standard-frequency signal

standard-frequency signal

[′stan·dərd ¦frē·kwən·sē ‚sig·nəl]
(communications)
One of the highly accurate signals broadcast by government radio stations and used for testing and calibrating radio equipment all over the world; in the United States signals are broadcast by the National Bureau of Standards' radio stations WWV, WWVH, WWVB, and WWVL.
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