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Rubidium standard

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What is RUBIDIUM STANDARD? What does RUBIDIUM STANDARD mean? RUBIDIUM STANDARD meaning

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FE-5680A Rubidium Frequency Standard

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Next-Generation Miniaturised Rubidium Atomic Clock

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Comparing a Rubidium Frequency Standard to a GPS Disciplined Oscillator.

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Rubidium Frequency Standard Problems

A rubidium standard or rubidium atomic clock is a frequency standard in which a specified hyperfine transition of electrons in rubidium-87 atoms is used to control the output frequency. It is the most inexpensive, compact, and widely produced atomic clock, used to control the frequency of television stations, cell phone base stations, in test equipment, and global navigation satellite systems like GPS. Commercial rubidium clocks are less accurate than caesium atomic clocks, which serve as primary frequency standards, so the rubidium clock is a secondary frequency standard. However, rubidium fountains are currently being developed that are even more stable than caesium fountain clocks.
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