A spare Linux machine with a 192 KHz sound card could generate the signal directly, then use a modified audio amp to boost the signal. You could write the software to emulate a choice of stations.
Chuck, There's software under leapsecond.com/tools that you'll find helpful in this effort (wwvb* tco*). Have a look at: http://www.leapsecond.com/notes/wwvb2.htm I also have a version that uses a standard 44.1 kHz sound card to generate audio at 60kHz/N (for example 60000/11 = 5454 Hz) and then plays the sound through headphones next to a WWVB clock. The Nth harmonic of the magnetic coupling between the headphones and the clock does the trick. It works (but I found the high pitched sound obnoxious). /tvb _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
