Miniature Atomic Clock (MAC - SA5X) is only 2 x 2" - Electronics-Lab.com
SkyScan Atomic Clock Wireless Indoor Temperature Module | eBay
E10-LN Low Noise Rubidium Oscillator Module
60kHz WWVB Atomic Clock Receiver - Compatible With MSF And JJY60
Build a DIY Clock that Uses Ultra-Precise Atomic Timekeeping
A New Architecture for Miniaturization of Atomic Clocks Exploiting a Piezoelectric-Thin-Film Vibration From a rack-mount system toward a microchip | Tokyo Tech News | Tokyo Institute of Technology
CANADUINO DCF77 Atomic Clock Receiver Module 77.5kHz for Europe : Amazon.co.uk: Fashion
ALANO DCF77 77kHz NIST Radio Controlled Clock Modules, 30dB High Gain Atomic Clock Receiver Module, 100mm Antenna 1.2 to 5V Operating Voltage for Radio/Radio Alarm Clock/Timer: Amazon.co.uk: Electronics & Photo
Miniaturized rubidium atomic clock maintains high degree of synchronization to reference clock
How MSF Atomic clock receiver modules work - free for colleges, University and students | Galleon Systems Ltd
WWVB 60kHz NIST Radio Controlled Clock Modules, 30dB High Gain Atomic Clock Receiver Module, 100mm Antenna 1.2 to 5V Operating Voltage for Radio/Radio Alarm Clock/Timer (5 PCS) | Walmart Canada
CANADUINO® 60kHz WWVB Atomic Clock Receiver - Compatible with MSF and JJY60: Amazon.com: Industrial & Scientific
The PC-board atomic clock, Part 1: Primary and secondary standards
Chip-scale atomic clock approaches performance of modules - EE Times