On Sep 18, 2012, at 10:00 PM, Matt Maguire <[email protected]> wrote:
> > On 19/09/2012, at 2:47 PM, luca de marinis <[email protected]> wrote: > >>> If you have initiated a tuning cycle with the KXAT3, and subsequently hold >>> the XMIT/TUNE button, and the radio reports a VSWR of 1.4, then this means >>> that the KXAT3 has not matched the impedance of the antenna system. This >>> would be the case, for example, is the KXAT3 was set in bypass mode. >> It is not on bypass mode. > > Just check one more thing: in order to initiate a tuning cycle, you need to > push the "ATU TUNE" button, not hold the XMIT/TUNE button. If the tuning > cycle is successful, you should see an indication "1.0-1" come up on the > screen. Is this what you saw? Yes I tuned pushing ATU TUNE and not holding the XMIT/TUNE. After I tuned and read 1.0-1 I saw the VSWR graph on the KX3 indicating that there was still SWR so I held TUNE to see what the reading was. > >>> If the SWR graph in your KX3 is set to read VSWR, and the KXAT3 has matched >>> the antenna ad reported a VSWR of 1.0, and you see the SWR graph jumping >>> around during transmit, then this could indicate flashover in the KXAT3. >>> Normally this should only happen if the antenna system is very far away >>> from 50 ohms. This is not likely to be the case here, if you indeed >>> measured the VSWR of the antenna system independently with the MFJ antenna >>> analyser, and found it only to be 1.4:1. >> >> This seems to be the case. So is it normal or not? Any idea how to fix it? > > No, this is not normal. If you are quite sure that you have followed the > suggestions given here and the directions in the owner's manual, then the > next step would be to get in touch with Elecraft customer support, who can > lead you through some more detailed troubleshooting. > I will test again tomorrow and try on a dummy load and see if I see something weird. After that I will contact Elecraft as suggested. Thank you Luca > 73, Matt VK2ACL. ______________________________________________________________ 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
