Re: [Elecraft] Blinking KX3?
Yes, Frank. It has been blinking for a million years...or at least for as long as you have had power on the radio: Single blink every .5 sec = KX3 off, KXBC3 in ultra low power mode. Single blink every 2.5 sec = radio is on, KXBC3 normal, not charging batteries. Single blink every .75 sec = charge cycle in progress. Triple blink every 2.5 sec = charge cycle has been suspended due to temperature or insufficient external voltage. 73, Mark, ars: KE6BB -- Original message--From: Frank Krozel So it has been a million years since I opened up my KX3...Inside the left hole that uses a screw to hold in the paddle, there is a “blinking yellow light”.Never saw that before is that normal? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.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] Vanity call question
Many vanity calls are chosen because they are easier to copy, especially in the case of CW. My call is NOT an example of an "easy to copy on CW" call, having too many dahs and strings of dits causing the little short "e" to be missed. It is also NOT a vanity call. Mark, ars: KE6BB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX2 - KX3
Re: Can anybody tell me why I should buy also a KX2? I am considering buying a KX2, and using my KX3 as my dedicated home station. That would eliminate the need to constantly pug and unplug cables when I go into the field. I have been operating my KX3 in the field with the IF shift engaged (which also bypasses the roofing filters) to simulate the KX2 receiver (I think), and it works great. Now, to find the money ;-) Mark, ars: KE6BB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] New products
RE: Below John says that airline and military pilots use touch sreens, and he is right.This is incorrect. In my 45 years of military and airline aircraft engineering experience, I have not seen touch screens utilized to any significant extent in military or commercial aircraft displays. They have all used "programable hardware keys". Look carefully at their displays you will see a row of hardware keys on the bezel that surrounds the display. The use of these programable hardware keys gives the best of the touch screen world where you can change the key function based on the displayed options, without sacraficing the ergonomic advantages of a real key. The labels and functions of the keys change, but you press the hardware keys It is really more than simply tactile feedback. The ability to rest a gloved finger on the key before pressing is essential in the g-loaded world of flight. Note that in many cases the keys have short guards, or more correctly, guides between the keys to help prevent dual or incorrect key presses. Mark, ars: KE6BB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.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 internal battery problems
Re: With increasing cycle count, individual cells are showing differences. Cycle count agravates the differences, but the most common CAUSE is a failure to FULLY CHARGE the series set of cells, so some of the cells never reach their FULLY CHARGED voltage. Damage occurs during use as the cells are discharged. The cells that were not fully charged reach the damaging voltage of <1.0V per cell first, possibly before the KX3 low voltage warning is set. Below that voltage, they will be damaged and will never again have the capacity of the good cells. Re: If you don't charge them individually, these differences are getting bigger, as reflected by the numbers you posted. Individual cell charging is one way to prevent damage, but the KXBC3 can manage this problem as well, saving the cost and trouble of an external charger. When charged with a properly designed constant current charger such as the KXBC3, NiMH cells in a series configuration are self leveling. Cells with a higher charge will reach their fully charged CHARGING voltage of about 1.5v per cell (varies somewhat with temperature, charge rate, etc.) and then level off. The lower voltage cells will then continue to rise to a similar FULLY CHARGED voltage if they are healthy. Eventually they will all be at the CHARGING voltage. With the KXBC3's 200mA rate, 12 hours will usually do it for 2000mAH cells, and 16 hours for 2500mAH cells. I do not mean to knock external chargers or battery managers. I am simply saying that YOU, along with the KXBC3, can learn to manage rechargable NiMH cells. This hobby is about learning, isn't it? BTW, I just checked my 3.5 yr. old Eneloop 2000 LSD cells, and they are all within .04V resting. I never disharge the set below 8.8V. Mark, ars: KE6BB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.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] Feedline Loss With Mismatched Loads
Re: K6OIK has published on the subject. Thanks, Jim. Lots of material there. I am going to put Mr. Maxwell's book back on the shelf and do some studying! Mark, ars: KE6BB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.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] Feedline Loss With Mismatched Loads
RE: “P.S. I don't subscribe to the notion that quality coax runs of < 150 feetmake it "ok" to have the ATU in the shack while operating an antenna on multiple bandswhat technical evidence of that posit do you have to share” The best source is "Reflections" by Walter Maxwell, W2DU, originally published as a series of articles in QST (difficult to read due to the poor scans) and then published by ARRL as a book. The latest edition is "Reflections III" published by CQ Communications, but currently sold out. If you really want to understand what is happening on a transmission line, how an ATU works, etc., then this is the book you should read. Be warned, though, it is NOT an "easy read", but more of a "great study". It requires a lot of thought and re-reading to absorb, but is well worth the effort. Mark, ars: KE6BB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.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
