A common name for amateur radio operators. Qualified individuals who can set up private shortwave radio stations using voice or Morse code. The word may have originated from ham, meaning a good actor, or it may be a corrupted version of the word "am" from amateur. Amateur radio was first attempted in the United States in the early 20th century, and quickly spread to other countries around the world. In Japan, experiments began around 1925, and the Japan Amateur Radio League (JARL) was formed, with stations officially permitted in 1927. Amateur radio was temporarily banned during World War II, but the number of amateur radio operators increased rapidly after the war. Amateur radio operators also contribute to communication with hams in the International Amateur Radio League (JARU) and in emergency communications. Amateur radio is regulated by the Radio Law and related laws, and communication related to financial gain is prohibited. To set up a radio station, a license is issued by the Minister of Internal Affairs and Communications to anyone who has obtained the qualifications of an amateur radio operator through a national examination or training course, regardless of age, sex, or occupation. There are four types of amateur radio operator qualifications, from Class 1 to Class 4, and each level specifies the scope of radio equipment operation that can be performed. (→ Shortwave communication) ham |
アマチュア無線家の通称。音声やモールス符号による私設の短波無線局を開設することのできる有資格者。語源は,大根役者という意味の hamからきたとも,アマチュア amateurの amが転訛したものともいわれる。アマチュア無線は 20世紀初頭にアメリカ合衆国で試みられたものが,世界各国に急速に普及した。日本でも 1925年頃から実験が始まり,日本アマチュア無線連盟 JARLが結成され,1927年からは正式に開局が認められた。第2次世界大戦中は一時禁止されたが,大戦後,アマチュア無線家は急激に増加した。国際アマチュア無線連盟 JARUのハムと交信,非常災害時の通信などにも貢献している。アマチュア無線は電波法とその関連法規に規制され,金銭的利益にかかわる通信は禁じられている。無線局の開設には年齢,性別,職業にかかわりなく,国家試験や養成課程などによりアマチュア無線技士の資格を取得した者に総務大臣の免許が交付される。アマチュア無線技士の資格は第1級から第4級までの 4種類に分かれ,それぞれ行なうことができる無線設備の操作の範囲が定められている。(→短波通信)
ハム
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