Cobra Electronics MRF45 owner manual DSC Operation, Sending Distress Calls

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DSC Operation

Operating Your Radio

DSC Operation

•

Sending DSC calls is done from menus similar to the Settings menu. Whereas entering the Settings menu required a press and hold of the Call/Set button, the sending menus appear with a press of the Distress button.

All received DSC calls will sound one (1) or another of the alarms to alert you to them. See pages 34 through 35 for descriptions of the different alarms. Pressing any button will turn Off the alarm while maintaining the received call information on the LCD.

Sending Distress Calls

The ability to send and receive Distress calls and their acknowledgements on Channel 70 can literally be a lifesaver for you or another mariner.

NOTE

The DSC call will:

■Sound the distress alarm at all receiving stations.

■Inform receiving stations of your identity (MMSI).

■Inform receiving stations of your position if you have a GPS device connected or you have manually entered your position.

It will not provide the receiving stations with other distress information such as the nature of your problem, number of persons aboard, injuries, or the like. For that, you will have to communicate by voice on Channel 16 with the station that acknowledges your DSC distress call.

Operating Your Radio

Distress Button

Manual

Position Entry Screen

Exit

Transmit USA High

DSC Operation

2.Choose one (1) of the following:

To Send An Automatic Distress Call: Press and hold the Distress button.

To Send A Manual Distress Call:

1.Use the Up/Down buttons to move the arrow to MANUAL.

2.Press the Call/Set button to go to the position entry screen.

3.Use the Up/Down buttons to manually set the position of your vessel.

4.Press the Call/Set button to send the message.

5.Press and hold the Distress button.

To Abort The Distress Call Process:

If you pressed the Distress button by mistake or if you have not received an acknowledgement and want to discontinue the automatic resending of your distress message:

1.Use the Up/Down buttons to move the arrow to EXIT.

2.Press the Call/Set button to return to Standby mode.

The distress alarm will sound to let you know that the

Distress Button

Send/Manual/Exit

To Begin Sending A DSC Distress Call:

1.From Standby mode, lift the spring-loaded red door on the transceiver and press the Distress button under it. This will open the Distress menu with the arrow pointing to SEND. You will have three (3) choices:

■Send the distress call automatically with either no position information if a GPS is not connected or with the position provided by a connected GPS.

■Manually enter your position, then send the distress call.

■Abort the distress call process and return to Standby mode.

Distress Waiting

Distress Acknowledgement

message is being sent. At the end of the transmission, the radio will maintain a watch on Channels 16 and Channel 70 for an acknowledgement. Press any button to turn Off the alarm and return to Standby mode.

If an acknowledgement is received, the distress alarm will sound again and the responding party’s MMSI number will show on the LCD.

If no acknowledgement is received, the radio will resend the message at approximately four (4) minute intervals until an acknowledgement is received or you abort the distress call.

54 English

Nothing Comes Close to a Cobra® 55

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Contents Our Thanks ToYou Customer Assistance For Assistance In The U.S.AFor Assistance Outside The U.S.A Microphone Product Features Product FeaturesMicrophone With Auxiliary Controls Table Of Contents Safety Training Information Important Safety InformationImportant Safety Information Always use only Cobra authorized accessoriesFCC Licensing Information Recommendations For Marine CommunicationVoice Calling VHF Marine Radio ProceduresVHF Marine Radio Procedures Maintain Your Watch Voice CallingDigital Selective Calling DSC Maritime Mobile Service Identity MmsiMaritime Mobile Service Identity Mmsi Digital Selective Calling DSCRadiotelephone Calls Emergency Messages Distress ProcedureEmergency Messages And Distress Procedure Radiotelephone CallsTell where you are Marine Distress ProcedureMarine Distress Procedure DSC SayVHF Marine Channel Assignments VHF Marine Channel Assignments156.800 156.850 International Distress, Safety and Calling156.700 Rx Only 156.750 03A Government Only20A Port Operations Port Operations, Ship Movement 21A U.S. Government Only Canada Coast Guard Only23A Government Only 64A U.S. Government Only Canada Commercial Fishing Digital Selective Calling Voice communications not allowed81A U.S. Government Only Environmental Protection Operations World City Time Zones World City Time ZonesNoaa Weather Channels Alert Noaa Weather Channels And AlertIncluded In This Package Mounting Powering The RadioMounting And Powering The Radio Included In This PackageElectrical Power Connection Microphone BracketFlush Mount Kit Not Included Radio Operator Requirements Installation RequirementsAntenna Requirements And Attachment Safe Maximum Permissible Exposure MPE RadiusGlobal Positioning System GPS Device Not Included External Devices ConnectionsExternal Devices And Connections Microphone AttachmentGetting Started Tones And AlarmsPower On-Off Getting StartedVolume Standby And ReceiveSquelch LCD Backlight Set-Up Routines Settings MenuSet-Up Routines LCD ContrastTo Set Your Radio For The Area In Which You Will Be Using It A./International/Canada Channel MapsVoice Transmission Transmit Power OutputVoice Transmission ChannelsNoaa All Hazards/Weather Radio And Alert Weather Radio And AlertAdvanced Operation Advanced OperationDual-Watch ScanUser Mmsi Number DSC Set-UpDSC Set-Up If You Incorrectly Enter Your Mmsi NumberIfYou TransferYourRadioTo a DifferentVessel Group Mmsi NumberDSC Scanning To Set The Position Request Reply Type Position Request Reply TypeIndividual Directory To Enter Or Edit Names And Mmsi Numbers In The DirectoryDSC Operation DSC OperationSending Distress Calls Regarding Distress Relay Calls Receiving Distress CallsSending An All Ships Calls Receiving Distress Relay CallsSending a Geographical Call Receiving An All Ships CallSending An Individual Call Receiving a Geographical CallSending a Group Call Receiving An Individual CallReceiving a Group Call Sending a Position RequestIf The Station You Called Cannot Send Its Position To Exit The Position Request ModeIf You Receive a Position If The Station You Called Chose Not To ReplyReceiving a Position Request Sending a Position SendReceiving a Position Send Maintenance Maintenance TroubleshootingSpecifications TroubleshootingProduct Service Accessories Order Info Optional Accessories
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