[Elecraft] N1MM CW issue
Hi all, I noticed a problem with N1MM + in CW. When I select a speed higher than 28-30wpm, the weighing between points and lines changes and, at 40wpm the transmitted message becomes incomprehensible. Any suggestions? 73, Fausto IK4NMF __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] Test, do not read
Test __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] Test do not read
Test __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3: 630m amplifiers
Hi Alan, In fact, the spectrogram that I posted shows strong key clicks of Class D amplifier on the signal to 472.1 kHz. Also the linear amplifier at 472.5 KHz in the spectrogram shows key clicks but lower. On the other hand you can see that my signal at 473.3 is very clean without key clicks. Many hams have asked me how it is possible that with a switching amplifier there are no key clicks. The answer is that I have taken a different approach by the schemes that are on web and the result you can see yourself. It is very important to dampen all transients during switching from interdiction to conduction and vice versa. I had to work a lot but at the end I got a very clean TX. 73, Fausto IK4NMF - Original Message - From: Alan n...@sonic.net To: Fausto Coletti faustocole...@alice.it Sent: Monday, July 27, 2015 5:21 PM Subject: Re: [Elecraft] K3: 630m amplifiers Hi Fausto, The term class D can mean many different things. As long as a class-D amplifier uses some means to preserve the modulation envelope (the shape of the amplitude) then it would work fine for CW. But if the input CW signal is hard-limited then the wave shaping will be lost and key clicks will result. It's not an issue for FSK digital modes, because the amplitude is constant, so hard-limiting has no effect. But CW is actually a form of amplitude modulation so it needs a linear amplifier. 73, Alan N1AL On 07/27/2015 12:30 AM, Fausto Coletti wrote: It depends on how you made the amplifier. I produce some models of amplifiers, of different powers, all in switching operation. Attached an image of the DK7FC grabber, you can see at 472.1 KHz the spectrogram of a German station that use a class D amplifier, at 472.5 an Italian station that use a 400W tube linear amplifier and at 473.3 there is my signal with my QRO+ switching PA. I can assure that I often find local stations operating at 250-300 Hz from my frequency that are not minimally disturbed I do not think that a linear amplifier is so better. I also made a 100W output amplifier specifically designed for the K3. This amplifier runs at 12 volt. All my PA need an input signal (adjustable) from -10dBm to + 20 dBm 73, Fausto IK4NMF - Original Message - From: Alan n...@sonic.net To: elecraft@mailman.qth.net Sent: Monday, July 27, 2015 6:32 AM Subject: Re: [Elecraft] K3: 630m amplifiers CW would be another mode that would not need a linear amp I think. No, CW requires a linear amplifier. CW is not constant-amplitude - the amplitude changes every time you open or close the key. A class-C amplifier would mess up the key shaping, causing key clicks. Any true FSK or MSK signal should not be bothered by a non-linear amplifier. The only caveat I can think of is that the amplitude of an AFSK signal may have some ripple on it to the extent that the passband of the transmit crystal filter is not flat. But I doubt that's a significant issue. Alan N1AL - Nessun virus nel messaggio. Controllato da AVG - www.avg.com Versione: 2015.0.6081 / Database dei virus: 4392/10316 - Data di rilascio: 27/07/2015 __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3: 630m amplifiers
It depends on how you made the amplifier. I produce some models of amplifiers, of different powers, all in switching operation. Here an image of the DK7FC grabber, you can see at 472.1 KHz the spectrogram of a German station that use a class D amplifier, at 472.5 an Italian station that use a 400W tube linear amplifier and at 473.3 there is my signal with my QRO+ switching PA. https://www.dropbox.com/s/oziocm3vshfftgl/19012015.JPG?dl=0 I can assure that I often find local stations operating at 250-300 Hz from my frequency that are not minimally disturbed I do not think that a linear amplifier is so better. I also made a 100W output amplifier specifically designed for the K3. This amplifier runs at 12 volt. All my PA need an input signal (adjustable) from -10dBm to + 20 dBm https://www.dropbox.com/s/u2yjp0ltv0kbsy5/K3%20and%20Pa.jpg?dl=0 73, Fausto IK4NMF __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 and KSYN3A
Hi Dave, Here you can read an example of the problem that you mentioned: http://www.sm5bsz.com/dynrange/dubus313.pdf Unfortunately, there are many poor quality radio on the market. 73, Fausto IK4NMF - Original Message - From: Dave Olean k1...@metrocast.net To: bozidar bozida...@yahoo.de; elecraft@mailman.qth.net Sent: Thursday, May 28, 2015 3:40 PM Subject: Re: [Elecraft] K3 and KSYN3A I tried the same thing on the bench with an old K3 with original synth boards (no stiffeners) that I was upgrading. The new synth boards went in just fine and I inserted a test signal at 28.0150 at 0dBm, 1 milliwatt. I then tuned 1 kHz away and watched the noise floor drop to S1, so that I could hear a -130 dBm signal just fine only 1 kHz away at 28.0161. I also had the 400 Hz 8 pole filter engaged, but my eyes bugged out at the performance. If there was any reciprical mixing, the band would have been filled with broadband noise. I used to use the old Kenwood radios back in the 80's (TS-820S and TS-830) They had all sorts of LO noise and croaked badly with about an 80 dB range as I recall. A strong signal would fill up the band for over 100 kHz either side with reciprical mixing noise. I am seeing a radio that is about 50 dB better than that. I replaced the Kenwoods with Ten Tec OMNI Vs and saw a huge improvement, but nothing like what I am seeing with the new K3 synthesizer. Receivers can be so good now that the real problem is transmitted junk from other radios and not front end deficiencies in your radio. Dave K1WHS - Original Message - From: bozidar bozida...@yahoo.de To: elecraft@mailman.qth.net Sent: Thursday, May 28, 2015 12:15 PM Subject: [Elecraft] K3 and KSYN3A Hi, just done some tests with K3 and KSYN3A and result are amazing, (it is not a scientific test in Sherwood stile, but say enough): it is a P3 schreenshot as proof of incredible strong signal handling of K3 with new KSYN3A board: /P3 freq. span is 5 kHz, red band is signal 59+60dB, centered on 7.134 MHz, K3 is on SSB mode, filter BW2.4kHz center weighted (normalized - green band) - on 7.134 MHz, in filter BW is SSB signal clearly and laud herd./ This all, remind me on video from IC7851 vs IC7800 RMDR characteristics, with strong signal and week one ,300 Hz offset( search for Icom IC-7851 vs IC-7800 RMDR Characteristics on YouTube) Comments encouraged!!! 73 de S50BN http://elecraft.365791.n2.nabble.com/file/n7603576/P3_screenshot.bmp -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-and-KSYN3A-tp7603576.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 Message delivered to k1...@metrocast.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to faustocole...@alice.it - Nessun virus nel messaggio. Controllato da AVG - www.avg.com Versione: 2015.0.5941 / Database dei virus: 4354/9885 - Data di rilascio: 28/05/2015 __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Feature request - Disable Break In on K3
Hi Mike, push for two second the VOX button (left side of band switch) will disable break in. Vy 73, Fausto IK4NMF - Original Message - From: AD6XY willis...@gmail.com To: elecraft@mailman.qth.net Sent: Tuesday, August 27, 2013 10:08 PM Subject: [Elecraft] Feature request - Disable Break In on K3 Please can we have an option to disable break in. I nearly killed my microwave transverter tonight because of break in when I pressed the memory key button by mistake. CW QSK is too fast for and defeats the sequencing of the transverter. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Feature-request-Disable-Break-In-on-K3-tp7578303.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 - Nessun virus nel messaggio. Controllato da AVG - www.avg.com Versione: 2013.0.3392 / Database dei virus: 3211/6613 - Data di rilascio: 27/08/2013 __ 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] K144xv power output
Hi all, I should reduce the output power of the K144XV to a level of less than 1 Watt. I need this because I use the 144 MHz band to drive my microwave transverter. I tried to adjust the parameter config XV1 PWR to the value L .01 but the output power does not drop below 3 W. Then I thought of two possible solutions: 1) insert an attenuator on the cable IF IN of the K144XV 2)try adjusting the trimmer R87 on the K144XV Which is the best solution? 73, Fausto IK4NMF __ 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] K144XV
Today I installed the module K144XV. It all works ok but I noticed several spurious signals received, in particular each 12.5 kHz at a level of around -140 dbm indicated on P3, plus some pretty strong signals such as at 144.4165 to S7 and others. Obviously signals are present with the antenna disconnected and with a 50 Ohm load on the antenna connector. I exclude the origin from the outside of the transceiver, I disconnected all possible noise sources such as switching power supplies and similar. It 's normal or there may be a problem? Any suggestions? Fausto IK4NMF __ 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] K144XV
Thank you for answer, The spurious signals are not only visible on P3 but perfectly audible in the speaker. I have also tried turning P3 off and unplug it but the signals are always present and audible. Fausto IK4NMF - Original Message - From: Tom H Childers n...@n5ge.com To: Fausto Coletti faustocole...@alice.it Cc: 'Elecraft Mailing List' elecraft@mailman.qth.net Sent: Saturday, May 18, 2013 7:31 PM Subject: Re: [Elecraft] K144XV That sounds like a P3 cable problem. There have been reports of faulty BNC cables supplied in a batch that was bad from the supplier. Try contacting Elecraft and describe the problem to them. Also while you are waiting to call Elecraft over the week-end, make sure that ALL of the cable routing is as it was before the installation. That covers any existing cables you may have moved around. Good luck, 73, Tom Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member On Sat, 18 May 2013 18:41:53 +0200, Fausto Coletti faustocole...@alice.it wrote: Today I installed the module K144XV. It all works ok but I noticed several spurious signals received, in particular each 12.5 kHz at a level of around -140 dbm indicated on P3, plus some pretty strong signals such as at 144.4165 to S7 and others. Obviously signals are present with the antenna disconnected and with a 50 Ohm load on the antenna connector. I exclude the origin from the outside of the transceiver, I disconnected all possible noise sources such as switching power supplies and similar. It 's normal or there may be a problem? Any suggestions? Fausto IK4NMF __ 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, Tom Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member - Nessun virus nel messaggio. Controllato da AVG - www.avg.com Versione: 2013.0.3336 / Database dei virus: 3162/6335 - Data di rilascio: 18/05/2013 __ 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] Digital Audio File
I spoke of audio data files in digital format, not of the analog audio :-) 73, Fausto IK4NMF - Original Message - From: Rick Prather k6limae...@gmail.com Cc: Elecraft@mailman.qth.net Sent: Saturday, February 18, 2012 11:06 PM Subject: Re: [Elecraft] Digital Audio File You could play it into your computer and record it there. Rick K6LE __ 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] Digital Audio File
There is a way to download the audio file stored in the memory of the K3? 73, Fausto IK4NMF __ 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 question for Wayne
Hello, I'm Fausto IK4NMF, owner of K3 # 5826 and P3 # 1612. It would be possible to have a marker on the P3 corresponding to the frequency of the notch? This would make more rapid the notch adjustment. 73, Fausto IK4NMF __ 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 question for Wayne
Hello, I'm Fausto IK4NMF, owner of K3 # 5826 and P3 # 1612. It would be possible to have a marker on the P3 corresponding to the frequency of the notch? This would make more rapid the notch adjustment. 73, Fausto IK4NMF __ 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 preamp sufficient for K9AY?
Try unplugging and replugging the antenna from the receiver, if you notice an increase in noise you do not need to further amplify the signal. A further amplification worsens the dynamic of the receiver. Only if you're lucky and live in a little noisy QTH you need a preamplifier at K9AY antenna or if you have a high lossy coax between the antenna and the receiver. 73, Fausto IK4NMF - Original Message - From: Jim Miller j...@jtmiller.com To: Elecraft Reflector elecraft@mailman.qth.net Sent: Friday, November 18, 2011 2:29 AM Subject: [Elecraft] [K3] K3 preamp sufficient for K9AY? I'm considering adding a K9AY antenna for 160m and 80m. For those of you who are using one with the K3 do you find the K3 preamp sufficient or is another preamp required? My K9AY would be no more than 100ft of coax away so I wouldn't expect a lot of additional loss. Thanks Jim ab3cv __ 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 - Nessun virus nel messaggio. Controllato da AVG - www.avg.com Versione: 2012.0.1872 / Database dei virus: 2092/4626 - Data di rilascio: 19/11/2011 __ 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
