Thanks for all that have responded.
I've installed a 100 K series resistor in the audio input as suggested. The problem continues, however. In messing around with the unit, I attached an EZhook cliplead to the audio input at the board-connector. The cliplead is attached to a wire about 1 ft long with another EZhook at the end. Nothing is attached to the other end, however. When this is done, the indicator works correctly, with no-signal responses to very few noise bursts and correct operation on signals, at full RF gain. The cliplead seems to be injecting noise into the audio line. If the other end is connected to a 1 M resistor to ground, the needless blinking resumes. This suggests that the K6XX board may be defective. Further ideas would be appreciated. Chris Kimball WB4WZR ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html

