Alpha
Mar 31, 2008, 8:49 PM
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Official sources:
Unofficial sources: http://www.miwachiri.com/tokyo/0308_kawatwr.html
Building Name: NHK Kawaguchi Transmitter
Native Name:
Other Names:
Address:
City: Kawaguchi
Postal Code:
State/Province: Saitama
Country: Japan
Official Building Website URL:
Skyscrapers.com (Emporis.info) URL:
Architect:
Interesting Facts/Records (in own words): The masts of this transmitter were until the construction of
Tokyo Tower in 1958 the tallest architectural structures in Japan.
The antenna system of NHK Kawaguchi Transmitter consisted of 2 312.78 metres tall guyed lattice steel mast in a
distance of 463 metres. Between these masts a wire was spun. On the half distance of both masts, the 264 metres
long antenna wire run down to the dome-like helix building, where the radio power to be transmitted was fed in.
The antenna of NHK Kawaguchi Transmitter was a T-antenna with less skywave radiation. The same antenna could
be also realized with a single mast radiator insulated against ground with a height of approximately 260 metres.
However such an antenna was not realized for this transmitter, as the technology of building large mast radiators
was not very well developed in Japan at those days. The height of the masts was so chosen, that they influence the
field radiated by the antenna ( in fact, there height is with nearly 5/8 of wavelength showing less influence of
radiation pattern).
In 1982 the transmitter was shut-down after a new facility was built and 2 year later the masts were dismantled by
using a crane. The basement of the masts and of the guys are still there,
Heights--
PLEASE PROVIDE SOURCES FOR HEIGHTS, OTHERWISE WE WILL ASSUME THEY ARE ESTIMATES.
- antenna: 312.78 metres
- spire:
- roof:
- top floor:
- other heights:
Current Building Status (Built, Proposed, Canceled, Destroyed, etc...): Destroyed
Construction Dates--
- started: 1937
- finished: 1937
- destroyed: 1984
Above ground floors:
Below ground floors:
Floor-to-floor height:
Gross Floor area:
Elevator count:
Unit count: 2 ( please only 1 entry)
Structure Type(s): Guyed mast
Building Use(s): Communication
Building Style(s):
Building Materials: Steel
------------------------
------------------------
City Name: Kawaguchi
Native Name:
State/Province:
Country: Japan
Population: 488140
Population Source & Year: http://en.wikipedia.org/wiki/Kawaguchi%2C_Saitama (2007)
------------------------
Official sources:
Unofficial sources: http://www.miwachiri.com/tokyo/0308_kawatwr.html
Building Name: NHK Kawaguchi Transmitter
Native Name:
Other Names:
Address:
City: Kawaguchi
Postal Code:
State/Province: Saitama
Country: Japan
Official Building Website URL:
Skyscrapers.com (Emporis.info) URL:
Architect:
Interesting Facts/Records (in own words): The masts of this transmitter were until the construction of
Tokyo Tower in 1958 the tallest architectural structures in Japan.
The antenna system of NHK Kawaguchi Transmitter consisted of 2 312.78 metres tall guyed lattice steel mast in a
distance of 463 metres. Between these masts a wire was spun. On the half distance of both masts, the 264 metres
long antenna wire run down to the dome-like helix building, where the radio power to be transmitted was fed in.
The antenna of NHK Kawaguchi Transmitter was a T-antenna with less skywave radiation. The same antenna could
be also realized with a single mast radiator insulated against ground with a height of approximately 260 metres.
However such an antenna was not realized for this transmitter, as the technology of building large mast radiators
was not very well developed in Japan at those days. The height of the masts was so chosen, that they influence the
field radiated by the antenna ( in fact, there height is with nearly 5/8 of wavelength showing less influence of
radiation pattern).
In 1982 the transmitter was shut-down after a new facility was built and 2 year later the masts were dismantled by
using a crane. The basement of the masts and of the guys are still there,
Heights--
PLEASE PROVIDE SOURCES FOR HEIGHTS, OTHERWISE WE WILL ASSUME THEY ARE ESTIMATES.
- antenna: 312.78 metres
- spire:
- roof:
- top floor:
- other heights:
Current Building Status (Built, Proposed, Canceled, Destroyed, etc...): Destroyed
Construction Dates--
- started: 1937
- finished: 1937
- destroyed: 1984
Above ground floors:
Below ground floors:
Floor-to-floor height:
Gross Floor area:
Elevator count:
Unit count: 2 ( please only 1 entry)
Structure Type(s): Guyed mast
Building Use(s): Communication
Building Style(s):
Building Materials: Steel
------------------------
------------------------
City Name: Kawaguchi
Native Name:
State/Province:
Country: Japan
Population: 488140
Population Source & Year: http://en.wikipedia.org/wiki/Kawaguchi%2C_Saitama (2007)
------------------------