Yes - back in the early days of the K3 it did the opposite, it would transmit more power than requested which was a nightmare for those of us using linear amplifiers. Some new ALC software was developed which had this effect, but it was not as marked as you are experiencing. There might be a biasing problem which could cause this sort of slow build effect, but from what you say happens when you adjust the power control it looks like it is directly related to the power setting algorithm. The first thing to do is repeat the calibration. That may well fix it.
If not, JT65 might be confusing the ALC algorithm, it may expect a waveform with some modulation to operate but JT65 has a constant amplitude. If you key CW does it do the same? I.e. initial Key down, sits at low power, sending dots goes to high power? What is it like on SSB? Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-TX-Power-tp7577770p7577777.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