WWV is a radio station run by the National Institute of Standards and Technology (NIST) that broadcasts precise time and frequency from Fort Collins, CO. A companion station, WWVH, provides a similar service from Kekaha, HI. The time sources are highly accurate atomic clocks.

2015年5月28日 · Voice announcements are made from WWV once every minute. The WWVH announcement occurs first, at about 15 s before the minute. The WWV announcement follows at about 7.5 s before the minute. The announced time is "Coordinated Universal Time" (UTC).

2010年3月5日 · WWV has a long and storied history that dates back to the very beginning of radio broadcasting. The call letters WWV were assigned to NIST (then called the National Bureau of Standards) in October 1919.

[September 2019] WWV, the Nation’s Timer-keeper, celebrates its 100th Anniversary of receiving its call letters on October 1st 2019. It is still out there. All you need is a radio capable of receiving 2.5, 5, 10, 15, and 20 MHz. One of these frequencies is available virtually anytime, anywhere in …

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2015年8月5日 · Time and frequency standard station WWV ’s resurrected 25 MHz signal — now back on the air for more than a year after going silent in 1977 — is once again transmitting on a vertical dipole from its original antenna and location. The 25 MHz signal came back on the air on an “experimental basis” in April 2014, and it’s been transmitting ever since.

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2021年9月21日 · The WWV 100th Anniversary in October 2019 was the result of a successful collaboration between amateur radio operators from across the country and the staff at NIST radio station WWV in Fort Collins, CO, and the NIST labs in Boulder, CO and Gaithersburg, MD.