Hi Gernot, your ATU problem looks similar to mine, maybe you changed antennas and some settings for a different antenna are still in the tuner? If this is the case, you probably have to clear the ATU's memories.
Maybe you want to see this discussion: http://elecraft.365791.n2.nabble.com/KX3-antenna-tuner-intermittend-operation-td7573335.html Vy 73, Ralf, DL6OAP Am 29.05.2013 um 23:27 schrieb g...@gmx.net: > Hello everybody, > I used the KX3 with FW 1.47/DSP 1.19 during WPX CW quite a lot. About 500 Qs > on the KX3, 400Qs using the K2. > The KX3 features which outperform the K2 (and many other radios likewise :-) > are IMHO > - no noise clicks when changing filter bandwidth is a great plus to avoid > missing a single dot of the call/report > - dual rx helps if you got stuck on one station (S&P): turn on dual receive, > press A->B, and tune to the next one while listening to the current station, > if finished press A/B and your next station is served > - the stereo sound is less exhausting to listen to (at least to my ears) > - the wheel tuning rate is just perfect. The K2 is a little bit odd in this > case (I have found to setting which I feel really comfortable with) > > On the down side of the KX3, there is still the nasty "ATU off" problem. I > mentioned this before and I thought it could be my antenna. But it isnt - the > K2 was completely happy with the SWR at all times during the contest. The > effect seems to be connected to timing, if it happens the ATU always turns > off at the end of the transmission. It then turns on again, but apparently > with a slightly different setting because you have to press ATU TUNE again to > get the same receive noise level. Occasionally, it also reduced power to 3 > Watts automatically after ATU off. You have to recover to power level to 5W > manually. > The K2 ATU is never complaining - it just works. Maybe the KX3's protection > mechanisms are a bit too "sharp"? > > Another observation are audible artifacts while tuning over the band when > using narrow filters (FL2, 3). They are a bit distracting. You think there is > a station, but there is none. You have to tune further to find the real > signal. Note this happens only on very strong stations in combination with > filters narrower than ~700 Hz. > > My bottom line: KX3 is great even for big contests. The K2 is still the more > reliable transmitter at the moment. > But I'm happy that I bought one and hope it evolves further. > > Thanks Elecraft and 73 > > Gernot, DF5RF > > ______________________________________________________________ > 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
