Hi All, Have a TS-830S; works VFB. Just turned on the calibrator for the first time and noticed something strange. Usually the cal signal is heard at 25 kc points as it should be. Occasionally, the signal seems to occur at approx 11.5-12.0 kc intervals; doesn't seem to be 12.5 kc. Turning calibrator off and then on with knob seems to cure. Any thoughts? 73 es TIA, -- Steve KL7JT/1