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  2. ARRL Numbered Radiogram - Wikipedia

    en.wikipedia.org/wiki/ARRL_Numbered_Radiogram

    In use, ARRL Numbered Radiograms are messages encoded as one or two numbers. The numbers are always written down as words, and are always preceded by the procedure word "ARL". Throughout their transit in the Amateur radio National Traffic System, they retain this format and are only expanded to their plain-English meaning when delivered by a Ham.

  3. ARRL Radiogram - Wikipedia

    en.wikipedia.org/wiki/ARRL_Radiogram

    An ARRL radiogram is an instance of formal written message traffic routed by a network of amateur radio operators through traffic nets, called the National Traffic System (NTS). It is a plaintext message, along with relevant metadata (headers), that is placed into a traffic net by an amateur radio operator.

  4. National Traffic System - Wikipedia

    en.wikipedia.org/wiki/National_Traffic_System

    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.

  5. Radiogram (message) - Wikipedia

    en.wikipedia.org/wiki/Radiogram_(message)

    An ARRL radiogram is an instance of formal written message traffic routed by a network of amateur radio operators through traffic nets, called the National Traffic System (NTS). It is a plaintext message, along with relevant metadata (headers), that is placed into a traffic net by an amateur radio operator.

  6. Radio code - Wikipedia

    en.wikipedia.org/wiki/Radio_code

    QN Signals, published by the ARRL and used by Amateur radio operators to assist in the transmission of ARRL Radiograms in the National Traffic System. R and S brevity codes, published by the British Post Office in 1908 for coastal wireless stations and ships, superseded in 1912 by Q codes [ 1 ]

  7. Amateur radio net - Wikipedia

    en.wikipedia.org/wiki/Amateur_radio_net

    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 ...

  8. Amateur radio call signs - Wikipedia

    en.wikipedia.org/wiki/Amateur_radio_call_signs

    Ancillary prefixes or suffixes further identify the location and/or operating condition of an amateur operator. According to the Canada/United States Operating Agreement treaty [ 14 ] amateurs from one country operating in the other sign with their home call sign, but attach the call area prefix where they are operating to their call.

  9. American Radio Relay League - Wikipedia

    en.wikipedia.org/wiki/American_Radio_Relay_League

    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 .