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• In the United States, standard time and frequency signals, broadcast on very precise carrier frequencies by the U.S. Naval Observatory and the National Institute of Standards and Technology (NIST), formerly the National Bureau of Standards (NBS). Note: The Radio Regulations (RR) define an identical international service as standard frequency and time signal service.

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  Cite Definition for standard time and frequency signal (STFS) service

  American Psychological Association (APA)

  standard time and frequency signal (STFS) service. (n.d.). ATIS Telecom Glossary 2007. Retrieved January 28, 2023, from website: http://www.expertglossary.com/definition/standard-time-and-frequency-signal-stfs-service.

  Chicago Manual of Style (CMS)

  standard time and frequency signal (STFS) service. www.atis.org. ATIS Telecom Glossary 2007. ATIS. http://www.expertglossary.com/definition/standard-time-and-frequency-signal-stfs-service (accessed: January 28, 2023).

  Modern Language Association (MLA)

  "standard time and frequency signal (STFS) service." ATIS Telecom Glossary 2007. ATIS. 28 January. 2023 http://www.expertglossary.com/definition/standard-time-and-frequency-signal-stfs-service.

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