Hi, Martin makes an important point! The VSWR indicated on the K3 is measured between tuner and PA. The tuner does not influence the VSWR on the feeder.
P-T / LA7NO > On 3. sep. 2014, at 12:18, Martin Storli - LA8OKA <[email protected]> wrote: > > The first thing you need to do is to use the same SWR-meter both at the tower > and at you're K3. > When measurering close to the K3 and if it is a big difference between you're > SWR meter and the K3, the K3 is probably indicating the wrong SWR, or the K3 > tuner is coupled in making the SWR to be something quite different than it > actually is. > > If both SWR-meters show higher SWR in the shack than at you're tower, there > is probably something wrong in the last coax run, hook it up to a dummyload > and measure SWR. The SWR shall normally be lower in the shack than at you're > tower due to the losses in the coax. > > Martin Storli > LA8OKA > Oslo, Norway > > ARCTICPEAK's Radio pages! > http://www.arcticpeak.com/radio.htm > > > ________________________________ > Fra: "[email protected]" <[email protected]> > Til: [email protected] > Sendt: Onsdag, 3. september 2014 2.06 > Emne: [Elecraft] SWR Readings:Differences > > > Good Evening, > This is Mark Griffin, KB3Z and I have some questions regarding the SWR > readings I get at my tower versus what I get on my K3. I will give the SWR > readings that I got at my tower for a 40 meter rotatable dipole at 55 feet. > > Tower: > > 7000 2.2 > 7025 1.8 > 7050 1.5 > 7075 1.3 > 7100 1.0 > 7125 1.1 > 7150 1.3 > 7175 1.6 > 7200 2.0 > 7225 2.2 > > K3 Readings: > > 7000 3.5 > > 7025 3.2 > > 7050 2.9 > > 7075 2.6 > > 7100 2.4 > > 7125 2.3 > > 7150 2.4 > > 7175 2.5 > > 7200 2.6 > 7225 2.9 > > What would cause such a big difference. The cable run from my antenna switch > on the tower to my K3 is only an additional 75 feet. I am using RG-213 cable. > Is there anyway that I can test the SWR reading that my K3 is giving me? > > Mark Griffin, KB3Z > > ______________________________________________________________ > 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 > Message delivered to [email protected] > ______________________________________________________________ > 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 > Message delivered to [email protected] ______________________________________________________________ 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 Message delivered to [email protected]
