Rubiidiumi aatomkell on kõige odavam, kompaktsem ja laialdaselt toodetud aatomkell, mida kasutatakse telejaamade, mobiiltelefonide tugijaamade, katseseadmete sageduse juhtimiseks ja globaalsetes navigatsioonisatelliitide süsteemides, nagu GPS.
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Kaubanduslikud rubiidiumkellad on vähem täpsed kui tseesiumi aatomkellad, mis toimivad esmaste sagedusstandarditena, seega kasutatakse rubiidiumkella tavaliselt sekundaarse sagedusetalonina.
The rubidium atomic clock 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.
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Commercial rubidium clocks are less accurate than caesium atomic clocks, which serve as primary frequency standards, so a rubidium clock is usually used as a secondary frequency standard.
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