On July 24, 2026, Japan's Ministry of Internal Affairs and Communications (MIC) issued amendments to the Radio Equipment Regulations, which took effect on the same day. This revision reintegrates regulations for specific low-power radio stations within the 433 MHz band and establishes tire pressure monitoring systems (TPMS) and keyless entry systems (RKE) as separate categories of radio equipment.

Among them, the 433 MHz related equipment band specified in Article 49-14, Item 5 has been expanded from 433.67–434.17 MHz to 433.05–434.79 MHz; The frequency band range for TPMS and RKE has been adjusted from 433.795–434.045 MHz to 433.05–434.79 MHz, and the regulations have also removed the original structural condition that "the chassis cannot be easily opened." For certified old products, the original certification remains valid without changing the original operating frequency or technical parameters, without needing to re-certify.

Click this link to view the original text of MIC Amendment No. 91.

On June 23, 2026, Japan's Ministry of Internal Affairs and Communications issued regulatory amendments allowing the use of 920 MHz beam wireless power transmission systems (WPT) in outdoor environments, provided relevant technical and operational requirements are met. The regulatory amendments took effect on the date of issuance.

Click this link to view the original text of the regulatory revision announcement.

Following the public consultation on introducing 26GHz for 5G networks on October 11, 2025, Japan's Ministry of Internal Affairs and Communications (MIC) issued Ordinance No. 26 on March 23, 2026, completing revisions to the Radio Act and technical standards for specific radio equipment. The main revisions are as follows:

• Band expansion: Includes the 26GHz band and introduces new certification rules for the 22GHz, 26GHz, and 38GHz bands;
• Technical requirements: New carrier aggregation-related requirements, and updated antenna output power and radiated stray power limits;
• Transitional clause: Products that have completed certification under the old regulations and operate in the 27.0–29.5GHz band are exempt from recertification, with the exemption valid until May 31, 2031.

Click this link to view the original text of Ministry of Internal Affairs and Communications Decree No. 26.

On January 24, 2026, Japan's Ministry of Internal Affairs and Communications (MIC) launched the following public consultation:

• The proposed ministerial order aims to amend the Regulations under the Radio Act (establishing a regime for outdoor use of wireless power transmission systems in the 920 MHz band). Click this link to view the original public consultation, the deadline for comments is February 24, 2026.
• Proposed Ministerial Decree to amend the Regulations of the Radio Act (Establishment of an 800MHz Broadband Low-Power Radio System and an 800MHz 3D Positioning System System). Click this link to view the original public consultation, and the deadline for comments is February 24, 2026.

On October 11, 2025, Japan's Ministry of Internal Affairs and Communications (MIC) consulted on a draft ministerial ordinance to amend the Detailed Regulations for the Implementation of the Radio Act to introduce the construction of 5G networks in the 26GHz frequency band.

Click this link to view the original public consultation, which is open for comments until November 10, 2025.

On August 23, 2025, Japan's Ministry of Internal Affairs and Communications (MIC) launched the following three public consultations:

• Public Consultation No. 2009: "Technical requirements for 800 MHz broadband low-power radio systems" in "Technical requirements for the development of low-power radio systems"; Public Consultation No. 2033: "Technical Requirements for 3D Positioning Systems" in "Technical Requirements for the Development of Commercial Land Radio Communications". Click this link to view the original text of the above two public consultations, which are open for comment until September 22, 2025.
• Public Consultation No. 2043: "Technical Conditions for Space Transmission Wireless Power Transmission Systems" - "Technical Conditions for Outdoor Use of Spatial Transmission Wireless Power Transmission Systems in the 920 MHz Frequency Band". Click this link to view the original public consultation, which is open for comment until September 23, 2025.

On February 27, 2025, the Ministry of Internal Affairs and Communications (MIC) issued Decree No. 5 of the Ministry of Internal Affairs and Communications to revise the Radio Law. This revision uses the 433 MHz band for TPMS and remote keyless entry services.

Click on this link to view the original MIC regulatory amendments.

On April 3, 2025, Japan's Ministry of Internal Affairs and Communications (MIC) solicited public comments on the draft report of the Committee on Next-Generation Mobile Communications Systems on the technical requirements for 5G mobile communication systems (26 GHz band/40 GHz band).

Click on the link to view the original public consultation, and the comment period is until May 7 2025.

On December 18, 2024, Japan's Ministry of Internal Affairs and Communications (MIC) announced on the WTO TBT platform that it intends to amend the Radio Equipment Ordinance (i.e., the Radio Law) to promote the widespread use of WLAN systems in the 5.2GHz band, especially for aerial applications.

Click this link to view the original MIC announcement on the WTO TBT platform.

On 26 October 2024, the Ministry of Internal Affairs and Communications (MIC) of Japan launched the following public consultation:

• Report of the Committee on the Next Generation of Mobile Communications Systems (draft) - "Technical specifications for the new generation of mobile communication systems", including "Technical specifications for the fifth generation of mobile communication systems (5G) (RedCap/eRedCap)". Click on the link to view the original public consultation, and the comment period is until 25 November 2024.
• Land Radiocommunication Commission Report (Draft) - "Technical Conditions for the Complexity of Low-Power Radio Systems" - "Technical Conditions for the Complexity of Wireless LAN Systems" - "Technical Conditions for the Use of 5 GHz Wireless LAN in the Air". Click on the link to view the original public consultation, and the comment period is until 26 November 2024.