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2182 kHz
The radio frequency of 2182 kHz (kilohertz) is the international calling and distress frequency for maritime radiotelephone communications on the marine MF bands.〔http://www.jproc.ca/rrp/distress.html ''Distress Communications, RADIO COMMUNICATIONS AND SIGNALS INTELLIGENCE IN THE CANADIAN NAVY''〕 ==Transmission modes== Transmissions on 2182 kHz commonly use single-sideband modulation (SSB) (upper sideband only). However, amplitude modulation (AM) and some variants such as vestigial sideband are still in use, mainly by vessels with older equipment and by some coastal stations in an attempt to ensure compatibility with older and less sophisticated receivers.
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「2182 kHz」の詳細全文を読む
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