Capacitors should usually have less loss than inductors. This is not true for manual turners with polyvaricons. Those are fairly lossy capacitors.
wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Oct 1, 2016, at 10:43 AM, Kevin - K4VD <ke...@k4vd.net> wrote: > > 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 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
