I wonder if this is what you heard on 5 MHz? I have never heard the time ticks from WWV sound like this. And the "sweeping kind of signal" about half way through. It almost sounds like something is going into oscillation. Wonder if they're having problems? Maybe they need a signal report HI! http://home.comcast.net/~wa3usg/wwv_5mhz.wav 73 Dick, WA3USG