业余无线电：通过双向无线电进行通信的业余爱好或消遣，通常追求因距离而具有挑战性的“DX” QSOs。
Amateur radio (also called ham radio) is the use of designated radio frequency spectra for purposes of private recreation, non-commercial exchange of messages, wireless experimentation, self-training, and emergency communication. The term "amateur" is used to specify persons interested in radio technique solely with a personal aim and without direct pecuniary interest, and to differentiate it from commercial broadcasting, public safety (such as police and fire), or professional two-way radio services (such as maritime, aviation, taxis, etc.
業余无线电
业务无线电
业馀无线电
业余无线电
业馀无线电
业余无线电
[电子]业余无线电；业余无线电爱好者
In 1969, the Radio Amateur Satellite Corporation (AMSAT) was created in order to foster ham radio enthusiasts' participation in space research and communication.
1969年，国际业余卫星组织（AMSAT）成立了，其目的是促进业余无线电爱好者参与并讨论太空研究。
When he was young, he boxed, fished, did amateur radio and belonged to fraternities.
"For that all credit must go to Milton Keynes Amateur Radio Society, " said Mr Clark.
More than 70 of these OSCARs for Orbiting Satellite Carrying Amateur Radio have been launched and some have a limited data networking capability for text messaging.