Stephen, I also use my K2-100 on psk. I find that it is best to throttle down your power to 30 watts with the power control, then adjust you audio drive for just 30 watts out. I also turned audio compression off. I have received very good reports on IMD operating in this manner.
I know your not interested in interfaces but be advised the audio in and out of the K2 are not isolated. If you are using a laptop computer then there should be no problem but on my desk top system I had to isolate the input and output audio to prevent ground loops. Hope this helps. 73 and Happy Holidays. Dave KD1NA _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com