Yosami Transmitting Station was a very large

transmitting station In electronics and telecommunications, a radio transmitter or just transmitter is an electronic device which produces radio waves with an antenna. The transmitter itself generates a radio frequency alternating current, which is applied to the ...

for intercontinental communication and for

submarine A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term is also sometimes used historically or colloquially to refer to remotely op ...

communication Communication (from la, communicare, meaning "to share" or "to be in relation with") is usually defined as the transmission of information. The term may also refer to the message communicated through such transmissions or the field of inqui ...

in the VLF-range at

Kariya, Aichi is a city in central Aichi Prefecture, Japan. , the city had an estimated population of 153,162 in 66,751 households, and a population density of 3,040 persons per km2. The total area of the city is . Geography Kariya is situated in central Aic ...

, Japan. Yosami Transmitting Station used as

antenna Antenna ( antennas or antennae) may refer to: Science and engineering * Antenna (radio), also known as an aerial, a transducer designed to transmit or receive electromagnetic (e.g., TV or radio) waves * Antennae Galaxies, the name of two collid ...

a wire antenna system, which was spun between 8 guyed masts, each 250 metres tall and insulated against

ground Ground may refer to: Geology * Land, the surface of the Earth not covered by water * Soil, a mixture of clay, sand and organic matter present on the surface of the Earth Electricity * Ground (electricity), the reference point in an electrical c ...

. The masts of Yosami transmitting station were at its completion in 1929 Japan's tallest architectural structure. Yosami Transmitting Station played an important role in

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...

for transmitting news to Germany and Italy and for transmitting messages to submarines under water. After 1950 the transmitters were used by the

US Navy The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...

. Although the masts were repainted in 1985, the station shut down in 1993 and became a beautiful flower park. However, the transmitter and building as well as the bottom section of one of the masts were moved and rebuilt as a museum a short way from the original site. Yosami museum

External links

Denki Kogyo Ltd: History of the Yosami Transmitting Station

Transmitter and Antenna system schematics

Antenna scheme

{{Authority control Towers in Japan Infrastructure completed in 1929 1929 establishments in Japan 1996 disestablishments in Japan Military facilities in Aichi Prefecture Demolished buildings and structures in Japan