Characteristics of a digital system@ named navigational data for broadcasting maritime safety and security related information from shore-to-ship in the maritime HF frequency band
This Recommendation describes an HF radio system@ named Navigational Data HF (NAVDAT HF)@ for use in the maritime mobile service@ operating in the frequency bands of Appendix 17 for digital broadcasting of maritime safety and security related information from shore-to-ship. The operational characteristics and system architecture of this radio system are included in Annexes 1 and 2. The two different modes of broadcasting data are detailed in Annexes 3 and 4. The NAVDAT HF is complementary to the NAVDAT 500 kHz@ described in Recommendation ITU-R M.2010 in terms of radio coverage.