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Amateur radio - Wikipedia, the free encyclopedia |
 | | In fact, amateur radio's role in public service and international relations is such an integral part of the hobby that the United States Federal Communications Commission has gone so far as to codify some of these items in its amateur radio regulations. |
 | | Amateur radio operators who are doctors, engineers, educators, lawyers, entertainers, electricians, farmers, bankers, and government employees (to name a few) have frequently found practical on-the-job applicability to ideas learned through the study of electronics and communications in amateur radio. |
 | | The propagation of radio waves at these frequencies, especially during anomalous conditions, is poorly understood, and amateurs lead the way in learning about these, although high absorption of water and oxygen molecules in this region of the electromagnetic spectrum often limits practical uses to kilometres or tens of kilometres. |
| en.wikipedia.org /wiki/Ham_radio (5367 words) |
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