Raymarine Ray54 manual Digital Selective Calling DSC

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Chapter 5: Digital Selective Calling (DSC)	31

Chapter 5: Digital Selective Calling (DSC)

The Ray54 includes equipment for Class “D” Digital Selective Calling (DSC). DSC protocol is a globally applied system used to send and receive digital calls. DSC uses a unique Maritime Mobile Service Identity (MMSI) number to direct DSC calls directly to your radio, much like a telephone number. When the DSC signal is received, the radio quickly switches over to channel 70 and performs the corresponding operation.

Note: An MMSI number is required to operate the DSC equipment in this ra- dio. You can obtain an MMSI from BoatUS (www.boatus.com). Once ob- tained, you can program the MMSI number yourself one time only using the operation described in My MMSI ID on page 72. Otherwise, your Rayma- rine dealer can program or change the number for you.

The Ray54 includes a separate dedicated receiver just for DSC communications on channel 70. When a DSC call is received, the Ray54 automatically responds based on the type of call. When receiving a DSC call from another vessel or a coast station, an alert sounds and DSC data appears in the LCD–such as time of a call, the caller and the type and priority of a call.

The Ray54 can make the following type of DSC calls:

•INDIVIDUAL (routine) Calls are made to a specific station identified by its MMSI number. See page 34.

•GROUP (routine) Calls send transmissions that are only received by radios that share a common Group MMSI number. See page 38.

•ALL SHIPS Calls send out a message to all vessels within range. See page 42. The Ray54 can make two different types of All Ships calls:

1.SAFETY Calls for advisory alerts —or—

2.URGENCY when the assistance is required but the situation is not serious enough for a Distress Call

•DISTRESS Calls send your vessel’s position and time information to other ships and shore stations, along with (optionally) the nature of your Distress situation. See page 45.

•POSITION REQUEST calls enable you to request GPS position infor- mation from any station for which an MMSI number is known. You can also send out your position to others.

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Contents Ray54 Page About this Handbook WarrantyIntroduction Conventions UsedFCC Notice Important InformationStation License Operator LicenseIndustry Canada Maritime Mobile Service Identity MmsiEMC Conformance Antenna Mounting and EME ExposureSafe Compass Distance Contents CLEAR/WX Distress Digital Selective Calling DSC How to Contact Raymarine Ray54 Fixed Station VHF Radio FeaturesIntroduction Digital Selective Calling DSC Equipment Supplied InstallationUnpacking and Inspection Flush Mounting Planning the InstallationTypical Mounting Methods Typical Mounting Methods Wiring Connections Power ConnectionsGPS/NMEA Data External Speaker ConnectionsGrounding Antenna Mounting and EME Exposure Antenna ConnectionsAntenna Mounting Suggestions Keypad and Rotary Knobs Getting StartedMain Unit Push Keys Microphone KeysMain Unit Rotary Keys Main Unit MicrophonePTT 16/9CALL/MENU HILO/USER 12 /9 LCD DisplayLocal Local/Distant Mode HI/LO TX PowerBattery Low User Favorite Channel ModeAlert Weather Alert WX Weather ChannelI C Channel Set Simplex ChannelSetting the Volume Turning the Power on and OFFSetting the Squelch Setting the Power OutputOverriding the Low Output Power Restriction Selecting a Weather Channel Setting the ChannelOn the microphone On the main unitWeather Alert Operation Selecting the Priority ChannelSelecting the Secondary Priority Channel Reprograming the Secondary Priority Channel Transmitting Using the Scan ModesSaved Memory Scan All ScanPriority All Scan Priority Saved Scan Adding Channels to MemoryGeneral Operations Dual Watch Using the Monitor ModesTri Watch DSC Call Operation User Channel ModeMenu Mode Operation Digital Selective Calling DSC Individual DSC Call FunctionGroup ALL ShipsRX Call LOG PositionRequest Transmitting an Individual Call Individual CallsMaking DSC Calls to Coast Stations If using Manual Mmsi ID entry Ray54 VHF Radio Receiving Individual Calls To cancel the mode without sending ACKTransmitting a Group Call Group CallsDigital Selective Calling DSC Receiving Group Calls To ignore the Group Call Transmitting an All Ships Call All Ships CallsReceiving an All Ships Call To decline the All Ships Call Sending a Distress Call Distress CallsDesignated Distress Call Undesignated Quick Distress CallTo cancel the automatic Distress resend press CLEAR/WX Receiving a Distress Call Cancelling a Distress Call Made in ErrorReceiving a Distress Relay Sent by Another Station Receiving a Distress ACK Sent from a Coast StationSpecifying the Target Vessel Position RequestIf using Manual Mmsi ID entry Retrieving the Last Received Position Data When no reply is received within 3 minutesReceiving a Position Request From Another Station Call LogMaking a Call from a Call Log Entry Press and hold the SCAN/SAVE key Saving an Mmsi ID Number from a Call Log EntryDSC Distress Log Menu Function Menu SettingsUsing the Microphone Keys to Make Selections Adding an Entry DSC PhonebookUse same procedure to enter the Mmsi characters Editing an Existing Entry Deleting an Existing Entry Local / Distant Backlight AdjustmentContrast Adjustment When GPS Information Not Available GPS/Time SetupRotate the CH knob to scroll through the selections Settings Menu Settings Time Display Latitude/Longitude DisplayTime Offset Time FormatBand Radio SetupKey Beep Ring VolumeChannel CH Name DSC Setup My Mmsi ID Group Mmsi Setup Group Name Menu Settings Editing an Existing Entry Position Reply Automatic Channel Changing for Incoming Calls Procedure When Disabled Procedure When EnabledResetting Factory Defaults How to Contact Raymarine Customer ServiceProduct Repair and Service On the InternetTechnical Support Accessories and PartsPLL Appendix a SpecificationsGeneral Transmitter ReceiverXmit RCV Appendix B Channel ListMarine VHF Channels and Frequencies 86Ray54 VHF Radio Freq Use 82A WC, EC Canadian Marine VHF Channels and FrequenciesAC, GL PC, AC, GLAC, GL, PC 156.750 All areas90Ray54 VHF Radio 156.875 EC, PCAC, GL, NL Area of OperationInternational Marine VHF Channels & Frequencies 94Ray54 VHF Radio 161.925 WX Channels North America only Appendix C Glossary VHF VOLNumerics IndexMmsi 101 102