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marine search and rescue communications services and terminal devices
marine search and rescue communications services and terminal devices
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机译:海上搜救通信服务和终端设备
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摘要
A communication service equipment and a search and rescue terminal device for vessels that are set on board to provide radio communication service including at least one radio signal transmission and reception units, a modulation and demodulation unit, a location information receiving unit, a plurality of frequency conversion unit, signal processing units each connected to the frequency conversion unit, a main control unit, and control the signal processing unit.
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