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HLA is a time signal radio station in Daejeon, South Korea, operated by the Korea Research Institute of Standards and Science. Established on November 24, 1984, it transmits a 2 kW signal on 5 MHz (±0.01 Hz〔). Originally only transmitted for 7 hours per day (01:00–08:00), 5 days per week (M–F),〔 Supplement to Recommendation ITU-R TF.768 “Standard frequencies and time signals”.〕 it is continuous as of 2011, There are over 100 users of the signal in Korea.〔(List of HLA users ) 〕 It broadcasts a time signal similar to that of the WWV and WWVH stations with which it shares a frequency:〔 * Second pulses are 5 ms (9 cycles) of 1800 Hz, beginning on the second * Seconds 29 and 59 are omitted * Minute markers are 800 ms of the same frequency * Hour markers are 800 ms of 1500 Hz * DUT1 is encoded using doubled pulses * Voice time announcements are made after second 52 * A time code is transmitted on a 100 Hz subcarrier ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「HLA (radio station)」の詳細全文を読む スポンサード リンク
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