CANADUINO® 60kHz WWVB Atomic Clock Receiver - Compatible with MSF and JJY60: Amazon.com: Industrial & Scientific
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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
Atomic Clock - SPX-14830 - SparkFun Electronics
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Miniature Atomic Clock (MAC - SA.3Xm) | Microsemi
Atomic Clock - SPX-14830 - SparkFun Electronics
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Miniature Atomic Clock (MAC - SA5X) is only 2 x 2" - Electronics-Lab.com
E10-LN Low Noise Rubidium Oscillator Module
Chip-Level-Integrated Frequency Standards | National Institute of Information and Communications Technology
60kHz WWVB Atomic Clock Receiver - Compatible With MSF And JJY60
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
Miniaturized rubidium atomic clock maintains high degree of synchronization to reference clock
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