4 ms·
DCF77
- ggm 4y agoI finally got to command sync my citizen sky master. I live in Australia,outside reception distance for JJY. In the UK weeks before I only randomly achieved the 4am sync, never on demand. When I visited philly, WWV didn't work. In Frankfurt airport, just 20km or less from the DCF77 transmitter, flying home to Oz my watch synced up first time I selected the manual sync option. I use a raspberry pi with a copper loop antenna as as local RF source with NTP and a freeware DCF/JJY/WWV emulator which superimposes the time signal on some GPIO pins. Works fine.