The Telecommunications Bureau of the Ministry of Internal Affairs and Communications (MIC) of Japan published the revision of The “Frequency Assignment Plan” as of March 2019.

The “Frequency Assignment Plan” is a table showing assignable frequencies in Japan. The Plan is established and disclosed by the MIC under the Radio Law.

The frequencies for each radio station are assigned considering the following matters:

Class of emission, necessary frequency bandwidth, antenna power, location of the transmitting and receiving stations, characteristics of radio equipment, electric field strength and protection ratio of interference to be ensured, necessary intervals for separating adjacent frequencies, radio wave propagation characteristics, and other technical matters  

Constitution and Convention of the International Telecommunication Union and the prescriptions of the RR based on them as well as the results of international coordination conducted under the RR  

In addition to the agreements mentioned in the term (2), other bilateral or multilateral arrangement on the usage of frequencies and the results of coordination conducted under them (e.g. the agreement relating to the International Telecommunication Satellite Organization (INTELSAT))  

Frequencies listed in Chapter 4 of this Plan  

Other necessary matters for securing the equitable and efficient utilization of radio spectrum

As an exception, frequencies may be assigned without conforming to the Frequency Allocation Table to radio stations for experimental or temporary operations or for other purposes in case when it is necessary from the viewpoint of securing the equitable and efficient use of radio spectrum.

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