messages works very well. It should be also possible to stop the Playback by pressing ESC. Not for me and i found nothing on N1MM. I got info from N1MM Mailing list there is no CAT command send out by pressing ESC, I'm a bit confused how it should work. Any hints for this? 73 Olli -- Oliver Grossmann | DH2WQ | oliver.grossm...@bretzi.de __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Firmware Ver 3.30
Jim, You do not need to worry about having 3.30 on your K3. The beta versions are being used by many K3 owners regularly and have been exceptionally solid in my experience. I do not have the sub receiver and I don't have multiple external transverters, so it might be that I am not stressing mine too much, but I do pound both my K3s with heavy duty contesting periods and have had ZERO complaints. Your mileage may vary, but I would worry about other issues before I would worry about beta firmware. If you still feel deeply concerned, you can downgrade your K3 to firmware that is considered released. You will probably see that several nice features go away, but it is certainly your choice to make. Elecraft is so responsive to their customers that it is really hard to believe they can stay in business. If you had a complaint about your firmware, I'll bet they start digging for a solution before you could hit your PTT button. Elecraft gives an honest vetting to each issue they are told about even if some of us who don't have the issue might jump to the conclusion that the issue is owner caused. I see other manufacturers who are asked for help on an issue and their first response is Customer, you are not as smart as we are and your installation caused the problem [paraphrased ;-)] Bottom line, enjoy your K3 and experiment with everything you care to dig into. You'll have a ball and be amazed by Elecraft's support. 73, Bob K5WA Message: 1 Date: Sat, 26 Sep 2009 16:48:45 + From: Jim Harris w...@q.com Subject: [Elecraft] Firmware Ver 3.30 To: Elecraft Email elecraft@mailman.qth.net Message-ID: bay117-w2341941d88e825c3ba67498b...@phx.gbl Content-Type: text/plain; charset=iso-8859-1 Hi, I've had my K3 (S/N 3431) up and running about two weeks. It arrived with version 3.30 installed. I'm understanding from reading here on the reflector that version is beta and is not available for download by K3 owners due to some unforeseen difficulty. Two points. So far I've found no major issues other than S-2 noise on 20 meter where it's not present on my IC-756ProIII. On the other hand I'm somewhat concerned about receiving my radio with unreleased software making me a unknowing test subject. Should I revert to an earlier version to avoid learning about my new radio with unreleased software that will obviously change in the near future. Second point, to Elecraft management. It seems unwise business practice to provide a product to customers that has not gone through necessary testing and release and especially without the customers knowledge. If I'm misunderstanding something here please help me understand and I do apologize if I do misunderstand. 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] VFO Tunning Noise Reduction MOd
Larry, use solder wick to clear the hole first. It makes a neater job and reduces the risk of excess solder dropping through the other side of the board when soldering a component in. 73 Dave, G4AON K3/100 #80 == I have my K3- S/N 3278 open on the bench to do this mod. I find the via holes near C66 not open. They have been soldered from the other side. Is this an indication that this mod was down before it ship to me 7/10/09?? Or should I just tack on the resistor/diode to them? de K2GN/Larry K3 - S/N 3278 __ 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] An interested link
I don't understand why some people like to limit other peoples activity, or choices. It seems to me like there is very little important communication going on in ham radio, so why stress the narrow bandwidth? Would it block some critical or important communication? Ham radio just seems like a bunch of people who enjoy fooling with radio equipment, so why not just let them fool with it? What about operating on an empty band, the operator still must (by law) sound like a cheap cell phone? There are other modes much narrower than ssb, why not not ban ssb as wasting spectrum? People should try to get along, I dislike contests, they can take over and ruin a band, I am not fond of RTTY, or slow scan TV, or ssb, or many other things other hams do, but the last thing I would want to do is restrict something that others find enjoyable. Brett N2DTS __ 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] N1MM ESC doesn't stop DVK
I don't know N1MM, but to cancel the DVR you have to tab the REC key. While in K31 mode, you have to send SWT37; I hope this helps. 73 de Tom, DL2RUM Oliver Grossmann wrote: Hi, i found in the archives a thread where the K3 DVK is controlled by N1MM. start recording and playing messages works very well. It should be also possible to stop the Playback by pressing ESC. Not for me and i found nothing on N1MM. I got info from N1MM Mailing list there is no CAT command send out by pressing ESC, I'm a bit confused how it should work. Any hints for this? 73 Olli -- Oliver Grossmann | DH2WQ | oliver.grossm...@bretzi.de __ 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/N1MM-ESC-doesn-t-stop-DVK-tp3721288p3721545.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] VOX
On Sat, 26 Sep 2009 13:41:09 -0600, Bill W5WVO wrote: I have always used VOX for WSJT keying I have always used VOX for both SSB and data modes, even when doing serious contesting. Works GREAT, simplifies control circuitry. Not a cough in a carload. The K3 has a particularly good VOX system. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] ESSB and Selfishness (or Learning to Play Nice in the Sandbox)
On Sun, 27 Sep 2009 14:31:19 -0400, Brett Gazdzinski wrote: I don't understand why some people like to limit other peoples activity, or choices. Human society DEPENDS on limitations on other peoples activity. To name only a few simple ones, we have traffic lights, speed limits, lane changing rules, and parking rules. If I play loud music I'll disturb my neighbors. There are hundreds of other ways that we as human beings must be considerate of our neighbors. Most of these include limits on someone's behavior. It seems to me like there is very little important communication going on in ham radio, so why stress the narrow bandwidth? Would it block some critical or important communication? One roundtable of a half dozen guys on ESSB transmitting as described in a previous email can easily chew up 25 kHz of a band, and in extreme cases, twice that. What about operating on an empty band, the operator still must (by law) sound like a cheap cell phone? I have no problem ESSB or similar modes on an empty band. But propagation, lousy receivers, a big power amp, and local noise can turn one guy's hot DX band into another's dead band. People should try to get along, I dislike contests, they can take over and ruin a band, I've been working the CQWWRTTY contest this weekend. That is burning about 40 kHz on 80M (3560-3600), less than 75 kHz on 40M, and about 100 kHz on 20M (14050-14150). There are probably more than 1,000 active stations worldwide sharing that bandwidth, and this isn't a BIG contest -- the big contests have 5-10 times that number. That's just over 200 kHz divided between more than 1,000 guys, and it's 20 times less piggish than those six guys in an ESSB roundtable! These contests prohibit activity on 160M, 30M, 17M, and 12M, and it is few contests burn more than one-third of a band. Compare this with normal activity. A few days ago, I wanted to check out a new 40M dipole I'd put up for contesting. It was 3pm on a weekday in CA, and I heard one one CW or digital signal (a guy in Detroit, more than 2,000 miles away), and only two SSB QSOs. And my QTH is quiet, in a redwood forest with few neighbors! 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3] K3 FSK power transients
Dave - I experience the same issue and Elecraft indicated that the FSK mark/space power fluctuations are caused by the transmit filter's passband ripple and where the transmit signal falls within the filter's passband. I'm using the standard 5 pole 2.7khz filter. They indicated the 8 pole filter should be flatter. 73 Phil NA4M Dave Hachadorian wrote: I'm getting my K3's set up for the CQWW DX RTTY, and notice that there is a significant variation in power output whenever the FSK goes from mark to space or space to mark. One of these K3's is driving a high gain tetrode amp, and the amp's screen current is jumping all over the place. The power transient is only at the time of transition. The steady-state power of the mark and space are equal. I've complained about this before, but it seems to be even worse now. I'm using FW rev 3.30. This amplitude modulation has got to be producing some illegal sidebands. Dave Hachadorian, K6LL Yuma, AZ . __ 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/K3-FSK-power-transients-tp3712691p3721951.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] An interested link
On Sep 27, 2009, at 1:31 PM, Brett Gazdzinski wrote: I don't understand why some people like to limit other peoples activity, or choices. Because, like everything else, ham radio is tribal. And we always want to limit other's activities (ham radio, architectural committees, political parties, religions -- all the tribes we belong to have something to say about kicking the other guy. It seems to me like there is very little important communication going on in ham radio, so why stress the narrow bandwidth? Would it block some critical or important communication? Because the figurative MY rights to communicate are always more important than the figurative YOUR rights to communicate. There seem to be more and more hams who are just angry that their are any other hams who don't do precisely what they do, and we have more road rage than makes any sense at all. We're killing our valued hobby by all of the screaming, literal anger, and infighting over mode, frequencies, bandwidth, operating -- and maybe just enjoy picking fights, to the detriment of all of us. Grant/NQ5T __ 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] RX/SUB and XIT interaction
Bill,Is there any way in diversity mode to have different BW in diversity and REV? It seems any change to bandwidth in REV also carries to the main frequency. BTW, FT5GA lists you on 80 but not on 160m? Is this a mistake? Ignacy On Mon, Sep 21, 2009 at 6:13 AM, Bill W4ZV (via Nabble) ml-user+39082-81360...@n2.nabble.comml-user%2b39082-81360...@n2.nabble.com wrote: On Sun, Sep 20, 2009 at 10:04 PM, Ignacy (via Nabble) [hidden email]http://n2.nabble.com/user/SendEmail.jtp?type=nodenode=3684278i=0 wrote: Tnx for the hint. With REV it even provides the diversity mode for the other frequency. Not only that, if you have VFO A locked on the DX freq, when you press REV, the VFO A knob is temporarily unlocked so you can change your TX frequency. Release REV and you go back to locked on the DX on VFO A. Very clever! I used exactly this method to work FT5GA last night for DXCC #327 on Topband. BIG SMILES! 73, Bill Bill W4ZV wrote: Ignacy wrote: Because FT5GA is weak on 40m I listen to it using the diversity mode. The reception is much better. For transmit I attempted to use XIT. However, with XIT the SUB frequency changes. Is this on purpose? Ignacy There's a simpler way to do what you want. Enter diversity RX mode and then press SPLIT. TX is on VFO B and Diversity RX on VFO A. You can momentarily listen on TX freq by pressing REV...release to go back to RX freq. I also like to lock VFO A so that I don't accidentally bump it when tuning TX with VFO B. 73, Bill -- View message @ http://n2.nabble.com/RX-SUB-and-XIT-interaction-tp3681934p3684278.html To unsubscribe from Re: RX/SUB and XIT interaction, click here (link removed) . -- View this message in context: http://n2.nabble.com/RX-SUB-and-XIT-interaction-tp3681934p3722167.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] Firmware Ver 3.30
On Sep 27, 2009, at 10:40 AM, K5WA wrote: You do not need to worry about having 3.30 on your K3. __ My K3 shipped with 3.25 about a month ago. I had one or two noise burst incidents and moved to 3.3 even though I had not intended to change FW unless it was a production release. No noise bursts with 3.3. Then I started to experiment with AGC SLP and THR. And I experienced a noise burst. The good news is that a power cycle puts you right back where you were in seconds. I changed the AGC SLP back to the default value of 12 and I have not had another noise burst. YMMV If you experience a noise burst, send the specifics to Lyle per his posting of Sept 7. near the bottom of this page: http://n2.nabble.com/MCU-3-30-DSP-2-26-td3595335.html#a3598081 73 - Steve WB6RSE __ 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 2-tone IMD test.
Alex, Can you please be specific about which HW mods you installed? Are they all published by Elecraft? I don't recall any 1st and 2nd Mixer mods being published. If not, can you please share them? Are the software mods in the current beta FW, i.e. 3.30? Thanks. Chuck, AE4CW Alexander Ponomarenko-5 wrote: Today we finished our K3 IMD-test in our home-laboratory. :) We has the nice results I think. Same improvements we have after modifications in hardware (mods for 1st and 2nd Mixer, IF-buffer and AF-amplifier). Same improvements we have after excellent software AGC-mods from Lyle Johnson. And here is the nice result in total. 2-tone-IMD-Plot for K3/100F BEFORE mods: http://forum.cqham.ru/download.php?id=48688 here we can see very dirty and nonlinear signal Plot for K3/100F AFTER hardware mods: http://forum.cqham.ru/download.php?id=48689 more clean and linear signal Plot for K3/100F AFTER hardware mods AND new AGC: http://forum.cqham.ru/download.php?id=48677 and nice result in total. GL! 73! Alex UR5LAM __ 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/K3-2-tone-IMD-test-tp3715261p3722330.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] An interested link
Brett Gazdzinski wrote: N2DTS: I don't understand why some people like to limit other peoples activity, or choices. AB7E: So it's OK for me to hold a keg party on the street in front of your house late at night?It isn't about arbitrarily wanting to limit the activities of the wide-band ESSB folks ... it's about not wanting the activities of the wide-band ESSB folks to arbitrarily limit the number of hams who can enjoy themselves on the relatively narrow HF bands. N2DTS: It seems to me like there is very little important communication going on in ham radio, so why stress the narrow bandwidth? Would it block some critical or important communication? AB7E: There is relatively little important communication going on at all in ham radio, and that applies at least as much to the wide-band ESSB folks. How important is it to spend an hour critiquing that last 0.1 db of voice frequency response below 50 Hz? The issue isn't the importance of the content ... the issue is the right to reasonable opportunity to express it. N2DTS: Ham radio just seems like a bunch of people who enjoy fooling with radio equipment, so why not just let them fool with it? AB7E: While ESSB has endured scorn from mainstream hams for some time, it really wasn't too much of an issue while their experiments (and their splatter) were held to rather few frequencies that everyone else could generally manage to avoid. Now that ESSB has found a way to take up even more space with wide bandwidths and its practitioners are openly advocating operation anywhere on the HF bands, it has become a totally different issue. If your upwind neighbor enjoyed burning tires in his back yard, would you be inclined to just let him fool with it? N2DTS: There are other modes much narrower than ssb, why not not ban ssb as wasting spectrum? AB7E: There aren't any practical VOICE modes narrower than SSB. FCC regulations and common-use band plans try to provide room for everyone to enjoy the hobby without unduly infringing on others right to do the same. Wide-band ESSB is like insisting on wearing a big hat in a crowded movie. N2DTS: I am not fond of RTTY, or slow scan TV, or ssb, or many other things other hams do, but the last thing I would want to do is restrict something that others find enjoyable. AB7E: So why not open up the HF bands to wide-band FM? I have no problem at all with people using the K3 for clean ESSB when the band activity allows it. I do have a problem with people using ESSB on any rig when the bands are crowded, and I have a significant problem with people extending ESSB to ridiculous bandwidths like 6 KHz and beyond, and I have a huge problem with people generating splatter by pushing a rig that can't handle it to ESSB bandwidths. Dave AB7E __ 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 FSK power transients
I experience the same issue and Elecraft indicated that the FSK mark/space power fluctuations are caused by the transmit filter's passband ripple and where the transmit signal falls within the filter's passband. I'm using the standard 5 pole 2.7khz filter. They indicated the 8 pole filter should be flatter. I'm using a 2.8kHz 8-pole as the main transmit filter and at nominal 100W output I can see a perceptible wobble on the wattmeter as the signal shifts between mark and space. It's hard to believe the ripples in the filter would be so steep that a 170 Hz difference in frequency of the two tones would make much difference. If you use the standard 2125 Hz / 2295 Hz mark/space convention, this would make the signal appear fairly close to the filter's transition band, assuming there's no center frequency offset applied in the transmit path. This amplitude mismatch will introduce an unintentional AM at the baud rate, but it's probably not enough to appreciably broaden the transmitted signal. I don't have access to a spectrum analyzer or I would examine this further. Maybe someone with a well-instrumented bench can have a look and report back. 73... Randy, W8FN __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3: An interested link
Hey Brett, Congrats on a point-on and reasoned argument concerning ESSB. I get a kick out of some of the contest crowd implying that through limitations to others people's activity, everyone else's interests are secondary to theirs. Over my 30 years on the air, I've observed more rude, selfish and bandwidth-consuming behavior during contests than I have ever heard with any ESSB round table. As this thread is not related to elecraft topics and probably should not continuebut since it is, opinions need to be heard. 73 de N1LQ-Dave __ 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] 144 MHz Module
Can´t understand why we cant have access to the documentation for close inspection. The complete unit is promised to be delivered in half a month from now so the full basic documentation of the design ought be ready and available today! Jan, SM6TUW __ 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] 144 MHz Module
Jan, Could you understand that a major 'player' in finishing the documentation is also the designer who may be up to his 'eyeballs' trying to get it ready to go out the door in a couple weeks? 73, Don W3FPR SM6TUW wrote: Can´t understand why we cant have access to the documentation for close inspection. The complete unit is promised to be delivered in half a month from now so the full basic documentation of the design ought be ready and available today! Jan, SM6TUW __ 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] FW 3.30
K5WA wrote: You do not need to worry about having 3.30 on your K3. __ My K3 shipped with 3.25 about a month ago. I had one or two noise burst incidents and moved to 3.3 even though I had not intended to change FW unless it was a production release. No noise bursts with 3.3. Then I started to experiment with AGC SLP and THR. And I experienced a noise burst. The good news is that a power cycle puts you right back where you were in seconds. I changed the AGC SLP back to the default value of 12 and I have not had another noise burst. YMMV If you experience a noise burst, send the specifics to Lyle per his posting of Sept 7. 73 - Steve WB6RSE __ 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: An interested link
Of course ... that's what happens when you have literally thousands of enthusiastic participants scrambling for limited space on the band, most of whom are trying their best to fit into the smallest possible slice of it.So what part of that represents justification for taking up more bandwidth than is necessary to communicate? This isn't a contesting versus ESSB argument, though, or at least it wasn't until you flipped it in that direction. It's a question of efficient use of a scarce resource (bandwidth) on the HF bands. It's like camping ... when you're out in the middle of the woods ten miles from the nearest telephone pole, go ahead and crank up your boombox and rattle the leaves off the trees. When you're in a public campground 200 yards from the nearest Circle K, have the courtesy to use your earphones. Even with the K3, Elecraft tacitly acknowledges the risk of interference in ESSB mode when they state in the manual: Carrier and spurious signal suppression, passband shape, delay characteristics, fidelity, and other aspects of ESSB performance are not specified. Use ESSB only after carefully monitoring your signal. Dave AB7E David and Dianne on Comcast wrote: Over my 30 years on the air, I've observed more rude, selfish and bandwidth-consuming behavior during contests than I have ever heard with any ESSB round table. __ 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 FSK power transients
If you use the standard 2125 Hz / 2295 Hz mark/space convention, this would make the signal appear fairly close to the filter's transition band, assuming there's no center frequency offset applied in the transmit path. The roofing filter IS offset to put the RTTY tones (Data | Pitch) in the center of the filter. However, since the 5 pole filter has +/- 1 dB of ripple in the passband and the ALC is applied in DSP (not based on power output), it is possible to see 20 or 30 watts difference between the tones. 73, ... Joe, W4TV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Randy Farmer Sent: Sunday, September 27, 2009 4:33 PM To: Phil NA4M; elecraft@mailman.qth.net Subject: Re: [Elecraft] [K3] K3 FSK power transients I experience the same issue and Elecraft indicated that the FSK mark/space power fluctuations are caused by the transmit filter's passband ripple and where the transmit signal falls within the filter's passband. I'm using the standard 5 pole 2.7khz filter. They indicated the 8 pole filter should be flatter. I'm using a 2.8kHz 8-pole as the main transmit filter and at nominal 100W output I can see a perceptible wobble on the wattmeter as the signal shifts between mark and space. It's hard to believe the ripples in the filter would be so steep that a 170 Hz difference in frequency of the two tones would make much difference. If you use the standard 2125 Hz / 2295 Hz mark/space convention, this would make the signal appear fairly close to the filter's transition band, assuming there's no center frequency offset applied in the transmit path. This amplitude mismatch will introduce an unintentional AM at the baud rate, but it's probably not enough to appreciably broaden the transmitted signal. I don't have access to a spectrum analyzer or I would examine this further. Maybe someone with a well-instrumented bench can have a look and report back. 73... Randy, W8FN __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft 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 FSK power transients
The roofing filter IS offset to put the RTTY tones (Data | Pitch) in the center of the filter. Good to know. That's how I would have done it I were the designer. I'm surprised I can see a difference between the two tones through the flatter filter 8-pole filter. It's just enough to see on the 200W scale of an old (pretty much uncalibrated) Daiwa CN-520. 73... Randy, W8FN __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 Losing Time
Tune the radio to WWV so that you can synchronize the clock, and then leave the clock displayed and leave the rig tuned to WWV. Now, operate the ALT key over and over to switch back and forth between LSB and USB. After about twenty operations of ALT, note the K3's time compared to WWV's time. It looks like the CPU loses time the more the ALT key is used. It is easy to make the clock lose 5 seconds or more in just a couple of minutes of ALT. I don't know if there are other keys on the front panel that cause the clock to lose time. This is nit-picking, I know. Just an observation. Not a show-stopper. __ 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] Upcoming K3 features
Eric what everyone at Elecraft has done has been incredible to say the least. I would love to see these added features or upgrades to the K3. 1. I would like to see a squelch that works on SSB Voice and not be so sensitive in other modes. In other words sometimes I really have to play with it to get it just right (in other modes). On SSB it does not work well at all, IMHO. 2. Many of the people I know would like the AM Sync as soon as possible. 3. One of the best Short Wave radios for this day and time! 4. Kenwood makes/made a remote head that you could purchase as an accessory for the Kenwood TS-2000. This way you could put the K3 wherever and have a small remote head on you dash. The Kenwood connected via a CAT-5 (RJ-45 ?) phone jack. This would be so nice to have. A medium/large radio with a small remote head as an option. 5. For us who have purchased the K3 assembled it would be great if there was a manual that would show you how to take it back apart with pictures, labels, and all for servicing. Thanks Again For A Great Radio, Rick -- Serial Number 2834 Eric Swartz - WA6HHQ, Elecraft wrote: Wow! I go off-line for the weekend and everyone goes crazy. Must have been a slow news weekend, or just poor propagation on HF.. :-) I see there is a lot of misunderstanding out there on what is already here, or is coming soon, so I'd like to clarify a few items. 1. TX/RX EQ = OFF in digital modes will be implemented in within the next couple of releases. 2. RX active while manually tuning through memories will also be implemented shortly, within the next couple of releases. 3. AM Sync is actively being completed. We have an internal version in the test lab and we should have a beta version out soon. It turns out this was not a simple task. 4. The TCXO-1 actually turns out to meet 0.5 ppm over the commercial temp range. We were over conservative in our initial public specs on this item - It already met this without additional calibration. We are also testing a future version of K3Utility that lets you enter temp correction values for a further increase in accuracy, but I'm not sure how quickly this will be released. As a general comment, we have a very specific prioritized list of items that we are working on for the K3. some we've talked about, some we haven't. And some are internal items to improve manufacturing yield, etc. We certainly do pay attention to the list comments and requests, but we do not jump back and forth each week trying to meet new requests at the expense of others. Some times it conveniently works out that we are already about to implement something requested on the email list, or that it is trivial to add quickly. That's why you might see it pop up shortly after a list discussion. Also, while it may seem like we have not responded to your specific request, it does not mean we have ignored it. We get so many varied requests that there is no way to satisfy all of them, but we do write them down and we periodically meet and re-prioritize those items that are doable. Wayne and I both feel strongly that a lot of our success is due to our company's responsiveness to your product ideas and requests. We see our major products, like the K3, as a continually evolving and improving in response to customer feedback. We're constantly amazed at the breadth of applications that you are using the K3 for. From Rag Chewing, DXing, QRP, Contesting, SO2R, Moon-bounce and Data modes to ESSB, each user community has a wide range of uses and requests. We can't do everything, but we do make careful attempts to add the most useful requested features over time. We'll never meet everything requested - there just isn't that much development time or microprocessor memory available. But we'll strive to make the K3 as good as it can be. Its impossible for us to guess the many ways our products, like the K3, will get used up front, so we make our best effort to get a good core set of features into the product at initial release, and then we iterate and improve in response to your feedback over the life of the product. We hope that approach keeps our products fresh and fun to use over their life, and that it keeps us ahead of our competition :-) 73, Eric WA6HHQ . __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- View this message in context: http://n2.nabble.com/Upcoming-K3-features-tp3690118p3725333.html Sent from the [K3] mailing list archive at Nabble.com. __ Elecraft mailing list Home:
Re: [Elecraft] [K3] Upcoming K3 features
The official K3 Assembly Manual is available as a pdf download from Elecraft's web site. Why wouldn't that work? 73, Dave AB7E Richard Jones wrote: 5. For us who have purchased the K3 assembled it would be great if there was a manual that would show you how to take it back apart with pictures, labels, and all for servicing. __ 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] Upcoming K3 features
Hey Dave, I guess the Assembly Manual would be a place to look/start. Is what I am talking about is a Manual that does not have all the other stuff in it. For example if you need to get to a certain Board it would be nice if there was a Manual that showed you how to do it. Please do not take this in the wrong way! I am sure the Assembly Manual has more information than I could probably comprehend, just to get to a certain part of the radio. For many of us, we purchased the Assembled K3 because for whatever reason we did not or could not Assemble the radio. This is why I am making this request. Again, please do not take this in a negative way, that was not my intention in posting. Thanks, Rick David Gilbert wrote: The official K3 Assembly Manual is available as a pdf download from Elecraft's web site. Why wouldn't that work? 73, Dave AB7E Richard Jones wrote: 5. For us who have purchased the K3 assembled it would be great if there was a manual that would show you how to take it back apart with pictures, labels, and all for servicing. __ 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/Upcoming-K3-features-tp3690118p3726252.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] [K3] Upcoming K3 features
Rick, So far when I've had to get into the K3 for options mods, the instructions that came with the option or mod explained very carefully and clearly how to get into the specific area of the K3. Mark On Sun, Sep 27, 2009 at 10:03 PM, Richard Jones r...@prismnet.com wrote: Hey Dave, I guess the Assembly Manual would be a place to look/start. Is what I am talking about is a Manual that does not have all the other stuff in it. For example if you need to get to a certain Board it would be nice if there was a Manual that showed you how to do it. Please do not take this in the wrong way! I am sure the Assembly Manual has more information than I could probably comprehend, just to get to a certain part of the radio. For many of us, we purchased the Assembled K3 because for whatever reason we did not or could not Assemble the radio. This is why I am making this request. Again, please do not take this in a negative way, that was not my intention in posting. Thanks, Rick __ 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] Upcoming K3 features
I understand. I just thought that maybe you didn't notice the assembly manual was there. For the most part, though, following the assembly manual backwards probably is the safest bet. It gives step-by-step instructions, complete with cautionary advice you'd be wise to follow anyway. It's pretty much organized by sections and it wouldn't take much scanning through it to figure out which were relevant to whatever you wanted to do. 73, Dave AB7E Richard Jones wrote: Hey Dave, I guess the Assembly Manual would be a place to look/start. Is what I am talking about is a Manual that does not have all the other stuff in it. For example if you need to get to a certain Board it would be nice if there was a Manual that showed you how to do it. Please do not take this in the wrong way! I am sure the Assembly Manual has more information than I could probably comprehend, just to get to a certain part of the radio. For many of us, we purchased the Assembled K3 because for whatever reason we did not or could not Assemble the radio. This is why I am making this request. Again, please do not take this in a negative way, that was not my intention in posting. Thanks, Rick David Gilbert wrote: The official K3 Assembly Manual is available as a pdf download from Elecraft's web site. Why wouldn't that work? 73, Dave AB7E Richard Jones wrote: 5. For us who have purchased the K3 assembled it would be great if there was a manual that would show you how to take it back apart with pictures, labels, and all for servicing. __ 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] Elecraft SSB Net results (9-27-09)
We kept our frequency on 14.314 MHz again today to try to dodge some QRM that has been persistent on 14.316 for some people. We had 14 participants including net control and ran for 14 minutes. The discussions were about difficulty getting stereo out of the headphones for one station and help with mic setup for a Heil HM10 for another. Station NameQTH Rig S/N W0OGH Larry AZ K3 763 NZ0TBillKS K3 1502 AB1KC Bruce RI K3 2674 W2RWA DickNY K3 2603 KA0NCR Arnie NE K3 185 K4SOMarkVA K3 2861 K1LCBud MA K3 788 KC4RN Gerald NJ K3 528 K0JWC Jim MN K3 3447 AI4VZ George GA K3 2412 W8YMO Harry OH K3 166 W8OVDaveTX K3 3139 AE6IC FredCA K3 2241 NS7PPhilOR K3 1826 Thanks to everybody who checked in. Have a good week. 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 (9-27-09)
The QRM on 14.316 is unlikely to go away, ever. This is the 4th harmonic of 3.579 MHz, the TV color burst frequency, and a popular choice for oscillators in all sorts of consumer and office devices (not necessarily TV receivers). This has been a problem on 20 meters for at least 30 years that I know of, perhaps longer. Also, because many devices that use this frequency derive it from a square-wave oscillator (a couple of gates). the harmonics of these devices are often prodigious. Another considerations is that because some designs need to have this frequency only approximately correct, it is no surprise to find some units running up to a few hundred Hertz plus or minus from 3.579, and thus (after multiplication by harmonics) hams end up with a broad band of QRM that can be 2 or 3 kHz from 14.316, or anywhere in between. Are all these sources illegal, and thus covered by part 15 rules? Yes, they are. This is part of what manufacturers certify on those Part 15 labels you see on so many items of consumer electronics. Technically, the owner of the device is at fault, and could be made to cease and desist using the offending item. However, then we have the real world. Identifying, finding and fixing what could be several dozen such sources in your immediate vicinity can be and for practical purposes is an unsurmountable problem. The FCC literally cannot help you here, as much as they might want to. They have neither the budget or time to solve literally tens or even hundreds of millions (no exaggeration here!) of these cases. Pandora is well and truly out of the box on this one. I would respectfully suggest a permanent change of net frequency to something less likely to have this problem. - Jim, KL7CC Phil and Christina wrote: We kept our frequency on 14.314 MHz again today to try to dodge some QRM that has been persistent on 14.316 for some people. __ 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
