Humminbird VHF255SW manual DSC Call Types, Exit Quits the DSC Call Type menu mode

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DSC Call Types

LAST CALL: Recalls last call regardless of which type of call was received last.

NEW CALL: Allows you to make a new call, either by entering an MMSI number

or by selecting a number from the Contact List.

GROUP: Sends transmissions that are only received by radios that share a common group MMSI number; up to 3 group MMSI numbers can be stored and called.

ALL SHIPS: Make an Urgency, Safety, or Routine call to all DSC-enabled ships or ships within communication range. A re-confirmation screen will be displayed after you choose one of these three call types. You should send an All Ships call when assistance is needed but the situation is not serious enough for a Distress Call. An Urgency call is made when assistance is required but the situation is not life- threatening, while a Safety call is for an advisory alert.

CALL LOG: Allows a review of the last 20 stored calls by number and time of call. An individual call type can be placed to the selected MMSI/NAME in the LOG. The LOG maintains all received call types except DISTRESS calls. The earliest call is stored at the end of the list (20 maximum), and is automatically erased when a new call comes in.

DISTRESS LOG: Allows a review of the last 10 stored Distress calls by number and time of call. The earliest call is stored at the end of the list (10 maximum), and is automatically erased when a new call comes in.

POS REQUEST: Allows you to request GPS position information from any vessel for which an MMSI number is known; you can either pick the MMSI number of the vessel from the Contact List, which is a personal DSC directory of saved MMSIs, or by manual entry.

EXIT: Quits the DSC Call Type menu mode.

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Contents Operations Manual Thank YOU Operator Warnings Table of Contents ComSetup Menu Maintenance Troubleshooting VHF255S Introduction HOW VHF Radio WorksFeatures Overview Page Maritime Mobile Service Identity Mmsi To obtain an Mmsi assignmentGroup Mmsi VHF255S Controls Radio Base Station Front Page VHF255S Controls Radio Base Station Rear VHF255S Controls Microphone Handset Whats on the Display 10 11Indicates current channel selected Dot Matrix Indicates special conditions or radio functionsInstallation Overview Parts SuppliedRadio Base Station Watt VHF255S Fixed Mount radio base stationMicrophone Handset Microphone handsetCables Connections Overview Decide Where to Install the Radio Base Station Install the Radio Base Station Radio Base Station Mounting Screws Gimbal Knobs Bracket Dash Nuts Recessed mounting brackets Connected to the radio before powering up the radio Install the Microphone Mounting BracketAttach the Antenna Cable to the Radio Mount the microphone onto the bracket Attach a GPS Receiver OPTIONAL-PURCHASE Using Your VHF255S Before YOU USE Your Radio You will need to obtain an FCC license ifTo turn on the radio Selecting a Channel Adjusting SquelchTo select a channel Transmitting and Receiving Selecting HIGH/LOW PowerSelecting U.S./INTERNATIONAL/CANADIAN Bands Selecting a Weather Channel and Turning on Weather Alert ADDING/DELETING Channels TO/FROM Memory Accessing the 16/9 Priority ChannelsTo delete channels from memory Accessing Channels Saved to Memory Using the Transmit TIME-OUT Timer TOTTo access saved channels ScanningTo activate scan modes Using the Watch Monitor Modes Digital Selective Calling DSC To select a DSC call typeExit Quits the DSC Call Type menu mode DSC Call TypesTo make a Group call Group MmsiMaking a Distress Call Open the red cover over the Distress keyMayday Mayday Mayday Say that you will be monitoring ChannelMaking Individual Routine Calls Press the CH/ENTER key to initiate the call 4a. If the call is acknowledged, press PTT to talkTo receive a DSC call Receiving CallsTo receive a Distress call To receive a Distress Relay call To receive an All Ships callTo receive a Group call Call data is stored in the Call LogTo receive an Individual call To receive a Geographic Area callResetting the Radio Position IndicationDistress Setup Menu Contact List To delete an entry from the Contact List Backlight Adjustment LOCAL/DISTANTContrast Adjustment To adjust the ContrastGPS/TIME Submenu GPS/TIME Submenu Manually Enter GPS Data GPS/TIME Submenu Settings Submenu GPS/TIME Settings Submenu Position Display ON/OFFGPS/TIME Settings Submenu Time Display ON/OFF GPS/TIME Settings Submenu Time Offset Local TimeGPS/TIME Settings Submenu Time Format Radio Setup Submenu To display an existing channel name Radio Setup Channel Name Display and EditingTo edit an existing channel name entry Radio Setup Ring Volume Adjustment Radio Setup Beep Volume Adjustment Radio Setup Turning the Internal Speaker ON/OFFDSC Setup Submenu To access the DSC Setup SubmenuDSC Setup Enter Your User Mmsi Group Mmsi DSC Setup Create and Manage Group Mmsis To enter Group MMSIsTo edit an existing Group Mmsi entry To delete a Group MmsiDSC Setup Individual Reply DSC Setup DSC EnableDSC Setup Position Reply DSC Setup ResetTroubleshooting MaintenanceVHF255S Doesnt Power UP No Sound from the Speaker Transmitting is Impossible Or High Power CAN’T be SelectedLOW Receiver Sensitivity Year Limited Warranty Humminbird Service Policy Returning Your Unit for Service Transmitter SpecificationsReceiver Marine Channels UseMarine Channels 157.350 161.950 International Marine Channels MHz 156.125 160.725 Canadian Marine Channels Commercial Fishing Only Menu Tree These menu choices appear when you press the DSC/MENU keyDSC Call Type List Setup Menu WwwNOTES..reelschematic..com WwwNOTES..reelschematic..com WwwNOTES..reelschematic..com Contact Humminbird Monday Friday 800 a.m. to 430 p.m. Central Standard Time
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VHF255SW specifications

The Humminbird VHF255SW is an advanced VHF marine radio designed for reliability and performance on the water. It is built for recreational boaters, offering a combination of essential features and cutting-edge technologies that enhance communication and navigation safety.

One of the standout features of the VHF255SW is its robust 25-watt output power, which provides extended range communication, allowing users to reach distant vessels and shore stations effectively. This high power output is crucial in emergency situations or when out on open water, ensuring that skippers can maintain contact when it matters most.

The radio is equipped with a built-in Class D Digital Selective Calling (DSC) capability, which is designed to enhance safety. This feature allows users to send a distress signal automatically to the coast guard and other vessels within the vicinity, including their location coordinates. The DSC functionality can be a lifesaver in case of an emergency, providing peace of mind for boaters.

Another key characteristic of the VHF255SW is its large, high-contrast LCD display, which is easy to read even in bright sunlight or at night. The multi-color display features adjustable backlighting, ensuring users can navigate and communicate effectively in various lighting conditions. The intuitive user interface simplifies operation, making it accessible for even the most novice boater.

Additionally, the Humminbird VHF255SW is equipped with a built-in GPS receiver, which allows for enhanced positioning and mapping capabilities. This integration enables users to access real-time information, making navigation smoother and more efficient. The unit also supports navigating to specific waypoints and routes, making it an excellent tool for fishing and exploring new waters.

The radio is designed with a rugged, waterproof housing that meets IPX7 standards, meaning it can withstand submersion in water for short periods. This durability ensures that it operates reliably in rough marine conditions. The Humminbird VHF255SW also features a noise-canceling microphone for clearer communication, minimizing background noise during transmissions.

In summary, the Humminbird VHF255SW blends important marine communication capabilities with advanced technology. Its combination of high output power, DSC functionality, built-in GPS, and a user-friendly interface makes it an invaluable asset for any boating enthusiast, ensuring safety and confidence on the water. With its rugged design and reliability, the VHF255SW is a smart choice for those who demand quality and performance from their marine radio.
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