A DCF77 option sets the clock(s) from the Atomic Time Transmitter in Frankfurt Germany.
The reciever is a small ready built module (35 x 19 mm) and available from Conrad.
I mounted the DCF77 module (with hot glue) in a small box, also from Conrad.
Conrad part numbers:
522244-20 Module Box (54 x 37 x 21 mm)
641138-62 DCF 77 Receiver Module
Screened two core cable is used to connect the module to the clock PCB.
|Nice and clean|
The next photo is interesting!
It shows the 1N14 clock, the CD81 clock, a radio alarm clock, and a Squeezebox together, and all synchronised.
The Sqeezebox is displaying time from an internet NTP server, the other 3 clocks are displaying DCF77 decoded time.
|Four clocks, and all in perfect sync!|