The first statement is correct. Length of coax will transform impedance and cause SWR meters to read differently. I've seen this Smith Chart reference before and it makes no sense. You can certainly use your feeder to "match" your antenna. Of course, if SWR meters didn't care what the impedance is then yes, it wouldn't matter where you put it along the line but such is not the case. Steve N4LQ [email protected] ----- Original Message ----- From: "Phil & Debbie Salas" <[email protected]> To: <[email protected]> Sent: Wednesday, November 04, 2009 5:53 PM Subject: Re: [Elecraft] K3 SWR Accuracy - reprise
> "How long is the coax between the LP100 sensor and the K3? This can have > a significant impedance transformation impact as you go to higher > frequencies, leading to a different indicated SWR at each end." > > The impedance changes, but not the SWR. Looking at this on a Smith Chart, > you can see that you just rotate around a constant SWR circle. Minus coax > losses of course, which are negligable when we're talking a few feet at > HF. > > Phil - AD5X > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html -------------------------------------------------------------------------------- No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.698 / Virus Database: 270.14.50/2481 - Release Date: 11/04/09 14:51:00 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
