Types of Communication in the Maritime Mobile ServiceDistress, Urgency, and Safety CommunicationsPublic CorrespondencePort Operations ServiceShip Movement ServiceIntership CommunicationsOn-Board CommunicationsTypes of Station in the Maritime Mobile ServiceShip StationCoast StationPilot Stations, Port StationsAircraft StationRescue Coordination Centre (RCC)The First RCCElementary Knowledge of Frequencies and Frequency BandsThe Concept of FrequencyThe Equivalence Between Frequency and WavelengthThe Radio Frequency SpectrumThe Unit of FrequencyThe Subdivision of the Most Significant Parts of the Radio Frequency SpectrumCharacteristics of FrequenciesDifferent Propagation Mechanisms: Propagation in Free Space, Ground Wave, Ionospheric PropagationCommunications SystemsModulationThe IonospherePropagation of MF FrequenciesPropagation of Different HF Frequency BandsPropagation of VHF and UHF FrequenciesKnowledge of the Role of the Various Modes of CommunicationDigital Selective Calling (DSC)RadiotelephonyNarrow Band Direct Printing (NBDP) TelegraphyFacsimileDataMorse TelegraphyElementary Knowledge of Different Types of Modulation and Classes of EmissionClasses of EmissionCarrier Frequency and Assigned FrequencyBandwidth of Different EmissionsOfficial Designations ofEmissionsUnofficial Designations of EmissionsFrequencies Allocated in the Maritime Mobile ServiceThe Usage of MF, HF, VHF, UHF, and SHF Frequencies in the Maritime Mobile ServiceThe Concept of Radio Channel, Simplex, Semi- Duplex, and Duplex, Paired and Unpaired FrequenciesFrequency Plans and Channelling SystemsMF Telephony and NBDP – Additional Provisions Applying to Region 1GMDSS Distress and Safety FrequenciesDistress and Safety Frequencies of the Pre-GMDSS SystemCalling Frequencies
