noun
standard time and frequency signal
Technical term used in broadcasting and timekeeping; refers to radio signals that transmit precise time and frequency information, such as those from JJY in Japan.
電波時計は標準電波を受信して時刻を合わせる。
Radio-controlled clocks receive standard time signals to set the time.
Compound of 標準 (standard) and 電波 (radio wave).