WWV

WWV operates multiple transmitters broadcasting continuous time signals and announcements on frequencies of 2.5, 5, 10, 15, 20, and 25 MHz from Colorado.

The National Bureau of Standards established WWV in Washington DC in 1919, relocated it to Maryland in 1931, and finally moved it to Fort Collins in 1966.

The station maintains the longest-running radio call letters in the United States, providing essential time synchronization services for numerous sectors of society.

Users can access precise time information through radio broadcasts or by calling the telephone service at +1 (303) 499-7111 for up to two minutes.

The station broadcasts maintain time accuracy within 100 nanoseconds of Coordinated Universal Time through coordination with the National Institute of Standards and Technology.

Location: Fort Collins

Phone: +13034997111

GPS coordinates: 40.67972,-105.04250

Latest update: May 28, 2025 18:21