Segal started at WFMU in September 1983, and the show grew in popularity around the world. Segal's presentation of music, news, and community events accompanied tens of thousands of listeners through their morning routine. Segal serves as
Master of Ceremonies for major New York area concerts and Jewish events, including the annual
HASC concert. Upsala College went out of business in 1995. However, station management had purchased the license from the college the previous year, and the station continued to function as an independent entity, moving from East Orange to
Jersey City, New Jersey, in 1998. Segal's program was retained during this transitional period and remained in the 6-9 am block Monday through Friday. Segal's advocacy for social causes and his longevity has propelled JM in the AM to be regarded as the radio program of record in the Jewish world. He is known for analyzing and probing issues from the perspective of the Jewish world. Influential members of the political world – from ambassadors to senators to chevrei Knesset – have sought time on the air and joined Segal in the studio. JM in the AM has been called the "Voice of Klal Yisrael (The Whole of Israel)". In early 2013, Segal expanded the show's reach with the launch of the
Nachum Segal Network. In addition to carrying JM in the AM live, his network contains an archive of the shows available on demand, as well as airing other Jewish and Israel themed shows. On September 20, 2016, Segal announced that his last show on WFMU was on December 1, and that afterward the show was to be available exclusively via the Nachum Segal Network. Segal said that the majority of those listening to the show did not listen via terrestrial radio anymore, and those who did could access the show via the app, website, or a telephone listen line. == Communal work==