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ham Radio also known as Amateur Radio is communication on designated bands for non-commercial use. The ARRL is an organization that helps to organize ham Radio. The American Radio Relay League (ARRL) is the largest membership association of amateur radio enthusiasts in the USA. ARRL is a non-profit organization, and was founded in 6th April 1914 by Hiram Percy Maxim.Ham radio also known as amateur radio is communication on designated bands for non-commercial use. The ARRL is an organization that helps to organize ham Radio. The American Radio Relay League (ARRL) is the largest membership association of amateur radio enthusiasts in the USA. ARRL is a non-profit organization, and was founded in 6th April 1914 by Hiram Percy Maxim.