WWVB Clock

I built this clock to receive the WWVB time signal broadcast from the NIST radio station in near Fort Collins, CO. It has worked reasonably well for me in both Philadelphia and Los Angeles, syncing at least once per day, typically very early in the morning.

Appeared in PopSci April 2010
Supporting files are on GitHub

Project: Vin Marshall
Photo: John B. Carnett / Popular Science