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  • RF Exposure Calculator

    The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, information and resources. Learn More

  • Arduino

    The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, information and resources. Learn More

  • 2013 ANNUAL REPORT -- WORKING.indd

    May 14, 2014 ... Founded in 1914 by Hiram Percy Maxim and Clarence Tuska, the American Radio. Relay League (ARRL) is the national association for Amateur Radio ... Learn More

  • Keeping a Log

    The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, information and resources. Learn More

  • The Polar Explorer The Polar Explorer

    The high cost of high power is rooted in the evolution of ham radio technology and equipment. Figure 1A shows the traditional modulation process of a high-power ... Learn More

  • Media Hits

    “Ham radio operators on the air for ARRL Field Day” / Washington Daily News (North Carolina) June 15, 2025 -- The Pamlico Amateur Radio Club is an ARRL ... Learn More

  • This Month in QEX

    The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, information and resources. Learn More

  • QST Now Offering a Column for Radio Clubs

    Jul 22, 2022 ... The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, ... Learn More

  • ARRL Teachers Institute Kicks Off Summer Cohorts

    Jun 14, 2024 ... Teachers are gathered from around the United States to learn about amateur radio, and how to use it in their classrooms as part of science, ... Learn More

  • ARRL Releases New Ham Radio Promotional Posters

    Aug 3, 2017 ... The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, ... Learn More

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