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Amateur radio call signs are allocated to amateur radio operators around the world. The call signs are used to legally identify the station or operator, with some countries requiring the station call sign to always be used and others allowing the operator call sign instead.〔(【引用サイトリンク】title=Amateur Radio (Intermediate) License (A) or (B) Terms, Provisions and Limitations Booklet BR68/I )〕 The International Telecommunication Union (ITU) allocates call sign prefixes for radio and television stations of all types. Since 1927 these have been used to uniquely identify operators and locate amateur stations within a geographical region or country of the world. Call signs meant for amateur radio follow the ITU's Article 19, specifically 19.68 and 19.69. Prefixes are assigned internationally, and a separating numeral plus suffix are added by a national body to produce this unique identifier. These prefixes are agreed upon internationally, and are a form of country code. Each country must only assign call signs to its nationals or operators under its jurisdiction that begin with the characters allocated for use in that country or its territories. In some countries, an operator may also select their own "vanity" call sign that conforms to local laws.〔(【引用サイトリンク】title=Common Filing Task: Obtaining Vanity Call Sign )〕 Some jurisdictions require a fee to obtain such a vanity call sign; in others, such as the UK, a fee is not required and the vanity call sign may be selected when the license is applied for. The FCC in the U.S. discontinued its fee for vanity call sign applications in September 2015.〔(【引用サイトリンク】url=http://www.arrl.org/vanity-call-sign-fees )〕 ==Formation of an amateur radio call sign== An amateur operator's call sign is composed of a prefix, a separating numeral and a suffix. The prefix can be composed of letters or numbers, the separating numeral is one from 0 to 9, and a suffix is from one to four characters where the last one has to be a letter. Examples of call signs and their constituent parts are as follows: Call signs begin with a one- two- or three-character prefix chosen from a range assigned by the ITU to the amateur's country of operation or other internationally recognized jurisdiction. This is not necessary always the amateur's country of citizenship. An individual operator is assigned a unique call sign beginning with this prefix and then completed with a separating numeral and suffix.〔(International Telecommunication Union country call sign assignments )〕 The beginning of the list of call sign ranges is: * AAA–ALZ United States of America * AMA–AOZ Spain * APA–ASZ Pakistan (Islamic Republic of) * ATA–AWZ India (Republic of) * AXA–AXZ Australia * AYA–AZZ Argentine Republic * A2A–A2Z Botswana (Republic of) * A3A–A3Z Tonga (Kingdom of) * A4A–A4Z Oman (Sultanate of) ''(concludes with...)'' * 9VA–9VZ Singapore (Republic of) * 9WA–9WZ Malaysia * 9XA–9XZ Rwandese Republic * 9YA–9ZZ Trinidad and Tobago 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Amateur radio call signs」の詳細全文を読む スポンサード リンク
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