Thanks Lyle and David. Sounds all's configured OK then. I'll get back to playing with my K3. 73, John VK7JB -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-s-meter-calibration-parameters-and-flickering-S1-tp6418969p6420986.html Sent from the Elecraft mailing list archive at Nabble.com.