Links

EverSet ES100 receiver kits are available exclusively from UNIVERSAL-SOLDER®

https://www.universal-solder.ca/everset-es100

NIST WWVB website:

www.nist.gov/pml/div688/grp40/wwvb.cfm

Enhanced WWVB Broadcast Format:

http://www.nist.gov/pml/div688/grp40/upload/NIST-Enhanced-WWVB-Broadcast-Format-1_01-2013-11-06.pdf

HKW Test equipment provides a signal generator supporting the enhanced protocol:

www.hkw-elektronik.de/englisch/index.php

Time and date information:

www.timeanddate.com/

“Arduino based implementation from Keith Greiner”

Read about it here