Radio wave environment measurement (supplement)

Safety of Radio Waves
A panoramic view of the TOKYO SKYTREE towering over the cityscape along the river, against a blue sky.

Measurement method

In measuring the radio wave environment, we measured and published the strength of the radio waves transmitted from TOKYO SKYTREE based on the guidelines issued by the Ministry of Internal Affairs and Communications (*1).
In selecting the measurement locations, we chose places where the TOKYO SKYTREE is visible to avoid interference from objects that block radio waves.

  • 1 The measurement method complies with the method described in the "Guide to Confirmation of Compliance with Radio Wave Protection Standards."

Reference: Ministry of Internal Affairs and Communications website
Guidance for verifying compliance with radio wave protection standards (125KB)

The image shows a person in work clothes taking measurements, with the TOKYO SKYTREE visible in the distance from an outdoor space.

About the radio waves to be measured

We are conducting measurements on the following radio waves transmitted from TOKYO SKYTREE.

  • Broadcasting
    • Multimedia broadcasting: Japan Mobile Casting (Broadcast ended June 2016)
    • FM Radio: J-WAVE, NHK-FM
    • Television: NHK, Nippon Television, TV Asahi, TBS Television, TV Tokyo, Fuji Television, TOKYO MX
    • FM complementary broadcasting: TBS Radio, Nippon Cultural Broadcasting, Nippon Broadcasting
  • Commercial radio signals and Taxi radios: Kanto Automobile Radio Association, etc.

A person in work clothes is seen cleaning and inspecting the exterior wall.

Details of the measurement results

The strength of each radio wave (※2) measured at each measurement location is published.

  • 2 Listed are those that have started regular broadcasting and regular operation at the time of measurement.

Latest measurement results

Past measurement results

An example of an antenna installed on TOKYO SKYTREE.

A photo taken looking up at the top antenna area of ​​TOKYO SKYTREE against a blue sky.
Broadcasting transmitting antenna (Antenna gain tower)
A view of the TOKYO SKYTREE observation deck and its grid-like Tower structure from below.
Rod-shaped antenna (below the Tembo Deck)
A close-up view of the TOKYO SKYTREE's exterior, showing the upper part of the observation deck and the antenna section.
Parabolic antenna, FPU (*3) (between the Tembo Deck and the Tembo Galleria)
  • 3. Radio waves from parabolic antennas have high directivity and hardly leak into the surroundings, so they are not included in the measurements. FPUs are for receiving and do not transmit radio waves, so they are not included in the measurements.