Bill, >From page 22 of the the K3 owners manual: "Up to 30 ATU settings are saved for both antennas on every band." When you hit ATU TUNE, the K3 stores the tune settings for the KAT3 at the current frequency and for the current antenna.
In AUTO mode, if the K3 determines, on transmit, that the current KAT3 tuning parameters should be replaced, it will automatically load them when you key the transmitter. You can tell this is happening because the ATU icon will flash briefly on transmit. As to how the K3 determines whether to load new parameters, I would surmise that the K3 checks the ATU "map" each time you transmit, checking whether the current set of KAT3 parameters best match the current transmit frequency. If it finds a better match, it loads them. For example, if you have previously hit tune at both 14.020 and 14.170, have been operating at 14.150, and now try to transmit on 14.050, the K3 will automatically load the parameters stored for 14.020. This is conjecture on my part, since I have not seen any documentation of the firmware algorithm. But it seems reasonable and in line with what the K3 actually does. Don Wilhelm-4 wrote: > > That is how it is supposed to work. The "Auto" part of the tuner > function is that it remembers the tuning for 2 antennas for any band. > ----- 73, Stan - KR7C -- View this message in context: http://elecraft.365791.n2.nabble.com/ATU-Question-tp6397013p6398176.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ 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
