Nicholas Humfrey on Twitter: "I got an MSF (Time by NPL) Atomic Clock receiver kit for Christmas! 'OUT' LED is correctly flashing when placed next to the window. https://t.co/lMdIzUbUWU" / Twitter
![CANADUINO Extended Radio Controlled Clock Receiver Kit for 77.5 kHz - Compatible with DCF77 Germany - Europe : Amazon.de: Everything Else CANADUINO Extended Radio Controlled Clock Receiver Kit for 77.5 kHz - Compatible with DCF77 Germany - Europe : Amazon.de: Everything Else](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/61kz6NIc9kL._SX425_.jpg)
CANADUINO Extended Radio Controlled Clock Receiver Kit for 77.5 kHz - Compatible with DCF77 Germany - Europe : Amazon.de: Everything Else
![Wie MSF Atomuhr Receiver-Module arbeiten - kostenlos für Schulen, Universität und Studenten | Galleon Systems Ltd Wie MSF Atomuhr Receiver-Module arbeiten - kostenlos für Schulen, Universität und Studenten | Galleon Systems Ltd](https://de.galsys.co.uk/images/complete-module.jpg)
Wie MSF Atomuhr Receiver-Module arbeiten - kostenlos für Schulen, Universität und Studenten | Galleon Systems Ltd
![ALANO DCF77 77kHz NIST Radio Clock Module 30dB High Gain Atomic Clock Receiver Module 100mm Antenna 1.2 to 5V Operating Voltage for Radio/Alarm Clock/Timer: Amazon.de: Electronics & Photo ALANO DCF77 77kHz NIST Radio Clock Module 30dB High Gain Atomic Clock Receiver Module 100mm Antenna 1.2 to 5V Operating Voltage for Radio/Alarm Clock/Timer: Amazon.de: Electronics & Photo](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/61nn8QneWTL._AC_SL1200_.jpg)