Re: [Elecraft] FS: New CM500 headset
This will be my final post on this topic which has morphed to hearing loss. I had my annual hearing test today. I asked for a chart and out of curiosity we looked back to my first exam in 1996 which resulted initially getting hearing aids. Apparently little change but my audiologist remarked that i had significant loss even back then at age 52. I will summarize the chart L-ear/R-ear: 250-1000 Hz -55 dB 1000-1500 Hz -60/65 dB 1500-3000 Hz -80/70 dB 3000-4000 Hz -80/80 dB >4000 Hz -110 dB/95 dB Equipment unable to produce sounds that I can detect - essentially deaf above 4-KHz. testing speech recognition without hearing aids I get about 50% understanding - mostly via right earl My hearings are 22-ch A/D and we made some radical adjustments including a feature that translated some sounds at high freq to a lower freq where I have better hearing. Anti-feedback is right on margin which would explain sensitivity to the CM500 headset. She made several adjustments to equalize my hearing for each ear. Really works much better so will be interested to see how that affects hearing weak-signals (aka eme signals). Probably a good point to end this discussion on the list. Contact me off list if you want further comment. 73, Ed - KL7UW http://www.kl7uw.com Dubus-NA Business mail: dubus...@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] FS: KPA500/KAT500
Elecraft KPA500 Amp and KAT500 Tuner Combo has sold. Thanks for all the inquiries. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] FT8 Upgrade
On 11/28/18 at 4:54 PM, j...@audiosystemsgroup.com (Jim Brown) wrote: On 11/28/2018 3:28 PM, Mike Harris via Elecraft wrote: I installed v2.0.0-rc4 which locks you into 77 bit messages and found very little decode action on my waterfall so I reverted to v2.0.0-rc3. If you're not part of the solution, you're part of the problem. :) If you're not part of the solution, you're part of the precipitate. :-) In this case, they want everyone to upgrade quickly. It will be interesting to see how successful they will be. Will there be a significant rump group of people who stick to 1.x, probably running it on Windows XP or even 95, or will most people migrate within a month or two? (Says the guy who tries to keep his software up to date, but has some 32 bit programs that Apple is determined to make not run.) 73 Bill AE6JV --- Bill Frantz| I like the farmers' market | Periwinkle (408)356-8506 | because I can get fruits and | 16345 Englewood Ave www.pwpconsult.com | vegetables without stickers. | Los Gatos, CA 95032 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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
Call support! Sent from my iPhone ...nr4c. bill > On Nov 28, 2018, at 6:58 PM, Bill Johnson wrote: > > Larry, not enough info to help out. If you have followed the manual and > experienced this you have something very serious happening. You probably > don’t have good load. If you have a dummy load, then connect output to it > and try again. A call to tech support would be best bet in your case. > > 73, > > Bill > K9YEQ > > -Original Message- > From: elecraft-boun...@mailman.qth.net On > Behalf Of Larry > Sent: Wednesday, November 28, 2018 5:07 PM > To: elecraft@mailman.qth.net > Subject: [Elecraft] KPA1500 > > My KPA1500 faults on all bands and goes offline. The reset button quickly > gets it back up only to fault again. The error message is: > >Fault: 12V supply >10.8 volts > > The line voltage is stable with a pair of #10’s going to the breaker box. > > Anybody got any ideas before I call support? > > Larry, WA9MAG > > > Sent from Mail for Windows 10 > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto: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 k9...@live.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 n...@widomaker.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] FT8 Upgrade
There's a third option ... maybe you just don't care about the problem or its solution. [:-) 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County On 11/28/2018 4:54 PM, Jim Brown wrote: On 11/28/2018 3:28 PM, Mike Harris via Elecraft wrote: I installed v2.0.0-rc4 which locks you into 77 bit messages and found very little decode action on my waterfall so I reverted to v2.0.0-rc3. If you're not part of the solution, you're part of the problem. :) 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 k6...@foothill.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] FT8 Upgrade
On 11/28/2018 3:28 PM, Mike Harris via Elecraft wrote: I installed v2.0.0-rc4 which locks you into 77 bit messages and found very little decode action on my waterfall so I reverted to v2.0.0-rc3. If you're not part of the solution, you're part of the problem. :) 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 arch...@mail-archive.com
[Elecraft] K3/0 mini LCD Adjust for vertical mounting -- HOW TO??
Hello All, I have a K3 and a K3/0 mini control head. They are both mounted with the front panel vertical in my shack. That's the natural way the K3 sits, but not the K3/0 mini. The K3/0 mini is designed for use primarily in a portable setting with the display at a shallow angle to the desktop. My problem is the K3/0 mini display is quite washed out in the vertical position even with the LCD Adjust Menu entry set to 100. At the minimum setting of 2 the display is virtually blank when viewed directly on at eye level. Does anyone know of a "Super LCD Adjust" menu setting that will override the design tendency of the K3/0 mini to only be used at shallow angles on a desktop rather than at eye level? Thanks much and 73! -- Courtney KD6X __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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
On page 44, the manual suggests this for a 12V fault: Verify the DA-15 Control Cable is firmly installed on both Power Supply and RF Deck. Tighten thumbscrews fully. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Nov 28, 2018, at 3:07 PM, Larry wrote: > > My KPA1500 faults on all bands and goes offline. The reset button quickly > gets it back up only to fault again. The error message is: > > Fault: 12V supply > 10.8 volts > > The line voltage is stable with a pair of #10’s going to the breaker box. > > Anybody got any ideas before I call support? > > Larry, WA9MAG > > > Sent from Mail for Windows 10 > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto: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] KPA1500
Larry, not enough info to help out. If you have followed the manual and experienced this you have something very serious happening. You probably don’t have good load. If you have a dummy load, then connect output to it and try again. A call to tech support would be best bet in your case. 73, Bill K9YEQ -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Larry Sent: Wednesday, November 28, 2018 5:07 PM To: elecraft@mailman.qth.net Subject: [Elecraft] KPA1500 My KPA1500 faults on all bands and goes offline. The reset button quickly gets it back up only to fault again. The error message is: Fault: 12V supply 10.8 volts The line voltage is stable with a pair of #10’s going to the breaker box. Anybody got any ideas before I call support? Larry, WA9MAG Sent from Mail for Windows 10 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 k9...@live.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] FT8 Upgrade
Not quite right. FT8 v2.0.0-rc3 is compatible with v1.9.1 as long as you do NOT check: "Always generate 77-bit messages" and "Decode only 77-bit messages" under the F2 > Advanced tab. I installed v2.0.0-rc4 which locks you into 77 bit messages and found very little decode action on my waterfall so I reverted to v2.0.0-rc3. It is advised that -rv3 cannot be used after 30 November. Is it software bombed and will stop working, time will tell. I have downloaded rc5 but as yet haven't bothered to install it and might just pass over it to the general release v2 when I feel it's worth doing. Regards, Mike VP8NO On 28/11/2018 17:20, Jim Brown wrote: While V 2.0 is currently in Beta, it's well-advanced beta, and works very well. Those using 1.9 cannot copy or transmit to stations using V 2.0 and those using the latest V 2.0 betas cannot copy stations using V 1.9. The non-beta release of 2.0 is scheduled for Dec 10. (Early 2.0 beta versions DID allow 1.9 and 2.0 users to communicate, but this capability has been removed to allow the final version to work better.) Users are encouraged to switch to the new version as soon as possible. The only downside is that most users are still using V 1.9, so you won't be able to work them, but this will gradually change as more users upgrade, and the transition will happen more quickly as more users upgrade. K1JT's Quick-Start Guide is here. https://physics.princeton.edu/pulsar/k1jt/Quick_Start_WSJT-X_2.0.pdf Links to installation packages are here. https://physics.princeton.edu/pulsar/k1jt/wsjtx.html 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 mike.har...@horizon.co.fk __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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
My KPA1500 faults on all bands and goes offline. The reset button quickly gets it back up only to fault again. The error message is: Fault: 12V supply 10.8 volts The line voltage is stable with a pair of #10’s going to the breaker box. Anybody got any ideas before I call support? Larry, WA9MAG Sent from Mail for Windows 10 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] FT8 Upgrade
And there are 3 upcoming events for the newest version of WSJT-X - and the first one is tonight from 0200 - 0300Z. This is a "mock" contest. The 2nd one - also a mock test - is this Friday evening (NA time) from 0200-0300Z. Both of the above test contests will take place on 7078 and 14.078 kHz and require thus use of either -rc4 or -rc5 although -rc5 is preferred as it i sexpected to be the final beta version before the finished V2 is released in mid-December. These versions allow for the contest exchange used in the RTTY Roundup. The first actual contest using FT8 exclusively is the FT8 Roundup taking place this weekend described here: https://www.rttycontesting.com/ft8-roundup/rules/ If you plan to participate be sure to carefully read this link as well: https://www.rttycontesting.com/ft8-roundup/preparation/before-the-contest-starts/ 73, John AE5X https://ae5x.blogspot.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] For Sale P3 with SVGA, TX Monitor
The P3 has been Sold. Tnx & 73 Paul w2eck __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] FT8 Upgrade
Users of FT8 should be aware that K1JT's WSJT-X development team has been busy with version 2.0. The new version makes changes in the digital format of FT8 and MSK144 that make it INCOMPATIBLE with older versions. The changes have been made to allow a few more characters to be transmitted, to allow for /R to indicate Rovers, to allow for contest exchanges for Field Day, RTTY Roundup, and VHF contests, and to allow for more complex and non-standard callsigns. V 2.0 also includes better error checking, resulting in fewer false decodes, and it eliminates the grid wierdness that occurred in V 1.9 when one station was using Contest Mode and the other was not.. While V 2.0 is currently in Beta, it's well-advanced beta, and works very well. Those using 1.9 cannot copy or transmit to stations using V 2.0 and those using the latest V 2.0 betas cannot copy stations using V 1.9. The non-beta release of 2.0 is scheduled for Dec 10. (Early 2.0 beta versions DID allow 1.9 and 2.0 users to communicate, but this capability has been removed to allow the final version to work better.) Users are encouraged to switch to the new version as soon as possible. The only downside is that most users are still using V 1.9, so you won't be able to work them, but this will gradually change as more users upgrade, and the transition will happen more quickly as more users upgrade. K1JT's Quick-Start Guide is here. https://physics.princeton.edu/pulsar/k1jt/Quick_Start_WSJT-X_2.0.pdf Links to installation packages are here. https://physics.princeton.edu/pulsar/k1jt/wsjtx.html 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 arch...@mail-archive.com
Re: [Elecraft] PROPOSAL: K2/10 Battery LiPO / 8AA carrier option
John, Yes it is almost the KX2 battery. The nice thing about using the KX2 battery is that it plugs into the power jack in the back of the K2 - no need to mount it inside. Get the charger from Elecraft and you can unplug the battery and charge it without opening the K2. 73, Don W3FPR On 11/28/2018 11:53 AM, John Harper wrote: Isn't this essentially a KX2 battery (ie, same cell type & number of cells)? John AE5X https://ae5x.blogspot.com But I would choose Li-Ion something with less max current and PCB board for safety and reliability. Like:https://www.batteryspace.com/li-ion-18650-battery-11-1v-2-6ah-28-86wh-4-2a-rate-3s-s-battery-module---un38-3-passed-ndgr.aspx __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 arch...@mail-archive.com
Re: [Elecraft] KPA-1500 issues
In the link I provided earlier (including some references) I point out some of the pitfalls and error sources so that is a possibility. But I still contend that, with a lossless line anyway, the impedance of a load, resistive or otherwise, is the same at either end of a 1/2 wavelength line, or integer multiple thereof. A quarter-wavelength line has the "magical" property of inverting impedances, best seen on a Smith chart. But the rotation is around a circle of constant SWR, with radius=rho. Of course better instruments as a rule make better (more accurate) measurements. I have several vector analyzers, an N2PK that I built years ago, an SDR-Kits by DG8SAQ, an FA-VA5 by DG5MK, an AA-55 Zoom by Rig Expert and if it ever clears US Customs, an FAA-450 by EU1KY. Any of these, used with appropriate care, is more than accurate enough for any normal transmission line/antenna evaluation and remarkably inexpensive. Wes N7WS On 11/27/2018 9:33 PM, K9MA wrote: I think the point Mike is trying to make is that many SWR meters don't actually measure SWR all that accurately as impedance changes. While the length of transmission line doesn't affect SWR (other than the effect of loss), the impedance at a given SWR does change with line length, and that may cause the indicated SWR to change with some instruments. I wonder if an antenna analyzer, which actually measures impedance, and calculates SWR from that, would do any better. If it measures impedance accurately, it should. 73, Scott K9MA On 11/27/2018 21:34, Wes Stewart wrote: I fail to see what that will prove. The only length that will do anything exciting is the 1/4 wavelength line and even that doesn't affect the SWR. The other two will just repeat (less loss) on the input side, what terminates the load side. Wes N7WS On 11/27/2018 3:51 PM, Michael Walker wrote: If you truly want to understand SWR, I recommend you pick a frequency and make up a 1/4, 1/2 and 1 wavelength sections of 50ohm coax. Then measure the SWR at those points into various different resistive loads, like 10, 25, 50, 75, 100, 150 and 200 ohms. I think you will find the results very interesting. Mike va3mw __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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...@sdellington.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 arch...@mail-archive.com
Re: [Elecraft] GROUNDING and BONDING
On 11/28/2018 6:24 AM, Bob McGraw K4TAX wrote: The book GROUNDING and BONDING for the Radio Amateur, by H. Ward Silver, N0AX is one of the most complete and concise publications on the topic. Ward and I collaborated extensively on that book. 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 arch...@mail-archive.com
[Elecraft] KPA1500 Issues and Failures
I was an early adopter and ordered the KPA1500 back last August. It arrived in early May this year. It failed in October after 6 months of usage. I’m using the same antennas with the KPA500/KAT500 without issues, as I did for a year before the KPA1500 arrived. My questions: Was the KPA1500 released too early without sufficient testing? Why does the KPA1500 see the antennas differently? I have 2 Buckmaster dipoles and a GAP Vertical which all work well with the KPA500/KAT500. All with low set readings. Is this going to be a recurring problem with this new amp? It cost me an additional $210 to return the amp back to Elecraft under warranty. I haven’t seen any comments from Elecraft about failures and what is being done to address the issues. All my other Elecraft gear has been superb and maybe I’ve been lucky... I’m not the smartest guy on the block and this my first big amp so I’m feeling unsure about my last Elecraft purchase. I appreciate this forum... and the group’s advice and feedback. Paul - W1PEF __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] PROPOSAL: K2/10 Battery LiPO / 8AA carrier option
Isn't this essentially a KX2 battery (ie, same cell type & number of cells)? John AE5X https://ae5x.blogspot.com But I would choose Li-Ion something with less max current and PCB board for safety and reliability. Like:https://www.batteryspace.com/li-ion-18650-battery-11-1v-2-6ah-28-86wh-4-2a-rate-3s-s-battery-module---un38-3-passed-ndgr.aspx __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] PROPOSAL: K2/10 Battery LiPO / 8AA carrier option
This battery has very high current potential but does not have a limiting board. You can connect it to K2 via a resettable 3A fuse. But I would choose Li-Ion something with less max current and PCB board for safety and reliability. Like: https://www.batteryspace.com/li-ion-18650-battery-11-1v-2-6ah-28-86wh-4-2a-rate-3s-s-battery-module---un38-3-passed-ndgr.aspx For many years I used 3S1 combination using flat cells inside my K2. It was charged at 12.8V with 1 A limit and the connection to K2 was by a resettable fuse. Keeps > 11V for about half the charge. Never a problem despite travelling across all continents. Very light. But I was always afraid that something would short causing trouble. With batteries with PCB for limits, the risk is far lower. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Phantom signals
Hi again, But if they are fixed (not following the tuning of the K3) you should be able to tune to them and hear them in your K3 without any computers or SDRs running. So Don's advice to turn everything except the K3 off seems sound to me. AB2TC - Knut Don Wilhelm wrote > Pete, > > Any chance you can borrow a P3 to see if those spurs are present both > with and without the computer? > That would be a good test if you can manage it. > > The other thing that may help is to bond the K3 to the other gear, > following the paths of the IF out coax and also the audio cables. Bond > from box to box rather than trying to "ground" everything to a single > point (which may cause additional noise pickup. Use the information on > that subject from Jim Brown K9YC. > If everything else other than the K3 is plastic cased, bond to BNC > connector shells and/or computer I/O connector jackscrews. > > 73, > Don W3FPR > > On 11/27/2018 9:44 PM, N4ZR wrote: >> >> Trouble is, my computer supplies N1MM+, including its spectrum >> display. Catch 22 >> >> > -- 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] For Sale P3 with SVGA, TX Monitor
P3 Panadapter #3393 for K3S, K3 and other rigs with P3SGVA - P3Video/FFT Adapter installed, in excellent condition with latest firmware.Includes: P3SVGA for large screen monitor. P3TXMON- TX Monitor Power and Waveform Display Adapter for the P3; DCHF-2000 1.8-54Mhz 2000w; Directional Coupler; RS232 P3 to K3 cable; K3 IF Out to P3 cable; K3 to P3 power cable; Owner’s Manual; From non-smoking, no pets home, never used outside shack. Additional photos upon request. $850 shipped from Savannah GA; PayPal OK Paul w2eck __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] GROUNDING and BONDING
The book GROUNDING and BONDING for the Radio Amateur, by H. Ward
Silver, N0AX is one of the most complete and concise publications on the
topic. It covers most all aspects of the topic specifically for ham
radio applications. Written in easy to understand language with
pictures and drawings makes for an ideal addition to any hams library.
It is available from ARRL Publications.
{Disclaimer: I have no affiliation with the author or ARRL other than
being an ARRL member. }
73
Bob, K4TAX
On 11/27/2018 4:46 PM, Don Wilhelm wrote:
Instead of grounding each piece of equipment separately to a ground
rod, try "bonding" instead. Connect the KX3 to the PX3 with heavy
wire (or braid), then connect the KX3 to the KXPA100 with heavy wire
- from the KXPA100, connect to the ground rod.
You should see a reduction is audio noise on the PX3 (which can be
made worse by separate ground wires) and the KXPA100 and KX3 should
'play' better together.
If you want more information on bonding, look at the documents
produced by Jim Brown K9YC - he posts frequently on this reflector.
One thing to keep in mind - grounding everything (the KX3 and PX3 are
'grounded" by virtue of the bonding wires) will not do anything about
RF pickup - Mother Earth is not a sink for RF. The grounding is for
AC main safety and some protection against lightning and static
charges (but not a direct strike).
73,
Don W3FPR
On 11/27/2018 4:58 PM, richard gilley wrote:
Hi,
Following F. Cady advice on grounding the station equipment to a
common bus, I did so. My set up includes a KXPA100 with the ATU, the
KX3 and PX3. Now I noticed that the KX3 does not always indicate the
same antenna as the KXPA100 when I switch bands. Sometime it does
and then does not, or will change after 5 to 10 seconds. I have a
Vertical for 30 meters, and a Dipole for 40 and 20 meters, the
KXPA100 switches immediately.
I have powered down all the equipment, restarted and sometime this
does the trick and all is well. But sometime it does not. If I
remove the ground from the KX3 and the PX3 the issue goes away.
The equipment ground is #18 stranded, < 10” to the bus, the bus has a
copper braid to the KXPA100, the antenna grounds and on to the
station ground rod 8’ feet outside the shack.
At the moment all is OK. I just do not know the root cause. Any
ideas or thoughts.
R Gilley
AD1G
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Re: [Elecraft] FS: New CM500 headset
The National Health Service in the UK tends to use slightly modified commercial designs that are maybe a couple of years old, and their input costs are something like that. However, I don't think self fitting would be allowed in the UK, as setting the gain too high can cause unnecessary damage to residual hearing, and many new users would set it too low to be effective. Mobile phones are also not accurately calibrated. The other reason for not allowing self fitting of real hearing aids is that hearing loss can be a warning of more serious things, like brain tumours, and a proper audiologist will refer patients for more detailed investigation if there are hints of that. Also, this is only going to work with open fit aids. You can have just a few sizes of fitting. They do tend to work well for people with age related loss, where most of the loss is in the high frequencies. People with more complex losses require custom made ear moulds, and the most difficult cases actually require aids that change the frequency of the sounds. It looks like Olive only address the easy end of the market. I'm not even sure it would be classified as a hearing aid in the UK (hearing aids are prescription only - RX Only in US terms). I can find none of the technical documentation that I would expect for a normal aid, and, in particular, I can find no graphs showing the performance envelope. It looks like it has something more like an in the ear headphone fitting than the sort of fitting you would expect on a normal hearing aid. It has enough output to damage hearing if used incorrectly. It looks to only have one microphone, and loss of directionality is one of the big problems with using hearing aids. Multiple microphones allow some beam forming. Hearing aid pricing is complex, because the marginal cost of manufacture is quite low, but there are are high R&D costs for the noise reduction and automatic adaptation. A lot of the R&D will be recovered by private buyers paying a large premium for the latest technology (a bit like films take a lot from theatre audiences, but eventually are sold cheaply to TV stations). Also the service costs in prescribing and maintaining can be high. For the NHS these dominate the cost of the physical instruments. -- David Woolley On 28/11/2018 02:48, John Simmons wrote: A friend of mine told me about the new Olive hearing aids coming from S. Korea. They are currently being sold only on Indiegogo and one ear is $139 instead of the multikilobuck jobs. I'm interested to hear how they work for him. You configure the amplification and response curves using a smartphone app. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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-Utility worked in May but not now.
Why 4800 baud? I think it works better at 34.8. And the KXUSB that I got with my KX3 was a FTDI based unit. Unplug all USB devices except the one for the radio. See what Device Manager has to say. Sent from my iPhone ...nr4c. bill > On Nov 27, 2018, at 11:58 PM, JEROME SODUS wrote: > > Hello, > > > As the subject-line states, my records show that all was good this past May > when I checked if I was up-to-date firmware-wise. > > Also, in September, for the power-up sequence, I successfully used the > Utility to put in a banner with my call-sign. > > > The idea today was to get DX-Lab and its WinWarbler connected to the KX3. > > I had read that the KX3's CW-decoding could be displayed in WinWarbler. > > > But now, I have an issue and I'm not even out of the starting-gate. > > The Utility's tab "Firmware" shows that wheels are spinning in "Attempting to > connect KX3 on port COM3 at " using various bit/s speeds. > > The KX3 is set at 4800 bits/s. > > > So, I used Win10's trouble-shooting and got this message: > > The error I get is "Prolific USB-to-Serial Comm Port (COM8) has a driver > problem." > > > I'm mystified that I see COM3 in one place and COM8 in another. > > I have no idea what to do next. > > I was horrified to read that I had a Prolific USB adapter; so much bad press > about Prolific. > > TIA for any help. > > 73 Jerry KM3K > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto: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 n...@widomaker.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
