Re: [Elecraft] K3 Synthesizer, KSYN3A
The Boatanchor AM guys are going to be on the air making Qs; the rest of us will be waiting for parts. ;-) Wes N7WS On 7/16/2022 8:07 AM, Geert Jan de Groot wrote: On 15/07/2022 18:48, elecraft-requ...@mailman.qth.net wrote: I have a K3 with the original synthesizer boards. I am looking for a pair of the new KSYN3A boards. I have spoken to Elecraft tech support and I am on their list in case they decide to make a run of new synthesizer boards. The KSYN3A design is based on microcontrollers from Microchip. I've ordered some controllers at Microchip myself (of a type that is much more common than the ones used in KSYN3A) and today I received the 5th "your ship datum has changed" notice. Note, we're talking delivery in 3Q2023, but the next notification will be 4Q2023; my first delivery notice was for June 2023. And my order is small. The market is still absolutely bonkers. At QRL, I know about at least a dozen re-design efforts to change designs to make meet the semiconductors that we still can get. Wayne reported similar difficulties in his status report three months ago. And it doesn't make sense to keep reporting "it is going to come..." because the ship dates keep shifting and part delivery promises, even contractual, keep changing. The industry expects things to quieten down a bit next year, but we'll still need to catch up the backlog. I fully understand Wayne not reporting any ship dates. I would report only if I have all parts on my desk, for all parts needed in the design. Even mundane things like connectors (DC connectors) now yield delivery time of more than a year out. So it goes, Geert Jan __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 Synthesizer, KSYN3A
On 15/07/2022 18:48, elecraft-requ...@mailman.qth.net wrote: I have a K3 with the original synthesizer boards. I am looking for a pair of the new KSYN3A boards. I have spoken to Elecraft tech support and I am on their list in case they decide to make a run of new synthesizer boards. The KSYN3A design is based on microcontrollers from Microchip. I've ordered some controllers at Microchip myself (of a type that is much more common than the ones used in KSYN3A) and today I received the 5th "your ship datum has changed" notice. Note, we're talking delivery in 3Q2023, but the next notification will be 4Q2023; my first delivery notice was for June 2023. And my order is small. The market is still absolutely bonkers. At QRL, I know about at least a dozen re-design efforts to change designs to make meet the semiconductors that we still can get. Wayne reported similar difficulties in his status report three months ago. And it doesn't make sense to keep reporting "it is going to come..." because the ship dates keep shifting and part delivery promises, even contractual, keep changing. The industry expects things to quieten down a bit next year, but we'll still need to catch up the backlog. I fully understand Wayne not reporting any ship dates. I would report only if I have all parts on my desk, for all parts needed in the design. Even mundane things like connectors (DC connectors) now yield delivery time of more than a year out. So it goes, Geert Jan __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 with KSYN3A 100Hz spurious
I need to apologise to the group and to my old K3... the problem wasn’t the K3 after all. It turned out to be my Icom IC-7300 displaying an S9 carrier from the K3 as having 100Hz sidebands and also producing a loud buzz from the speaker. Feeding the 7300 with an S9 level from a signal generator showed the problem was with the Icom. I have no idea what caused the problem which was present before a firmware upgrade, and after upgrading to version 1.40. Doing a full reset of the 7300 cured the problem. 73 Dave G4AON -- Sent from my iPhone SE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 with KSYN3A 100Hz spurious
Hi Dave, Still have those old synthesizers laying around. I would start there and putt the old ones back in. That will also force you to disconnect and reconnect those infamous TMP coax connections. It is a place to start while Elecraft works you through the cue. 73, Bill-AK5X, K3 SN 00069 > On Mar 1, 2021, at 2:20 PM, Dave wrote: > > My old K3 (serial #80) with dual RX and KSYN3A upgrade synths, has > developed a fault. > > A “tune up” carrier, CW transmission, AM transmission, all exhibit 100Hz > “modulation” with spurious carriers every 100Hz each side of the centre > frequency. They start around 10dB down and drop off in a similar manner to > SSB IMD products. Receive sounds fine. > > The issue is not always present when the K3 is cold, it is not related to > external connections (removed all except power), nor to a power supply > (swapped it and the power lead). It is also present on low power and on all > bands. > > I’ve asked Elecraft Support, no reply so far. Any ideas as to what might be > the problem? > > Thanks > Dave G4AON > -- > Sent from my iPhone SE > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto: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 a...@me.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 arch...@mail-archive.com
Re: [Elecraft] K3 with KSYN3A 100Hz spurious
At one time my old K3 with 2nd RX had a 20KHz+ wide signal on 80m, which generated lots of "attention" since there were two dxpeditions close by and some blamed me for not getting ATNO. Got a "nice" screenshot from a Flex. Receive was OK. I asked the Elecraft support for some ideas and there was not a clear answer. I tested the radio afterwards with an SDR. The bandwidth was getting smaller and then everything was normal. Not sure what has happened. It must have been the transmit path somehow influencing the synthesizer (KSYN3). Ignacy NO9E -- Sent from: http://elecraft.365791.n2.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 arch...@mail-archive.com
[Elecraft] K3 with KSYN3A 100Hz spurious
My old K3 (serial #80) with dual RX and KSYN3A upgrade synths, has developed a fault. A “tune up” carrier, CW transmission, AM transmission, all exhibit 100Hz “modulation” with spurious carriers every 100Hz each side of the centre frequency. They start around 10dB down and drop off in a similar manner to SSB IMD products. Receive sounds fine. The issue is not always present when the K3 is cold, it is not related to external connections (removed all except power), nor to a power supply (swapped it and the power lead). It is also present on low power and on all bands. I’ve asked Elecraft Support, no reply so far. Any ideas as to what might be the problem? Thanks Dave G4AON -- Sent from my iPhone SE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 in FD
My local club decided to call off their FD plans, due to the bad WX in our area. They were going to use a new site, which is located on elevated ground... normally a good thing. But the possibility of lightning was in the forecast, so perhaps discretion was the better call. So, I set up with my KX3 and an AlexLoop, and made a few dozen contacts. I had some family obligations over the weekend, so I didn't spend too much time on the air. Nevertheless, the KX3 made a fine showing. I have a suspicion that quite a few of the stations I worked were using K3s. I say that because those were stations that were running, and when I would zero beat their frequency, I'd usually have them respond to my -single- call. We wrap up the QSO in fifteen seconds of so. Took me more time to make the log entry than the QSO. :) That tells me that the other guys had no problems fending off QRM, especially at multiple transmitter sites. I worked only CW on 40 and 20, with the KX3 at 5 watts. The KX3 made a fine showing. It seemed almost too easy. 73 de Ray K2ULR KX3 #211 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K3 and KSYN3A in FD
Had the opportunity to operate two, different K3 transceivers, both with the new KSYN3A boards, during FD. A few CW observations: 1. The only way I became aware of a station moving close to me was when my rate dropped. A glance at the P3, or opening up the receiver bandwidth, always revealed that somebody loud had moved in really close. Since not everyone has K3 . . . my rate fell in what was QRM for other receivers. 2. The bands seemed really big. I was always able to quickly find a run frequency when moving from another band or mode. 3. In spite of rainstorms for about 23 hours of FD, the bands seemed quiet and lightning crackles were quite subdued. I'm sure that these observations are routine for experienced K3 users. For somebody who is still trying to decide, or is still feeding the piggy bank, the K3 has one H3LL of a receiver--especially when equipped with the KSYN3A board. 73, K3YD __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 in FD
We (Sussex County ARC W2LV) in NW NJ ran a 5A operation and had a couple of K3's on hand. We thought conditions were flat on Saturday but a little better on Sunday. We were well protected under a large circus tent with perimeter tarps from the wind and the rain. The cold (low 50's) was the biggest issue. The K3's ran perfect but the foot switches weren't happy. 73, John N2HMM -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Dave Olean Sent: Monday, June 29, 2015 7:58 PM To: Blair Bates; elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 and KSYN3A in FD I used a K3 with the new synthesizer and it workerd great, but with just five watts QRP on battery power, I found condx were pretty bad. The nor'easter that blew into northern New England did not help. We had high winds buffeting the tent and a pretty substantial river developed right under the operating table. Apparently things were not so bad farther south, but propagation seemed depressed here. Did anyone else think propagation was down? Lots of QSB and watery signals. Maybe our wire antenna was NG, but I doubt it. We had three half waves on 20 M fed with open wire. There was plenty of room between other signals on all the bands. The K3 worked flawlessly. Dave K1WHS - Original Message - From: Blair Bates blairba...@gmail.com To: elecraft@mailman.qth.net Sent: Monday, June 29, 2015 8:22 PM Subject: [Elecraft] K3 and KSYN3A in FD Had the opportunity to operate two, different K3 transceivers, both with the new KSYN3A boards, during FD. A few CW observations: 1. The only way I became aware of a station moving close to me was when my rate dropped. A glance at the P3, or opening up the receiver bandwidth, always revealed that somebody loud had moved in really close. Since not everyone has K3 . . . my rate fell in what was QRM for other receivers. 2. The bands seemed really big. I was always able to quickly find a run frequency when moving from another band or mode. 3. In spite of rainstorms for about 23 hours of FD, the bands seemed quiet and lightning crackles were quite subdued. I'm sure that these observations are routine for experienced K3 users. For somebody who is still trying to decide, or is still feeding the piggy bank, the K3 has one H3LL of a receiver--especially when equipped with the KSYN3A board. 73, K3YD __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 u1004...@warwick.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 arch...@mail-archive.com
Re: [Elecraft] K3 and KSYN3A in FD
I had almost the exact same experience. A lot of times I have to remind myself that the K3 is so good, I need to give more room in the normal passband because I can't hear strong guys right next to me. I have an Afedri SDR on my IF for my PAN, and I see that a lot. Joe AB5OR From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Blair Bates Sent: Monday, June 29, 2015 3:23 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K3 and KSYN3A in FD Had the opportunity to operate two, different K3 transceivers, both with the new KSYN3A boards, during FD. A few CW observations: 1. The only way I became aware of a station moving close to me was when my rate dropped. A glance at the P3, or opening up the receiver bandwidth, always revealed that somebody loud had moved in really close. Since not everyone has K3 . . . my rate fell in what was QRM for other receivers. 2. The bands seemed really big. I was always able to quickly find a run frequency when moving from another band or mode. 3. In spite of rainstorms for about 23 hours of FD, the bands seemed quiet and lightning crackles were quite subdued. I'm sure that these observations are routine for experienced K3 users. For somebody who is still trying to decide, or is still feeding the piggy bank, the K3 has one H3LL of a receiver--especially when equipped with the KSYN3A board. 73, K3YD __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 j...@selectconnect.netmailto:j...@selectconnect.net Total Control Panel Loginhttps://asp.reflexion.net/login?domain=selectconnect.net To: j...@selectconnect.nethttps://asp.reflexion.net/address-properties?aID=750607761domain=selectconnect.net From: elecraft-boun...@mailman.qth.nethttps://asp.reflexion.net/address-properties?aID=11662279409domain=selectconnect.net Message Score: 1 High (60): Pass My Spam Blocking Level: Medium Medium (75): Pass Low (90): Pass Blockhttps://asp.reflexion.net/FooterAction?ver=2bl-sender-address=1rID=750607761aID=11662279409domain=selectconnect.net this sender / Blockhttps://asp.reflexion.net/FooterAction?ver=2ent=1bl-sender-address=1rID=750607761aID=11662279409domain=selectconnect.net this sender enterprise-wide Blockhttps://asp.reflexion.net/FooterAction?ver=2bl-sender-domain=1rID=750607761aID=11662279409domain=selectconnect.net mailman.qth.net / Blockhttps://asp.reflexion.net/FooterAction?ver=2ent=1bl-sender-domain=1rID=750607761aID=11662279409domain=selectconnect.net mailman.qth.net enterprise-wide This message was delivered because the content filter score did not exceed your filter level. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 in FD
I used a K3 with the new synthesizer and it workerd great, but with just five watts QRP on battery power, I found condx were pretty bad. The nor'easter that blew into northern New England did not help. We had high winds buffeting the tent and a pretty substantial river developed right under the operating table. Apparently things were not so bad farther south, but propagation seemed depressed here. Did anyone else think propagation was down? Lots of QSB and watery signals. Maybe our wire antenna was NG, but I doubt it. We had three half waves on 20 M fed with open wire. There was plenty of room between other signals on all the bands. The K3 worked flawlessly. Dave K1WHS - Original Message - From: Blair Bates blairba...@gmail.com To: elecraft@mailman.qth.net Sent: Monday, June 29, 2015 8:22 PM Subject: [Elecraft] K3 and KSYN3A in FD Had the opportunity to operate two, different K3 transceivers, both with the new KSYN3A boards, during FD. A few CW observations: 1. The only way I became aware of a station moving close to me was when my rate dropped. A glance at the P3, or opening up the receiver bandwidth, always revealed that somebody loud had moved in really close. Since not everyone has K3 . . . my rate fell in what was QRM for other receivers. 2. The bands seemed really big. I was always able to quickly find a run frequency when moving from another band or mode. 3. In spite of rainstorms for about 23 hours of FD, the bands seemed quiet and lightning crackles were quite subdued. I'm sure that these observations are routine for experienced K3 users. For somebody who is still trying to decide, or is still feeding the piggy bank, the K3 has one H3LL of a receiver--especially when equipped with the KSYN3A board. 73, K3YD __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 arch...@mail-archive.com
Re: [Elecraft] K3 and KSYN3A in FD
__ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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
Looked at the sm5bsz pdf showing the K3 at -128 db at 100khz on phase noise 100khz to 200khz likely to be popular same band operation of K3's at your local Field Day however Looking at the published Jan 2009 QST, I read -148db at 100khz separation - aka the pdf is a bit off Reviewing the ARRL phase noise graphs shows K3 is not just better but superior to other rigs in Noise NOT produced at 100khz spacing . this is from Figure 3 in the K3/100 writeup in Jan 2009 QST somewhat long process to go look all reviews up and note at 100khz (gave presentation to club on this) ARRL says the graph is -dBc referenced, Checked a few other rigs listed in pdf, doesn't match ARRL graphs for composite-noise test in the report the conclusion is same but Might want to report what ARRL graph shows at 100khz spacing 73 Robert W5AJ -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Fausto Coletti Sent: Thursday, May 28, 2015 9:00 AM To: Dave Olean; elecraft@mailman.qth.net Subject: 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
[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 arch...@mail-archive.com
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 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
