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| 2200-meter band ： ウィキペディア英語版 |
2200-meter band
The 2200 meter or 136 kHz band is the lowest frequency band in which amateur radio operators are allowed to transmit. It was formally allocated to amateurs at the 2007 World Radiocommunication Conference (WRC-07). The band is available on a secondary basis in all ITU regions with the limitation that amateur stations have maximum radiated power of 1 Watt effective isotropic radiated power.
The 2200 meter band is in the low frequency (LF) region, just below the 153–279 kHz longwave broadcasting band.
==History==
The International Telecommunication Union's 2007 World Radiocommunication Conference (WRC-07) in Geneva agreed a secondary allocation of 135.7–137.8 kHz to the Amateur Service on Friday, 9 November 2007. Prior to the ITU formal allocation some countries did have access or predecessors. For example in the UK, operation on the even lower frequency of 73 kHz had been allowed from 1996 until 2003. A small number of countries also have limited license-exempt use (LowFER).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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