I have a digital clock that I received from my mom just before she passed. It uses WWV for time/date sync. It has never drifted off time. If they shut down those stations, I will have to create my own NTP to shortwave low powered SDR unlicensed transmitter.<p>Does anyone already happen to have any code that will use system time to generate the audio signals and time code that would replicate WWV?<p>Edit: I think I found two [1] [2]<p>[1] - <a href="https://github.com/ka9q/WWV" rel="nofollow">https://github.com/ka9q/WWV</a><p>[2] - <a href="https://github.com/micooke/wwvb_jjy" rel="nofollow">https://github.com/micooke/wwvb_jjy</a>