Otakadoyayama Transmitter

Otakadoyayama Transmitter (おおたかどや山標準電波送信所, ) is an LF-time signal transmitter at Tamura-City, Fukushima-ken, Japan used for transmitting the time signal JJY on 40 kHz. The Otakadoyama site is one of two JJY transmitters, another is the Haganeyama site.

== Summy ==
 * NAME：NICT Otakadoyayama LF station
 * Location：Summit of Mt. Otakadoya, Tamura-City, Fukushima-ken
 * Elevation：about 790m
 * Latitude：37°22'21.0"N
 * Longitude：140°50'56.0"E
 * License：NICT
 * Station purpose：Transmitting the official Japanese government frequency standards and time signal
 * Frequency form：250H A1B
 * Frequency：40kHz
 * Antenna power：50kW（Antenna efficiency: about 45%）
 * Antenna form：Umbrella type 250m high
 * Operation time：continuously
 * Operation start：1999/06/01
 * Range：About 1,000 km
 * Transmission method :