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    YONKERS — The inventor of FM radio lived in this city for much of his young life. Yet, until recently, the only visible reminder of Edwin Armstrong’s legacy here was his 425-foot radio tower rising above the Palisades cliffs.

    That has changed with the installation of a local Armstrong memorial at Yonkers’ Hudson-Fulton Memorial Park on Warburton Avenue near his childhood home.

    Local historians and city officials will dedicate the commemorative plaque at 1 p.m. Monday at the park, which offers views of Armstrong’s historic Alpine (N.J.) Tower across the Hudson River.

    Mayor Mike Spano said the inventor, who died in 1954, “changed the world of communications forever.”

    “Years since his invention, Yonkers is rightfully celebrating the life and legacy of Mr. Armstrong,” Spano said.

    Born in New York City in 1890,Armstrong moved to 1032 Warburton Ave. with his family at age 12. It was in his parents’ attic there, as a Columbia University student, he invented the regenerative circuit, the super-heterodyne receiver and other electronics that became widely used in modern radio receivers.

    Modern radio and TV receivers as well as many types of cellphones use super-heterodyne technology.

    In the 1930s, Armstrong pioneered wide-band frequency modulation, or FM, radio, touting it as a more efficient alternative to the often static-filled amplitude modulation, or AM, signals of the time.

    Armstrong built his 425-foot transmission tower in 1937 in Alpine, and the first FM radio station began broadcasting there two years later, according to a history by Columbia University.

    Major networks used the Alpine tower to broadcast signals after the Sept. 11, 2001, terror attacks destroyed transmitters at the World Trade Center.

    The memorial plaque is the brainchild of Steve Klose, a New Jersey resident and history buff who last year began lobbying Yonkers officials and launched a fundraising campaign for the memorial.

    Also expected to attend Monday’s dedication are members of Armstrong’s family and representatives from the Yonkers Historical Society.

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