[Elecraft] Elecraft CW Net Announcement
Good Evening, It was a sunny, mild week with a few days with morning fog. No rain fell so the fog is helpful. The local bees pollinated the thimble berry bushes well. A lot of blossoms have set fruit due to them. Hopefully I get a few handfuls later this summer. The salmon berries are ripening; early fruit is very sour. Some wild strawberries are popping out too. Oregon grape has finished flowering and has set fruit. You can eat them but they're very seedy. It does make good jam if you strain some of them out. The sun has many spots with a number of active areas facing our way. Solar flux is at 171 at the moment. The sun is really waking up, it tossed another CME at us. There is a geomagnetic storm watch a few days from now if it hits. I expect the QSB will be moderate to heavy. Noise will be up too. However, the signals seem to have their own trials with propagation. Please join us on (or near): 14050 kHz at 2200z Sunday (3 PM PDT Sunday) 7047 kHz at z Monday (5 PM PDT Sunday) 73, Kevin. KD5ONS - All this I know and do myself avow. Well may Penelope in form and brow And stature seem inferior far to thee, For she is mortal, and immortal thou. Yet even thus ’tis very dear to me My long-desired return and ancient home to see. “But if some god amid the wine-dark flood With doom pursue me, and my vessel mar, Then will I bear it as a brave man should. Not the first time I suffer. Wave and war Deep in my life have graven many a scar. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.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 8 pole filters for sale
Everything has been sold now except the 250 hZ and 2.8 kHZ filters. They'll only be available for a short period so speak up if you want one. These are as new Elecraft K3s 8 pole filters made by Inrad (as I understand it). The 250 hZ is razor sharp and the 2.8 is the wide SSB filter, great for QSO's. Cheers, Doug W5JV Visit https://www.qrz.com/db/W5JV for some great vacuum tube finds. From: Doug Hensley Sent: Friday, July 15, 2022 7:41 PM To: Elecraft List Subject: K3s 8 pole filters for sale I have one more set of K3s 8 pole filters for sale. These tend to go quickly so speak up if you need one: These are in the following widths and are as new: 250 hZ, 2.1 kHZ, 2.8 kHZ and 13 kHZ (for FM) No paypal. M.O. or bank check only. Thanks, Doug W5JV __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 Synthesizer, KSYN3A
The Boatanchor AM guys are going to be on the air making Qs; the rest of us will be waiting for parts. ;-) Wes N7WS On 7/16/2022 8:07 AM, Geert Jan de Groot wrote: On 15/07/2022 18:48, elecraft-requ...@mailman.qth.net wrote: I have a K3 with the original synthesizer boards. I am looking for a pair of the new KSYN3A boards. I have spoken to Elecraft tech support and I am on their list in case they decide to make a run of new synthesizer boards. The KSYN3A design is based on microcontrollers from Microchip. I've ordered some controllers at Microchip myself (of a type that is much more common than the ones used in KSYN3A) and today I received the 5th "your ship datum has changed" notice. Note, we're talking delivery in 3Q2023, but the next notification will be 4Q2023; my first delivery notice was for June 2023. And my order is small. The market is still absolutely bonkers. At QRL, I know about at least a dozen re-design efforts to change designs to make meet the semiconductors that we still can get. Wayne reported similar difficulties in his status report three months ago. And it doesn't make sense to keep reporting "it is going to come..." because the ship dates keep shifting and part delivery promises, even contractual, keep changing. The industry expects things to quieten down a bit next year, but we'll still need to catch up the backlog. I fully understand Wayne not reporting any ship dates. I would report only if I have all parts on my desk, for all parts needed in the design. Even mundane things like connectors (DC connectors) now yield delivery time of more than a year out. So it goes, Geert Jan __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 Synthesizer, KSYN3A
On 15/07/2022 18:48, elecraft-requ...@mailman.qth.net wrote: I have a K3 with the original synthesizer boards. I am looking for a pair of the new KSYN3A boards. I have spoken to Elecraft tech support and I am on their list in case they decide to make a run of new synthesizer boards. The KSYN3A design is based on microcontrollers from Microchip. I've ordered some controllers at Microchip myself (of a type that is much more common than the ones used in KSYN3A) and today I received the 5th "your ship datum has changed" notice. Note, we're talking delivery in 3Q2023, but the next notification will be 4Q2023; my first delivery notice was for June 2023. And my order is small. The market is still absolutely bonkers. At QRL, I know about at least a dozen re-design efforts to change designs to make meet the semiconductors that we still can get. Wayne reported similar difficulties in his status report three months ago. And it doesn't make sense to keep reporting "it is going to come..." because the ship dates keep shifting and part delivery promises, even contractual, keep changing. The industry expects things to quieten down a bit next year, but we'll still need to catch up the backlog. I fully understand Wayne not reporting any ship dates. I would report only if I have all parts on my desk, for all parts needed in the design. Even mundane things like connectors (DC connectors) now yield delivery time of more than a year out. So it goes, Geert Jan __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Using the K3s Tune button causes a growing SWR on my KPA500
From what has been stated, this not a true end fed Half wave using a 9-1 balun. That is the issue. The balun needs to be a 49-1 ratio to properly feed an EFHW antenna. The method you are using requires a different counterpoise than an EFHW. EFHW are efficient at one frequency and direct harmonics. So, the balun is likely heating up. The 53' antenna is a random wire and needs to have a proper counterpoise. Random end feds are different birds. Bill K9YEQ -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of David Gilbert Sent: Friday, July 15, 2022 10:42 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Using the K3s Tune button causes a growing SWR on my KPA500 No. Over time the current does not "back up". Something in your system is heating up. My bet would be that your toroids used as common mode chokes are heating up due to the very high voltages that exist at the end of an end fed half wave antenna. It's not likely to be a current problem since there isn't much current at all at the end of a half wave antenna ... unless yours isn't actually a half wave at whatever frequency your feeding it. It is also possible that something in the Palstar tuner is heating up, but it uses decent looking inductors wound on ceramic forms so I really doubt it. I'm guessing that you aren't using any sort of counterpoise with your EFHW. If you did, it would have the effect of making your EFHW look a bit more like just a severely off-center fed dipole with the result that the voltage (and possibly the mismatch) would be less. In any case, don't go key down any longer than you need to if you don't want to fry the toroids before you get a chance to fix the problem. 73, Dave AB7E On 7/15/2022 7:53 PM, Peder Kittelson wrote: > When on 80 meters, the longer I hold the tune button down the higher > the SWR goes to the point the KPA500 folds back with warnings. I > don't usually hold down the tune button longer than about 5-6 seconds. > > I use a Manual Palstar BT1500A tuner which does a good job of tuning > my EFHW wire antenna. So the initial tune is very good. I sometimes > will hold down the Tune button on the K3s for maybe 5-6 seconds with > the initial tune at 1-1 SWR. > > The KP500 first shows a 1-1 SWR. Then 1.2-1, 1.3-1 and so on. I stop > when it reaches 1.5-1. > > I suppose that initially the transmitting wire sends out the signal > and over time the current backs up. I have torroids in place to > prevent RFI coming back down the antenna transmission line. > > I only use the system for CW. So when I send, the problem does not > escalate to the point of a dangerous SWR. > > I wonder if this is a normal problem when holding the tuning button > longer? And since I do not hold down the key for a long period of > time it doesn't develop. > > Still, I am looking at solutions. And I am concerned. > > Your thoughts? > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.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
