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Long Range Service Terrestrial communication

Long Range Service Terrestrial communication.

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Long Range Service Terrestrial communication

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  1. Long Range ServiceTerrestrial communication • HFprovides long-range service for use in the ship-to-shore and shore-to-ship directions. In areas covered by Inmarsat, it can be used as an alternative to satellite communications and outside these areas, it will provide the only long-range communications capability. • DSC (kHz)Telephony (kHz) Radiotelex (kHz) • - 4 MHz 4297.5 4125 4177.5 • - 6 MHz 6312.0 6215 6268.0 • - 8 MHz 8414.5 8291 8376.5 • - 12 MHz 12577.0 12290 12520.0 • - 16 MHz 16804.5 16420 16695.0

  2. Medium-Range ServiceTerrestrial communication • A medium-range service is to be provided on frequencies in the 2MHz band (MF). In the ship-to-shore, ship-to-ship and shore-to-ship directions, the following distress frequencies are used: • DSC – 2187.5 kHz • Radiotelephony – 2182 kHz • Radiotelex (NBDP) – 2174.5 kHz • NAVTEX – 518 kHz

  3. Short-Range ServiceTerrestrial communication • VHF will provide a short-range service on the following distress frequencies: • DSC – 156.525 MHz(channel 70) • Radiotelephony – 156.8 MHz(channel 16)

  4. Terrestrial Communications

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