RKK Kumamoto Broadcasting
Broadcasting company in Kumamoto, Japan
Last updated August 31, 2026
AI crawler reads
No AI crawler has read this profile since Oct 28, 2026.
Overview
RKK Kumamoto Broadcasting Co., Ltd., commonly known as RKK, is a regional commercial broadcaster headquartered in Kumamoto, Japan. It operates both a radio service and a television service for Kumamoto Prefecture, making it the prefecture’s only commercial broadcaster to maintain both media businesses. Its television operations are affiliated with the Japan News Network (JNN), while its radio operations participate in the Japan Radio Network (JRN) and the National Radio Network (NRN). The company originated in a proposal made on January 4, 1953, by Futo Izu, then president of Kumamoto Nihon Shimbun. The proposal led to the establishment of a private radio station funded by the newspaper group. Broadcasting began at 6:10 a.m. on October 1, 1953, under the name Radio Kumamoto. The opening program was titled “Farm House Time.” The station achieved an unusually strong early financial performance for Japan’s private broadcasting industry, reporting a profit in its first half-year and repaying its start-up debt by 1955, according to the company’s historical account. As the business expanded and prepared to enter television, Radio Kumamoto developed new facilities and increased its capital. Television broadcasting began on April 1, 1959. The company became the second television station in Kumamoto Prefecture and the first private television station there, following NHK’s local service. Its television signal was also receivable in many areas of neighboring Saga Prefecture, prompting the opening of a Saga branch in 1960. That branch continued until 1974, when the growth of television services in Saga reduced the need for the arrangement. The company adopted its current name, Kumamoto Broadcasting, in 1961 to reflect the increasing importance of television while retaining the RKK initials associated with its radio origins. Television operations joined the TBS television network in 1967, placing RKK within the network structure that later became JNN. The company expanded its regional presence through a Yatsushiro branch in 1971 and strengthened its facilities through the construction of RKK Hall, completed in 1972. It also diversified into related businesses including real estate and travel through subsidiaries and affiliated operations. RKK has combined local news gathering with network programming and community-oriented broadcasting. Its reporting on the 1973 Taiyo Department Store fire received a JNN Award, and the station also broadcast coverage of the Minamata disease court judgment that year. Other notable programming initiatives included a 1992 co-production with Kumamoto Kenmin Television and, from 2012, coverage of the Kumamoto Castle Marathon. The marathon broadcast reportedly achieved a 33.2 percent average audience rating in its first year of coverage. The broadcaster modernized its facilities and identity as the industry moved toward digital transmission. It introduced a new green-and-red logo in 1984, completed a new headquarters complex in 1999, launched its official website in 1996, and began digital terrestrial television broadcasting in 2006. Analog television transmissions ended in 2011. RKK later pursued cross-platform cooperation with Kumamoto Asahi Broadcasting in 2019. For its seventieth anniversary in 2023, it introduced another logo, this time using blue-green as the dominant color. Today, RKK remains a locally focused radio and television company serving Kumamoto Prefecture. Its business scope centers on commercial broadcasting, local journalism, entertainment, event and program production, advertising services, and related activities conducted through its broader corporate structure. Its regional identity is reinforced by its long-running presence, local facilities, prefectural news coverage, and participation in community events.
History
RKK Kumamoto Broadcasting traces its origins to a January 1953 proposal by Futo Izu, president of Kumamoto Nihon Shimbun, to establish a private radio station in the prefecture. The proposal received unanimous support from those present, and the new broadcaster was organized with funding from the newspaper. On October 1, 1953, it began operations as Radio Kumamoto. The first transmission aired at 6:10 a.m. and opened with “Farm House Time.” The station performed strongly during its early years. It recorded a profit of 510,000 yen during its first half-year and had repaid its broadcasting-related debts by 1955. These results were notable because many Japanese private broadcasters operated at a loss during their first several years. Expansion soon required larger premises. In 1957, the company acquired land near the local electric and communications authorities, began constructing a new headquarters in May 1958, and increased capital to prepare for television. The replacement headquarters was completed in March 1959. Television broadcasting commenced on April 1, 1959. Radio Kumamoto became the second television station in the prefecture and the first private one. The station’s signal reached much of Saga Prefecture, which at that time had limited local television availability. In response to requests from viewers and local interests, RKK opened a Saga branch in June 1960. The branch remained in operation until 1974, when the expansion of television services in Saga made it less necessary. In 1961, the company changed its name from Radio Kumamoto to Kumamoto Broadcasting. The change recognized television’s growing importance while preserving the RKK initials. By 1963, the company had grown from 49 employees at launch to more than 200 and reported substantially higher profits. RKK introduced color television broadcasting in October 1966, and its television operation joined the TBS television network in 1967. A Yatsushiro branch opened in April 1971 to improve news gathering and advertising activity in southern Kumamoto Prefecture. RKK Hall was completed on April 7, 1972. The facility housed functions used by the broadcaster and its subsidiaries. RKK’s local journalism received national network recognition in 1973 when its coverage of the Taiyo Department Store fire won a JNN Award. The company also broadcast the court judgment concerning Minamata disease, an important event in the region’s postwar social and environmental history. During the mid-1970s, it diversified beyond broadcasting through subsidiaries such as RKK Development and entered businesses including real estate and travel. In 1975, it introduced a full two-day weekend system, reportedly becoming the fifth private radio and television station in Kyushu to do so. The company refreshed its logo in 1984 with green and red as its principal colors. That year it also began construction of a second RKK Hall facility, completed as a building containing a television studio, offices, and a radio recording studio. In 1992, RKK and Kumamoto Kenmin Television jointly produced “Here is RKKT,” an unusual example of cooperation between local commercial television stations. RKK launched its official website in 1996. A new headquarters complex was completed on August 2, 1999. It included an eight-story office building and a three-story studio building, providing infrastructure designed for the coming digital broadcasting era. RKK began digital terrestrial television broadcasting in 2006 and discontinued analog television signals on July 24, 2011. In 2012, it began broadcasting the Kumamoto Castle Marathon, extending its role in regional public events and achieving a reported 33.2 percent average audience rating for the coverage. RKK continued to develop collaborative and brand initiatives in the following decade. It worked with Kumamoto Asahi Broadcasting on cross-platform cooperation in 2019 and marked its seventieth anniversary in 2023 with a new blue-green logo. The company remains an active regional broadcaster, operating radio and television services and producing local news, information, entertainment, advertising, and event-related content for Kumamoto Prefecture.
- 2023
Seventieth-anniversary identity update
[1]RKK introduces a new blue-green logo for its seventieth anniversary.
- 2012
Kumamoto Castle Marathon coverage begins
[1]RKK begins broadcasting the Kumamoto Castle Marathon and reports a strong first-year audience result.
- 2011
Analog television ends
[1]The company permanently shuts down its analog television signals on July 24.
- 2006
Digital terrestrial television launches
[1]RKK begins digital terrestrial television broadcasting.
- 1999
New headquarters completed
[1]RKK completes a new office and studio complex designed to support modern broadcasting operations.
- 1996
Official website launches
[1]RKK establishes an official website as part of its expansion into online communication.
- 1984
New logo and studio facility
[1]RKK introduces a green-and-red logo and begins developing a second hall containing television and radio production facilities.
- 1973
Local reporting receives JNN recognition
[1]RKK’s report on the Taiyo Department Store fire receives a JNN Award.
- 1972
RKK Hall is completed
[1]RKK completes a major hall facility used by the broadcaster and related companies.
- 1971
Yatsushiro branch opens
[1]The company establishes a Yatsushiro branch to strengthen coverage and advertising operations in southern Kumamoto.
Products and positioning
A long-established, locally rooted commercial broadcaster combining television, radio, regional journalism, network programming, and community event coverage for audiences in Kumamoto Prefecture.
Commercial television broadcasting · 1959
RKK Television
RKK’s television service broadcasts local Kumamoto news, information, entertainment, sports, and network programming. It is affiliated with JNN and developed from the company’s 1959 entry into television. The service transitioned from analog to digital terrestrial transmission, with digital broadcasting beginning in 2006 and analog transmission ending in 2011.
Commercial radio broadcasting · 1953
RKK Radio
RKK’s radio operation is the company’s original service, launched in 1953 as Radio Kumamoto. It provides local news, talk, information, entertainment, and other radio programming for Kumamoto audiences and participates in the Japan Radio Network and National Radio Network affiliations.
Regional journalism and programming
Local news and information programming
RKK produces and distributes reporting focused on Kumamoto Prefecture, including regional public affairs, emergencies, community developments, and major local events. Its historical reporting on the Taiyo Department Store fire received a JNN Award, demonstrating the importance of local journalism within its broadcasting operation.
Sports and event broadcasting · 2012
Kumamoto Castle Marathon coverage
RKK’s coverage of the Kumamoto Castle Marathon extends its programming beyond scheduled studio and network content into a major community sporting event. The broadcaster began carrying the event in 2012, with the first reported coverage achieving a 33.2 percent average audience rating.
Marketing campaigns
- 2023Seventieth-anniversary logo refresh
Kumamoto Prefecture, Japan
RKK marked its seventieth anniversary with a new visual identity using blue-green as its primary color.
Outcome. The new logo served as the broadcaster’s anniversary-era corporate identity.
- 2012Kumamoto Castle Marathon broadcast
Kumamoto Prefecture, Japan
RKK began broadcasting the Kumamoto Castle Marathon as part of its community and sports programming.
Outcome. The first reported broadcast achieved a 33.2 percent average audience rating.
Brand decisions
2019
Cross-platform cooperation with Kumamoto Asahi BroadcastingStrategyBackground
Regional broadcasters were seeking ways to coordinate activity across changing media platforms.
Action taken
RKK and Kumamoto Asahi Broadcasting pursued cross-platform cooperation.
Aftermath
The cooperation broadened collaboration between two Kumamoto commercial broadcasters, although the available reference does not specify its detailed scope.
2006
Transition to digital terrestrial televisionGeneration changeBackground
Japanese television broadcasting was moving from analog transmission to digital terrestrial technology.
Action taken
RKK started digital terrestrial television broadcasting on December 1, 2006.
Aftermath
The company later ended analog television transmission in July 2011.
1961
Corporate name changed from Radio Kumamoto to Kumamoto BroadcastingStrategyBackground
Television operations were becoming more important than the original radio business.
Action taken
The company adopted the Kumamoto Broadcasting name while retaining the RKK initials.
Aftermath
The new name better represented the company’s combined radio and television activities.
1959
Launch of commercial television serviceProduct launchBackground
RKK had operated as a private radio station since 1953 and expanded as television became an increasingly important broadcasting medium.
Action taken
The company began television broadcasting on April 1, 1959.
Aftermath
RKK became the first private television station in Kumamoto Prefecture.
Sources2 sources
Cite this profile: Cite the canonical profile. /brand-wiki/rkk-kumamoto-broadcasting · Editorial policy · How profiles are compiled