WWV (radio station)
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WWV is a shortwave radio station, located near Fort Collins, Colorado. It has broadcast a continuous time signal since 1945, and implements United States government frequency standards, with transmitt
WWV Transmitter Building (2002 or earlier)
Alongside weekly broadcasts over WWV, in May 1920 the Bureau of Standards presented the "portaphone", with which one could "receive wireless impulses in the form of signals, music or speech, reproducing the same through a loud-speaking telephone and horn".
WWV seconds pulse generator, 1943
A 1940 QSL card for WWV
The National Institute of Standards and Technology is an agency of the United States Department of Commerce whose mission is to promote American innovation and industrial competitiveness. NIST's activ
A chart of Bureau of Standards activities, 1915
A mass spectrometer in use at the NBS in 1948
The Bureau of Standards headquarters in Gaithersburg, Maryland being constructed in 1964.
Advanced Measurement Laboratory Complex in Gaithersburg