Cobra Electronics MRF45 owner manual VHF Marine Radio Procedures, Voice Calling

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VHF Marine Radio

Procedures

VHF Marine Radio Protocols

User Responsibility And Operating Locations

All users are responsible for observing domestic and foreign government regulations and are subject to severe penalties for violations. The VHF frequencies on your radio are reserved for marine use and require a special license to operate from land, including when your boat is on its trailer.

NOTE

This device complies with part 15 of the FCC Rules. Operation is

subject to the following two (2) conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation.

FCC Warnings: Replacement or substitution of transistors, regular diodes, or other parts of a unique nature, with parts other than those recommended by Cobra may cause a violation of the technical regulations of part 80 of the FCC Rules, or violation of type acceptance requirements of part 2 of the rules.

Voice Calling

VHF Marine Radio Protocols

Limits On Calling

You must not call the same station for more than 30 seconds at a time.

If you do not get a reply, wait at least two (2) minutes before calling again. After three (3) calling periods, wait at least 15 minutes before calling again.

Change Channels

After contacting another station on a calling channel, change immediately to a channel which is available for the type of message you want to send.

Station Identification

Identify, in English, your station by your FCC call sign, ship name, the state registration number, or other official number at both the beginning and end of each message.

Prohibited Communications

You MUST NOT transmit:

■

False distress or emergency messages.

■

Messages containing obscene, indecent, or profane words or meaning.

VHF Marine Radio Procedures

Maintain Your Watch

•

■ General calls, signals, or messages (messages not addressed to a particular

station) on Channel 16, except in an emergency or if you are testing your radio.

Whenever your boat is underway, the radio must be turned On and be tuned to Channel 16 except when being used for messages.

Power

Try one (1) watt first if the station being called is within a few miles. If there is no answer, switch to a higher power. This will conserve your battery and minimize interference to other users.

Calling Coast Stations

Call a coast station on its assigned channel. You may use Channel 16 when you do not know the assigned channel.

Calling Other Vessels

Call other vessels on Channel 16 or on Channel 9. (Channel 9 is preferred for recreational vessel use.) You may also call on ship-to-ship channels when you know that the vessel is listening on a ship-to-ship channel.

■ When you are on land.

Voice Calling

•

To Call Another Vessel Or A Shore Installation Such As A Lock Or Bridge Tender:

■Make sure your radio is On.

■Select Channel 16 and listen to make sure it is not being used.

NOTE

Channel 9 may be used by recreational vessels for general-purpose calling. This frequency should be used whenever possible to relieve congestion on Channel 16.

■When the channel is quiet, press the Talk button and call the ship you wish to call. (Hold the microphone a few inches from your face and speak directly into it in a normal tone of voice — clearly and distinctly.)Say “[name of station being called] THIS IS [your vessel’s name or call sign].”

■Once contact is made on the calling channel, you must switch to a proper working channel. See the channel listing on page 14 through 15.

 

 

 

 

6 English

Nothing Comes Close to a Cobra® 7

 

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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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