Hi Don, yes I agree with you that if I measure the swr between the radio and the antenna I will have the same value I measured with the antenna analyzer.
The Automatic Tuner is installed and the mane ATU MD on AUTO My point is: Why do I read ON THE KX3 swr GRAPH a peak value close to 2.0 when I transmit? Why do I read the real SWR of the antenna - in my case 1.4 - when I hold XMIT to activate TUNE? Thanks Luca On Sep 18, 2012, at 7:12 PM, Don Wilhelm <[email protected]> wrote: > Lucia, > > You say that you had an SWR of 1.4, then used the ATU which lowered the > SWR to 1.0 > OK, That was on the KX3 display. > > Please tell us where you were reading the continued 1.4 SWR. The KX3 > display does not show the SWR during transmit - only during a TUNE. > The SWR shown externally to the KX2 ATU will not change, so if you are > using an external device, you will not see any change in the SWR reading. > > The KX3 ATU will reduce the SWR between the KX3 output PA and the input > to the KXATU3 to the value shown during on the KX3 display during a > TUNE, but the SWR between the KXATU3 and the antenna (as measured by an > external device) will not change. > > 73, > Don W3FPR > > On 9/18/2012 8:14 PM, luca de marinis wrote: >> Hi, >> >> I completed my KX3 #1715 few days ago and today I went to the park and using >> a Buddipole I tried to make some contacts. Buddipole swr was 1.4 on 20m so I >> used the ATU. It worked fine lowered the swr to 1.0 but then I transmitted I >> still could read a 1.4 swr. I moved up and down the band and tuned again and >> every time the ATU started from 9.9 and did the all cycle. Sometime couldn't >> go lower than 1.4. Sometimes after tuning the power was reduced to 2W >> >> Am I missing something. I did a search on the reflector but didn't show >> anything. >> >> Thank you in advance for your help >> >> > > ______________________________________________________________ > 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 ______________________________________________________________ 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
