[Elecraft] Parts availability
Hello, I am looking for E620021 and E620044 parts to make voltage and frequency probes. Does anyone know where I can buy them from a third-party supplier? Are they available from Elecraft? Many thanks, Chris KM1B __ 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] Origin of Signal-Fine Structures in SSB Pass Band Waterfall, mainly 80/40m
to be off for a minute or two to allow the pressurized system to relax before power is again applied. Also note that some digital devices like internet routers may take 2 minutes or so to become fully operational after power is again applied. RFI is a difficult problem to diagnose, and it seems to me that it is receiving very little attention from regulators. Cheap appliances are popular and convenient but some may have bad effects on our spectrum. Cutting corners in design affects spectrum users, and having dozens of devices in every home adds up... 73, Chris K0PF On 1/6/2024 6:33 AM, Andy via Elecraft wrote: I have a general question to better understand analysis of SSB ( RX Pass Band) signals displayed as waterfall, mainly on RX of night time/evening low bands (80m/40m) propagation. (Sorry up to now no waterfall screenshots available yet. Anomality is only sometimes occurring, but not very short lived. Waterfall: The horizontal axis is frequency , the vertical axis is time and the brightness corresponds to signal amplitude received via any propagation mode (Skywave/NVIS/Groundwave, or mixtures) Modulation/ splatter become visible. The propagation effect I try to understand does not always occur. It is a "specially (modulated) signal pattern" , a vertical waterfall signal fine structure with periodic signal amplitude (brightness) minima and maxima lines. These lines are sometimes in SSB just straight down vertically with ca. 300 to ca. 400 Hz intervals (6 periods) . Digital signals seem to have more lines in RX Pass Band on the waterfall. Sometimes in the RX Pass Band these minima/maxima (QSB) lines are shifted right ( QRG >) Or at later observation times also may be left shifted (QRG<). I can rule out EMI of broad/narrow band nature. It must be due to propagation of the very observed signal Sometimes signature appears as " distributed cloud islands" in the vertical SSB PB waterfall band I observe for TX SSB Mode (e.g., 2.7kHz BW) in the RX waterfall display : 1. About 6 Periodic, straight vertical lines (periodic signal amplitude minima, which are darker), --normal propagation 2. About 6 Periodic, right shifted ( staring low f to higher f) vertical lines (signal amplitude minima) , --special propagation mode? 3. About 6 Periodic right shifted ( staring high f to lower f) vertical lines (signal amplitude minima) , -- special propagation mode? 4. The angle to the vertical axis seems to change often over time. Probably according to HF Condx/Propagation? 5. It seems to be independent of TX LSB or USB mode. 6. Digital signals have often more vertical lines 7. The angle to the vertical axis seems to change often over time, according to HF Condx/Propagation. 8. I have observed this effect also on day on 80m night time on a KIWI SDR only 12km away in hilly HB9 ( combination of NVIS/ groundwave?) Questions: 1. Is this an indication of Multi-Path Reception? May be with different propagation modes at that time over certain distances possible? 2. Is this therefore, e.g., based on delay times (phase/arrival time differences) of reflections from different ionospheric layers ( e.g. f1, f2 etc.) ? 3. Is this based on quasi simultaneous occurrences of skywave, NVIS and may be even groundwave mode ? Any comments or reporting of similar observations are greatly appreciated. PS: I observed this " shift effect" also sometimes for OTH-Radar (real or faked, yes some are faked, see my qrz.com under DQRM) signals recently on 40m, in EU late afternoon , night time here. Tnx, Cu, vy 73 de Andy HB9CVQ, DK2VQ, AK4IG <https://www.qrz.com/db/HB9CVQ> https://www.qrz.com/db/HB9CVQ __ 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 towd5...@frii.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] WTB: K2 Frequency Counter Probe
Hello, I misplaced mine a while ago and want to buy one if you have an extra or don't need it. Please reply with the price shipped to 02038. Many thanks, Chris KM1B __ 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] KX3 2M transverter
Yes, Steve, all modes supported by the KX3 are usable on all bands, including those using either internal or external transverters. I am using my KX3 now primarily as the I/f for my 10GHz rig and have used it on multiple modes including CW, SSB, FM, AM, and digital. Chris Cox, N0UK chr...@chris.org https://www.credly.com/go/IR77aRbH2rFDdOiymuxu2w > On Dec 28, 2023, at 12:01, Steve McKee wrote: > > Is it possible to transmit on 2M in the SSB or AM modes?? > Couldn’t see an option for those except FM. > > KE0RSI > null > __ > 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 chr...@chris.org __ 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] WTB: K2 Frequency Counter Probe
Hello, I misplaced mine a while ago and want to buy one if you have an extra or don't need it. Many thanks, Chris KM1B __ 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] KX2 question
Thanks, Walter K6WRU: That was indeed the document I was mis-remembering as one page... But it describes how to get INTO the CW announce mode, but does not tell how to EXIT the mode. I think I did a device reset to go back to turn CW announce OFF. I also note that I appear to need a newer version of the manual that came with the radio. I downloaded the e-version, but my computer does not fit in my day-pack! 73, Chris K0PF On 12/4/2023 9:13 AM, Walter Underwood wrote: This all-text document has a physical description and documents the audio-CW feedback. https://ftp.elecraft.com/KX2/Mod Notes Alerts/KX2 CW UI, rev A3.pdf <https://ftp.elecraft.com/KX2/Mod Notes Alerts/KX2 CW UI, rev A3.pdf> wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) On Dec 4, 2023, at 8:03 AM, Chris wrote: I saw a one-page note on this but I cannot find it in my records. If I recall it is a mode of some sort that causes the CW Identifier, for handicapped hams, I think. I did a reset to clear it. Sorry for being vague, it has been a couple months, but maybe support can point you to that one-pager. It should be in the fw release notes, really... 73, Chris, K0PF On 12/1/2023 9:59 AM, Bud wrote: Folks … I recently invoked the latest firmware update on my KX2 (s/n 1031). Upon beginning use of the KX2 after the firmware update two changes to the operating configuration were noticed. They are: 1) Upon pressing any of the front panel push button switches, a CW identifier takes place. How do I delete this from happening? 2) The “display” push button no longer displays the several functions it once did. What do I need to do to bring back the display functions when I push the “display” button? Thanks for any help in this matter … Bud, NY1Z … __ 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 wd5...@frii.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 wun...@wunderwood.org __ 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] KX2 question
I saw a one-page note on this but I cannot find it in my records. If I recall it is a mode of some sort that causes the CW Identifier, for handicapped hams, I think. I did a reset to clear it. Sorry for being vague, it has been a couple months, but maybe support can point you to that one-pager. It should be in the fw release notes, really... 73, Chris, K0PF On 12/1/2023 9:59 AM, Bud wrote: Folks … I recently invoked the latest firmware update on my KX2 (s/n 1031). Upon beginning use of the KX2 after the firmware update two changes to the operating configuration were noticed. They are: 1) Upon pressing any of the front panel push button switches, a CW identifier takes place. How do I delete this from happening? 2) The “display” push button no longer displays the several functions it once did. What do I need to do to bring back the display functions when I push the “display” button? Thanks for any help in this matter … Bud, NY1Z … __ 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 wd5...@frii.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] My K2 has USB mode off by about 1.9kHz
Hello, I have a K2 with its USB off by about 1.9kHz. This K2 was built by someone, and I am the third owner. How do I calibrate it? Moreover, the audio of USB mode is a little harsh to my ears. Everything else seems working fine. Thanks, Chris KM1B __ 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] Last Call Upgrade Kits for K3 SOLD
The Kits have been sold to George K2DM thanks for all the interest. I have these upgrade kits for sale. 1 each KIO3BUPKT-WL_KI03B Upgrade Kit for K3 [Sales] 2 each KSYN3AUPG-WL _KSYN3A Upgrade Kit for K3 [Sales] Received these from Elecraft while on Vacation and past the 30-day return window. These are factory sealed in the original shipping box. Sell as a package only please to an operator who wants to upgrade their K3. Cost from Elecraft was $1287.94 Original invoice included. Will sell for $ 1250. Shipped to CONUS address. PayPal is ok (fees paid by buyer, if there are any), ZELLE and VENMO is okay for payment. Personal or Cashier's checks are okay, but time will have to be allowed for ample time to clear and be deposited. Please contact me off list. QRZ email is current. 73 Chris KD6EOS __ 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] For Sale Last call upgrade kits for K3.
I have these upgrade kits for sale. 1 each KIO3BUPKT-WL_KI03B Upgrade Kit for K3 [Sales] 2 each KSYN3AUPG-WL _KSYN3A Upgrade Kit for K3 [Sales] Received these from Elecraft while on Vacation and past the 30-day return window. These are factory sealed in the original shipping box. Sell as a package only please to an operator who wants to upgrade their K3. Cost from Elecraft was $1287.94 Original invoice included. Will sell for $ 1250. Shipped to CONUS address. PayPal is ok (fees paid by buyer, if there are any), ZELLE and VENMO is okay for payment. Personal or Cashier's checks are okay, but time will have to be allowed for ample time to clear and be deposited. Please contact me off list. QRZ email is current 73 Chris KD6EOS __ 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] QST - My new book about CW and Morse Code
Greetings. I'd a daily reader and occasional poster to the group - K#, KX3, KAT500, and KPA500. Forgive the commercial interruption, but I wanted to share that my book, The CW Way of Life, is now available on Amazon. https://amzn.to/3ltqzBo I announced it a couple of weeks back on the LICW and SKCC group site, and the feedback from readers has been almost embarrassing. One fellow called it a "modern-day seminal work on CW." Several said they wish they had it when starting out. ALL have called it a good read. Enjoy! 73 Chris NW6V __ 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 & K3S Options Last Time Buy Update (12/02/2022)
I still haven’t received contact yet about the items I had ordered in April 2020 other than the original purchase confirmation. I had ordered both a new synthesizer upgrade and a general coverage bandpass filter. Could the delay in hearing anything be waiting on both kits to become available or should I have heard about the KSYN3A already? Chris Cox, N0UK chr...@chris.org https://www.credly.com/go/IR77aRbH2rFDdOiymuxu2w > On Feb 28, 2023, at 14:53, Pete Smith N4ZR wrote: > > Well, for what it's worth, I'm one of those waiting 2+years for an update > kit, and a week ago I got an e-mail from Elecraft telling me that it would be > shipping in 5-7 days. I don't know if some are ready but not others. I > reported this on this reflector at the time. > > 73, Pete N4ZR > > On 2/28/2023 3:11 PM, Lee Hiers wrote: >> On Thu, Feb 16, 2023 at 12:48 PM Wayne Burdick wrote: >> >> >>> Eric may want to elaborate. >>> >> Apparently not. >> >> Consider we're 12 weeks into a "6-8 weeks" window on some of these items. >> That's 4 to 6 weeks past due with no notice and almost two weeks after >> Wayne addressed it at all - in response to queries about why nothing has >> been said. >> >> Not to mention the ~2 year wait already endured. I know...Covid, supply >> chain, blah, blah. That does not absolve Elecraft of communicating with >> its customers. >> >> Lee, AA4GA >> __ >> 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 topete.n...@gmail.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 chr...@chris.org __ 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- Part fell out!
3.3 ohm SMT resistor? Chris KD4PBJ > On Jan 23, 2023, at 15:43, Rich WC3T wrote: > > My totally uneducated guess is that it’s a surface mount capacitor. I did > an image search and found what resembles you have. That’s all I can offer. > Good luck. > > 72, > Rich Hurd / WC3T / DMR: 3142737 / SOC #1221 > Grid: FN20is > Bureaucracy is always in search of self-preservation. — AA7BQ > >> On Jan 23, 2023, at 16:23, Dennis W1UE wrote: >> >> I dropped d a lock washer into the bowels of my K3 today, so had to invert >> the unit to get the washer out of the unit. When I did so, the washer fell >> out of the unit, but so did another component. Its a small rectangular >> part, white on one side and blackish on the other, and either "3K3" or >> "3R3" is stamped on it. I don't know where the part came from, or where it >> should go back' I'm just sure it doesn't belong sitting on my bookshelf >> rather than be in the radio. >> >> Can anyone maybe help me find where it should be going? I know its not an >> easy >> thing to diagnose, but any suggestions on where it should go before I try >> taking >> the radio apart again. >> >> Dennis w1UE >> __ >> 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 r...@wc3t.us > __ > 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 kd4...@gmail.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] K2 with narrow USB transmit audio
Hi Don, Thank you for the info. The issue with my K2 is with the transmit audio, so would the same BFO frequency for the receiver affect the transmitter? Best, Chris KM1B On Sun, Nov 6, 2022 at 1:56 PM Don Wilhelm wrote: > Chris, > > That condition is normally the result of improper alignment of the BFO > frequencies for the upper sideband. > There should be no difference is width for LSB and USB that could be > blamed on a part. > > Use an audio spectrum analyzer (Spectrogram for instance) for best > results when aligning the filters, and set the low frequency "knee" of > the passband at 300 Hz. If possible use a broadband noise generator at > the antenna connection, or you can often use "dead band noise" (no > signals within the bandpass). > > 73, > Don W3FPR > > On 11/5/2022 6:41 PM, Chris wrote: > > Hello, > > > > I have three K2's, and one of them has a very strange symptom. It works > > well in LSB and CW, but USB transmit audio seems very narrow. Receive > > audio in all modes works well with no issues. > > > > > > __ 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] K2 with narrow USB transmit audio
Hello, I have three K2's, and one of them has a very strange symptom. It works well in LSB and CW, but USB transmit audio seems very narrow. Receive audio in all modes works well with no issues. Thank you in advance, Chris KM1B __ 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] Faulty KDSP2 module
Hello, I have a faulty KDSP2 module. The message that I get from DISPLAY button press is in the attached picture. Normal state should show 'S1 nr nt' but mine shows 'Sn G 7.0'. I have replaced it with a working DSP module, and it works fine. Any ideas? Thanks, Chris KM1B __ 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] My K2 lost audio
It was found to be a faulty KDSP2 module. Can anyone help me with troubleshooting? The battery was checked OK, and there is no visible issue anywhere. Any suggestions? Many thanks, Chris KM1B On Fri, Jul 29, 2022 at 2:47 PM Don Wilhelm wrote: > Chris, > > Do you still have sidetone? If so Control Board U9 is still active, so > check the MUTE signal and CB Q6 and Q7 operation. > > If you have the KDSP2 installed, remove it and install 2 wire jumpers > one between CB J1 pin 1 and CB J2 pin 1. The second jumper between CB > J1 pin 2 and CB J2 pin 2. > If that restores the audio, you have a problem on the KDSP2. > > 73, > Don W3FPR > > On 7/29/2022 2:07 PM, Chris wrote: > > A quick update on this. George, W1JHR, suggested checking the faulty > > headphone jack. It could be an easy fix, but my case is different > because > > I don't get audio on the headphone jack either. The issue seems to be > > somewhere on the AF circuit. > > > > I get the audio back if I leave the radio turned off long enough, but it > > disappears about 10 minutes after powering on, so something must trigger > > the loss of receive audio. Any suggestions will be helpful. > > > > Many thanks, > > > > Chris KM1B > > > > > > On Tue, Jul 26, 2022 at 10:43 AM Chris wrote: > > > >> Hello, > >> > >> I have two K2/100, and one of them developed an issue last night. It > >> suddenly lost audio. The S-meter is working, and it transmits fine but > no > >> receive audio. When I leave it long enough, the audio comes back > >> occasionally, then goes off. I get the same results from the > headphones, > >> so the issue must be in the AF section. Any suggestions? > >> > >> Many thanks, > >> > >> Chris KM1B > >> > >> > > __ > > 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 d...@w3fpr.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] My K2 lost audio
After following Don's suggestions, the issue was found to be from the failed KDSP2 module. I have replaced the KDSP2 with my extra KAF2 module and got the audio back. Now, I have to troubleshoot the KDSP2 module. As I am getting the audio on and off intermittently with the KDSP2, I will check if there is any solder joint. Many thanks, Chris KM1B On Fri, Jul 29, 2022 at 1:47 PM Don Wilhelm wrote: > Chris, > > Do you still have sidetone? If so Control Board U9 is still active, so > check the MUTE signal and CB Q6 and Q7 operation. > > If you have the KDSP2 installed, remove it and install 2 wire jumpers > one between CB J1 pin 1 and CB J2 pin 1. The second jumper between CB > J1 pin 2 and CB J2 pin 2. > If that restores the audio, you have a problem on the KDSP2. > > 73, > Don W3FPR > > On 7/29/2022 2:07 PM, Chris wrote: > > A quick update on this. George, W1JHR, suggested checking the faulty > > headphone jack. It could be an easy fix, but my case is different > because > > I don't get audio on the headphone jack either. The issue seems to be > > somewhere on the AF circuit. > > > > I get the audio back if I leave the radio turned off long enough, but it > > disappears about 10 minutes after powering on, so something must trigger > > the loss of receive audio. Any suggestions will be helpful. > > > > Many thanks, > > > > Chris KM1B > > > > > > On Tue, Jul 26, 2022 at 10:43 AM Chris wrote: > > > >> Hello, > >> > >> I have two K2/100, and one of them developed an issue last night. It > >> suddenly lost audio. The S-meter is working, and it transmits fine but > no > >> receive audio. When I leave it long enough, the audio comes back > >> occasionally, then goes off. I get the same results from the > headphones, > >> so the issue must be in the AF section. Any suggestions? > >> > >> Many thanks, > >> > >> Chris KM1B > >> > >> > > __ > > 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 d...@w3fpr.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] My K2 lost audio
A quick update on this. George, W1JHR, suggested checking the faulty headphone jack. It could be an easy fix, but my case is different because I don't get audio on the headphone jack either. The issue seems to be somewhere on the AF circuit. I get the audio back if I leave the radio turned off long enough, but it disappears about 10 minutes after powering on, so something must trigger the loss of receive audio. Any suggestions will be helpful. Many thanks, Chris KM1B On Tue, Jul 26, 2022 at 10:43 AM Chris wrote: > Hello, > > I have two K2/100, and one of them developed an issue last night. It > suddenly lost audio. The S-meter is working, and it transmits fine but no > receive audio. When I leave it long enough, the audio comes back > occasionally, then goes off. I get the same results from the headphones, > so the issue must be in the AF section. Any suggestions? > > Many thanks, > > Chris KM1B > > __ 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] My K2 lost audio
Hello, I have two K2/100, and one of them developed an issue last night. It suddenly lost audio. The S-meter is working, and it transmits fine but no receive audio. When I leave it long enough, the audio comes back occasionally, then goes off. I get the same results from the headphones, so the issue must be in the AF section. Any suggestions? Many thanks, Chris KM1B __ 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] Oh Crap
That looks interesting, Ken. I had not seen such a tool before. I’ll dig deeper and see if they make a version for 6.3mm plugs too. Chris Cox, N0UK chr...@chris.org https://www.credly.com/go/IR77aRbH2rFDdOiymuxu2w > On Jul 20, 2022, at 11:53, Ken Winterling wrote: > > How about this tool? I've used smaller versions to remove pins in connetors. > > AmazonSmile: Headphone Plug Extraction Tool- Remove Broken Headphone Plug > from Headphone Jack of Mobile Devices : Electronics > > Ken > WA2LBI > > > On Wed, Jul 20, 2022 at 12:38 PM Chris Cox, N0UK wrote: > I have suffered the very same failure but on my K3. Despite extensive > attempts on my part, removing the dislodged tip has proven futile and it > appears that the female jack will need to be replaced. Removing it might > help but it’s just too finicky for me. > > Chris Cox, N0UK > chr...@chris.org > https://www.credly.com/go/IR77aRbH2rFDdOiymuxu2w > > > > > On Jul 18, 2022, at 07:30, Douglas Speer wrote: > > > > I received my Ship Group 3 Elecraft K4; in the middle of an across country > > move. So it remained in the box until this past weekend. While setting up, > > in error I plugged my 1/4” tip/ring/ground paddle connector into the 1/4” > > KEY Jack on the back of the rig instead of the correct PADDLE jack. When I > > pulled the plug out of the KEY jack, the tip of the 1/4” plug broke off and > > is now lodged inside the KEY jack. > > > > It looks as if I will need to open the cabinet in order to extract the tip > > piece. I can’t find any online photos of an open K4. Looks as if I should > > open the top. Has anyone out there had the top cover off? Any advice or > > precautions I should be aware of? > > __ __ 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] Oh Crap
I helped a neighbor remove a broken headphone connector from her daughter's iMac laptop. I used a pin vise and a tiny drill bit like I use for drilling holes in PC board. I drilled by hand into the broken connector barrel using the pin vise and slowly worked the broken plug body out. Chris KD4PBJ > On Jul 20, 2022, at 11:55, Ken Winterling wrote: > > How about this tool? I've used smaller versions to remove pins in connetors. > > AmazonSmile: Headphone Plug Extraction Tool- Remove Broken Headphone Plug > from Headphone Jack of Mobile Devices : Electronics > <https://smile.amazon.com/kenddeel-Headphone-Extraction-Remove-Devices/dp/B0991ML3Y3/ref=sr_1_1_sspa?crid=1J9CSFEAOHTIG=headphone+plug+extraction+tool=1658335880=electronics=headphone+plug+extraction+tool%2Celectronics%2C72=1-1-spons=1=A2HS9S3GEKH25N=ZW5jcnlwdGVkUXVhbGlmaWVyPUFBVEY4VTQ3S1o1MUYmZW5jcnlwdGVkSWQ9QTA4MzA5NDEyMjdHWTlYRDI3TU82JmVuY3J5cHRlZEFkSWQ9QTAxNjEyNjEyRVBKMkZMOUpWWDc1JndpZGdldE5hbWU9c3BfYXRmJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ==> > > *Ken* > *WA2LBI* > > >> On Wed, Jul 20, 2022 at 12:38 PM Chris Cox, N0UK wrote: >> >> I have suffered the very same failure but on my K3. Despite extensive >> attempts on my part, removing the dislodged tip has proven futile and it >> appears that the female jack will need to be replaced. Removing it might >> help but it’s just too finicky for me. >> >> Chris Cox, N0UK >> chr...@chris.org >> https://www.credly.com/go/IR77aRbH2rFDdOiymuxu2w >> >> >> >>> On Jul 18, 2022, at 07:30, Douglas Speer >> wrote: >>> >>> I received my Ship Group 3 Elecraft K4; in the middle of an across >> country move. So it remained in the box until this past weekend. While >> setting up, in error I plugged my 1/4” tip/ring/ground paddle connector >> into the 1/4” KEY Jack on the back of the rig instead of the correct PADDLE >> jack. When I pulled the plug out of the KEY jack, the tip of the 1/4” plug >> broke off and is now lodged inside the KEY jack. >>> >>> It looks as if I will need to open the cabinet in order to extract the >> tip piece. I can’t find any online photos of an open K4. Looks as if I >> should open the top. Has anyone out there had the top cover off? Any >> advice or precautions I should be aware of? >> >> __ > __ > 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 kd4...@gmail.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] Oh Crap
I have suffered the very same failure but on my K3. Despite extensive attempts on my part, removing the dislodged tip has proven futile and it appears that the female jack will need to be replaced. Removing it might help but it’s just too finicky for me. Chris Cox, N0UK chr...@chris.org https://www.credly.com/go/IR77aRbH2rFDdOiymuxu2w > On Jul 18, 2022, at 07:30, Douglas Speer wrote: > > I received my Ship Group 3 Elecraft K4; in the middle of an across country > move. So it remained in the box until this past weekend. While setting up, > in error I plugged my 1/4” tip/ring/ground paddle connector into the 1/4” KEY > Jack on the back of the rig instead of the correct PADDLE jack. When I pulled > the plug out of the KEY jack, the tip of the 1/4” plug broke off and is now > lodged inside the KEY jack. > > It looks as if I will need to open the cabinet in order to extract the tip > piece. I can’t find any online photos of an open K4. Looks as if I should > open the top. Has anyone out there had the top cover off? Any advice or > precautions I should be aware of? __ 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 audio problem
Hi I have a strange problem with my K3/100. The audio through the internal speaker is low, but comes up much stronger with any slight movement of the volume knob. Then it goes back down again, often accompanied by a brief HI-CUR warning. Also when AGC is turned off, audio is almost zero. But, with the SP3 external speaker plugged in, the problem goes away! Any insights much appreciated. Chris VK2ACD __ 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] Have a K-2 SN 01049
Actually, the serial number of the K2 in question is actually 1049. DE KM1B On Tue, May 31, 2022 at 8:44 PM Joe Subich, W4TV wrote: > > Don, > > You are conflating two different rigs. 01949 is the QRP rig mentioned > by W6YCA who has no idea of what is installed, etc. Tim does not know > the serial number of the K2/100 with SSB, DXP and KAT100 owned by his > friend (that has only receive "lowball" offers). It is the K2/100 that > you supposedly built and have worked on a couple of times. > > 73, > > ... Joe, W4TV > > > On 2022-05-31 7:22 PM, Don Wilhelm wrote: > > Tim, > > > > Most importantly, ask him if I upgraded it with the A to B upgrades. > > SN 01949 is pretty old. > > If can give me his name and callsign, I can search through my records > > > > 73, > > Don W3FPR > > > > On 5/31/2022 6:08 PM, Tim Tucker wrote: > >> Thanks Don. He says that you're the one that built it for him and has > >> been > >> back to you a couple of times (for what, I'm not sure). I'll ask him for > >> the serial number; it's the K2/100 with DSP and SSB, as well as the > >> KAT100 > >> to go with it. > >> > >> Tim > >> > >> On Tue, May 31, 2022 at 2:46 PM Don Wilhelm wrote: > >> > >>> Tim, > >>> > >>> There are several variations of a K2, so the fair price depends on the > >>> state of the upgrades (as well as the options installed). If it is > >>> above SN3000 and if the KPA100 has been upgraded, it should bring a > fair > >>> price. > >>> He should state which upgrades and options have been installed. > >>> If it is below SN3000, and has not been upgraded, it will have a low > >>> price, but if above 3000 with all upgrades he should get a good price. > >>> There is a good list of upgrades in the K2AtoB instructions for the > base > >>> K2 (except for the upgraded IF Crystals). > >>> > >>> I have a K2 SN 00020 that has been FULLY upgraded, and it performs just > >>> like a new one. > >>> Serial numbers above 6400 have all updates included already, but the > one > >>> Chris asked about is SN 1049 and may need a lot of options. When I was > >>> working on the K2 a full set of options was price at about $500 and > >>> likely is higher now. > >>> > >>> 73, > >>> Don W3FPR > >>> > >>> On 5/31/2022 5:14 PM, Tim Tucker wrote: > >>>> Once you figure it out and if you do sell, please let us know what you > >>> get > >>>> for it. A local here has a loaded K2/100 that he's been trying to sell > >>> for > >>>> a while but has only received what he perceives as low offers. I'm > >>>> interested to find out where the market for these is at. > >>>> > >>>> Tim > >>>> AE6LX > >>>> > >>>> On Tue, May 31, 2022 at 1:55 PM George Paul Linehan III via Elecraft < > >>>> elecraft@mailman.qth.net> wrote: > >>>> > >>>>> Considering selling but need to figure out what is installed, as I > >>> haven’t > >>>>> used the rig much after purchase. Elecraft is missing a block of > >>> records. > >>>>> They suggest opening up & taking pics. Any others thoughts > >>>>> appreciated. > >>>>> It’s the QRP version with a tuner. Thanks. Paul WA6YCA > >>>>> __ > >>>>> 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 ae...@worldwidedx.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 li...@subich.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 ve3...@gmail.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] Support email
I have emailed Elecraft Support twice this week but have received no reply or acknowledgement. Anyone know if they’re working this week? I was trying to validate that an RSA # that was issued mid-last year is still valid now that there is some reasonable ETA on the K3 option orders. I was hoping to combine the minor radio repair with installation and checkout of the two items that I had ordered. Chris Cox, N0UK chr...@chris.org https://www.credly.com/go/IR77aRbH2rFDdOiymuxu2w __ 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] K1 accessories
Hello all, I've been able to buy a K1 here in VK. It is in excellent condition (Ser. No 3380) and has 20 & 40m only. I know Elecraft stopped supporting some time ago and accessories etc are pretty much discontinued. I'm interested in getting 15 & 17m band modules - can anyone offer any thoughts on where I might ask around - or advertise a "wanted" Other than eHam.net. Thanks in advance, Chris VK3QB __ 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] K2 SN 25xx has very low sensitivity in 20 and 80m bands
Hello, My K2 developed a very weird issue. The sensitivity is very low in 20 and 80m bands. It receives but the S-meter reading is much low compared to other receivers that I compared. For example, an S9 signal on another good receiver is barely S1 on K2. Other bands are fine. Any advice on where to check first? Thank you. DE KM1B Chris __ 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] Shipping via UPS - A Lesson Learned the Hard Way
I never pay the UPS store for shipping. Instead, I create my shipment from UPS website, then ask them for pick up or bring it to ‘The UPS Store.’ Insurance is not the only thing they charge extra. Their boxes are outrageously expensive. If you need boxes for shipping, you’d better get some from U-Haul. Chris KM1B On Mon, Apr 11, 2022 at 8:31 PM Wes wrote: > Good Grief. > > I look at these groups as like starting a conversation with my neighbor > over the > fence about crab grass. (Where I live we have neither fences or grass, > crab or > otherwise. so I'm speaking metaphorically). If the topic drifts to sports > or ham > radio, I don't take offense. I can either stay engaged or beg off by > telling my > neighbor I have to go in for another beer. I might even invite him over > to > share one. > > In the case at hand, I fail to understand the hardship of using the delete > key. > > Wes N7WS > > > > > > On 4/11/2022 4:45 PM, Andrew Moore wrote: > > Other than trying to remember and ignore by subject line, is there a way > to > > mute specific threads on the Elecraft mailing list (via qth.net)? Maybe > I'm > > thinking of the feature on @groups.io mailing lists - but this would be > > helpful as Elecraft related topics morph into posts containing no > Elecraft > > content. While this content has value, it also dilutes value, as it's not > > Elecraft specific. > > > > Thanks & 73, > > -Andrew NV1B > > .. > > > > > > On Mon, Apr 11, 2022 at 7:26 PM Jim Brown > wrote: > > > >> On 4/11/2022 3:29 PM, eda...@aya.yale.edu wrote: > >>> The UPS Store does not charge real UPS rates. > >> Ditto for FedEx stores. BUT -- both are free drop-off locations for > >> shipments that have been created online. I do all my shipping with > >> FedEx, because UPS Stores use packing peanuts, and FedEx stores do not. > >> > >> Packing peanuts are an obscenity -- they blow around the property, > >> making a huge mess. There are SO many good alternatives, everything from > >> wadded up newspaper, butcher paper, the machined flexy paper tubes that > >> Amazon uses (all most environmentally friendly), to bubble-wrap and > >> air-filled plastic. I save bubble wrap and re-use it. The paper starts > >> my fireplace. > >> > >> The only issue I've had with either company is that their drivers often > >> leave packages in my driveway, rather than to my porch. That's a very > >> big deal when they're heavy, because I'm old and there are a dozen > steps. > >> > >> 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 > >> Message delivered to andrew.n...@gmail.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 wes_n...@triconet.org > > __ > 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 ve3...@gmail.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] KXPD2 paddle not working
Hi Gary, You can disconnect the paddle and do a continuity check with your multimeter. It seems that the problem is on the paddle. You can easily disassemble it to see where the problem is. I did clean mine, and it is fairly easy. Best 73, Chris KM1B On Tue, Mar 8, 2022 at 11:57 AM Gary Slagel via Elecraft < elecraft@mailman.qth.net> wrote: > The left side of my KXPD2 paddle is not working, the right side is fine. > I've reversed the CW KEY 2 setting and it continues to be the left side > that doesn't work. > Is there a simple test I could do to determine if it is a paddle problem > or a KX2 problem? I don't have anyone local who owns a kx2 so I've no way > to test with another radio. > GaryKT0A > > __ > 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 ve3...@gmail.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] K4 Remote Software?
Wayne said: "Did I mention we're also working on a DX tractor beam?" No secret there - the attraction from Elecraft is very strong... 73 - Merry Xmas - and HNY Chris NW6V DDddd-dddDD __ 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] [K2] Cheap power supply for KBT2
Hi Jim, Excellent article. I haven't checked if it is a source of noise, but it doesn't quite matter because this is a charger, not a power supply. I only use it when I need to charge a battery, so it is OK. Best 73, Chris KM1B On Wed, Nov 24, 2021 at 2:03 PM Jim Brown wrote: > On 11/24/2021 6:29 AM, Chris wrote: > > I use this, and it seems to be working very well. > > Have you checked it for noise, using techniques in this app note? > http://k9yc.com/KillingReceiveNoise.pdf > > Most hams have so much receive noise that they can't hear. If you > haven't gone through your home to get rid of your own noise sources, > chances are you're one of them. > > 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 > Message delivered to ve3...@gmail.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] [K2] Cheap power supply for KBT2
Hi Doug, I use this, and it seems to be working very well. When you order, make sure you specify a 14.8V (or 14.6V) model. Some reviews complain that the voltage measurement is only 12V, but mine clearly shows 14.8V on my Fluke meter. https://www.amazon.com/D1761-Sealed-Charger-Dual-Stage-Terminals/dp/B001G8DVS8/ref=sr_1_2?keywords=UPG%2BD1761%2BSealed%2BLead%2BAcid%2BCharger=1637762614=133-0654908-3443739=8-2=B001G8DVS8%2CB07F8WM7WZ%2CB07Z41QY5F%2CB01822CSA2%2CB073Z73TB5%2CB091P4FH3H%2CB071FKXHTR%2CB07W46BX31%2CB00GLUP1UC%2CB08RY4GS4D%2CB08XJLYSXJ%2CB08R9VGGJH%2CB081YP9Y3K%2CB07CZ7KWP3%2CB00CV6HZSG%2CB089SV4W5H%2CB085CD1F5V%2CB082VQJQJP%2CB07B4V3HC4%2CB075YN8XLP=1 Chris KM1B On Tue, Nov 23, 2021 at 9:47 PM Douglas Hagerman via Elecraft < elecraft@mailman.qth.net> wrote: > Looking for ideas for a cheap 14 volt wall wart type power supply for > recharging the KBT2 battery. Is there one available that has the right > plug? I see lots of 12 volt and 14.4 volt chargers out there, but??? > > Thanks, Doug, W0UHU. > > > __ > 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 ve3...@gmail.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] K3s
I am trying to use my K3s with a program but it does not list the K3s in the drop down list is there another rig from the drop down list that would let me use that is the same as the K3s thanks Chris -- This email has been checked for viruses by AVG. https://www.avg.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] Last round of K3 upgrades
I’ve heard nothing since sending in my order back in the early Spring. Nothing either on the KX3 TxInhiibit VOX bug reported to Elecraft in August last year. Chris Cox, N0UK chr...@chris.org > On Oct 1, 2021, at 10:50, Pete Smith N4ZR wrote: > > It's been more than a month since Elecraft's "last call" for these updates, > but I haven't seen anything to suggest when they might be available. Anything > from on high? > > -- > 73, Pete N4ZR > Check out the new Reverse Beacon Network > web server at <http://beta.reversebeacon.net>. > For spots, please use your favorite > "retail" DX cluster. > > __ > 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 chr...@chris.org __ 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] P3 price
Wanting to know the price of new P3 and SVGA board in US$ before they were discontinued. thanks Chris VK2ACD __ 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] Problem with my KXPD2
Hello, My KXPD2 paddle has some issues. It moves very sluggishly and causes errors. The manual doesn't have any service instructions. Is anyone else having the same problem? Any suggestions? Thanks, Chris KM1B __ 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] KX3 FW - N0UK tx inhibit & CW sidetone bug reproduced
Still hoping for some resolution to this problem since it’s now been a year since it was reported to and acknowledged by Elecraft as being a firmware bug. It really renders the KX3 as fairly useless as an I/F rig for microwave transverters if you need the TxInhibit function. Chris Cox, N0UK chr...@chris.org > On Oct 10, 2020, at 09:58, Drew Arnett wrote: > > I was able to reproduce the bug Chris, N0UK, reported with tx inhibit > and CW sidetone on the KX3. > > To be thorough, the FW as just installed by Elecraft, is uC 02.90 > anddsp 01.52which is the latest. > > I have cabling for the ACC2 port, as I use ring contact to PTT a > transverter and also to PTT a KXPA100. > > Menus have had minimal configuration post service from elecraft, just > enough to setup for transverter operation in the 10 GHz contest. Mode > is CW and VOX is on of course. > > ACC2 Inhibit = Low. I used a paddle on the KXPD paddle port (key 2). > Was able to get the stuck sidetone as you describe while sending dits > or sending dahs by. (Key 2 left = dot.) For kicks, changed to Key 2 > = hand. Found that if the key is released before inhibit is released, > the sidetone does not stick. The value of inhibit when the key is > initially asserted is not buggy. Saw the same behavior with menu > setting inhibit high. > > inhibit low > key - inhibit - inhibit release - key release --> sidetone stuck > key - inhibit - key release - inhibit release --> sidetone OK > inhibit - key - inhibit release - key release --> sidetone stuck > inhibit - key - key release - inhibit release --> sidetone OK > > inhibit high > key - inhibit - inhibit release - key release --> sidetone stuck > key - inhibit - key release - inhibit release --> sidetone OK > inhibit - key - inhibit release - key release --> sidetone stuck > inhibit - key - key release - inhibit release --> sidetone OK > > The behavior is a problem is in the firmware at the inhibit released event. > > A thorough bug report would also include observations of the PTT > output and actual RF output. > > Best regards, > > Drew > n7da > >> 6. Continuing saga with Tx Inhibit and the KX3 - possible >> firmware bug? (Chris Cox, N0UK) >> 16. KX3 Tx Inhibit CW-VOX problem (Chris Cox, N0UK) >> >> >> Message: 6 >> Date: Mon, 14 Sep 2020 16:14:57 -0500 >> From: "Chris Cox, N0UK" >> To: elecraft...@groups.io >> Cc: elecraft@mailman.qth.net >> Subject: [Elecraft] Continuing saga with Tx Inhibit and the KX3 - >>possiblefirmware bug? >> Message-ID: <583cb8e7-8618-4c4e-a630-8ccaacb9e...@chris.org> >> Content-Type: text/plain; charset=utf-8 >> >> Having solved the need for getting +Ve Tx Inhibit working on my KX3/10GHz >> Transverter integration using a mosfet switch to invert the signal and >> configured the KX3 for 0v Tx Inhibit, I had opportunity to test it out this >> afternoon. >> >> The solution seemed to work fine on SSB but I now have a weird issue when >> using the rig on CW. >> >> If I manually select transmit with the microphone PTT and then wait for the >> transverter sequencing to remove Tx Inhibit and then key CW with the >> paddles, the system works as desired. >> >> If I key the system using VOX, the Tx Inhibit functions correctly, fully >> disabling the transmitter from producing RF until TxInhibit is removed BUT >> the CW sidetone becomes permanently on from the moment TXInh disappears >> regardless of whether I am sending or not. It stays present until I press >> any of the buttons on the KX3. This happens regardless of which band is >> enabled, but occurs whenever TxInhibit is present. >> >> If I remove the TXInh fro the GPIO input (but leave the option enabled in >> the KX3 config) the rig operates normally. >> >> Can anyone else replicate this oddball behavior? It seems to be a firmware >> bug. I have tried removing power but that does not alter the effect. >> >> Again, all works just fine if I don?t try to key the paddles before PTT >> sequencing has changed over. >> >> Chris Cox, N0UK >> chr...@chris.org >> >> >> >> >> >> >> Message: 16 >> Date: Tue, 15 Sep 2020 08:10:31 -0500 >> From: "Chris Cox, N0UK" >> To: elecraft@mailman.qth.net >> Subject: [Elecraft] KX3 Tx Inhibit CW-VOX problem >> Message-ID: <66381756-c09a-4a99-8aa5-1e015b182...@chris.org> >> Content-Type: text/plain; charset=utf-8 >> >> Having solved the need for getting +Ve Tx Inhibit working
[Elecraft] 10-pin connector for KAT2
Hello, Is there an easy source for the 10-pin connector for KAT2, or do I have to get it from Elecraft directly? Mine needs to be replaced. Thanks, Chris KM1B __ 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] K3S connections for Winlink Express -
1. The single USB cable is all that's needed. 2. The USB setting was already set to RS232, all that's needed. In using the Elecraft Utility to check the connection, the rate for the connection was 38,400 b/s. I had entered only 9,600 b/s into Winlink Express. The Elecraft K3S operation manual explains how to check which port on the computer that the K3S appears on. (Windows: Device manager/ Ports: plug/unplug the device) The K3S was on COM4. (Although no other devices were attached, COM3, was taken by something. Beware.) Actions: In Winlink Express / ARDOP Connection settings/ Radio: Set both ports to COM4 and the rate to 38,400 b/s. Neat! Chris NQ8Z -- 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] K3S connections for Winlink Express -
I'm running Winlink Express 1.5.37.0 with my K3S, using the same K3S USB connector to computer cable that serves well for FLDigi. All is working well if the frequencies and bandwidths are set manually, however, I'm not getting K3S frequency setting by Winlink Express when channel setting on Winlink. All the work has been with ARDOP Winlink sessions. Do I need a cable from the RS 232 port to the computer USB port? Do I need a K3S special setting? Thanks, Chris NQ8Z -- 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
Re: [Elecraft] What kind of hook-up wire does Elecraft use?
Hi, I use the M22759 series for everything I build both at my home shop and lab at work, a large defense related company. It's inexpensive and Teflon insulation. I bought 2000 ft of #18 last week for work and it's right at 12 cents a foot. It doesn't melt when you solder to it and is easy to work with. The 22 AWG I normally buy is 3 cents a foot. We buy from Wiremasters south of Nashville in Columbia TN. $50 minimum order but no minimum on wire lengths. So you could buy as many feet of each gauge and color as you would like. Normally for home use I buy a thousand feet of a size/color at a time. When I started my work was buying the wire from Digi-Key and it was $60 for 100 ft spool. They no longer do and didn't know about other supplier. I can connect anyone interested with the rep there I use. Chris KD4PBJ Monteagle TN > On May 2, 2021, at 16:09, Mark Goldberg wrote: > > If you want the best, super easy to solder and strip, there is M16878/4. > M16878/5 or M16878/6 Silver plated stranded Copper wire with Teflon > insulation. It is very expensive and I can't see where to buy small > quantities except on eBay where it may be sketchy. /4 is probably most > typical 600V insulated. I got some off spool ends and you may find it at > Hamfests if someone is doing surplus stuff. It does not dry out and lose > plasticisers like PVC, so it is good even if it is old. > > 73, > > Mark > W7MLG > > >> On Sun, May 2, 2021 at 10:19 AM David Haines wrote: >> >> My son has been having trouble with the quality of hook-up wire he's >> able to buy for his projects. There's clearly a difference in vendors. >> >> I'm sure Elecraft uses the best. Any help here? >> >> david >> KC1DNY >> in the woods of Maine >> __ >> 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 marklgoldb...@gmail.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 kd4...@gmail.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] OT: High school drafting class, ~1975
> > Wayne Burdick n6kr at elecraft.com > > wrote:"Here's to those moments, and to that timeless pursuit: turning > abstractions into reality." Indeed. There is nothing so sublime as the moment of clarity when the last pieces of a jigsaw puzzle align, and the vision in your mind's eye crystalizes into reality. Thanks for sharing your visions with us :-) 73 Chris NW6V __ 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] Copying CW and Pitch
On Sat, Mar 13, 2021 at 5:45 PM Jim Brown wrote: > On 3/13/2021 10:48 AM, Sverre Holm (LA3ZA) wrote: > > A CW sidetone pitch of 400 Hz is consistent with what little research > there > > is on this. A paper from 1992 says that "/All subjects improved their > > recognition as the frequency was lowered to 500 Hz, some even at 250 Hz. > > As a retired designer of large sound systems, I had to learn a lot about > acoustics and psychoacoustics (the science of how humans' ear/brain > interprets what we hear). That science tells us that, like most of our > senses, hearing is logarithmic both with respect to frequency and > loudness. This means that our discrimination of one frequency as > compared to another increases with decreasing frequency. That is, we are > better able to separate signals from each other with RX pitch set to > lower frequencies. > > 73, Jim K9YC Exactly right. I have screaming-loud tinnitus at 1700hz - which is louder than conversation, and rises and falls in pitch and volume with every heartbeat... Fun, fun. Changing sidetone from 800 to 400 made a HUGE difference in my ability to copy through the chaos. I did so after reading an article 2 or 3 years ago - perhaps those referenced, but I thought it was done by the USAF for intercept operators in the late 60's - I may be mistaken. ut for those who might not get the implications of what Jim said: our perceptions depend less on absolute values than on the difference between two values. That's why when you get "hot" with a fever, you "feel cold" (and want heat, blankets, etc.): the outside air is now "colder" with respect to your skin temp. In terms of Morse, if the signal you're listening to is at 800 Hz, and the interfering signal (or even the tone of the white noise) is at 700 Hz, the 100hz difference amounts to just 12%. However, if the desired signal is at 400 Hz, and the interfering signal at 300, that 100hz difference is now 25%. At 300/200, it's 50%. Bigger differences are easier to copy. I did have to reprogram myself to listen at the lower frequency - familiarity had bred contentment. 73 Chris NW6V __ 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] 6.3mm to 3.5mm adapter broke off inside the K3 paddle jack
Quick update on my broken plug problem. The suggestion to use a tap to remove the broken plug tip helped a little. It removed the plug ring and ring insulator, however, the tip of the plug is still trapped inside the 1/4” (6.3mm) socket. What’s more, now the ring contact of the socket has sprung back open by a millimetre or two and is now very effectively blocking the further extraction of the broken tip. Word of caution: don’t buy 6.3 to 3.5mm adapters from Amazon! So even if I can find a tool to engage with the tip, I think it rather unlikely that I will also be able to get a second tool into the opening to then depress the ring contact out of the way. Probably the easiest (note - didn’t say EASY!) option now is going to be to replace the actual paddle socket on the K3 RF board. In the meantime, at least the standard key jack is still functional and so I can use an external keyer or straight key to send code. Oh, what a palaver! Chris Cox, N0UK chr...@chris.org <mailto:chr...@chris.org> > On Feb 27, 2021, at 1:52 PM, Chris Cox, N0UK wrote: > > Thanks for that suggestion, Jim. > > Chris Cox, N0UK > chr...@chris.org > > > >> On Feb 26, 2021, at 11:31 PM, Jim Shepherd wrote: >> >> You can use a small screw tap like a 1-64 or 2-56 to carefully insert into >> the hole in the center of the broken off pin and gently turn it until it >> catches and you can gently pull out the pin. Used this to pull out broken >> jacks from speaker-mics on handhelds. >> 73 >> Jim W6US >> > \ __ 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] Subject: Waaay OT: A new kind of QRM to be aware of ... warning issued by FCC today
Spot on,Phil. Chris Cox, N0UK chr...@chris.org > On Jan 18, 2021, at 12:07 PM, Phil Kane wrote: > > On 1/18/2021 6:10 AM, Steve Hall wrote: > >> During my hamming of over 50 years, the FCC has never felt it necessary to >> threaten hams not to break the law, that is not until we have this new >> administration coming into control. My concern is what they will define in >> the future as criminal acts. > > That's because up to now it was unthinkable that licensed hams would use > amateur radio in the commission of crimes. The law and the enforcement > apparatus always was there, though, and was used without any publicity. We're > going through violent times now and it's sad that such a notice had to be > issued. Violators can't say that they weren't warned. > > 73 de K2ASP - Phil Kane > Elecraft K2/100 s/n 5402 > (30 year veteran of FCC Field Enforcement) > > __ > 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 chr...@chris.org __ 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] Mag Loop from MFJ
FWIW - I invested in an MFJ-1786 when we moved into our apartment 6 1/2 years ago. Since then, kit has been out on our 5th floor balcony in central Minneapolis year round, easily standing up to both Minnesotan Winters and Summers with aplomb. It has not ceased to work in that time and has netted me ~150 DXCC’s on all bands from 30 through 10 metres. Most of my work is CW by preference although I did break a pile-up a couple of years back to work VP8 on 20m SSB from an ATNO. To say I am pleased with its performance and capability may be understatement of the decade! I am absolutely gobsmacked at how well such a physically small antenna plays on HF and am willing to stand up for MFJ (at least in this particular case). YMMV, of course… Chris Cox, N0UK chr...@chris.org __ 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 USB cable
Thanks Dick and Mark for your replies. My cable was purchased from elecraft, I will get an FDTI adaptor and see how that goes. Chris VK2ACD On Mon, Jan 18, 2021 at 10:42 AM Dick Dievendorff wrote: > This is probably a message from a Windows USB driver install. I don’t > recall adding that text to the K3 Utility. > > Early KUSB cables used a chipset from a company named Prolofic. Their > brand fell on hard times, there were reportedly some counterfeits. Device > driver support comes from the OS and device vendors, we use what’s there. I > suspect Windows 10 no longer supports the Prolific chipset. > > We’ve moved on (some years ago, more than 10) to USB to serial adapters > that use the FTDI chipset. I’d recommend moving to an adapter with an FTDI > chipset. Elecraft’s KUSB is not the only USB to Serial adapter with the > FTDI chipset, but it does have jack screws to hold the 9-pin connector to > the back of the K3. > > The K3 Utility will use whatever driver the OS provides for the selected > COM port. > > 73 de Dick, K6KR > > > On Jan 17, 2021, at 15:27, Chris Meagher wrote: > > > > Hi > > I recently acquired a new shack laptop, Win 10 Home, > > connected elecraft USB-RS232 cable to update firmware with the latest > > utility. > > But unsuccessful, got the message - > > > > > > So I ended up doing it no problems with an older Win 7 laptop. > > Does anyone have any experience with this or a solution? > > > > thanks > > ChrisVK2ACDK3/10 serial no. in the 600's > > __ > > 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 d...@elecraft.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 USB cable
Hi I recently acquired a new shack laptop, Win 10 Home, connected elecraft USB-RS232 cable to update firmware with the latest utility. But unsuccessful, got the message - So I ended up doing it no problems with an older Win 7 laptop. Does anyone have any experience with this or a solution? thanks ChrisVK2ACDK3/10 serial no. in the 600's __ 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] tip of 3.5 mm plug remains in key jack
I had this happen with a neighbors daughters laptop. I was able to get a small diameter drill bit like is used for drilling pcb holes and using a pin vise put a few twists of the bit into the broken part of the connector. Then I gently pulled it out. Chris KD4PBJ > On Jan 15, 2021, at 11:54 AM, Rich NE1EE wrote: > > On 2021-01-15 18:25:+0100, Eugen Bauknecht via Elecraft wrote: >> Hello, >> after removing the cable of an external key the tip of the stereo 3.5 mm >> plug remains in the KX2 key jack. >> Any idea how to remove the tip without destroying or replacing the key jack? >> Any help is appreciated. >> 73 de Eugen DL4SAS > > I had this happen with one of my "quality" adapters that I used in my Kenwood > TS-830S. I think the reason in my case was 1) the quality adapter (Sony) was > designed for newer jacks, and 2) the older Kenwood jack is very "strong". > That is, the spring tension of the clips that hold the 1/4" plug exert a lot > of pressure. I assume that is because in days of old (I picked this up > decades ago, and still have an original headset from those days) the plug was > also pretty sturdy. Think old style switchboards, and cycles. > > I ended up using a variety of tools, and going in from the rear. The broken > tip was rotated, so it would not simply pop out. I needed to use a fine round > steel pick to line it up correctly, then use another fine tool to press the > tip out from the rear. I went to all this trouble because to get at the jack > on the 830 means dismantling much of the radio. I originally thought, that's > too much work, I should be able to do this easily. Not so. Much patience, > finding the right tools, dexterity. Not familiar with the KX2, but assume > that it would be easier because the KX2 is much newer tech. Heck, might not > even be worth the effort, if the jack is reasonably accessible...just replace > it? Or is it board-mounted? Even so, prob easier to get at than my 830. OTOH, > the 830 jack is "open", so I could get at the internals. Some newer jacks are > encased. In that case (sic), I think that a replacement is in order. > > ~R~ > 72/73 de Rich NE1EE > The Dusty Key > On the banks of the Piscataqua > > __ > 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 kd4...@gmail.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] Oscilloscope recs
I had a zoom based oscilloscope demo with our Keysight rep last Wednesday. They said the $25 k scope I got for our lab at work has the same oscilloscope ASIC chip that the million dollar one has, it's just the bandwidth you are paying for. Chris KD4PBJ > On Dec 19, 2020, at 12:32 PM, SteveL wrote: > > Excited about the scope recommendations on this thread, I’ve been looking at > all the models mentioned, reading specs, etc., etc. thinking about replacing > my old Tektronix 475A - a nice 250MHz dual trace analog scope. > > My heart stopped as I read the specs of the DSAZ594A: > - 59GHz upgradable to 63GHz bandwidth!! (and I was thinking a measly 200MHz > ’scope at less than 1% of the bandwidth of this model would be sufficient !!) > - 80 GSa/sec on 4 channels!! > - 33GHz probes > - 15.4 inch display > and the incredible list goes on and on! > > But seriously… over a half a MILLION dollars!!@#$%@!! > WOW. I held my breath for a moment. One could by well over a THOUSAND nice > Rigol or Siglent scopes at this price. > > I bet Elecraft doesn’t even have one in their development lab? > > Impressive technology all the way down to the custom IC’s designed to process > at microwave frequencies. Interesting reading for those who marvel at > leading edge technology. > > Steve > aa8af > >> On Dec 17, 2020, at 7:04 PM, John Marvin wrote: >> >> Well, if budget permits, I would recommend the Keysight DSAZ594A. This would >> be especially useful on some of the higher amateur radio bands. >> > > __ > 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 kd4...@gmail.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 transverter connector question
Tuning on my K3 stops at exactly 30.000MHz. Chris Cox, N0UK chr...@chris.org > On Nov 13, 2020, at 8:08 AM, Chris Cox, N0UK wrote: > > Hi, Martin. > > Thank you - that is great to hear. I will give that a try and see. I didn’t > realize that I could actually tune above 30MHz directly, although I had not > even tried. > > VY 73! > > Chris Cox, N0UK > chr...@chris.org > > > >> On Nov 13, 2020, at 3:02 AM, Martin wrote: >> >> Chris, >> i'm using a 22MHz I/F for my 432MHz Transverter ( 102.5MHz *4 + 22=432MHz.) >> With the signal on 432, i transmit into a 13cm transverter for QO-100. I >> didn't change anything on my K3 other than buying the Transverter/RX-Antenna >> Board. So , no, it is not required to wideband the K3. >> OTOH, i found there is no 'general coverage' . The specifications drop when >> you move too far off and at a certain point, transmit fails. I suspect this >> also happens to the receive parameters, but you should give it a try. IIRC , >> it IS possible to tune above 30MHz, so you should try a I/F 28-32MHz with >> your 116MHz crystal and see how you get away. >> >> If you modify your transverter anyway , You may want to try a cheap >> solution: Buy a Si5351A Clock Breakout Board or similar. It can be >> programmed to output the frequency you need and i think is even more stable >> than the original crystal which drifts a lot. >> With a miniature computer like a arduino nano or attiny, you can build a >> clock source you can switch 116 / 118 Mhz . Or any other frequency. >> >> Am 13.11.20 um 09:05 schrieb elecraft-requ...@mailman.qth.net: >>> Message: 21 >>> Date: Thu, 12 Nov 2020 16:08:33 -0600 (CST) >>> From: Chris Cox >>> To:elecraft...@groups.io,elecraft@mailman.qth.net >>> Subject: [Elecraft] K3 transverter connector question >>> Message-ID: >>> Content-Type: text/plain; format=flowed; charset=US-ASCII >>> Good day. >>> I am considering recrystalling my 2m transverter with a 118MHz rock >>> replacing the existing 116MHz crystal, thereby permitting full two metre >>> band coverage with a 26-30MHz I/F. >>> Does the K3 need to be widebanded to enable low-level 26-28MHz RF on the >>> transverter transmit port or is the low-level output available by default? >>> -- Chris Cox, N0UK, G4JEC chr...@chris.org >> >> -- >> 73, Martin DM4iM >> __ >> 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 chr...@chris.org > > __ > 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 chr...@chris.org __ 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 transverter connector question
Hi, Martin. Thank you - that is great to hear. I will give that a try and see. I didn’t realize that I could actually tune above 30MHz directly, although I had not even tried. VY 73! Chris Cox, N0UK chr...@chris.org > On Nov 13, 2020, at 3:02 AM, Martin wrote: > > Chris, > i'm using a 22MHz I/F for my 432MHz Transverter ( 102.5MHz *4 + 22=432MHz.) > With the signal on 432, i transmit into a 13cm transverter for QO-100. I > didn't change anything on my K3 other than buying the Transverter/RX-Antenna > Board. So , no, it is not required to wideband the K3. > OTOH, i found there is no 'general coverage' . The specifications drop when > you move too far off and at a certain point, transmit fails. I suspect this > also happens to the receive parameters, but you should give it a try. IIRC , > it IS possible to tune above 30MHz, so you should try a I/F 28-32MHz with > your 116MHz crystal and see how you get away. > > If you modify your transverter anyway , You may want to try a cheap solution: > Buy a Si5351A Clock Breakout Board or similar. It can be programmed to output > the frequency you need and i think is even more stable than the original > crystal which drifts a lot. > With a miniature computer like a arduino nano or attiny, you can build a > clock source you can switch 116 / 118 Mhz . Or any other frequency. > > Am 13.11.20 um 09:05 schrieb elecraft-requ...@mailman.qth.net: >> Message: 21 >> Date: Thu, 12 Nov 2020 16:08:33 -0600 (CST) >> From: Chris Cox >> To:elecraft...@groups.io,elecraft@mailman.qth.net >> Subject: [Elecraft] K3 transverter connector question >> Message-ID: >> Content-Type: text/plain; format=flowed; charset=US-ASCII >> Good day. >> I am considering recrystalling my 2m transverter with a 118MHz rock >> replacing the existing 116MHz crystal, thereby permitting full two metre >> band coverage with a 26-30MHz I/F. >> Does the K3 need to be widebanded to enable low-level 26-28MHz RF on the >> transverter transmit port or is the low-level output available by default? >> -- Chris Cox, N0UK, G4JEC chr...@chris.org > > -- > 73, Martin DM4iM > __ > 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 chr...@chris.org __ 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 transverter connector question
Good day. I am considering recrystalling my 2m transverter with a 118MHz rock replacing the existing 116MHz crystal, thereby permitting full two metre band coverage with a 26-30MHz I/F. Does the K3 need to be widebanded to enable low-level 26-28MHz RF on the transverter transmit port or is the low-level output available by default? -- Chris Cox, N0UK, G4JEC chr...@chris.org __ 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] K4 vs. K4D Question
Terry, I could use your self-description by adding "used to" in the context of contests (I'm up to 297 confirmed and contest opportunities for the rest are slim to none). Then I'd add: "lives on tiny urban/city lot surrounded by both horrible QRM and hills." My antennas were as you describe: a 2-el 5-band beam up a whopping 30 feet, and a wire running through and around trees like a demented pretzel at that same height. And you're right, while diversity thrives on differences, it doesn't thrive on THOSE differences. In my quest for DXCC on 40 and 80, I'd added a pair of DXE active receive verticals and noise canceller in a failed attempt to phase my way through the s5-s6 noise wall - there were far too many noise sources for cancellation to be effective. So I was left with a receive antenna that didn't work all that well in noise-hell, either. Then, after letting it sit mostly unused for 6 months, I tried diversity reception. Wow. When you're working down near the noise, QSB can kill many a QSO. But even with my minimal antennas, the way signals "float" as the RF rotates through polarizations is remarkable to hear: a signal that would otherwise be lost often comes up in one ear just as it drops in the other... I recently worked VK6LW when he was unreadable on either the long-wire or the receive ant, but was readable with diversity turned on. It sometimes seems like the difference between mono and stereo music. Anyway, diversity reception was unquestionably the key to 80M DXCC from this QTH. Point is: if my K3 hadn't already had that second receiver, it's unlikely I would have added one just to try. So if you can swing the cash - like a good scout: "be prepared." 73 Chris NW6V Terry N7TB said: > > From: > >1. I am predominantly a CW operator > 2. I do enjoy working DX contests, but as a hunt and pounce guy, just > looking for countries I may have not worked before. I am not a serious > contester trying for points and awards. > 3. For non-dx contests, I operate at or near QRP levels to see how > well > I am getting out on my antennas. > 4. I am predominantly a rag chewer on CW, or casual operator for > regular CW QSO's. > 5. I have two antennas, one a Yagi for 20, 17, 15, 12, and 10 meters. > The other is an EFHW for 30 (with tuner) 40 and 80. > > I am not sure diversity receive would be all that useful with such > different > antennas. > > __ 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] K4 Pricing Posted
Another way of looking at this is through the lens of history and inflation. In 1969 a set of Drake twins (R-4B, T-4XB, MS-4, AC-4) cost $1149.85 (in the 1969 Lafayette Radio catalog). That translates to $8136.60 in 2020. I daresay that the K4's features and performance are just a tad bit better. ;-) 73, Chris, W2PA __ 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] KX3 Tx Inhibit CW-VOX problem
Having solved the need for getting +Ve Tx Inhibit working on my KX3/10GHz Transverter integration using a MOSFET switch to invert the logic level coming from the 10GHz transverter and configured the KX3 for 0v Tx Inhibit, I had the opportunity to test it out yesterday afternoon. The solution seemed to work fine on SSB but I now have a weird issue when using the rig on CW. If I manually select transmit with the microphone PTT (didn’t try the XMIT key) and then wait for the transverter sequencing to remove Tx Inhibit and then key CW with the paddles, the system works as desired. If I key the system using CW VOX, the Tx Inhibit functions correctly, fully disabling the transmitter from producing RF until TxInhibit is removed by the transverter’s sequencing logic BUT then the CW sidetone becomes permanently on from the moment TXInh disappears, regardless of whether I am keying or not. It stays present until I press any of the buttons on the KX3. This happens regardless of which band is enabled, but occurs whenever TxInhibit is initially present. If I remove the TXInh fro the ACC2 GPIO input (but leave the option enabled in the KX3 config) the rig operates normally under VOX control. Can anyone else replicate this oddball behavior? It seems to be a firmware bug. I have tried removing power from the KX3 but that does not correct the anomalous behavior. Again, all works just fine if I don’t try to key the paddles before PTT sequencing has changed over. Chris Cox, N0UK Chris Cox, N0UK chr...@chris.org __ 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] Continuing saga with Tx Inhibit and the KX3 - possible firmware bug?
Having solved the need for getting +Ve Tx Inhibit working on my KX3/10GHz Transverter integration using a mosfet switch to invert the signal and configured the KX3 for 0v Tx Inhibit, I had opportunity to test it out this afternoon. The solution seemed to work fine on SSB but I now have a weird issue when using the rig on CW. If I manually select transmit with the microphone PTT and then wait for the transverter sequencing to remove Tx Inhibit and then key CW with the paddles, the system works as desired. If I key the system using VOX, the Tx Inhibit functions correctly, fully disabling the transmitter from producing RF until TxInhibit is removed BUT the CW sidetone becomes permanently on from the moment TXInh disappears regardless of whether I am sending or not. It stays present until I press any of the buttons on the KX3. This happens regardless of which band is enabled, but occurs whenever TxInhibit is present. If I remove the TXInh fro the GPIO input (but leave the option enabled in the KX3 config) the rig operates normally. Can anyone else replicate this oddball behavior? It seems to be a firmware bug. I have tried removing power but that does not alter the effect. Again, all works just fine if I don’t try to key the paddles before PTT sequencing has changed over. Chris Cox, N0UK chr...@chris.org __ 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] KX3 ACC2 GPIO
Just as final follow up, a mosfet switch worked for my requirements perfectly. 73! Chris Cox, N0UK chr...@chris.org or chr...@britishcaranddriver.com > On Aug 31, 2020, at 18:26, Chris Cox wrote: > > I’ve thought the problem through further and have decided to use a simple > mosfet switch in the connector shell to invert the TXInh logic sense and > configure the KX3 for -TXInh instead of +TXInh. > > Hard switching the GPIO pin showed that to be a usable workaround. > > 73! Chris Cox, N0UK > chr...@chris.org or chr...@britishcaranddriver.com > > >> On Aug 31, 2020, at 12:51, Chris Cox, N0UK wrote: >> >> I wish to interface my KX3 to my portable 10GHz transporter system. I have >> the transporter’s PTT sequencer configured to output a +ve TX Inhibit signal >> which I have been using to prevent my current I/F rig from transmitting >> until all relays have changed over to transmit. The current rig is a Yaesu >> FT-817. >> >> I want to be able to simply switchover the PTT/TXInh cable between the two >> rigs, so that I can continue using the ‘817 as a backup in the event of some >> problem with the KX3, and so was intending to us the KX3’s ACC2 GPIO TX Inh >> +ve input just as I do the 817. >> >> However, it seems that the KX3 actually has some bias applied that requires >> to be pulled low to enable the transmitter, rather than looking for removal >> of the +ve signal. This will mean that I need more than to simple switch >> over the physical connectors on the umbilical cable. Although not >> insurmountable, it’s not exactly ideal. >> >> Anyone else done this or similar and, if so, what was your solution? >> >> 73 Chris >> >> >> Chris Cox, N0UK >> chr...@chris.org >> __ 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] KX3 ACC2 GPIO
I’ve thought the problem through further and have decided to use a simple mosfet switch in the connector shell to invert the TXInh logic sense and configure the KX3 for -TXInh instead of +TXInh. Hard switching the GPIO pin showed that to be a usable workaround. 73! Chris Cox, N0UK chr...@chris.org or chr...@britishcaranddriver.com > On Aug 31, 2020, at 12:51, Chris Cox, N0UK wrote: > > I wish to interface my KX3 to my portable 10GHz transporter system. I have > the transporter’s PTT sequencer configured to output a +ve TX Inhibit signal > which I have been using to prevent my current I/F rig from transmitting until > all relays have changed over to transmit. The current rig is a Yaesu FT-817. > > I want to be able to simply switchover the PTT/TXInh cable between the two > rigs, so that I can continue using the ‘817 as a backup in the event of some > problem with the KX3, and so was intending to us the KX3’s ACC2 GPIO TX Inh > +ve input just as I do the 817. > > However, it seems that the KX3 actually has some bias applied that requires > to be pulled low to enable the transmitter, rather than looking for removal > of the +ve signal. This will mean that I need more than to simple switch > over the physical connectors on the umbilical cable. Although not > insurmountable, it’s not exactly ideal. > > Anyone else done this or similar and, if so, what was your solution? > > 73 Chris > > > Chris Cox, N0UK > chr...@chris.org > __ 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] KX3 ACC2 GPIO
Thanks all - hopefully it now knows what a transverter is. Chris Cox, N0UK chr...@chris.org > On Aug 31, 2020, at 1:31 PM, Raymond Sills wrote: > > HI Chris: > > You have to "teach" the dictionary to understand that transverter is a real > word. For whatever reason, I must have done that at some time, since I can > have transporter and transverter in the same sentence with this iMac. > > But we knew what you meant, even if the Mac didn't. :) > > 73 de Ray > > > > > -Original Message- > From: Chris Cox, N0UK > To: elecraft...@groups.io; elecraft@mailman.qth.net > Sent: Mon, Aug 31, 2020 1:53 pm > Subject: Re: [Elecraft] KX3 ACC2 GPIO > > And why does my Mac ALWAYS rewrite TRANSVERTER as TRANSPORTER?! > > Chris Cox, N0UK > chr...@chris.org > > > > > On Aug 31, 2020, at 12:50 PM, Chris Cox, N0UK wrote: > > > > I wish to interface my KX3 to my portable 10GHz transporter system. I have > > the transporter’s PTT sequencer configured to output a +ve TX Inhibit > > signal which I have been using to prevent my current I/F rig from > > transmitting until all relays have changed over to transmit. The current > > rig is a Yaesu FT-817. > > > > I want to be able to simply switchover the PTT/TXInh cable between the two > > rigs, so that I can continue using the ‘817 as a backup in the event of > > some problem with the KX3, and so was intending to us the KX3’s ACC2 GPIO > > TX Inh +ve input just as I do the 817. > > > > However, it seems that the KX3 actually has some bias applied that requires > > to be pulled low to enable the transmitter, rather than looking for removal > > of the +ve signal. This will mean that I need more than to simple switch > > over the physical connectors on the umbilical cable. Although not > > insurmountable, it’s not exactly ideal. > > > > Anyone else done this or similar and, if so, what was your solution? > > > > 73 Chris > > > > > > Chris Cox, N0UK > > chr...@chris.org > > > > __ > > 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 chr...@chris.org > > > __ > 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 raysil...@verizon.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] KX3 ACC2 GPIO
And why does my Mac ALWAYS rewrite TRANSVERTER as TRANSPORTER?! Chris Cox, N0UK chr...@chris.org > On Aug 31, 2020, at 12:50 PM, Chris Cox, N0UK wrote: > > I wish to interface my KX3 to my portable 10GHz transporter system. I have > the transporter’s PTT sequencer configured to output a +ve TX Inhibit signal > which I have been using to prevent my current I/F rig from transmitting until > all relays have changed over to transmit. The current rig is a Yaesu FT-817. > > I want to be able to simply switchover the PTT/TXInh cable between the two > rigs, so that I can continue using the ‘817 as a backup in the event of some > problem with the KX3, and so was intending to us the KX3’s ACC2 GPIO TX Inh > +ve input just as I do the 817. > > However, it seems that the KX3 actually has some bias applied that requires > to be pulled low to enable the transmitter, rather than looking for removal > of the +ve signal. This will mean that I need more than to simple switch > over the physical connectors on the umbilical cable. Although not > insurmountable, it’s not exactly ideal. > > Anyone else done this or similar and, if so, what was your solution? > > 73 Chris > > > Chris Cox, N0UK > chr...@chris.org > > __ > 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 chr...@chris.org __ 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] KX3 ACC2 GPIO
I wish to interface my KX3 to my portable 10GHz transporter system. I have the transporter’s PTT sequencer configured to output a +ve TX Inhibit signal which I have been using to prevent my current I/F rig from transmitting until all relays have changed over to transmit. The current rig is a Yaesu FT-817. I want to be able to simply switchover the PTT/TXInh cable between the two rigs, so that I can continue using the ‘817 as a backup in the event of some problem with the KX3, and so was intending to us the KX3’s ACC2 GPIO TX Inh +ve input just as I do the 817. However, it seems that the KX3 actually has some bias applied that requires to be pulled low to enable the transmitter, rather than looking for removal of the +ve signal. This will mean that I need more than to simple switch over the physical connectors on the umbilical cable. Although not insurmountable, it’s not exactly ideal. Anyone else done this or similar and, if so, what was your solution? 73 Chris Chris Cox, N0UK chr...@chris.org __ 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] RE Alexmic
I suppose an off list email address would help. ve3xkz at gmail dot com. Thanks 73 Chris VE3XKZ __ 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] Wanted to buy, an Alexmic
Well after searching the world for a Alexmic to buy, new or used. I have realized this list is my last hope. Alex has told me he doesn't expect to get anymore and all online NA stores have no stock except RadioHaus.com which is not replying to my inquiries, but lists them as for sale. Also There is also a German online store selling these but the price in EU currency for the item, shipping and exchange is, well... ridiculous. So anyone in North America who would like to sell theirs I would accept. It would need to be shipped to Canada and I will pay a US seller in USD via paypal or whatever and pay for shipping of course. Thanks 73 VE3XKZ Chris __ 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] KX2 to Tentec 418 amplifier
I recently acquired a KX2 and love it. I also have a Tentec 418 100W amplifier that I want to find a way to interface them for keying and band-changing. Keying seems easy and straightforward, but the question is if there is an easy way for band-changing. I appreciate it if you share how you have done this. Best 73, Chris KM1B __ 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] KAT500 Remote software and KPA500 remote software
"Once you turn it OFF with the front panel switch, it needs to be turned on the same way. After that, yes the utility is fully functional." I suspect the serial connection is getting confused and not properly reconnecting in the power up/down situation. I see that between the K3 and the Win4K3 suite frequently. If I power down the K3 I usually need to restart the computer to get all the serial connections talking again. This could well be an artifact of the specific serial connectors used. PRoblems with one band of chip versus another are a constant source of conversation. As per the engineers and the experience of others, the behavior you're seeing is not part of the design per se. 73 Chris NW6V __ 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] Self-fusing liquid electrical tape
Right sir I understand. I just mean I don't have large towers and big antennas. Just want be protected since we are up high. Chris > On Jun 5, 2020, at 1:09 PM, Jim Brown wrote: > > On 6/5/2020 10:23 AM, Chris Waldrup wrote: >> This is probably overkill for QRP but I wanted to do it right like we used >> to do in broadcast. > > The primary purpose of grounding bonding has NOTHING to do with radio -- it's > for LIGHTNNG PROTECTION! > > > On 6/5/2020 10:46 AM, Walter Underwood wrote: > > Cad-weld seems a easier than the other approach described. It is more > > robust against corrosion, plus it is fun. > > Yes, it certainly is fun! I summoned my XYL and the neighbor's kid to watch. > :) > > 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 > Message delivered to kd4...@gmail.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] Self-fusing liquid electrical tape
I meant to add I couldn't get the shots to fire with the sparking tool I purchased so I ran down to a fireworks store and purchased a box of sparklers. They do a ***fantastic*** job at ignition. Then when you're done after things cool a few gentle taps with a hammer breaks off the thin ceramic form and you're good to go. Chris KD4PBJ > On Jun 5, 2020, at 12:23 PM, Chris Waldrup wrote: > > Hi Phil, > > I use Erico One Shot cad welds on my workshop grounding system. Everything is > tied together with cad welded bare 6 AWG and I have 8 foot ground rods, > although I had to drive them in at an angle. Our house is on top of a > mountain in TN and soil depth varies from probably 6 ft deep to exposed rock > in certain parts of the property. This is probably overkill for QRP but I > wanted to do it right like we used to do in broadcast. > > Chris > KD4PBJ > >>> On Jun 5, 2020, at 10:19 AM, Phil Kane wrote: >>> >>> On 6/4/2020 8:50 PM, Ed Tanton wrote: >>> >>> I should have mentioned that. I strip 5 or 6 inches of insulation. That >>> was why I cleaned the top of the ground rod and sprayed it with >>> electrical lubricant. I used a stainless steel hose clamp to hold the >>> stripped wires against the ground rod at each end of the stripped wire >>> portions. The next part is what I wrote about to start with. >> >> Thank you for explaining that. For our commercial and public safety >> communication site grounding systems our firm insists on cad-weld at all >> exposed and buried connection points but I would suspect that very few >> hams, let alone residential or even commercial electricians, would go to >> that length. My mentor in that area, the late Tom Croda, who during his >> lifetime was the national expert in comm site power and grounding, would >> not settle for anything less. >> >> 73 de K2ASP - Phil Kane >> Elecraft K2/100 s/n 5402 >> >> From a Clearing in the Silicon Forest >> Beaverton (Washington County) Oregon >> __ >> 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 kd4...@gmail.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] Self-fusing liquid electrical tape
Hi Phil, I use Erico One Shot cad welds on my workshop grounding system. Everything is tied together with cad welded bare 6 AWG and I have 8 foot ground rods, although I had to drive them in at an angle. Our house is on top of a mountain in TN and soil depth varies from probably 6 ft deep to exposed rock in certain parts of the property. This is probably overkill for QRP but I wanted to do it right like we used to do in broadcast. Chris KD4PBJ > On Jun 5, 2020, at 10:19 AM, Phil Kane wrote: > > On 6/4/2020 8:50 PM, Ed Tanton wrote: > >> I should have mentioned that. I strip 5 or 6 inches of insulation. That >> was why I cleaned the top of the ground rod and sprayed it with >> electrical lubricant. I used a stainless steel hose clamp to hold the >> stripped wires against the ground rod at each end of the stripped wire >> portions. The next part is what I wrote about to start with. > > Thank you for explaining that. For our commercial and public safety > communication site grounding systems our firm insists on cad-weld at all > exposed and buried connection points but I would suspect that very few > hams, let alone residential or even commercial electricians, would go to > that length. My mentor in that area, the late Tom Croda, who during his > lifetime was the national expert in comm site power and grounding, would > not settle for anything less. > > 73 de K2ASP - Phil Kane > Elecraft K2/100 s/n 5402 > > From a Clearing in the Silicon Forest > Beaverton (Washington County) Oregon > __ > 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 kd4...@gmail.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] "2" or "3" Paddle
Hiya Tommy. I own both the KXPD2 and KXPD3 and strongly prefer the KXPD2. The KXPD3 was bought at the same time as my KX3 and served well for several years. However I never "liked" it - found it clunky to send on and the sharp edge of the paddles bit into my fingers, so I was on the lookout... Then I tried the KPXPD2 at SeaPAC - and bought one on the spot. I have never used the KXPD3 again. As a point of reference, here in the home shack my preferred sending implements are not paddles at all, but Vibroplex Lightning Bugs - of which four sit on my desk as I type this... As always, YMMV :-) 73 Chris NW6V __ 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] scratchs on display
Thanks everyone for all of the great suggestions. -- Chris Cox, N0UK, G4JEC chr...@chris.org __ 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] PX3 acrylic scratch removal
Thanks Alan and Mike for the two suggestions. And, yes Mike, you’re correct about adTHANKSvance! __ 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] PX3 acrylic scratch removal
Can anyone recommend a safe polish or other to aid in buffing out a minor surface scratch on the plastic (Perspex/acrylic?) screen cover on a PX3? inTHANKSadvance Chris, N0UK, G4JEC __ 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 High SWR
I recently moved and set up the same temporary Butternut vertical as I used in my previous restricted HOA location. (When this virus stuff is over and I can get help, a small tower and a decent antenna will be erected). The K3 is factory built and does not have an ATU. I get a 99 high swr reading on every band the antenna is tuned for, I replaced coax and connectors three times. My Rig Expert analyzer shows swr below 2 on the two bands I wish to use, 40m and 20m. In Tune the external P3000 shows swr below 2, however the K3 still shows 99. I’ve looked through the archives and I can’t find the answer I was looking for. (one that didn’t require sending the radio back to the factory). I am hoping for an answer involving pilot error and an easy fix. The movers didn’t handle the radio, I white glove delivered it to the new house myself. I don’t own a dummy load yet, having sold everything but the K3 when I went to an HOA restrictive community for five years. Any help would be appreciated. Chris Pinholster k4...@mac.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] Excel Test
Walter, Bravo!. :-) I'm going to steal this line... :-) 73 Chris NW6V On Tue, 25 Feb 2020 08:09:02 -0800 AM wrote: > > "Turning a PDF back into structured text is like turning hamburger back > into a cow." > > > __ 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] P3 & VGA card
Hi , I have a K3S and P3 with VGA card to run another display and was expecting to see a duplicate of the P3 screen in larger format. It’s true I can see the waterfall and data decode, but not seeing the tx signal status. If this is its limit, I’d probably say the vga card is unnecessary. Running a low cost sdr and the software to drive the K3 from the PC works well though. Vy pleased with the K3S, but a tad disappointed with the P3 TBF. Vy 73 Chris F1rpo __ 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] FS: K3S/10 - $1095 shipped USPS
Calling an upgraded K3 a K3s may be an overstatement, but the price seems pretty good for an upgraded K3s. Chris AD1AD On Thursday, January 9, 2020, Clay Autery wrote: > I'm sure this is just a misunderstanding. No one would intentionally > misrepresent their Elecraft gear in this way. > > There is NO REASONABLE WAY to make a K3 into a K3s... It may be an > upgraded K3, but it can NEVER be a K3s. > > Please correct your listing... :-) > > __ > Clay Autery, KY5G > (318) 518-1389 > > On 01/09/20 12:09, Bart Jahnke wrote: > >> All, >> >> Thinning my heard. >> >> FS: I have too many HF transceivers, and this one is not getting the use >> it >> deserves. Spare to my needs is this Elecraft K3S/10 transceiver, serial >> 5623. This unit was upgraded from a K3/10 to a K3S/10 with the KSYN3A mod >> added - it has the KXV3A transverter I/O interface - and has an IRC 701A >> 400 Hz 8-pole CW filter. Comes with microphone, power cable, and printed >> manual. For those with LDMOS amplifiers, this 12 watt radio has more than >> enough drive. Asking $1095 shipped to any US Postal Address - PayPal >> (friends and family) or USPS Money Order! >> >> See https://swap.qth.com/search-results.php?keywords=w9jj >> osearch=call >> >> 73 Bart W9JJ >> __ >> 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 k...@montac.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 ve3...@gmail.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] KPA1500 RFI on 10 Meters
Scott, I noticed the same thing this last weekend, having not been on 10 much since getting the amp. But I found the noise to be quite variable. It doesn't always occur. When it does, it appears suddenly, out of the blue while operating. Sometimes I could make it go away by turning off the power, waiting a while, then restarting. I also got it to stop a couple of times by sending a single "dit" while in operate mode. Quite strange. I'm trying to get more data but it does seem to be an intermittent thing and hard to replicate. This noise didn't affect any band below 10m but appeared very broad-banded above, using an SDR receiver. 73, Chris, W2PA On 12/14/2019 4:43 PM, K9MA wrote: I guess it just shows how little I've been on 10, but I've had the KPA1500 for over a year now, and I just noticed that when I turn it on, my noise floor on 10 goes up about 3 dB. (And that's from an urban noise floor.) It's pretty flat over much of the band, not typical switching supply noise. Has anyone else experienced this and found a cure? (Other than using the old amp tube.) 73, Scott K9MA __ 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] case for KX3?
Good evening, Mike: I definitely concur with Steve in leaving room to have enough padding on all sides. Just now, I checked as I have an unused Apache 1800. My KX3 would fit; however, there is not enough room for padding on the sides. With the left side of the KX3 almost touching the interior wall, the BNC connector was about half an inch or so from the right wall. The 2800 would have more than enough room. For reference, I keep mine in a Pelican 1200, and there is just enough room for the transceiver, hand mic, and power cable. I hope this helps. 73, Chris, AC4MP > On Nov 9, 2019, at 9:13 PM, Steve Hull wrote: > > I have my KX3 & PX3 in an Apache 3800 and the KXPA100 in a 2800. No > experience with the 1800. In general, the Apache cases offer good > protection and value. I have no idea how well the KX3 fits inside the > 1800, but be sure to leave room for foam on all sides. In fact, I'd > probably suggest the 2800 because that leaves extra room for cables and > other stuff. > > On Sat, Nov 9, 2019, 5:31 PM Mike Maloney wrote: > >> Anyone had experience packing a KX3 in an Apache 1800 waterproof case from >> Harbor Freight? Saw the case today at HF and looked like it would fit >> okay for good transport protection. >> 73, Mike AC5P >> __ >> 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 shull2...@gmail.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 kk4...@gmail.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] 4k monitors for the shack, late 2019
Hi Scott. You wrote "What can people suggest for quasi-affordable *RF-quiet* 4k displays in the 27-40" range?" I'm using an LG 27UD69P that I picked up as open stock at Best-Buy last year and am quite satisfied. It's beautiful. It does have an external PS, and is very happy to run off the same supply as the rest of the rig, as is the Intel NUC PC it's connected to (Tim Duffy of DXE uses these at every position of the K3LR super-station). This was an important consideration because I wanted to be able to run the whole rig, computer and all, off a big ol' 100AH LiPO battery, both for emergency use, and when I wanted to kill all the noise possible when chasing DX down into said noise. I made the change to this configuration last year, before I retired as an IT director, so at the time I had access to a number of DC-driven monitors. This LG was the quietest of the four I tested. One Dell (not 4K) was a hell-hole of RFI... :-) Although this monitor was the "quietest" of the bunch, it was not completely quiet. But. as Jim K9YC noted, I put ferrites on both the HDMI and power lines to eliminate "noticeable" RFI. I say noticeable because I "monitored the monitors" with a panadapter running on a laptop hooked to the station antennas. Once the ferrites were installed on this LG, what remained was but the faintest trace on 12M, *at the antenna, *and that was good enough for me. As another mentioned, the "noticeable" aspect of the RFI is important. If I hold my RFI sniffer (a Kenwood TH-F6 HT) within about a foot of the monitor, oriented at one specific angle, it is still putting out RFI. But since I can't see the RFI at the antenna, that RFI is not impacting my operations: The inverse-square law is reducing the intensity below "noticeable" levels by the time it gets to the antennas, which is all that matters. And that of course is in the context of my background noise levels, which at this city QTH are high (even after extensive mitigation work). So background noise could render this internally generated noise undetectable. But my existing system is sensitive enough to notice the differences among several switching and analog supplies, so I'm satisfied that I'm not overly QRMing myself. So: I suggest testing whatever monitor you select, and buy enough snap-on ferrites and extra-long cables (for enough turns) to filter any remaining RFI. Also, If you can get the monitor at a best-buy or some other place that allows returns without restocking fees, you should be able to find one that fits all your criteria. Please let us all know what you find that works! 73 Chris NW6V __ 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] KX3 fuses
I certainly agree with Don. As I try to keep a modular approach for my equipment, I use Powerpoles on everything. For portable equipment, I created short fused cables from ATC blade fuses (just got them from Walmart or an auto parts store) and some black 12-gauge wire with Powerpoles on both ends. With the Powerpoles, I can use on any cable close to the power source. Hope this helps, Chris, AC4MP > On Oct 15, 2019, at 5:19 PM, Don Wilhelm wrote: > > Terry, > > The KX3 has internal protection, but a fused power lead (only necessary in > the positive lead) provides additional protection. That is important IMHO > when powered by an external battery - there is a lot of energy in a battery, > and if the wire is pinched and shorts, it will spew molten metal. > > Fuse close to the power source, NOT the radio end of the power cable. > > 73, > Don W3FPR > >> On 10/15/2019 12:54 PM, Terry Basom wrote: >> I was looking at my power leads and realaized I had no fuses in the lines. >> The factory power lead as well had no fuses. I'm about to change that with >> inline fuses. >> I would appreciate any comments.. >> __ >> 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 donw...@embarqmail.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 kk4...@gmail.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] September 25th is VAIL Day - The First Telegrapher
Greetings. Wednesday 25 September 2019 is the 212th birthday of Alfred Vail. While Samuel F. B. "Finley" Morse is correctly credited with conceiving and parenting the telegraph as a communication system - the global wired information network and business - the details of how information was to be passed across that network, using human operators, was largely the work of his partner, Alfred Vail. In other words, Morse invented the "electro-magnetic telegraph," but Vail was "The First Telegrapher." Among other things, Vail invented the straight key, the up/down printing register (which first revealed the signals as "dots and dashes"), discovered "copy-by-ear" (listening to the thunking of his printing register), and authored "American Morse" (to increase efficiency and throughput using his keys and printers). Vail may also have invented the original dot-dash alphabet, which was used for some early demonstrations, and was at worst its co-author. I'm writing a book about all that, hoping to pierce the fog of time and render our understanding more clearly. But one thing was abundantly clear: Morse's telegraph was the first "smart device" - made so by the inclusion of the telegrapher's mind as an integral component of the system - performing "copy by ear." This gave it a critical market advantage early on when line quality was terrible, and mechanical reliability poor. As a matter of the greatest irony, until its inevitability was forced upon him by those economic realities, and the weight of telegraphers almost universally practicing it, Morse was strongly opposed to copy-by-ear because it diminished the importance of "permanent printouts," which were a key distinguishing feature of his original invention and the original patents. You see, Morse never imagined copy-by-ear would happen, or that it was important. Vail lived it. So: I'm commemorating Vail's birthday by using a replica of Vail's straight key for all QSOs on the 25th, and I'll be calling "CQ VVV." There's a picture on my QRZ page. The key works well up into the low 20s, but I'm always happy to QRS. Feel free to join in and send some Vs yourself! Hope to work you on the air! Oh, and I'll be using a K3 and KPA500...:-) 73 Chris NW6V __ 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] KX3 remote a K3
It appears not, although I was wondering the same thing. -- 73 Chris Cox, N0UK, G4JEC chr...@chris.org On Mon, 22 Jul 2019, Frank Krozel wrote: > I’m not sure if this is ever been asked before but can a KX3 remotely control > a K3? Off-line responses please de Frank KG9H Sincerely, Frank Krozel t: 1-630-924-1600 fr...@electronicinstrument.com BSEE, AASEET, FCC Lic.# PG-18-19178, KG9H Electronic Instrument Associates - Central, Inc. ...since 1971 w: www.electronicinstrument.com d/l our linecard at http://www.electronicinstrument.com/lc.pdf __ 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 chr...@chris.org__ 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] newsletter error
Hi A minor error in the newsletter article on the WWVB, should be 60kHz. Chris VK2ACD __ 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] KX3 batteries
Will the Bioenno batteries have enough terminal voltage to get the 15W? I'm looking at a 9Ah unit and if so will stop by Gigaparts on the way home from work today and pick one up. Chris KD4PBJ > On Jun 25, 2019, at 9:46 AM, Walter Underwood wrote: > > That may be, though the discharge curves on the data sheets seem very > similar. Note that the two data sheets use different discharge rates, like > 2000 mAh vs 2500 mAh. They both have the same specs for "Internal Impedance > (after discharge to E.V.=1.0V)”: Approx. 25mΩ(at 1KHz). I have to admit that > I have no idea what that means. > > Eneloop: https://eneloop101.com/wp-content/uploads/BK-3MCC-AE.pdf > <https://eneloop101.com/wp-content/uploads/BK-3MCC-AE.pdf> > Eneloop Pro: https://eneloop101.com/wp-content/uploads/2017/02/BK-3HCC.pdf > <https://eneloop101.com/wp-content/uploads/2017/02/BK-3HCC.pdf> > > These are for the latest generation of each. > > wunder > K6WRU > Walter Underwood > CM87wj > http://observer.wunderwood.org/ (my blog) > >> On Jun 25, 2019, at 6:10 AM, Chip Stratton wrote: >> >> I think Eneloop Pro have a higher internal resistance than the regular >> Eneloop. In my experience, using both of them sequentially, the KX3 went >> more quickly to the enforced 5 watt maximum output with the Eneloop Pro >> cells compared to the standard Eneloop, despite the higher ultimate capacity >> of the Eneloop Pro. But, YMMV! >> >> Chip >> AE5KA >> >> On Mon, Jun 24, 2019 at 9:32 PM Walter Underwood > <mailto:wun...@wunderwood.org>> wrote: >> Right, Eneloop Pro get 500 cycles instead of 2000 for regular Eneloop. But >> I’m OK with 500 charge cycles and getting 2550 mAh instead of 2000 mAh. >> >> The Wikipedia page for Eneloop is fairly informative. >> >> https://en.wikipedia.org/wiki/Eneloop <https://en.wikipedia.org/wiki/Eneloop> >> >> wunder >> K6WRU >> Walter Underwood >> CM87wj >> http://observer.wunderwood.org/ <http://observer.wunderwood.org/> (my blog) >> >>> On Jun 24, 2019, at 5:15 PM, Dave Sublette >> <mailto:k4to.d...@gmail.com>> wrote: >>> >>> IIRC, the Eneloop Pro has fewer recharge cycles than do the regular >>> Eneloops. >>> >>> K4TO >>> >>>> On Mon, Jun 24, 2019 at 7:57 PM John Harper >>> <mailto:johna...@gmail.com>> wrote: >>>> >>>> Panasonic Eneloop Pro >>>> >>>>> Best KX3 batteries >>>> >>>>> My old rechargeable batteries are failing. Recommdation for >>>> replacements? >>>> >>>> >>>> John AE5X >>>> https://ae5x.blogspot.com <https://ae5x.blogspot.com/> >>>> __ >>>> Elecraft mailing list >>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>>> <http://mailman.qth.net/mailman/listinfo/elecraft> >>>> Help: http://mailman.qth.net/mmfaq.htm <http://mailman.qth.net/mmfaq.htm> >>>> Post: mailto:Elecraft@mailman.qth.net <mailto:Elecraft@mailman.qth.net> >>>> >>>> This list hosted by: http://www.qsl.net <http://www.qsl.net/> >>>> Please help support this email list: http://www.qsl.net/donate.html >>>> <http://www.qsl.net/donate.html> >>>> Message delivered to k...@arrl.net <mailto:k...@arrl.net> >>>> >>> __ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> <http://mailman.qth.net/mailman/listinfo/elecraft> >>> Help: http://mailman.qth.net/mmfaq.htm <http://mailman.qth.net/mmfaq.htm> >>> Post: mailto:Elecraft@mailman.qth.net <mailto:Elecraft@mailman.qth.net> >>> >>> This list hosted by: http://www.qsl.net <http://www.qsl.net/> >>> Please help support this email list: http://www.qsl.net/donate.html >>> <http://www.qsl.net/donate.html> >>> Message delivered to wun...@wunderwood.org <mailto:wun...@wunderwood.org> >> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> <http://mailman.qth.net/mailman/listinfo/elecraft> >> Help: http://mailman.qth.net/mmfaq.htm <http://mailman.qth.net/mmfaq.htm> >> Post: mailto:Elecraft@mailman.qth.net <mailto:Elecraft@mailman.qth.net>
Re: [Elecraft] KX3 won't go above 10W
Thank you. Gigaparts is local to me and I see they have the Bioennos in stock!! Chris > On Jun 24, 2019, at 4:35 PM, Jim Brown wrote: > >> On 6/24/2019 12:59 PM, Mark Goldberg wrote: >> Go with LiFePO4 cells > > Yes. This ham-friendly company sells a wide range of LiFePO4 batteries. > Charge before you leave home (all Li batteries require a charger designed for > their specific chemistry, voltage, and capacity), connect to your KX2/3 > external power jack. Choose the capacity/weight that suits your planned use. > > $50 will get you 3Ah that weighs 13 oz; add $15 for the charger. A 6Ah > battery goes for $80, approximately twice the weight. I paid about $195 for a > 20Ah battery that weighs 5.4#, +$20 for a faster charger. > > https://www.bioennopower.com/collections/12v-series-lifepo4-batteries > > 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 > Message delivered to kd4...@gmail.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] KX3 won't go above 10W
Yes sir using 7AH gel cell. Just found out the issue as it works to 15W on a bench supply so the issue was pointed out to me by a kind list member that this is intentional limiting while on lower capacity batteries. Chris > On Jun 22, 2019, at 1:16 PM, Scott Manthe wrote: > > Are you using batteries? > > 73, > Scott N9AA > > > On 6/22/19 12:57 PM, Chris Waldrup wrote: >>> Hi, >>> >>> I have a brand new KX3 we are using here at the Knightlites FD event in >>> Raleigh. >>> In pre operations events some of the guys are helping me set up (we are >>> using 5W for the event) but in the future I would like full 15W capability. >>> We can't get it to go above 10W using the power control. >>> Any ideas? >>> Thanks in advance. >>> >>> Chris >>> KD4PBJ >> __ >> 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 scott.man...@gmail.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 kd4...@gmail.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] KX3 won't go above 10W
> > Hi, > > I have a brand new KX3 we are using here at the Knightlites FD event in > Raleigh. > In pre operations events some of the guys are helping me set up (we are using > 5W for the event) but in the future I would like full 15W capability. > We can't get it to go above 10W using the power control. > Any ideas? > Thanks in advance. > > Chris > KD4PBJ __ 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] New K1 Kit
I agree. SMD soldering is actually much faster than through holes because you don't have to trim leads. It is just a matter of getting used to small parts. Magnifying glasses will definitely be necessary for most of us. Reviving K1 with SMD parts will make a very trail-friendly radio. On Thu, Jun 6, 2019 at 1:53 PM James Doty wrote: > SMD soldering is actually pretty easy. It does take a good quality > soldering station to do it though. > > Yes, I need magnification when soldering surface mount components. :) > > __ > 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 ve3...@gmail.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] K2 PLL reference oscillator problems (DAC side!)
Thanks for the detailed reply. That makes sense entirely. To note this K2 shipped in early May so there may be problems still. Best regards, Chris M0XTE On Wed, 29 May 2019, at 14:49, Don Wilhelm wrote: > Chris and all, > > Let me try to add some clarity to this J310 situation: > > 1. Thru-hole J310s have been discontinued. Last August, Elecraft > ordered a new supply (from a new source) which proved to be inadequate > for the K2 PLL Reference Oscillator circuit. A source of New Old Stock > for J310s was sought and finally found. Those parts were received in > January 2019 and the stock that was deficient was scrapped. > 2. So the K2s which were affected were shipped between mid-August 2018 > and January 2019. > Not all J310s shipped during that period were sub-par, some worked fine > while others did not. > > 3. So this problem reared its ugly head on some of the K2s shipped > during that period while others worked fine. > > The problem would show up during the PLL Reference Range Test during > early testing of the K2. Many have been corrected so far, actually I > hope all those which failed have now been corrected - time will tell. > With the current stock of J310s at Elecraft, this problem has been > solved. Warranty support for those K2s exhibiting the problem will be > addressed as the symptoms are revealed. > > The circuit is not to blame. The circuit has been unchanged since the > Field Test K3s and it has worked successfully until this J310 situation > came up. > > There are no new thru-hole J310s being manufactured from the original > manufacturers - SMD J310s have no problems. > > 73, > Don W3FPR > > On 5/29/2019 4:56 AM, Chris Smith wrote: > > Hi, > > > > I have replaced the J310 and the oscillator now runs over the full voltage > > range of the DAC. Many thanks. After this, the PLL calibration routine > > completes successfully. The EEPROM appears to be ok here. > > > > So at a high level the issue appears to be: > > > > 1. The J310 or circuit was at fault. Either the J310 device spread is > > suspect or the circuit is device spread sensitive. Having built a few VXOs > > over the years some problems are almost inevitable here so it's expected > > really. > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2 PLL reference oscillator problems (DAC side!)
Hi, I have replaced the J310 and the oscillator now runs over the full voltage range of the DAC. Many thanks. After this, the PLL calibration routine completes successfully. The EEPROM appears to be ok here. So at a high level the issue appears to be: 1. The J310 or circuit was at fault. Either the J310 device spread is suspect or the circuit is device spread sensitive. Having built a few VXOs over the years some problems are almost inevitable here so it's expected really. 2. The default EEPROM contents without PLL calibration have no calibration data so it's not possible to tune the oscillator down into a running state, not that it'd help potentially based on point 3. 2. The default DAC value of full scale pegs the varactors at full swing resulting in the oscillator not starting. 3. The PLL calibration routine will not run if the oscillator is not running which is fair enough. Diagnostic steps to positively identify the issue: 1. Reset K2 (456+power up) to clear cal data. This will wedge the DAC at full scale. 2. Hook scope/counter to TP3 (internal counter is fine). If there is a signal here at around 12MHz, then the oscillator works. No further diagnostics required. 3. Lift one end of R19 to disconnect the DAC from the PLL oscillator. 4. Hook bench supply to RP2 pin 2 or 4. Set on 0V. 9v battery with 1k pot across it and DMM on wiper terminal will do if you don't have a bench supply. 5. Sweep bench supply across 0-8V and ensure that there is a signal at TP3 across the entire range. 6. If there isn't replace Q19 (J310) and retry until there is oscillation across the entire range. 7. Reinsert and solder lifted end of R19. 8. Complete PLL calibration. As a test, I also tried an NOS On Semiconductor J310 (which arrived the same time as Elecraft's replacement!) and that worked consistently across the board. I have however substituted the Elecraft supplied replacement which matches the On Semi one now as well. Thanks to Don for landing on this issue straight away. Next steps in progress now. Best regards, Chris M0XTE On Tue, 28 May 2019, at 11:22, Chris Smith wrote: > Hi, > > Received replacement J310 and EEPROM today. I will install the J310 this > evening and see where it goes, failing that the EEPROM. > > Big thanks to Don and Elecraft's excellent support. > > Best regards, > > Chris M0XTE > > On Tue, 21 May 2019, at 23:37, Don Wilhelm wrote: > > Chris, > > > > If it is a EEPROM data problem, then a Master Reset should load it with > > default values - hold the 4, 5, and 6 buttons in while turning power on. > > > > I have not found that the EEPROM has been the source of the problem, but > > rather Q19. > > Q19 should oscillate with anywhere between 0 volts and 8 volts on the > > varactors. > > > > Before assuming it is a possible EEPROM problem, add the capacitor I > > indicated and see if it works. You should still replace Q19. > > > > To further check the EEPROM and U5 DAC > > > > On 5/21/2019 1:21 PM, Chris Smith wrote: > > > Hi, > > > > > > Thanks for the reply. Much appreciated. > > > > > > That’s a bummer. Is there anything I can do here with the current EEPROM? > > > I have a programmer available. I assuming erasing it and letting the K2 > > > reinitialise it a small per earlier steps won’t resolve this? > > > > > > Based on looking at it from the outside naively, it feels like theres > > > something up with the VCO linearisation as it’s sending the control word > > > on VFO steps but the same data. I’ll get a bus captures if it helps. > > > > > > Assume that performing the VCO linearisation steps later won’t fix it > > > either? > > > > > > Hope you enjoy your vacation - sounds nice! > > > > > > Best regards, > > > > > > Chris M0XTE > > > > > > On Tue, 21 May 2019, at 18:11, Dave Van Wallaghen wrote: > > >> Chris, > > >> > > >> I have worked on a few late model K2'S of late with the exact same > > >> problem. The folks in support are currently looking into it to determine > > >> the source of the problem. > > >> > > >> My solution was to replace the Control board EEPROM with a known > > >> properly initialized one and everything came back to life. I even > > >> discussed this with Wayne in Dayton. We're looking into whether we have > > >> an EEPROM issue or a possible programming anomaly with the main PIC MCU. > > >> > > >> I'm currently on vacation with my wife 8 miles off the coast of Belize. > > >> I have limited WIFI but will continue to che
Re: [Elecraft] K2 PLL reference oscillator problems (DAC side!)
Hi, Received replacement J310 and EEPROM today. I will install the J310 this evening and see where it goes, failing that the EEPROM. Big thanks to Don and Elecraft's excellent support. Best regards, Chris M0XTE On Tue, 21 May 2019, at 23:37, Don Wilhelm wrote: > Chris, > > If it is a EEPROM data problem, then a Master Reset should load it with > default values - hold the 4, 5, and 6 buttons in while turning power on. > > I have not found that the EEPROM has been the source of the problem, but > rather Q19. > Q19 should oscillate with anywhere between 0 volts and 8 volts on the > varactors. > > Before assuming it is a possible EEPROM problem, add the capacitor I > indicated and see if it works. You should still replace Q19. > > To further check the EEPROM and U5 DAC > > On 5/21/2019 1:21 PM, Chris Smith wrote: > > Hi, > > > > Thanks for the reply. Much appreciated. > > > > That’s a bummer. Is there anything I can do here with the current EEPROM? I > > have a programmer available. I assuming erasing it and letting the K2 > > reinitialise it a small per earlier steps won’t resolve this? > > > > Based on looking at it from the outside naively, it feels like theres > > something up with the VCO linearisation as it’s sending the control word on > > VFO steps but the same data. I’ll get a bus captures if it helps. > > > > Assume that performing the VCO linearisation steps later won’t fix it > > either? > > > > Hope you enjoy your vacation - sounds nice! > > > > Best regards, > > > > Chris M0XTE > > > > On Tue, 21 May 2019, at 18:11, Dave Van Wallaghen wrote: > >> Chris, > >> > >> I have worked on a few late model K2'S of late with the exact same > >> problem. The folks in support are currently looking into it to determine > >> the source of the problem. > >> > >> My solution was to replace the Control board EEPROM with a known properly > >> initialized one and everything came back to life. I even discussed this > >> with Wayne in Dayton. We're looking into whether we have an EEPROM issue > >> or a possible programming anomaly with the main PIC MCU. > >> > >> I'm currently on vacation with my wife 8 miles off the coast of Belize. I > >> have limited WIFI but will continue to check in. > >> > >> Stay tuned... > >> > >> 73, > >> Dave, W8FGU > >> > >> On May 21, 2019 10:28:00 "Chris Smith" wrote: > >> > >>> Hi, > >>> > >>> I've just completed my K2 up to the PLL reference oscillator. > >>> > >>> Initially when I assembled it the PLL reference oscillator would not > >>> oscillate at all. No reading on internal counter. I popped it on my > >>> external Racal counter and still dead. After tracing the problem out I > >>> found that the voltage on input to the varactors was pegged at 7.07V > >>> which was too high for the oscillation to carry on. I lifted one end of > >>> R19 on the output of U6A and the thing oscillates fine isolating this to > >>> a control voltage problem. > >>> > >>> Next I checked voltages on the thermistor board and input of the opamp. > >>> All good. However the input to U6A pin 3 from the LTC1451 DAC is stuck at > >>> 4.095V (top end of DAC range by the looks of it) which is forced up by > >>> the opamp. Popped U5 DIN on the scope and spun the VFO and it sends the > >>> same data word to the DAC every time regardless of VFO position. The CLK > >>> and CS lines are doing their thing correctly. > >>> > >>> Anyone got any ideas why the control word is the same? VFO reading on > >>> display is changing fine. > >>> > >>> What can I do to get out of this hole? > >>> > >>> Any help appreciated. > >>> > >>> Best regards, > >>> > >>> Chris M0XTE > >>> __ > >>> Elecraft mailing list > >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft > >>> Help: http://mailman.qth.net/mmfaq.htm > >>> Post: mailto:Elecraft@mailman.qth.net > >>> > >>> This list hosted by: http://www.qsl.net > >>> Please help support this email list: http://www.qsl.net/donate.html > >> > > __ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft@mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KX2 & FT8
Hello Group. I am a fairly new Elecraft and KX2 user. Long story short would any KX2 geniuses be willing to share their radio settings for FT8 with me. I am using WSJT-X and understand setting and operation of it with my 7300. I just need help with KX2 radio settings. I am setting up a small ASUS Zenbook with KX2 for portable FT8 operation will take it with me to VK2 land in a couple weeks so I can FT8 over there. I hear lots of warbling on the FT8 frequencys through the radio.Is Data A the correct mode to use? . I have CAT control to the radio and with the mike and speaker cable connected hear warbling from PC speakers. WJST-X settings are nominal also Unless there are secret KX2 WSJT-X setting. Maybe there will be a FT8 setting in the next firmware release. nudge nudge. Thank You 73 ChrisVE3XKZ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2 PLL reference oscillator problems (DAC side!)
Hi, That makes sense. I assume this is a bootstrap problem then i.e. the J310 has to be oscillating in the default state before the VCO linearisation can run and set up the LUT inside the EEPROM. Making a large assumption there of course as I can't see the source code! I tried the 10pF trick from another thread that you mentioned before after researching this issue and unfortunately that didn't start the oscillation. I did some experiments and will complete one more: Experiment 1 Did a hard reset (456+power up) to see if it reset the data. It showed the initialisation info message. FAIL Experiment 2 I just checked the VXO range by pulling R19 and using another bench supply. The thing gives a relatively reliable 3v p-p until the varactor control voltage hits 6.8V then it stalls. Obviously as DAC output eventually ends up at 7.07V it's game over straight up. Experiment 3 If I leave R19 lifted and run the PLL cal it doesn't throw info 232 straight away but appears to hang, probably because there's no control voltage doing anything which is hopeful if it works how I think it does! Experiment 4 (in progress) I'm going to put a J309 in (I don't have any spare J310s I don't think and this is same FET but binned with different Idss) and see if it oscillates across the full range. I will then run PLL cal. If that works then it'll at least clarify first assumption. I checked /DAC2CS and it does indeed go low during the load operation. The issue is the control data sent to the DAC is the same. Thanks for your help. Some ideas to try! Best regards, Chris On Tue, 21 May 2019, at 19:05, Don Wilhelm wrote: > Chris, > > If your kit was shipped between mid-August 2018 and mid-January 2019, > then the most likely problem is that Q19 should be replaced with a new > J310 from Elecraft. > > As for the 7.07 volts from U6A pin 1, that is not necessarily the cause > of the problem (Q19 should oscillate even with almost 8 volts from U6 > pin 1) - if it does not, then the problem is Q19. > > While waiting for a replacement J310 from Elecraft, try putting a small > value capacitor from the source of Q19 to ground - use 10 to 15pF. Then > measure the PLL Reference oscillator range using the counter probe in > TP3 and entering CAL FCTR in the menu. You should have oscillation at > both the low (BAND-) and high (BAND+) and the frequency of the high end > should be near 12100 kHz. > > Another potential problem if the voltage on U5 pin 7 (and as a result U6 > pin 1) can be that the /DAC2CS input to U5 pin 3 is always at or near > ground - check for that condition, and if present, find the solder > bridge. That signal line should go to ground as you rotate the VFO, but > otherwise should be at 5 volts. You will need an oscilloscope to see > the negative transitions. > > 73, > Don W3FPR > > On 5/21/2019 12:27 PM, Chris Smith wrote: > > Hi, > > > > I've just completed my K2 up to the PLL reference oscillator. > > > > Initially when I assembled it the PLL reference oscillator would not > > oscillate at all. No reading on internal counter. I popped it on my > > external Racal counter and still dead. After tracing the problem out I > > found that the voltage on input to the varactors was pegged at 7.07V which > > was too high for the oscillation to carry on. I lifted one end of R19 on > > the output of U6A and the thing oscillates fine isolating this to a control > > voltage problem. > > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2 PLL reference oscillator problems (DAC side!)
Hi, Thanks for the reply. Much appreciated. That’s a bummer. Is there anything I can do here with the current EEPROM? I have a programmer available. I assuming erasing it and letting the K2 reinitialise it a small per earlier steps won’t resolve this? Based on looking at it from the outside naively, it feels like theres something up with the VCO linearisation as it’s sending the control word on VFO steps but the same data. I’ll get a bus captures if it helps. Assume that performing the VCO linearisation steps later won’t fix it either? Hope you enjoy your vacation - sounds nice! Best regards, Chris M0XTE On Tue, 21 May 2019, at 18:11, Dave Van Wallaghen wrote: > Chris, > > I have worked on a few late model K2'S of late with the exact same problem. > The folks in support are currently looking into it to determine the source of > the problem. > > My solution was to replace the Control board EEPROM with a known properly > initialized one and everything came back to life. I even discussed this with > Wayne in Dayton. We're looking into whether we have an EEPROM issue or a > possible programming anomaly with the main PIC MCU. > > I'm currently on vacation with my wife 8 miles off the coast of Belize. I > have limited WIFI but will continue to check in. > > Stay tuned... > > 73, > Dave, W8FGU > > On May 21, 2019 10:28:00 "Chris Smith" wrote: > >> Hi, >> >> I've just completed my K2 up to the PLL reference oscillator. >> >> Initially when I assembled it the PLL reference oscillator would not >> oscillate at all. No reading on internal counter. I popped it on my external >> Racal counter and still dead. After tracing the problem out I found that the >> voltage on input to the varactors was pegged at 7.07V which was too high for >> the oscillation to carry on. I lifted one end of R19 on the output of U6A >> and the thing oscillates fine isolating this to a control voltage problem. >> >> Next I checked voltages on the thermistor board and input of the opamp. All >> good. However the input to U6A pin 3 from the LTC1451 DAC is stuck at 4.095V >> (top end of DAC range by the looks of it) which is forced up by the opamp. >> Popped U5 DIN on the scope and spun the VFO and it sends the same data word >> to the DAC every time regardless of VFO position. The CLK and CS lines are >> doing their thing correctly. >> >> Anyone got any ideas why the control word is the same? VFO reading on >> display is changing fine. >> >> What can I do to get out of this hole? >> >> Any help appreciated. >> >> Best regards, >> >> Chris M0XTE >> __ >> 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] K2 PLL reference oscillator problems (DAC side!)
Hi, I've just completed my K2 up to the PLL reference oscillator. Initially when I assembled it the PLL reference oscillator would not oscillate at all. No reading on internal counter. I popped it on my external Racal counter and still dead. After tracing the problem out I found that the voltage on input to the varactors was pegged at 7.07V which was too high for the oscillation to carry on. I lifted one end of R19 on the output of U6A and the thing oscillates fine isolating this to a control voltage problem. Next I checked voltages on the thermistor board and input of the opamp. All good. However the input to U6A pin 3 from the LTC1451 DAC is stuck at 4.095V (top end of DAC range by the looks of it) which is forced up by the opamp. Popped U5 DIN on the scope and spun the VFO and it sends the same data word to the DAC every time regardless of VFO position. The CLK and CS lines are doing their thing correctly. Anyone got any ideas why the control word is the same? VFO reading on display is changing fine. What can I do to get out of this hole? Any help appreciated. Best regards, Chris M0XTE __ 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] KPA1500 AC Mains wire colours
Sorry, I'm not being pedantic but standard US home supply is NOT two phaes plus ground, it is still single phase 120-0-120 Vac with the 0 volt being grounded and tied to the neutral line for each of the two anti-phase hot lines. The power is distributed around the area as three phase and each of those three phases is then typically split between three properties at the outdoor powerpole. -- 73 Chris Cox, N0UK, G4JEC chr...@chris.org On Sat, 18 May 2019, Jim Brown wrote: > On 5/18/2019 4:28 PM, Clay Autery wrote: > > 230VAC on 3 wires? Never knew they did 3 wire 220V I always > > assumed it was still 2 hots and ground (plus an optional neutral). > > Two hots (phases) and ground is three wires. Single-phase power normally > comes into a building in North America as two phases and a neutral. We > connect a 240V load between the two phases, and a 120V load between one > phase and a neutral. It's not unusual to feed a sub-panel with both > phases, neutral, and ground so that the panel can feed both 120V and > 240V loads. The key here is that loads must NEVER be connected between a > phase and ground, ALWAYS between phases or between phase and neutral. > > You probably know that EU runs on 230/240V, wired phase, neutral, and > ground. > > 73, Jim K9YC > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html__ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K2 encoder (new version) fitting problem and solution
Hi all, First post so hello. Currently building my first Elecraft product, a K2. Got to the encoder assembly and tripped over a bit of a problem. The encoder would not sit flat in the hole in the front panel as the hole is actually only very slightly smaller than the encoder's shaft. I've seen another post mentioning this and reaming out the panel as a solution which was a no for me as it firstly wrecks the nice paint job and secondly makes the knob poke out too far. I sat for a bit and thought and then dug through the junk box and found a ~1.8mm thick M10 washer (10.05mm internal diameter). I used a cheap Noga deburring tool to widen this out to 10.4mm. This now sits over the metal sleeve on the encoder (not on the plastic body - never do this!) and allows it to sit flat in the front panel without rocking and be tightened down without damage. The encoder board does not foul the control board either. Cruddy MS Paint cross section: https://m0xte.uk/pub/k2-encoder-mount.png Hope someone finds this useful. Chris M0XTE __ 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] XV144 ATF34143 phemt equivalent
Hi Don, I had thought about it, but it's a long way to send it and figured i should be able to find something more local. The Doc's suggested an equivalent which I can get ( I'll get a few just in case), so will give it a go and see if fixes it. It certainly down on sensitivity, my IC7400 is better on 2m at the moment. Thank you for the quick response, very much appreciated. Vy 73 Chris G1rpo Sent from my iPad > On 22 Apr 2019, at 03:51, Don Wilhelm wrote: > > Chris, > > Have you tried ordering the part from Elecraft? I am assuming they still > have some in stock. Email to pa...@elecraft.com with the part number and > description and you should receive a return email with the cost. That will > allow you to use the Quick Order form on the website to order and complete > the purchase. > > 73, > Don W3FPR > >> On 4/21/2019 7:07 PM, Chris Reed wrote: >> Hi all, >> The ATF34143 Phemt used on the rx input is discontinued and I just wondered >> what the suggested replacement would be for this little gremlin. I've Just >> purchased a second hand XV144 and I'm not getting any variation when I >> adjust c1 and it looks like the 34143 has already been changed looking at >> the state of the solder. >> Any guidance would be much appreciated. >> ATB >> Chris >> G1rpo __ 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
