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 1.8 kHz, 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 1.5 kHz 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
External links HLA This link is no longer valid. KRISS time and frequency dissemination This link is no longer valid.