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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 .
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 ...
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 ...
Amateur radio contests on VHF and UHF are often scored based on the distance of contacts, typically 1 point per kilometre, [3] so there is a need for amateurs to exchange their locations over the air. To facilitate this, following the growth of the sport in the 1950s, the German QRA locator system was adopted in 1959. [2]
For example, the peak envelope power limits for the highest available license classes in a few selected countries are: 2.25 kW in Canada; [67] 1.5 kW in the United States; 1.0 kW in Belgium, Luxembourg, Switzerland, South Africa and New Zealand; 750 W in Germany; 500 W in Italy; 400 W in Australia, India, and the United Kingdom; and 150 W in Oman.
Although the Amateur Radio Emergency Service is a program (and trademark) of the American Radio Relay League (ARRL) in the U.S., the structure is more supportive than directive in nature, providing mostly for mutual aid in the event of large-scale emergencies. As long as local units are operating in the best interests of Amateur Radio in ...
At this time the United States also started to participate with international regulations, and one of the first acts was to be formally assigned call letter blocks. The initial assignment allocated all call signs starting with "N" and "W", plus the range KDA-KZZ, for use by the United States. [29] (Initially KAA-KCZ were assigned to Germany ...
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 ...