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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 ARRL provides extensive documentation on how to conduct emergency radio communications, including its Public Service Communications Manual. [8] Radio clubs independent of the ARRL and ARES also participate in emergency communications activities in some areas, and some non-radio organizations have their own amateur arm.
Radio amateurs have been early in arranging relay leagues, as is reflected in the name of the organization of American Radio Relay League (ARRL).. Radio amateur message relay operations were originally conducted in the first two decades of the 20th century using Morse code via spark-gap transmitters.
The QN Signals are defined in ARRL document FSD-218 [3] and listed in the ARRL Operating Manual. [4]: 5–3 Although these codes are within the Aeronautical Code signals range (QAA–QNZ) and thus conflict with official international Q signals beginning with QN, the ARRL informally queried FCC's legal branch about the conflict.
An amateur radio net, or simply ham net, is an "on-the-air" gathering of amateur radio operators.Most nets convene on a regular schedule and specific frequency, and are organized for a particular purpose, such as relaying messages, discussing a common topic of interest, in severe weather (for example, during a Skywarn activation), emergencies, or simply as a regular gathering of friends for ...
ARRL field services will send the amateur a manual which describes the amateur auxiliary, how the official observer is supposed to conduct business, and several technical details concerning FCC rules and regulations. The potential official observer also receives a self-paced test that they must pass to receive the appointment.
Visual representation of traffic passing of ARRL radiograms between various nets, from Wisconsin to California. The National Traffic System (NTS) is an organized network of amateur radio operators sponsored by the American Radio Relay League for the purpose of relaying messages throughout the U.S. and Canada.
Proposed AX.25 Level 2 Version 2.0 Changes (PDF). 7th Computer Networking Conference. American Radio Relay League . p. 58. These changes have been collected by this author from various sources, and were recommended by a working group of the ARRL Digital Committee which met in July of 1988.
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