I'll turn this into a proper web page tomorrow, but I've uploaded .wav and .mp3 files of WWVB, CHU, WWV-5MHz, and WWV-10MHz as well as data logs of the Spectracom 8170, Z3801A, and Linux system time (from the program posted on the NTP list earlier today). All are cut down to show about one minute either side of 0000Z, except the Spectracom which covers out to 0005 to catch its update at 00:03:59.
http://www.febo.com/time-freq/leapsecond-2005/ You might have fun with the audio files as they are all quite precisely aligned with each other in time (within the limits of the 8000Hz sample rate). The four receivers fed a single four-channel sound card and audio recorder program. There are a couple of screenshots of the recording software (Audacity under Linux) in action. You'll note a few hundred milliseconds delay between the two WWV signals. Apart from any propagation differences between 5 and 10MHz, the 10MHz signal came from my SDR-1000 software defined radio which has quite a bit of latency due to the audio processing in the PC (a different machine than the one used for recording). The 5MHz signal came from a Yaesu FT-817, a traditional radio. The WWVB and CHU signals came from a pair of HP 3586C selective level meters. John _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts