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| name2 = IEEE C band | freq2 = 4 – 8 GHz | wave2 = 7.5 – 3.75 cm | bands2 = }} The C band is a name given to certain portions of the electromagnetic spectrum, including wavelengths of microwaves that are used for long-distance radio telecommunications. The IEEE C-band (4 to 8 GHz) and its slight variations contain frequency ranges that are used for many satellite communications transmissions, some Wi-Fi devices, some cordless telephones, and some weather radar systems. For satellite communications, the microwave frequencies of the C-band perform better under adverse weather conditions in comparison with the Ku band (11.2 GHz to 14.5 GHz), microwave frequencies used by other communication satellites.〔(What is C Band ) page from tech-faq (accessed Aug. 14, 2008)〕 Rain fade – the collective name for the negative effects of adverse weather conditions on transmission – is mostly a consequence of precipitation and moisture in the air. == NATO C-band== The NATO C-band is the range of radio frequencies from 500 to 1000 megahertz (MHz) in the system of letter designations for frequency bands used by NATO for electronic countermeasure (ECM) applications. This is equivalent to wavelengths between 0.6 and 0.3 m. It is a subset of the UHF band as defined by the ITU and the IEEE. This terminology is rarely used in North America. 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「C band」の詳細全文を読む スポンサード リンク
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