Box for DCF77 Receiver

Box to attach a simple DCF77 clock receiver (European atomic clock).
This kind of receiver can be bought on eBay for a few EUR.

The idea is to attach the 4 wires directly to an Arduino chip, and there is a pretty cool library to read out the signal:
https://blog.blinkenlight.net/2015/08/01/dcf77-library-release-3-0-0/