Hi Holger: I just finished reading an article that may answer your question: http://www.arrl.org/files/file/Technology/tis/info/pdf/9501046.pdf
If I'm understanding it correctly, the inductor's Q factor is the issue. The Cout capacitance should be set to the highest value possible with the L and Cin supporting that for lowest SWR. I think this means the higher the inductor's Q the less losses seen in the matching network. Does this mean the higher the inductance (higher inductive reactance) the higher Q and the lower loss? That's how it is looking to me. I don't know what kind of matching network is used in the Elecraft ATU. I'm hoping someone with a better understanding can verify or correct what I've said. 73, Kevin K4VD On Sat, Oct 1, 2016 at 10:39 AM, Holger Schurig <holgerschu...@gmail.com> wrote: > 2016-09-30 21:59 GMT+02:00 Fred Jensen <k6...@foothill.net>: > > > This is reminiscent of one of the five volumes in Douglas Adams' trilogy, > > "The Hitchhikers Guide to the Galaxy." > > > I understand that either my english is very weird. Or that I can't explain > things good. > > But that you and Davidthink that they must make a 42 joke on this is > definitely weird. > > > The question was: I can query the KX3 ATU for what it settled. I have an > end fed antenna and so I have various variables: > > - used tap (1:4, 1:9, 1:16) > - some random length wire > - band > > And forget an "optimal wire", I might just have switched from 12m to 10m. > Or back. Depends on what I find, propagation ... so assume that my wire > is just some random wire, not necessary optimal for the band. And also, in > the context of my question, this is entirely irrelavant. I was never asking > about wire lengths, this is easy to read up. Okay, back to my scenario: I > just switched the new band. I'm not going to let my portable glass fiber > down because of that and change the wire length! Instead I do what a lazy > OM does: I press the TUNE button and the internal magical antenna tuner > does it's job. It's actually so magic, that it will do it's job on all > taps. On the 1:4 tap, on the 1:9 tap. And on the 1:16 tap. Woah! But I can > query the ATU for what inductance and capacitance it used to do the match. > And so my simple question was: would a lower inductance have less losses > inside the ATU? > > And please: if you don't know the answer of if you think that there is no > answer, than just stay silent. > > > 73, Holger > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto: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 ke...@k4vd.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
