NIST Radio Station WWVH

 radio - do not use, antenna, transmission tower (electric / electricity)

Standard time and frequency signals on 2.5, 5, 10 and 15 MHz.

WWVH is the Pacific sister station to WWV, and has a similar broadcast format to WWV. WWVH Broadcasts National Institute of Standards and Technology (NIST) time and frequency signals from a site near Kekaha at Kokole Point on the Island of Kauai, Hawaii. WWVH uses the voice of the late Jane Barbe (of AT&T/Bell System fame).

For both stations the transmission mode is DSB AM. Steady tone modulation is 50%. BCD time code modulation is 50%. Second pulses and minute and hour marker modulation 100%. Voice modulation is 50%. The antenna polarization is vertical.

WWV and WWVH share 2500 kHz with BPM, Shaanxi Astronomical Observatory, Chinese Academy of Sciences, P.O. Box 18 - Lintong, Shaanxi, China.

www.smeter.net/stations/hf-time-frequency.php