Re: [Elecraft] OT: The day I found out I was going to be an engineer
One of my favorite Dilbert videos - when mom discovers her son has "the knack"." https://www.youtube.com/watch?v=Zee9HV7c11E -larry (K8UT) -- Original Message -- From "Nate Bargmann" To elecraft@mailman.qth.net Date 9/16/2023 22:09:44 Subject Re: [Elecraft] OT: The day I found out I was going to be an engineer * On 2023 16 Sep 13:24 -0500, jerry wrote: On 2023-09-15 17:31, Wayne Burdick wrote: > I was 8 years old. *** I've been trying to interest my 9 year old in electronics & radio. Am leveraging his love for making things. Which mostly is alas focused on Legos. Don't push too hard. Even though dad fixed some TVs up until I was six or seven, I didn't gain an interest in electronics until after high school at age 17. As a youth I had Lego, Tinker Toys, and Erector Sets. All were educational in various ways. Exposure to various hands-on things will let him find what he likes. Even simple computer programming will be beneficial. 73, Nate, N0NB -- "The optimist proclaims that we live in the best of all possible worlds. The pessimist fears this is true." Web: https://www.n0nb.us Projects: https://github.com/N0NB GPG fingerprint: 82D6 4F6B 0E67 CD41 F689 BBA6 FB2C 5130 D55A 8819 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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...@charter.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] RFE KPA1500 FAN PROFILE
>external solution FANticipator ... but this requires a computer with wifi FANticipator does not require WiFi, merely a computer on the LAN - ethernet or WiFi. The only additional connection is ethernet to the KPA1500. https://hamprojects.info/fanticipator-kpa1500-console-and-fan-controller/ -larry (K8UT) -- Original Message -- From: "eric norris via Elecraft" To: "elecraft@mailman.qth.net" Sent: 8/28/2022 7:20:08 AM Subject: [Elecraft] RFE KPA1500 FAN PROFILE May I suggest adding a command that allows users to select the more aggressive 6m fan profile on the KPA1500 for HF use? Call it, for example, FP6; to revert back to the normal HF profile, say FPD. These could then be loaded into FP1 and FP2--We could select the best profile for the current op. 6m ops are unaffected. Digital users would find a cooler running amp for RTTY and FT8, for example, as well as slow-speed CW ops and K4 users pushing the fabulous CESSB feature, which does create a hotter running KPA. My experiments show that just running the fans at FAN1 or FAN2 do not create sufficient airflow as the amp heats up. Running at FAN3 keeps things cool, but can create large swings in neatsink temps during rx periods.. It also irritates the XYL, and makes copy more difficult, even with Radiosport, Heil, or Bose QC-35 noise-cancelling heatsets Likewise, experimenting with FAN DWELL did not solve the issue. There is an external solution, FANticipator, but this requires a computer with wifi, and a LAN connection to the KPA1500--more stuff that needs to work and be turned on. FANticipator does very effectively lower PA temps AND fan noise. I think the FP6 command will also help with noise and temps. The advantage of implementing my suggestion is that it does not affect KPA1500 owners who are happy with the current HF fan profile, but can help those of us with low noise tolerance, tinnitus, or who just want a cooler KPA1500, and does it without an external Pc. Finally, it could be a marketing tool, since ICOM appears to be touting the PW2 as a quiet. amp. I would be happy to beta test this, if offered, and come back with some real numbers Thanks for your consideration. 73, Eric WD6DBM  __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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...@charter.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] Cleaning solder flux
Kester now sells a line of "No Clean" solder that leaves less residue than traditional products. It's not perfect (a Q-Tip and alcohol is better) but it's good enough for most work. -larry (K8UT) -- Original Message -- From: "Dr. William J. Schmidt" To: elecraft@mailman.qth.net Sent: 2022-01-02 10:12:08 Subject: [Elecraft] Cleaning solder flux During my under-graduate and graduate school careers, I worked at Honeywell's circuit board fabrication shop for about a year and a half. We had two machines in the shop that dealt with flux: a reflow machine and a parts set machine. The reflow machine was used to reflow the solder after plating so that it looked shiny. The board was emersed in a 601-type flux, heated to about 425F, cooled down, and then scrubbed (brushed) with Isopropanol alcohol three times (stages) with a water rinse and force-air dried (all automagically). The solder was beautiful and shiny at the end of this process. The parts-setting machine was similar... the whole (pre-reflowed) board was fluxed, the parts set, heated, and then cleaned. All fluxes come off with Isopropanol alcohol (remember IPA is polar like water and works that way). Fluxes come in various forms... some are more corrosive and some not... so you should follow the directions (right off the website). Rosin can remain on a board, but also can be problematic because it can collect debris (dust and other unwanted materials) because its plastic (flows at room temperature) sticky. Many of the water-soluble fluxes are more acidic, and will tarnish the solder joints if not removed. On the subject of using water on electrical components... most components (particularly if they might be mil spec) are made for water emersion (NOT ALL!). In my office lab we routinely clean circuit boards by scrubbing them with just water and force-drying them. Works fine. About a decade ago, I used to buy up surplus AM/ broadcast band transmitters for repurposing to other countries (mainly south America) for the Christian broadcasting markets. Once back at my shop, the first stop was a good through power washing in the driveway (paper and other water damaged goods removed of course) followed by a good drying (leaf blower). Works fine! Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ -- 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 k...@charter.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] KPA1500 Power Level
Barry, If you've connected your KPA1500 to ethernet/WiFI, you can display the amplifier's input watts, outputs watts, and efficiency in real time as you vary power levels. Download the freeware app FANticipator here: https://hamprojects.info/fanticipator-kpa1500-console-and-fan-controller/ Free. Easy install. No registration. Use it once (or more) and throw it away. -larry (K8UT) -- Original Message -- From: j...@kk9a.com To: elecraft@mailman.qth.net Sent: 2021-09-14 21:35:15 Subject: Re: [Elecraft] KPA1500 Power Level There is some information on KPA1500 efficiency in the archives: http://mailman.qth.net/pipermail/elecraft/2018-August/259502.html John KK9A Barry Simpson vk2bj wrote: I have had a quick look through the KPA1500 manual and could not find any reference to running the amplifier at a lower power level than the rated 1,500w. Can anyone comment on the implications (eg temperature, efficiency and IMD) of running a KPA1500 at say 500w by simply reducing the drive power. Would the power level be stable if set to 500w or would it drift upwards or downwards during the course of an over on CW ? Thanks Barry Simpson VK2BJ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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...@charter.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] KPA1500 parameters
25 in, 1322 out, 43% efficiency, 51.7 volts @ 59 amps with 1.5:1 SWR. (see screenshot) -larry (K8UT) -- Original Message -- From: "N2TK via Elecraft" To: "elecraft@mailman.qth.net" Sent: 2021-07-06 23:48:27 Subject: [Elecraft] KPA1500 parameters What do you typically see for Power Out, Voltage and Current with 25 and 30W drive on 20M?TnxN2TK, Tony __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k...@charter.net__ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 cw rise time
Tony, >...8ms, I think, which is unnecessarily long. Just yesterday, Rob Sherwood gave a Zoom presentation to the local SLAARC titled "Transmitter Spectral Purity." He spoke at length about the evils of fast rise times and cited the optimal rise time as between 6 and 8 ms. The Elecraft K3 line was described as one of the best behaved CW rigs, with a rise time of 6ms Yaesu rigs were denounced for being user-configurable from 1ms to 8ms, giving owners an opportunity to litter the bands with shorter times and key clicks. Slightly over 60 minutes long: https://youtu.be/EKCKkV5Nowo -larry (K8UT) -- Original Message -- From: "Tony - KM0O" To: elecraft@mailman.qth.net Sent: 2021-04-12 14:34:16 Subject: [Elecraft] K3 cw rise time Hello, This subject came up in a recent conversation, and I had to admit that I do not know the cw rise time of my K3. It's s/n 444, and does not have the cw rise time mod that elecraft sells. The firmware is the current version. I read somewhere that the rise time was decreased in a previous firmware issue, but I don't know if that's true. It was originally 8ms, I think, which is unnecessarily long. Can anyone help? 73, Tony KM0O -- 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 k...@charter.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] K3s Band Decode for Transverters
Chuck The FreqEZ Band Decoder will collect frequency data from some logging programs (DXLab, N1MM, Logger32), or BCD band data from the K3. Its output can then be configured to produce BCD outputs to drive the Q5. It's a DIY project. The software is free. You'll have to buy or build the hardware. www.freqez.info -larry (K8UT) -- Original Message -- From: ch...@martinrf.com To: elecraft@mailman.qth.net Sent: 2020-11-10 2:14:38 PM Subject: [Elecraft] K3s Band Decode for Transverters I have a K3s and a Q5 5 band V/U transverter. The Q5 has an input for band decode information. Has anyone attempted to use the K3S band data to control the Q5 transverter? The external transverter band data shown in my K3s manual is not consistent with the Q5 band decode data. Chuck ko1i __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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...@charter.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 band data query
Dennis, The K3's BCD outputs are defined by band, not frequency. You need something that tracks QRG, but the following may be serious overkill for your needs... If you use the general purpose logger DXLabs, or the contest logger N1MM, consider a freeware Band Decoder called FreqEZ. The program receives frequency info from those loggers and allows you to to define 255 band segments that control any combination of 16 remote relay lines. The software is free, but the hardware components are not. The FreqEZ website describes a DIY solution or an Assembled and Tested solution. (DISCLAIMER: I wrote the free software, but I also sell the Assembled and Tested hardware) www.freqez.info If you only need a few outputs, you could probably cobble together something that uses the free software but is simpler and cheaper. Contact me if you're interested. -larry (K8UT) -- Original Message -- From: "Dennis Ashworth" To: Elecraft@mailman.qth.net Sent: 2020-10-18 2:28:42 PM Subject: [Elecraft] K3 band data query I operate a vertical antenna for 80 & 160M where the bandwidth is such that I need to switch in reactance between the phone and CW portions of each band. I currently do this manually, but am installing vacuum relays for switching remotely. Is there a way the K3, through the data port or whatever, can send a signal when migrating between traditional (or operator defined) phone and CW portions of the band? Antenna matched points on 160 are at 1825 and 1855; 80M are 3520 and 3800. I had considered sensing the K3 mode, but that’s not an acceptable solution. The 160M CW contests can often extend into the traditional phone area and FT8/WSPR often use USB mode in the CW portion. Thoughts? Dennis, K7FL Las Vegas, NV __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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...@charter.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] KPA1500 Operation on 6 Meters
Ed, Your dummy load choices at 1500 watts range from expensive and good (Bird) to cheap and not-so-good. For example the MFJ-264 is listed as handling 1500 watts but if you read the fine print (the derating curve printed on its case ) you're limited to 8 seconds at 1500 watts. And each time you stress that dummy load its resistor value climbs by a few ohms. Frustrated with the commercial options available, I built a dummy load using a huge heatsink from a salvage VHF transmitter and a series/parallel combination of four 50 ohm 250 watt resistors purchased on eBay. https://www.ebay.com/itm/1PCS-Anaren-RFP-250-50RM-RFP250-50-RF-Power-Flanged-Resistors-250-Watts-50-ohm/133028134252?hash=item1ef9183d6c:g:uHQAAOSwyFhcvsvw -larry (K8UT) -- Original Message -- From: "Ed G" To: "Larry (K8UT)" ; "elecraft@mailman.qth.net" Sent: 2020-06-15 10:57:32 AM Subject: RE: [Elecraft] KPA1500 Operation on 6 Meters Hi Larry, Yes, exact same problem is there with a known good dummy load in place of the Steppir yagi I normally use. --Ed— Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10 From: Larry (K8UT) <mailto:k...@charter.net> Sent: Monday, June 15, 2020 10:09 AM To: Ed G <mailto:ed.n...@gmail.com>; elecraft@mailman.qth.net <mailto:Elecraft@mailman.qth.net> Subject: Re: [Elecraft] KPA1500 Operation on 6 Meters Ed, Not seeing that here. SWR value unchanged at 10, 20, 30, 35 watts of drive. Suggest you test into a dummy load to see if the problem goes away, which would suggest some issue with power level into the feedline or antenna. -larry (K8UT) -- Original Message -- From: "Ed G" To: "elecraft@mailman.qth.net" Sent: 2020-06-15 9:48:55 AM Subject: [Elecraft] KPA1500 Operation on 6 Meters >Folks, > I am trying to understand some odd KPA1500 operation on 6 meters. When setting the power output of my K3 to give varying amounts of drive to the KPA1500, I am seeing SWR as displayed on the KPA1500 changing by a significant amount depending on the drive level. This is with the KPA1500 tuner bypassed. An LP-100A on the output of the KPA1500 is also used and displays the correct low SWR at all drive levels that I would expect to be seeing on the KPA1500 display. > For example, with 5 watts drive from the K3, I see 1.3 SWR on the LP-100, and 2.5:1 on the KPA1500 display. As I increase drive, the KPA1500 SWR display goes down proportionally, until I get to about 40 watts drive. At the 40 watt drive level, I am seeing a nice healthy 1600 watts output, and both the LP-100 and the KPA1500 are showing the same 1.3 SWR. 15 watts drive shows 1.3 on the LP100 and 2.0:1 on the KPA1500 display. So I am not sure why the SWR sensing and display in the KPA1500 is behaving this way? I do not see this oddity on any other bands. > I might also add that attempting to get the KPA1500 internal tuner to bring down the high SWR as seen on the KPA1500 results in a drop in SWR displayed on the KPA1500 to where SWR almost equals that on the LP-100, but using the tuner I would expect that to be even better. >--Ed— > > > > >-- >This email has been checked for viruses by Avast antivirus software. >https://www.avast.com/antivirus >__ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto: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...@charter.net <https://www.avast.com/sig-email?utm_medium=email_source=link_campaign=sig-email_content=emailclient_term=icon> Virus-free. www.avast.com <https://www.avast.com/sig-email?utm_medium=email_source=link_campaign=sig-email_content=emailclient_term=link> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 Operation on 6 Meters
Ed, Not seeing that here. SWR value unchanged at 10, 20, 30, 35 watts of drive. Suggest you test into a dummy load to see if the problem goes away, which would suggest some issue with power level into the feedline or antenna. -larry (K8UT) -- Original Message -- From: "Ed G" To: "elecraft@mailman.qth.net" Sent: 2020-06-15 9:48:55 AM Subject: [Elecraft] KPA1500 Operation on 6 Meters Folks, I am trying to understand some odd KPA1500 operation on 6 meters. When setting the power output of my K3 to give varying amounts of drive to the KPA1500, I am seeing SWR as displayed on the KPA1500 changing by a significant amount depending on the drive level. This is with the KPA1500 tuner bypassed. An LP-100A on the output of the KPA1500 is also used and displays the correct low SWR at all drive levels that I would expect to be seeing on the KPA1500 display. For example, with 5 watts drive from the K3, I see 1.3 SWR on the LP-100, and 2.5:1 on the KPA1500 display. As I increase drive, the KPA1500 SWR display goes down proportionally, until I get to about 40 watts drive. At the 40 watt drive level, I am seeing a nice healthy 1600 watts output, and both the LP-100 and the KPA1500 are showing the same 1.3 SWR. 15 watts drive shows 1.3 on the LP100 and 2.0:1 on the KPA1500 display. So I am not sure why the SWR sensing and display in the KPA1500 is behaving this way? I do not see this oddity on any other bands. I might also add that attempting to get the KPA1500 internal tuner to bring down the high SWR as seen on the KPA1500 results in a drop in SWR displayed on the KPA1500 to where SWR almost equals that on the LP-100, but using the tuner I would expect that to be even better. --Ed— -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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...@charter.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] RTTY Problems on K3
Bill, You could begin by breaking the problem in half - test at the output of the optoisolators. Front Half - Test what's coming from N1MM and MMTTY: Put a scope or meter on the PTT line and click [TX] in MMTTY. Does the line go low and stay low for the duration of TX?Put a scope or meter on the FSK line and click [TX] in MMTTY. Does the line toggle at 15ms RTTY intervals? With a meter the voltage would drop, indicating lower average voltage - but something would be different between RX and TX. >If this doesn't work, first place to check is the MMTTY >Options >Setup >TX, "PTT and FSK" and >MISC, "Tx Port" Back Half - Test whether the K3 is sending RTTY: Use a clip lead to short the optoisolator PTT output to ground. Does the K3 go to TX?While the K3 is still in TX, use a second clip lead to short the optoisolator FSK output to ground. Does the TX monitor tone shift? -larry (K8UT) -- Original Message -- From: "k...@pa.net" To: Elecraft@mailman.qth.net Sent: 2020-05-24 1:12:45 AM Subject: [Elecraft] RTTY Problems on K3 I am fairly new to the K3 but have no problems setting up N1MM and other software, getting things to work properly. My problem is I cannot get RTTY to send/TX. I have made a homebrew interface with optoisolators for both the FSK line and the PTT line. I'm going from a separate serial port, pins 3 and 7, for FSK and PTT, to the Assy(15 pin) connector. To pins 1 for FSK, 4 for PTT and 5 for ground. When I run MMTTY I cannot get the rig to key. If I switch to SSB or CW and use the CAT line to work the PTT, no problem. If I switch to RTTY and try to use the CAT line it will not key the TX. I've tried a variety of setting in MMTTY and get no TX. I have a 1000MP set up with a similar homebrew interface and have no issues. Can anyone shed some help on me? 73 Bill K3SV __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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...@charter.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] KPA-1500 power supply fan noise
Peter I built a slightly longer cable to match the length of the control cable that came with the amplifier (about 3 feet longer if I recall correctly). This allows the PS to operate "remote" in a closet with the door closed. -larry (K8UT) -- Original Message -- From: "Peter Dougherty" To: Elecraft@mailman.qth.net Sent: 2020-05-23 10:33:19 AM Subject: [Elecraft] KPA-1500 power supply fan noise Is there any way to power off the fans (or lower their RPM) on the PSU if the amp is in standby mode? I would like to keep my rig on 6m throughout the day during the Es season. The problem is my 6m antenna is on antenna port 2 on the KPA, which requires the amp to be powered up. I only need to TX when a new grid pops up, but I do like to monitor the band during the day while I'm working. My XYL is working from home, and is in the same room for about 9 or 10 hours a day, and the noise after 10 minutes was too much for her. Any suggestions? Please-n-thanks. - 73 and Good DX Peter, W2IRT President, North Jersey DX Association DXCC Card Checker Letter O Manager, ARRL Incoming 2nd District QSL bureau __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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...@charter.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] Keyer goes berserk
Madison Is the Paddle plugged into Mortty? Or is the Paddle plugged into the Paddle input on the rear of the K3? Usually Paddles that behave like straight keys are diagnosed as having been plugged into a straight key input. If the paddles are plugged into the Mortty CW keyer you should be able to tell if they are working properly by watching Mortty's red PTT LED and green KEY LED. Assuming that's the case - since Mortty works elsewhere - my diagnosis is that you have Mortty plugged into the K3 Paddle input instead of the K3 Key input. -larry (K8UT) -- Original Message -- From: "Madison Jones" To: Elecraft@mailman.qth.net Sent: 2020-05-22 4:35:36 PM Subject: [Elecraft] Keyer goes berserk Neither the key nor paddle work on my K3. Using N1MM+ with a paddle and MORTTY keyer hooked up, when attempting to send a command via the keyboard, the K3 gave gibberish. When I attempted to use the paddle, it acted as a straight key. Rebooted everything with the same result. After testing the computer, all cables, connectors, the paddle, and the MORTTY interface and finding all will operate satisfactorily with a Brand X transceiver using the same N1MM+ program, same computer and with a paddle, I hooked everything back up to the K3. Now the K3 will not key at all, either through the program or manually with the paddle. Any suggestions before I send it back to Elecraft? 73 Madison W5MJ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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...@charter.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] Time Date Update
Is there any way to open the com port to the radio at a specific baud rate, rather than the utility's baud rate trolling method? Trolling for port speed fails when using an intervening virtual port device. -larry (K8UT) -- Original Message -- From: "Bob McGraw K4TAX" To: "Elecraft Reflector" ; "elecraft...@groups.io" Sent: 2020-01-01 09:19:37 Subject: [Elecraft] Time Date Update Now is the time to use the Elecraft K3 Utility to update the clock and calendar on your K3 or K3S.Open the K3 Utility application, select the Configuration tab and then tap the Set K3 Date and Time bar.This will set the K3 to the computer which we all know is kept updated with a good time/date application. Happy New Year to all. 73 Bob, K4TAX __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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...@charter.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] KPA500 with K3s
Expanding on the "two different levels based on the amps OPER/STBY switch" described by Dick, the cable enables those two levels per band. For example, you can adjust the Operate level on 30 meters for a full 200 legal watts; 300 watts on 10, 15 and 30 into your TA33 Junior tri-bander; and the amp's full output into your dipoles. -larry (K8UT) -- Original Message -- From: "Dick Dievendorff" To: k...@arrl.net; "'Elecraft Discussion List'" Sent: 2019-10-10 07:30:58 Subject: Re: [Elecraft] KPA500 with K3s See pages 15, 16, and 27 of the KPA500 Owner's manual for a description of what the 15-pin ACC cable can do for you. It amounts to band information both ways so the amp can switch bands from the K3's band information before you provide RF, the KPA500 front panel band buttons can bandswitch the K3, and K3 drive power can be set to two different levels based on the amp's OPER/STBY switch. My K3 provides 30 watts when the amp is in OPER, and 100 watts when the amp is in STBY. 73 de Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Dave Sublette Sent: Thursday, October 10, 2019 04:15 To: Elecraft Discussion List Subject: [Elecraft] KPA500 with K3s Good morning, I am building the KPA500. I have the K3s. Can anyone explain, in simple terms, what advantage there is in using the KPAK3AUX cable instead of just using the Key Line cable? Thanks, Dave, K4TO __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 k...@charter.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] KPA-1500 on digital modes
If my efficiency screenshots from earlier did not get through the reflector, you can see the results in a JPG file here: https://hamprojects.info/hamprojects-download-page/#elf_l1_b3RoZXJz -larry (K8UT) -- Original Message -- From: "Roger D Johnson" To: "Elecraft List" Sent: 2019-08-29 17:44:05 Subject: Re: [Elecraft] KPA-1500 on digital modes I just did a quick check: At 1500 watts eff is 56% and pwr diss is 1179 watts 1000 44 1273 500 30 1120 My Expert 1.3K-FA had 3 voltage levels: 48 volts for full power (1300 watts) 38 800 watts 32 450 I no longer have the amp so I can't check the eff at those voltages and power levels. 73, Roger On 8/29/2019 9:03 AM, Roger D Johnson wrote: It's interesting that the heat that has to be dissipated is pretty close to 1000 watts in all these scenarios! Running the amp at less than full power buys you nothing. 73, Roger __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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...@charter.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] KPA-1500 on digital modes
Pete, I don't run my amp at full legal limit on digital modes, but typically set the input power for about 1000 watts output. One of the interesting characteristics of the amp is increased efficiency as power increases. At 600 watts efficiency is only 38%, whereas at 1000 efficiency increases to 50% and at 1500 watts to 60%. (see screenshots) -larry (K8UT) -- Original Message -- From: "N4ZR" To: "Elecraft List" Sent: 2019-08-29 07:59:23 Subject: [Elecraft] KPA-1500 on digital modes Elecraft's published specs rate the KPA-1500 for 1500 watts output on all modes. In prepping for this weekend's contest, I've been running it at closer to 700 watts, because I've found that even just running on CW, with its much lower duty cycle, my amp reaches 70C quickly. I don't do that much digital contesting, though, so I'm wondering whether 1500 watts output is on digital modes is realistic or a recipe for trouble. -- 73, Pete N4ZR Check out the Reverse Beacon Network at <http://reversebeacon.net>, now spotting RTTY activity worldwide. 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 k...@charter.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] KPA1500 Power Supply Fan Noise
Eric, My shack is a relatively quiet operating environment, but declaring something as quiet or noisy is always somewhat subjective. The fans in my PSU are pretty quiet, but nevertheless the KPA1500 PSU is remote-installed in a closet in my shack. I am absolutely no "audio" guy, but years ago installed a free, cheap & dirty noise level meter app on my android phone called "Sound Meter." I use it to complain to restaurant managers that the blaring music in their establishments is too loud for casual conversation, demanding that it be turned down. With the KPA1500 turned off and phone situated 3 feet from the power supply, the noise level in that closet is 28 DB. Turning on the amplifier raises the noise level by 12 DB to 40 DB - a 12 DB difference. Not much difference, and certainly not the "piercing power supply fan noise" you describe. -larry (K8UT) -- Original Message -- From: "eric norris via Elecraft" To: "li...@w2irt.net" ; "li...@w2irt.net" ; "Elecraft Reflector" Sent: 2019-06-10 19:57:02 Subject: [Elecraft] KPA1500 Power Supply Fan Noise More broadly, has there been any progress on reducing the piercing power supply fan noise on the KPA1500 when only using it as a tuner or an antenna switch? I complained about this a year ago, and I find it completely unacceptable. No set of noise-reducing headphones that I have tried works well enough to make the noise tolerable. I've tried moving the PS deck around with minimal improvement. This just doesn't seem to fit Elecraft's philosophy of a quiet operating environment. Why do these fans have to operate at full throttle when there is minimal current draw from the rf deck? Why do these fans create such a piercing high-pitched note? If there is no response from Elecraft, what have other ops done--short of moving the PS into an adjoining room--to mitigate the scream? Thanks, 73 Eric WD6DBM Sent from Yahoo Mail on Android __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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...@charter.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] band decode/antenna switch controller
If you'd like to tackle a DIY project, take a look at the FreqEZ Band Decoder project. http://hamprojects.info/freqez/ Decode by: BCD output, Radio Frequency, or up to 250 Band Segments16 SPDT relay outputsNo DIP switches, diodes, solder-bridges. All configuration is via software settingsFree software. You buy your hardware from your favorite sources Watch a short (5 minutes) FreqEZ Overview video HERE <http://hamprojects.info/hamprojects-download-page/#elf_l1_RnJlcUVa> (FreqEZ Overview_Video.MP4) -larry (K8UT) -- Original Message -- From: "Evert Bakker" To: "'elecraft Reflector'" Sent: 2019-06-06 11:32:02 Subject: Re: [Elecraft] band decode/antenna switch controller A Q abt the KRC2: Is it possible two switch to two different antennes within one band but based on frequency span ? Example: 3.500 - 3.650 Mc Antenna 1 3.650 - 3.800 Mc Antenne 2 73's, Evert PA2KW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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...@charter.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] KPA-1500 tuner questions
Peter, Could you use a fancy Band Decoder that provides auxiliary outputs based on operating frequency (not band)? Use the auxiliary outputs to automatically enable/disable the Palstar tuner when your 40 and 80 operating frequencies require. Otherwise keep the Palstar out of circuit. See: www.hamprojects.info/FreqEZ -larry (K8UT) -- Original Message -- From: "Peter Dougherty" To: "'K9MA'" Cc: "'Reflector Elecraft'" Sent: 2019-03-14 01:45:28 Subject: Re: [Elecraft] KPA-1500 tuner questions Well that's just it, the SWR is very, very high in the phone portions of both 40 and 80. I can't see any other way to accomplish full automated operation without the second tuner. I am loathe to have two of them together, but I just can't see any other way. I occasionally remote my own station, and even when not, I can't risk another high power/high-SWR error, so on QSY I have no alternative but to pre-tune before keydown. 40m is below 2:1 until around 7090ish, then rises very rapidly above that. It's 8:1 at 7295. 80m is below 2:1 from 3500 to 3700ish, then rises to 10:1 by 4000 (although it's closer to 5.5:1 at 3850, as high as I'll ever go. - pjd -Original Message- The ATU in the KPA1500 alone will achieve the 1.2:1 match with the 2.09 firmware, now in beta. The external tuner is not necessary, unless the antenna SWR is very high. 73, Scott K9MA -- Scott Ellington --- via iPad On Mar 12, 2019, at 10:24 PM, Peter Dougherty wrote: Thanks, Scott! I'm going to change the way I do things so that ATU is always in, and the Palstar HF-Auto switches to AUTO mode rather than Manual to keep the match seen by the KPA below 1.2:1 - pjd -Original Message- From: K9MA Sent: Tuesday, March 12, 2019 1:53 PM To: Peter Dougherty Cc: Reflector Elecraft Subject: Re: [Elecraft] KPA-1500 tuner questions Just a general comment on the KPA1500: My experience with it shows that the SWR has to be below 1.2:1 at the amplifier output (ATU input) to run reliably at full power. If the SWR is higher than that, the amp will often fault due to excessive current or drive power before reaching 1500 W. (And may splatter on SSB.) Elecraft recently updated the ATU firmware to consistently find a better match, and it really helps. 73, Scott K9MA -- Scott Ellington --- via iPad On Mar 11, 2019, at 8:49 PM, Peter Dougherty wrote: I have a couple of questions about the KPA1500's internal tuner. For the most part, I leave the tuner inline. Except for two sub-bands (SSB on both 40 and 80m) I am well below 2:1, and maybe 2.5:1 at the top end of 160m. The KPA does a good job throughout. The problems/questions arise when I need to transition between the KPA's internal tuner on the bottom ends of both 40 and 80, and the external Palstar HF-Auto tuner, which I need to wrangle very high SWRs on the phone portions of those bands. Obviously I don't want both automatic tuners inline at the same time. The situation is most acute on 40. The HF-Auto (external automatic tuner) is bypassed everywhere except the range of 3650 to 4000, and 7100 to 7300. I would like to automatically have the KPA1500's tuner go into bypass at the above ranges, just as the Palstar auto-tuner bypasses outside of those ranges. Is this somehow possible, or must I manually switch the tuner in and out when I cross the appropriate thresholds? Second question, and I think this relates to the whole "bins" thing, which I don't understand, relates to having different tuning solutions on the same band segment. This could be handy for me on 80m. Unlike on 40, for 80 I have an inverted vee, and it's easy for me to drop the ends and change the length of the antenna, so that instead of being resonant at 3550 I could make it 3700. I did this for the ARRL-SSB contest and it worked pretty well. Is it possible to have two different sets of memorized tuning solutions in the KPA-1500, in the event I have the vee set for CW (normal) or SSB (for phone contests only)? - 73 and Good DX Peter, W2IRT President, North Jersey DX Association DXCC Card Checker Letter O Manager, ARRL Incoming 2nd District QSL bureau __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 em
Re: [Elecraft] west mountain com speaker power supply info
Art, I have two pair of those speakers - one pair from the PC audio and the other from the two K3 audio channels. I run them both from my shack 12 VDC power supply. (i hate wall warts) -larry (K8UT) -- Original Message -- From: "Arthur Nienhouse" To: Elecraft@mailman.qth.net Sent: 2019-03-10 13:59:14 Subject: [Elecraft] west mountain com speaker power supply info /*Can anyone help with power in put for the twin speakers west mountain is selling COM spkr computer spk system.. CS1 # 58409 950 The back is labeled DC IN but nothing as to voltage and pin out. There is nothing I can find on there web site or internet. Any help would be greatly appreciated Regards Art ka9zap */ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA fans in digital modes
Eric, If you'll pardon a little self-promotion, you might consider using FANticipator to control the fans in your KAP1500. It's free, runs local or remote, and will perform those speed-changing tasks automatically for you... including shutting the fans off completely when the amp returns to ambient temperatures. http://hamprojects.info/fanticipator-kpa1500-console-and-fan-controller/ -larry (K8UT) -- Original Message -- From: "eric norris via Elecraft" To: "elecraft@mailman.qth.net" Sent: 2018-12-04 05:39:56 Subject: [Elecraft] KPA fans in digital modes I, too, use FAN2 for both the KPA500 and KPA1500 in digital modes. Both amps run considerably cooler and with less thermal variation. It would be great if the PF1 or PF2 keys on the KPA1500 could be used to toggle into a preset FAN2 (or choose your poison) when pounding away on digital modes like MSK144 for meteor scatter on 6m. I don't know if it would be possible to do something similar for one of the keys on the KPA500--perhaps the AUX band switch? For both amps I switch back to FAN NOR for casual CW use. For all of you out there with even a 3el beam and 100w on 6m, please try meteor scatter using MSK144--you can make contacts every day out to 1500km or more, even without a clear horizon. Schedules optional at the Ping Jockey website. It's a blast! 73 Eric WD6DBM Sent from Yahoo Mail on Android __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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...@charter.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] CODEC
David >There should be very little reason to use Dimension 4 There is often a significant gap between Theory and Practice, and such is the case with using Windows as a self-regulated timepiece. True, Windows is a well behaved ntp client, but the default interval for Windows "phoning home" to resync is 7 days. In 7 days my PC has drifted so far that FT8 operation is impossible. The user has two choices: use Regedit and mess with the Windows registry to reduce the interval; or install a time sync program. For most, the second option is easier. -larry (K8UT) -- Original Message -- From: "David Woolley" To: "Mike Greenway" ; elecraft@mailman.qth.net Sent: 2018-10-06 08:27:19 Subject: Re: [Elecraft] CODEC There should be very little reason to use Dimension 4, with step updates at fixed intervals. The full implementation of ntpd is available for all the Windows NT family, i.e. everything after Windows 95, and versions or w32time that can be configured to implement the older version of NTP have been supplied with Windows since at least Windows XP. The standard ntpd always works by managing clock frequency, so there are no abrupt time steps unless something has gone sufficiently wrong to result in a step of at least 200ms. w32time can be configured to work that way, although generally installing the standard (reference) version of ntpd is preferred. (ntpd can be configured to almost never step the time.) Although Windows is not a good platform for time keeping, both these approaches ought to produce times accurate to about 20ms, and only slowly changing with time. In some circumstances, Linux can produce several orders of magnitude better results. On 04/10/18 22:32, Mike Greenway wrote: As previously posted the problem had nothing to do with CODEC or the K3S. Problem turned out to be the time update of the computer by Dimension 4. I had it set for updates every 1 sec as I didn’t think that was a problem. I now have it set for 30 Mins and probably and hour would not hurt anything as every 15 secs it does about .049 correction on my computer. I don’t think it is abnormal for the Rates on WSJT-10 to jump out of range when a time update is done to the computer. Something you cant see on WSJT-X or JTDX. Thanks to all that wrote with suggestions, all of them good. 73 Mike K4PI __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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...@charter.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] KPA1500 - Static IPv4 address
Yes. You can disable DHCP in the amplifier and assign a static address. Your router must be capable (within its address range) of accepting that static address without a conflict from another device. In the KPA1500 configuration utility v1.18.7.9: Select menu >Configuration >Edit Configuration >Network tab On the network tab, disable (uncheck) DHCP Manually enter the address you want the amplifier to use Press OK. -larry (K8UT) -- Original Message -- From: "Burl Borcherding" To: elecraft@mailman.qth.net Sent: 2018-09-19 08:46:08 Subject: [Elecraft] KPA1500 - Static IPv4 address Is it possible to set a static IP address on this amp? I am thinking using one of my static IPv4 address and port 1500. This would eliminate the local /server computer. Or is there a better method of using remote K3, KPA1500 and RemoteRig? I want to be able to use the KPA1500 app to monitor the amp. Burl, AJ9Q __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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...@charter.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
[Elecraft] KPA1500 FANticipator v1.0 - Console and Fan Controller program released
My thanks to the Beta group who assisted in testing and fine-tuning FANticipator in preparation for its initial v1.0 release. FANticipator is a free Windows application that connects to an Elecraft KPA1500 amplifier over ethernet/WiFi and provides lightweight console functionality and sophisticated fan (noise) control. You can read more about the application here: www.hamprojects.info You can download the application from the file gallery of the FANticipator groups.io reflector here: https://groups.io/g/FANticipator The author and Beta testers have been active on that groups.io reflector, and you should direct your questions/issues about FANticipator to that group rather than here on the Elecraft reflector. -larry (K8UT) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 fsk with usb
This thread is running parallel to a discussion running on the DXLabs reflector today, due to the release of a new MMTTY FSK interface to TinyFSK programmed by Oba JA7UDE. I'll apologize in advance for inserting the following: """" I'd like to avoid having my response drag this thread into the perpetual debate about AFSK versus FSK RTTY. However, if you already know that you prefer RTTY via FSK there has been a secondary argument about whether a RTTY application that is dependent on the interrupt/event timing characteristics of Windows can produce high fidelity FSK RTTY. Many (myself included) believe that the best RTTY FSK signals can be achieved by "outsourcing" RTTY timing to a separate processor -- which is exactly what TinySK achieves by running on an external Arduino board. Then the problem becomes "well, can my RTTY program (MMTTY in this case) talk to a TinyFSK board?" Up until now MMTTY operating stand-alone had no interface to TinyFSK. This new modem definition file from Oba JA7UDE provides that interface. For users of other logging programs (like N1MM, DXLabs WinWarbler) where the developers had previously written work-arounds that could interface from MMTTY to TinyFSK, this work by JA7UDE may simplify the plumbing and configuration of a TinyFSK connection. Finally, the last question becomes "well, what do I need to get this working?" If you google "tinyfsk by K0SM" you will see many websites (selfishly -- including my own www.mortty.info/mortty ) devoted to connecting your PC's USB port to an Arduino board with supporting hardware. """" Additionally, Joe W4TV added that there are commercial devices available from several companies, most notably microHAM, which also "outsource" FSK RTTY timing to their external processors. -larry (K8UT) -- Original Message -- From: "brian" To: elecraft@mailman.qth.net Sent: 2018-08-30 15:35:32 Subject: Re: [Elecraft] K3S fsk with usb Rich, I seem to recall that the serial port needed for FSK generally cannot come from the run of the mill USB/RS232 converters. They can't operate at 45 baud/5 bit rate needed. See: http://aa5au.com/GettingStartedOnRtty.pdf This is old info and things may have changed. So what does a guy who has only USB ports do other than AFSK? I thought that was his question. 73 de Brian/K3KO On 8/30/2018 18:19 PM, Richard Ferch wrote: To transmit FSK from N1MM+/MMTTY with a K3 or K3S, you need: (a) some kind of serial port-based keying interface; and (b) a cable from the keying interface to the 15-pin ACC port on the back of the K3/K3S (pin 1 is the FSK keying input). The serial port used for FSK keying by MMTTY must be a different serial port from the port used by N1MM+ for radio control. The two programs cannot share the same serial port. The serial port interface can be a one-transistor keying circuit connected to a true serial port, or the same kind of interface connected to a USB-to-serial adapter with the help of the EXTFSK plugin in MMTTY, or a USB device that incorporates both a virtual serial port and a keying circuit, such as a commercially available keying interface (e.g. microHam, RigExpert, ...), or a TinyFSK (either with a special plugin for MMTTY or used directly from N1MM+). In principle, an RTTY program could use radio control commands to key FSK via the USB cable to the radio, but none of the RTTY modems supported by N1MM+ (including MMTTY) use this method. It should be possible to program CAT1ASC macros into the N1MM+ function keys to implement this approach, but I don't know whether anyone has tried this. There are a number of people who have used a similar approach for keying CW from N1MM+ with the KX2 and KX3, and offhand I cannot think of a reason why it would not also work in FSK RTTY, but I have never tried it. Just as in CW, there are likely to be some features of N1MM+ that work with more traditional methods but that wouldn't work using this unsupported method. 73, Rich VE3KI PD1RP wrote: I want to do FSK with my K3S. N1MM and MMTTY. The USB cable i used it for radio control. What kind of cable do i need for FSK or can i used the USB cable also. Any suggestions are welcome. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 als...@comcast.net --- 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 li
Re: [Elecraft] beta Software: KPA1500 FANticipator - console and fan control
Hi Bob "During Tx, override fan menu settings and run at settings +1" (Not sure what this means, run fan at 2 when it normally would be at 1?) Yes, that is exactly what it means. The assumption being that you would rather hear the fans when transmitting (said the RTTY / FT8 guy ...) than when receiving. And while transmitting be a little more aggressive with heat removal than during receive. I wrote a short description - perhaps not real clear - of the options here: http://mortty.info/fanticipator-features/ >doesn't try to do fan adjustment when running full QSK Correct. There is a minimum runtime built into the fan logic to avoid short-cycling the fan motors. This sometimes results in the fan continuing to run for a couple of seconds into a receive cycle. >this fan logic could be built into the KPA1500 firmware Perhaps. At this stage, FANticipator is at that proof-of-concept stage. If KPA1500 owners are happy with it we can talk to Elecraft about including a richer feature set into fan control. -larry (K8UT) -- Original Message -- From: "Bob Wilson, N6TV" To: "Elecraft Reflector" Sent: 2018-08-09 12:33:52 Subject: Re: [Elecraft] beta Software: KPA1500 FANticipator - console and fan control FANticipator GUI has two checkboxes: "During Tx, override fan menu settings and run at settings +1" (Not sure what this means, run fan at 2 when it normally would be at 1?) "After Tx, override fan settings and run at #1 until below 40c" I assume it doesn't try to do fan adjustment when running full QSK, between every dot and dash, but there's some type of delay involved, right? It also seems like this fan logic could be built into the KPA1500 firmware if the result is a quieter and cooler amp. on receive. 73, Bob, N6TV On Thu, Aug 9, 2018 at 8:04 AM, Larry (K8UT) wrote: FANticipator is a freeware KPA1500 console and enhanced fan controller that I've developed to maximize shack silence and minimize fan noise. My selfish intentions are based on the following: You prefer to have the fans automatically shut off completely when the amp nears ambient temperatureYou prefer hearing the fans when transmitting rather than when receivingYou prefer listening to more time with the fans running at speed #1 rather than less time with the fan at speeds #2 or #3 or ... You can read more about FANticipator and see screenshots at: www.mortty.info It's working fine here... If you're interested in beta testing, please contact me offline: k...@charter.net -larry (K8UT) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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...@charter.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
[Elecraft] beta Software: KPA1500 FANticipator - console and fan control
FANticipator is a freeware KPA1500 console and enhanced fan controller that I've developed to maximize shack silence and minimize fan noise. My selfish intentions are based on the following: You prefer to have the fans automatically shut off completely when the amp nears ambient temperatureYou prefer hearing the fans when transmitting rather than when receivingYou prefer listening to more time with the fans running at speed #1 rather than less time with the fan at speeds #2 or #3 or ... You can read more about FANticipator and see screenshots at: www.mortty.info It's working fine here... If you're interested in beta testing, please contact me offline: k...@charter.net -larry (K8UT) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] KPA-1500 Power Supply Cable Size
The stock cable is parallel conductors @ 5.5 feet long. Too short to reach into the closet in my shack. I bought 10 feet of #6 and the 75 amp powerpole connectors from Debco for about $22. I did not have the 75 amp crimp tool and soldered the cable into the connectors. -larry (K8UT) -- Original Message -- From: "Clay Autery" To: "Richard Thorne" ; "Elecraft Reflector" Sent: 2018-07-28 16:57:52 Subject: Re: [Elecraft] KPA-1500 Power Supply Cable Size Only problem, besides price, for the Powerwerx custom cables is that they don't have twisted pair only parallel conductors. 73,Clay, KY5G Sent from my Verizon, Samsung Galaxy smartphone Original message From: Richard Thorne Date: 7/28/18 15:52 (GMT-06:00) To: Elecraft Reflector Subject: Re: [Elecraft] KPA-1500 Power Supply Cable Size Looks like I can order a custom cable from powerwerx.com with 75 amp power poles and 6g wire (assuming that's the correct size). https://powerwerx.com/custom-dc-power-cables The crimp tool is not too expensive so it may be worth buying the tool and rolling my own. I've used 15,30 and 45 amp PP's for years, just never had a need for 75 amp PP's so I never purchased the equipment. Rich - N5ZC On 7/28/2018 7:04 AM, Richard Thorne wrote: What gauge wire is used for the HV line between the power supply and amp? I'd like to build or source a shorter cable. Thanks Rich - __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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...@charter.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] KPA-1500 Power Supply Cable Size
I purchased 75 amp Anderson Powerpole connectors and #6 flex speaker cable from Debco Electronics for my extension cable. #6 fit easily. I suspect even #4 would have fit, but I see no reason to get that large. -larry (K8UT) -- Original Message -- From: j...@kk9a.com To: "'Elecraft Reflector'" Sent: 2018-07-28 15:21:03 Subject: [Elecraft] KPA-1500 Power Supply Cable Size The 75 amp Powerpole connector is designed for 6, 8 or 10 AWG wire so you might have problems squeezing a larger wire in. John KK9A [Elecraft] KPA-1500 Power Supply Cable Size Clay Autery KY5G at montac.com If it uses a 75 Amp PP connector, my inclination would be to use the 6AWG MINIMUM. I would be tempted to use the flexible welding cable lead stock in the largest gauge I could fit in the application space. I'd trim down the end of the conductor to JUST fit into the 75 AMP crimp contact. Then, I'd tine the trimmed down end to bond ALL the conductors together right at the end before I crimped/soldered. Then, I'd crimp/solder the terminal on making sure not to be sloppy and cause a fitment issue. If possible, I would put as many twists in the red/black leads between radio and power supply connection as possible I've not investigated the wiring yet, BUT, if there is a ground wire between the PA chassis and the PS chassis, I would integrate the ground wire into the power harness in a 3-wire bundle with all three wires as close to the same length and shinked into a single cable. But I'm nuts... On Sat, Jul 28, 2018 at 5:04 AM, Richard Thorne rthorne.net> wrote: What gauge wire is used for the HV line between the power supply and amp? I'd like to build or source a shorter cable. Thanks Rich - N5ZC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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...@charter.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] Amp comparisons
The most important difference between the Elecraft KPA1500 and the FlexRadio PowerGenius XL is that you can actually buy one of the KPA1500s. According to the FlexRadio website, the PowerGenius - announced over two years ago - is still just taking reservations. -larry (K8UT) -- Original Message -- From: "j...@kk9a.com" To: elecraft@mailman.qth.net Sent: 2018-07-24 08:12:53 Subject: [Elecraft] Amp comparisons K7ERQ left EHAM reviews on both, it would be nice if he wrote a comparison. A couple things not mentioned below is that the Flex amp is SO2R capable and has a higher list price. John KK9A K9MA wrote: On 7/23/2018 21:37, Gary K9GS wrote: Any side by side with the KPA1500 and the Flex Power Genius yet? I haven't seen any yet. I did have a conversation last year with 4O3A, designer of the Power Genius. From what Ranko said, the Flex amp seemed to have more headroom than the KPA1500, which might result in better linearity at 1.5 kW, albeit at the expense of efficiency. (The specs say "capable of 2 kW.") There is some scheme to dynamically adjust the supply voltage for higher efficiency at lower power, I presume for CW and RTTY, where linearity isn't a big issue. I read somewhere that supply voltage is NOT modulated in SSB mode, which I imagine would cause lots of nonlinearity. The Flex amp can do predistortion with their radios. However, the KPA1500 also has an output sampling port, which should allow it to do predistortion also with a radio capable of it, probably including the Flex. (I wouldn't be surprised if Elecraft came out with that feature eventually. Could that be the reason it has that sampling port?) The Flex amp has an external ATU, which 4O3A strongly favors, but I think that's a personal preference. For most stations, with antennas that aren't always below 1.5:1, a solid state amplifier without an ATU is pretty useless, so I think Elecraft's decision to integrate it makes sense. While the Flex amp can certainly be made to work with Elecraft radios, the seamless integration with the KPA1500 is very attractive. I'm happy with mine so far. 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 k...@charter.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] KPA1500 S/N 160 delivered today
Bill, My KPA1500 also defaulted to FAN SPEED MIN = 0, but that is not fans off (at least not on my amplifier). My fans engage at 60c (low), 65c (medium) and 70c (egads). Is there a menu explanation somewhere about the start/stop temps and speeds? I would like a little more hysteresis in the 60c setting: start at 60c but continue cooling until temp drops to 50c. That might work a little better when running digital modes with long Tx/Rx intervals. -larry (K8UT) -- Original Message -- From: "Bill Stravinsky via Elecraft" <elecraft@mailman.qth.net> To: "Elecraft Reflector" <elecraft@mailman.qth.net> Sent: 2018-05-18 15:41:49 Subject: Re: [Elecraft] KPA1500 S/N 160 delivered today After having played with mine extensively last night, I was under the impression that the fans would come on automatically when the temp reached a certain degree.That is not the case. Mine was defaulted at fan speed zero, which is fans off. You have to change the menu item for fans to one of your liking. I had read a few postshere on the reflector about 2 being an acceptable number. I agree. If you crank it up to max (5) you might scare the dog, be careful, hi. BillK3WJV On Tuesday, May 15, 2018, 5:59:02 PM EDT, Roy Koeppe <k...@ncn.net> wrote: Works perfectly so far. The fans have never come on during my testing periods, including at full power. Power supply fans under the table are quiet. Really like! Low drive power. Was ordered 8-25-17 at 0900 CA time. 73, Roy K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 k3...@yahoo.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 k...@charter.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] FS - Elecraft KPA500 and KAT500 SOLD
The amp and tuner have been sold. Thanks to all who replied. -larry (K8UT) -- Original Message -- From: "Larry (K8UT)" <k...@charter.net> To: "elecraft@mailman.qth.net" <elecraft@mailman.qth.net> Sent: 2018-05-16 10:22:54 Subject: [Elecraft] FS - Elecraft KPA500 and KAT500 For Sale - an absolutely pristine KPA500 amplifier and KAT500 tuner pair. Includes both interconnect cables. Two years old, in perfect working order, has never required repair, never used anywhere but in my non-smoking shack. $2300 plus shipping/insurance (CONUS anticipated around $75) from 48189. PayPal preferred, but check/money order OK after bank clearance. Please reply off-line to my email address. -larry (K8UT) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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...@charter.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
[Elecraft] FS - Elecraft KPA500 and KAT500
For Sale - an absolutely pristine KPA500 amplifier and KAT500 tuner pair. Includes both interconnect cables. Two years old, in perfect working order, has never required repair, never used anywhere but in my non-smoking shack. $2300 plus shipping/insurance (CONUS anticipated around $75) from 48189. PayPal preferred, but check/money order OK after bank clearance. Please reply off-line to my email address. -larry (K8UT) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] First impressions of KPA1500 #113
Hi Les I also noticed the phantom SWR indication (jump to 3.4:1 on my amp, displayed after transmitting - in Rx mode) that has only occurred twice, and those times when the temp approached 60c. The output does not seem to be affected - power level stays the same, and no fault condition gets triggered. My external SWR/Power monitors also remained unchanged, so I am thinking it is a display-only problem that is internal to the amp. To try and avoid unexpected ATU retuning, studied the specs for the ATU memories (page 17 of the preliminary doc) and methodically spun the VFO across every band, pre-recording in ATU memory the settings for every band/segment based on its intervals (10KHz, 20KHz, 100KHz, 200KHz). Thereafter I just let the amp decide what it needs to do when changing bands/frequencies. Have not witnessed any re-turning. -larry (K8UT) -- Original Message -- From: "Les Peters" <n...@comcast.net> To: Elecraft@mailman.qth.net Sent: 2018-05-10 21:39:14 Subject: [Elecraft] First impressions of KPA1500 #113 Arrived May 5th and setup was easy. I’m noticing periodically a momentary higher than normal SWR indication on the SWR bar graph. And I’m still trying to get used to the ATU. I’m experiencing the ATU having to make adjustments sometimes at the start of a transmission after the ATU has already been properly setup for the antenna and band. Is anyone else experiencing anything this or am I doing something wrong? Les, N1SV __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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...@charter.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] Static Discharge Through K-Pod
Chuck, I had this problem in my carpeted shack with a desk chair rolling around on a vinyl chair pad. After a little testing I determined that the metal case of the K-Pod is not grounded. The KPod uses a straight-through 6 conductor cable with identical RJ connectors on each end. I built a slightly longer cable for my KPod, using 6 conductors of a stranded 8 conductor flat ethernet wire. A 7th conductor provides chassis ground from the K3 to the metal case of the KPod. I have had zero issues since grounding the K-Pod case. -larry (K8UT) -- Original Message -- From: "Chuck Milam, N9KY" <n...@arrl.net> To: "Elecraft Mail List" <elecraft@mailman.qth.net> Sent: 2018-03-15 11:08:03 Subject: [Elecraft] Static Discharge Through K-Pod Greetings, All! I'm getting static electricity shocks through my K-Pod case, and I need some suggestions for mitigation. Background: I keep my K-Pod on my operating desk just to the right of the shack computer mouse. I've noticed when I walk over to the desk and grab the mouse, the K-Pod will beep. Further investigation shows I'm getting static electricity discharge from my finger through the K-Pod, this morning I even noticed an arc from my pinky finger to the K-Pod case. When the K-Pod beeps, the D1 and D2 lights will cycle. The shack is carpeted, and I have a rolling chair on one of those plastic chair mats (which can probably go away if necessary,) I suspect that mat is probably contributing to the static problem. Obviously, I don't want static electricity discharging through my K-Pod and then through my K3. I'd welcome any ideas for static mitigation strategies. I was thinking some sort of grounded mouse/keyboard mat, which used to be more common, but seem hard to find these days. 73, Chuck Milam, N9KY n...@arrl.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 k...@charter.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] Walwarts - linear supplies
Two years ago, I embarked on a "wallwart-ectomy" in my shack, removing all wall warts and replacing them with DC power cords that connected to fused dc power strips, connected to a single shack linear supply. Band decoder, PC speakers, SDR Rx, wavenode wattmeter... none of those items have their own power source any more. -larry (K8UT) -- Original Message -- From: "Joe Subich, W4TV" <li...@subich.com> To: elecraft@mailman.qth.net Sent: 2017-11-20 16:17:02 Subject: Re: [Elecraft] Walwarts - linear supplies All Electroncs (www.allelectronics.com) has analog wall warts of various voltage/current capability depending on what is available in surplus at any given time. One may not even need regulated voltage as many devices contain internal regulators ... They presently show 12 V @ 500 mA and 12.5V @ 410 mA units that appear to be analog for less than $5.00 each in Q=1. 73, ... Joe, W4TV On 11/20/2017 3:37 PM, N2TK, Tony wrote: I believe recently there was talk about noise from walwarts. Jameco Reliapro offers a line of linear regulated walwarts. They are reasonable in price and so far noise free. They range from 2-24VDC with .2-1A output. N2TK, Tony __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html 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 k...@charter.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
[Elecraft] OT - Intro to FT8 powerpoint presentation
Several weeks ago there was a series of reflector posts by hams looking for materials on FT8 to use in PPT presentations. I had offered to post my slides after delivering to the SEMDXA club meeting on 11/10. The 27 MB ZIP file contains the .pptx file, two videos (stand-along and log-integrated operation) and a README file. www.semdxa.org >File Gallery >Presentations, "Intro to FT8 presentation by K8UT" or http://www.semdxa.org/download/presentations/IntroToFT8_presentation_byK8UT.zip Anyone is welcome to cut/copy/plagiarize as they require. Corrections and comments would be appreciated - direct to my email address. -larry (K8UT) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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
