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In the United States, amateur radio licensing is governed by the Federal Communications Commission (FCC) under strict federal regulations. Licenses to operate amateur stations for personal use are granted to individuals of any age once they demonstrate an understanding of both pertinent FCC regulations and knowledge of radio station operation and safety considerations. Applicants as young as five years old have passed examinations and were granted licenses.〔5-year-old passes ham radio exam ()〕〔Girl Hams It Up for the World : Ham radio: At 5, she's maybe the youngest operator in U.S. Her mental skills are surprising. ()〕 December 2012 marked one hundred years of amateur radio operator and station licensing by the United States government. Operator licenses are divided into different classes, each of which corresponds to an increasing degree of knowledge and corresponding privileges. Over the years, the details of the classes have changed significantly, leading to the current system of three open classes and two grandfathered (but closed to new applicants) classes. == Current license classes == Amateur radio licenses in the United States are issued and renewed by the Federal Communications Commission without charge, although the private individuals who administer the examinations may recoup their expenses by charging a fee. Licenses currently remain valid for 10 years from the date of issuance or renewal. Renewal can be done on-line. *The entry-level license, known as Technician Class, is awarded after an applicant successfully completes a 35-question multiple choice written examination. The license grants full operating privileges on all amateur bands above 30 MHz and limited privileges in portions of the high frequency (HF) bands. *The next level, known as General Class, requires passage of the Technician test, as well as a 35-question multiple-choice General exam. General class licensees are granted privileges on portions of all amateur bands, and have access to over 83% of all amateur HF bandwidth. However some band segments often used for long distance contacts are not included. *The top US license class is Amateur Extra Class. This license requires the same tests as General plus a 50-question multiple-choice theory exam. Those with Amateur Extra licenses are granted all privileges on all US amateur bands. From February 17, 2015 onwards, the FCC stopped routinely sending paper copies of licenses to licensees〔http://www.arrl.org/news/fcc-paperless-amateur-radio-license-policy-goes-into-effect-on-february-17〕 (the official license being the FCC's electronic record). However, it would continue sending paper copies upon a licensee's request or a licensee could print it out online from the FCC's data base. 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 licensing in the United States」の詳細全文を読む スポンサード リンク
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