国际电信联盟保留了1400- 1427MHz范围内的特殊无线电频段，亦称L -频段，特别供地球探测卫星和太空天文使用。

The International Telecommunications Union reserves a special radio band in the 1400-1427 MHz range, called the L-band, especially for Earth-observing satellites and space astronomy.

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国际电信联盟（ITU）的三个主要机构之一。它主要从事于远距离无线电通信的审批与推荐标准。

One of three main institution of the International Telecom munication Union ( ITU ). It mainly works at the examination and approval of remote radio communication and the recommendation of standards.

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渠道和部分波段内的超高频无线电频谱分配的部分国际电信联盟(itu)。

Channels and subbands within the UHF portion of the radio spectrum are allocated by the International Telecommunication Union (ITU).

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渠道和部分波段内的超高频无线电频谱分配的部分国际电信联盟(itu)。

Channels and subbands within the UHF portion of the radio spectrum are allocated by the International Telecommunication Union (ITU).

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