Hiram Percy Maxim (September 2, 1869 - February 17, 1936) was co-founder of the American Radio Relay League and originally had the amateur call sign 1AW, and later W1AW, which is now the ARRL Headquarters club station call sign. His rotary spark gap transmitter "Old Betsy" has a place of honor at the ARRL Headquarters. Hiram Percy Maxim was a mechanical engineering graduate of the Massachusetts Institute of Technology. Wikipedia
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