Updated June 8, 2025
Where radio in the USA is local in service area and mainly national in ownership, radio in Japan is more regional in service area and local in ownership. For AM and FM full-service broadcasters, a broadcast license normally allows them to broadcast throughout their prefecture. Japan has 47 prefectures. Some major cities such as Tokyo and Osaka will have multiple broadcast stations in the same band but in most areas, it is an average of one AM and one FM station per prefecture. There is no cross-ownership between full service AM and full service FM stations. Most AM stations also have a license for television within their prefecture area.
Spectrum use in Japan
In Japan, the FM broadcast band is in the spectrum 76~90 MHz. This means that only about 2 MHz of the FM broadcast band is receivable using a non-Japanese FM radio. Prior to the analog shutdown, the rest of what we in the US know as the FM broadcast spectrum was used for three TV channels. As you read below, you will see this spectrum has been reallocated to a 5 MHz extension of the FM broadcast band and to introduce future multi-media broadcasting services (a concept that was pretty much abandoned). There is also the potential that the FM band will be extended in the future to include 95~99 MHz.
Since Japan is in ITU region 3, AM stations are spaced 9 kHz apart. There is a significant effort taking place to discontinue operations, especially among the commercial stations on AM and replacing with FM transmissions in the 90~95 (and potentially 90~99) MHz band.
In Japan, there are several types of broadcasters:
AM stations - These are the legacy commercial radio stations in Japan. AM stations usually consist of a higher powered transmitter and potentially additional lower power (100 watt) AM stations located in other areas of the station's prefecture. Some AM stations do operate a small number of FM stations within the 76~90 MHz FM spectrum in places where AM would not be feasible such as the islands in Kagoshima and Okinawa. There are 48 AM radio licensees in Japan.
FM stations - Full service FM stations are similar in structure to AM stations where they have a main transmitter and then relay stations throughout the prefecture(s) that they are licensed to serve. Unlike AM stations, there is no cross-ownership between FM stations and TV. There are 51 FM radio licensees in Japan.
Foreign language FM stations - In addition to the full-service FM stations, a small number of FM stations have been licensed to provide programming in languages other than English. These stations are located in Tokyo, Osaka, Nagoya and Fukuoka.
Community FM stations - Similar in some ways to the LPFM stations within the United States, Community radio stations can be established by any organization except those that already own broadcast stations or are controlled by foreign nationals. Owners include non-profit and for-profit organizations and includes several cable television providers and even one station owned by a professional baseball team.
Community stations are authorized to meet the needs of their local area at the city (-shi) or county (-gun) level and are authorized to provide foreign language programming. Community stations are expected to provide at least 60% original programming as opposed to using any kind of network or syndicated programming. Unlike in the USA, Japanese community FM stations are allowed to air commercials.
Community stations are authorized 20 watts transmitter output power (TPO) but can use gain antennas to achieve higher effective radiated powers (ERP). Community stations use a call sign that begins with JOZZ followed by a digit that indicates the region of Japan they are in and two sequentially issued letters. (example: JOZZ3AB-FM) Japan currently has 300 licensed community broadcast stations.
The Japan Community Broadcasters Association represents and provides services to many of these stations.
Community Ties and Revitalization: The Role of Community Radio in Japan - Tomoko Kanayama - Keio Communication Review #29, 2007. Keio University.
Temporary Disaster FM stations - Local governments may request the MIC to authorize broadcast stations that are set up on a temporary basis to respond to a disaster. In the Tohoku (northeastern) region of Japan, several of these stations were set up in the aftermath of the March 11, 2011 earthquake. In late 2015, stations were set up to respond to heavy rainstorms that left flooding.
AM Complementary FM stations - With the elimination of analog television, Japan placed all of their digital television on UHF. In Japan, the spectrum from 90 to 108 MHz used to be three analog television channels. The spectrum from 90 to 95 MHz has been realocated to analog FM sound broadcasting. The MIC is starting to permit AM broadcast licensees to place stations within this spectrum and is considering to expand the spectrum further to include 90 to 99 MHz. Whether this is going to result in a "migration" from AM to FM (e.g. shut down the AM transmitters) has yet to be seen. There are currently about 125 transmitters either on the air or coming soon to this spectrum. This service is being marketed in Japan as "Wide FM" and more FM radios with full 76~108 MHz capability are being marketed.
Nippon Hoso Kyokai (NHK) - In addition to the commercial broadcasters, NHK is the nation's public broadcaster. Nationwide, NHK operates two AM broadcast networks (Radio 1 and Radio 2), an FM network (NHK-FM) and two television networks (one for general entertainment and the other is an educational channel). NHK has local studios in most prefectures that can originate its own local programming. All households with televisions, PCs with television tuners and smartphones with One Seg reception capability must pay a "receiving fee" of 12,276 yen or about USD $85 per year (As of June 8, 2025). This fee is higher if you have satellite (21,765 Yen/USD $150). There is no receiving fee for radio only.
Multi-media Broadcasting - With the elimination of analog television, the spectrum from 95 to 108 MHz was originally set aside for local multi-media broadcasting stations. These stations were expected to operate a platform of audio, video and data-based services. This spectrum was divided into three 3.9 MHz wide channels. The original licensee, VIP Co. Ltd. was the multi-media broadcast licensee in this spectrum. The concept would eventually be abandoned and now, in the Study Group on the State of Broadcasting in the Digital Age, the MIC is looking at expanding the FM broadcast band further to include 95~99 MHz for additional complementary AM broadcast stations and an expansion for relay stations for both current AM and FM broadcasters.
There is also spectrum set aside in the VHF-HI band spectrum from 207.5 to 220.0 MHz (which could hold promise for DAB). There is currently no licensee for this spectrum.
radiko - Streaming of Japanese broadcast stations
radiko is a streaming service in Japan that can be used to listen to broadcast radio stations. Commercial and NHK radio services are available through the platform. The platform can be accessed either through a website or on a smartphone app. The Radiko service is geofenced so listeners will only receive the radio stations for their local area. Radiko offers a premium option that allows "out of town" stations to be heard throughout Japan. radiko is not available for listening outside of Japan (listeners outside Japan may be able to listen using a VPN).
radiko normally does not include the 20-watt community stations. Many of the community stations are available for streaming within Japan using the Radimo app. The JCBA provides streaming for community stations at jcbasimul.com. Like radiko, the Radimo app and jcbasimul.com are geoblocked and cannot be used for listening outside of Japan.
Listening to Japanese music outside of Japan
For those wishing to hear Japanese popular music, from current to classic hits, J1 Radio provides three or four channels (depending on where in the world you are), including:
- J1 HITS - Current hits as well as recent music from the Reiwa era (2019~today).
- J1 XTRA - Classic hits from the Heisei era (1990s, 2000s, 2010s).
- J1 GOLD - Classic hits from the latter part of the Showa era (1960s, 1970s, 1980s).
- J1 HD - The United States' only full-time Japanese Pop Music radio station playing a variety of songs from all three J1 channels. Airing locally on KBUU-LP, 99.1 HD3, Malibu, CA. Streaming of J1HD is only available outside of the United States.
For more information or to download the official J1 mobile app, which also includes other REC non-Japanese program offerings, such as Delmarva FM and MICHI-FM, visit j1fm.tokyo.
The J1 channels are more solid music presentations with minimal talk, which is a sharp contrast from Japanese radio, which is on average, split between talk and music. They are programmed more like American radio than they are like Japanese radio, however, the stations (especially HITS and GOLD) do have a significant following within Japan.
Study Group on the State of Broadcasting in the Digital Age
(Note: Links in this section are in Japanese)
In 2021, the MIC initiated the Study Group on the State of Broadcasting in the Digital Age. This project had the objective of examining the future of broadcasting and the state of the broadcasting system from a medium- to long- term perspective, taking into account, the Regulatory Reform Implementation Plan and Proposals from Young People for Information and Communications Administration. The project is taking into consideration the significance and role of broadcasting in the digital age, the future of broadcasting network infrastructure, how broadcast content should be distributed over the internet and what the broadcasting system should be in the digital age.
In 2022, the MIC collected public comments on this project. The consultation received 110 responses, mainly from broadcast companies, tech companies and other interested parties. There were two additional comment periods in this inquiry.
While the working group is being done in regards to both radio and television, the major radio related issues being considered include:
- Transition of broadcasters, or at least relay stations to the Radiko platform.
- Expansion of the FM broadcast band by adding an additional 4 MHz from 95 to 99 MHz for additional AM complementary FM stations and the ability for existing FM broadcasters to use the spectrum for more relay stations.
As of June 8, 2025, there have already been 32 meetings conducted on this study, and there are more meetings to come.
Looking up Japan radio and TV stations
REC's FCCdata.org does include full searching capabilities for AM, FM and most TV transmitters in Japan. This data is manually updated by REC Networks approximately once or twice per year.
The use of 76~88 MHz in the USA
In the USA, the spectrum 76 to 88 MHz is used for television channels 5 and 6. These two channels are undesirable for digital television for various reasons due to the propagation characteristics of low-band VHF, the types of receiving antennas necessary and for Channel 6 stations, the need to protect full-power FM stations operating on 88 to 92 MHz.
REC has always felt that this spectrum would be better used for the expansion of FM broadcast stations. 60 channels can be added in the spectrum between 76.1 and 87.9 to allow for the migration of lower powered AM stations as well as the expansion of lower power commercial and non-commercial FM broadcast services.
Now with new FM stations entering the band between 90 and 95 MHz in Japan, we still start to see more "WIDE FM" radio receivers become available. These radios can be easily imported to the USA for a full 160-channel FM broadcast service.
Click here for a comprehensive list of different radio models in Japan that support the entire 76 to 108 MHz band. Despite what the nay-sayers claim, the radios are out there and they can be on a boat tomorrow.
