Windy, I usually push the ATU tune whenever I change bands but have never relied upon the tuner to manage.
Here's the manual: ATU (KAT3) If you have the KAT3 antenna tuner installed, you can select ANT1 or ANT2 by tapping ANT . Hold ATU to select AUTO (autotune enabled) or BYPASS. If the ATU icon is on, the antenna can be matched for best SWR by tapping ATU TUNE . Up to 30 ATU settings are saved for both antennas on every band. The ATU icon will flash briefly whenever new settings are automatically loaded. Tapping ATU TUNE a second time within 5 seconds of a match attempt will retry using a more extensive search. This may improve the match when using high-SWR or narrow-band loads. I don't believe this answers the question as to when the tuner invokes an automatic retune, however. 73, Bill K9YEQ -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of KM5Q Sent: Thursday, October 22, 2009 2:02 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 KAT3 Antenna Tuner Tutorial Sure Bill. When feedline is wet, I alter some band segments by retuning as needed, as I operate. Then when dry, I encounter the re- tuned segments again when I encounter a high-SWR after I QSY. So then I re-tune, of course. As far as I can observe, that seems to wipe out the "wet" setting that was recorded at some nearby frequency. Seems OK. I just have to accept that I don't know where the segments are, and so I keep an eye on the SWR when I QSY (normal habit anyway). I'll await any more helpful info from the creators. I accept that it may be simple "just keep doing what you are doing". It isn't a problem, I'll await any further understanding of the rules that the ATU memories follow. Thanks / Windy KM5Q Bill K9YEQ wrote: Thu, 22 Oct 2009 08:09:57 -0700 > Your feedline impedance changes when wet and the memory will change > in the > tuner. I would expect that is quite normal and a good thing! > > > 73, > > Bill > K9YEQ > K2 #35; KX1 #35; K3 #1744; mini mods > ATS-3B > > -----Original Message----- > Subject: Re: [Elecraft] K3 KAT3 Antenna Tuner Tutorial > > Fellows, > I'm not asking you to go off-topic with advice on my feedline. I'm > asking only about the behavior of the ATU memory system after I've > retuned a few band segments to wet condx, then condx return to dry. > > Thanks > Windy ______________________________________________________________ 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 ______________________________________________________________ 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