At 100 watts according to the K3, with 12.6 vdc (drops down from 13.8 vdc with key down CW) I get 19.5 adc according to the Hamsource EZ-meter. ----- Chuck, KE9UW -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-A-calibration-question-tp7567680p7567704.html Sent from the Elecraft mailing list archive at Nabble.com.