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The history of amateur radio runs from the wireless experimenters of the early 1900s, who built spark transmitters before there were any rules to follow, to today's operators working through satellites, software and digital modes. The Radio Act of 1912 restricted amateurs to wavelengths of 200 meters and shorter, then thought nearly worthless, yet in 1923 hams completed the first two-way transatlantic amateur contact. The ARRL, founded in 1914 by Hiram Percy Maxim and Clarence D. Tuska, organized early message relays, and amateurs later embraced single sideband, repeaters and packet radio. Read more…