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The American Radio Relay League (ARRL) is the largest membership association of amateur radio enthusiasts in the United States. ARRL is a non-profit organization and was co-founded on April 6, 1914, by Hiram Percy Maxim and Clarence D. Tuska of Hartford, Connecticut .
Typical awards include the QRP ARCI club's "thousand-miles-per-watt" award, available to anyone presenting evidence of a qualifying contact. QRP ARCI also offers special awards for achieving the ARRL's Worked All States, Worked All Continents, and DX Century Club awards under QRP conditions. Other QRP clubs also offer similar versions of these ...
In addition to contests, a number of amateur radio operating award schemes exist, sometimes suffixed with "on the Air", such as Summits on the Air, Islands on the Air, Worked All States and Jamboree on the Air. Amateur radio operators may also act as citizen scientists for propagation research and atmospheric science. [31]
ARRL World Grid Locator Atlas. Newington, CT: American Radio Relay League. 2007. Containing all 32,400 Maidenhead Locator Squares; IARU Locator of Europe. Potters Bar, UK: Radio Society of Great Britain. 1984. IARU Locator of Western Europe. Potters Bar, UK: Radio Society of Great Britain. 1985. (scale 1:2,000,000) ARRL Amateur Radio Map of ...
The NTS as it exists today was first outlined by George Hart, W1NJM (died 24 March 2013) in "New National Traffic Plan: ARRL Maps New Traffic Organization for All Amateurs" as part of the September 1949 issue of QST. While traffic passing between amateur radio operators was nothing new, Hart's system extended coverage of traffic capability in a ...
Another system, the ARRL's Logbook of The World (LoTW), allows confirmations to be submitted electronically for that organization's DX Century Club and Worked All States awards. Confirmations are in the form of database records, electronically signed with the private key of the sender.
Many amateurs also enjoy setting up and contacting special event stations. Set up to commemorate special occurrences, they often issue distinctive QSLs or certificates. . Some use unusual prefixes, such as the call signs with "96" that amateurs in the US State of Georgia could use during the 1996 Atlanta Olympics, [1] or the OO prefix used by Belgian amateurs in 2005 to commemorate their ...
Logbook of the World (LoTW) is a web-accessed database provided by the American Radio Relay League (ARRL) to implement a contact verification service among amateur radio operators. Using LoTW, radio amateurs (hams) are able to claim and verify contacts (QSOs) made with other amateurs, generally for claiming credit for operating awards, such as ...