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WWV Transmitter Building (2002 or earlier) WWV's 15 MHz antenna WWV is a shortwave ("high frequency" or HF) radio station, located near Fort Collins, Colorado.It has broadcast a continuous time signal since 1945, and implements United States government frequency standards, with transmitters operating on 2.5, 5, 10, 15, 20, and 25 MHz. [1]
In 1962, the National Bureau of Standards (NBS) — now known as National Institute of Standards and Technology (NIST) — began building a new facility at a site near Fort Collins, Colorado. This site became the home of WWVB and WWVL, a 20 kHz station that was moved from the mountains west of Boulder.
The Journal of Research of the National Institute of Standards and Technology was the flagship scientific journal at NIST. It was published from 1904 to 2022. First published in 1972, the Journal of Physical and Chemical Reference Data, is a joint venture of the American Institute of Physics and the National Institute of Standards and Technology.
Standard frequency and time signal-satellite service (short: SFTSS) is, according to Article 1.54 of the International Telecommunication Union's (ITU) Radio Regulations (RR), [2] defined as A radiocommunication service using space stations on earth satellites for the same purposes as those of the standard frequency and time signal service.
Bureau of Standards' WWV, Washington, D.C., started in February 1919, and in May 1920 demonstrated its "Portaphone" receiver [61] In October 1919 Frank Conrad began semi-regular broadcasts from his experimental station 8XK, located at his home in Wilkinsburg, Pennsylvania.
Upon retiring in 1980 he devoted time to the National Cancer Society. He was inducted into the Georgia Broadcasters Hall of Fame in 1997. Heald was the voice of the National Bureau of Standards atomic clock broadcast on shortwave station WWV from May 1955 until August 13, 1991.
The National Conference on Weights and Measures (NCWM) emerged from this effort to bring stakeholders together. With the exception of 11 years, annual meetings have been held every year since. From 1905 to 1957, the Director of the National Bureau of Standards served as the Chairman of NCWM. Starting in 1958, NCWM members began electing a state ...
The comparator units used an oscilloscope to monitor the National Bureau of Standards radio station WWV to ensure the time was accurate. WWV used an Audichron machine to broadcast the time over the radio.