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海上無線通信の現状 - soumu.go.jp

500kHz 2,182kHz VHF N-STAR 30kHz 300kHz ( )3 MHz ( )30 MHz ( )300 MHz ( )

特 徴. 遭難・安全通信: 無線通信導入時から、中波帯(500kHz)のモールス通信により実施。その後、中短波帯の無線電話

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Transcription of 海上無線通信の現状 - soumu.go.jp

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