The is a national non-profit organization for amateur radio enthusiasts in Japan. JARL was founded in 1926 by Robert Masayuki Hisamoto and Japanese radio communication enthusiasts whose stated aim was to promote the development and utilization of radio wave technology as a medium. JARL says its current membership comprises the largest number of radio stations in the world, and credits its growth to "the devoted efforts of pioneering hams, who took the history of amateur radio to heart and guided it through the changing and challenging winds of technology and radio regulations".Japan Amateur Radio League (2008). "Japan Amateur Radio League". Retrieved Feb. 19, 2008. JARL is the national member society representing Japan in the International Amateur Radio Union.International Amateur Radio Union (2008). "Member Societies". Retrieved Feb. 21, 2008.
Tokyo Ham Fair Tokyo Ham Fair is an annual hamfest with world-wide attendees. The 2024 Japan Amateur Radio League convention received over 40,000 paying attendees in 2022.
See also International Amateur Radio Union Ministry of Internal Affairs and Communications Amateur radio call signs of Japan
References
https://hamgallery.com/qsl/country/Alaska/kl7am.htm