Humminbird VHF255SW manual Receiving Calls, To receive a DSC call, To receive a Distress call

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4b. If the call is not acknowledged within 16 seconds, the radio will prompt you to resend the call.

5.If you do nothing for 5 minutes, the individual call will be cancelled and the radio will revert to the original channel selected before you started the individual call.

NOTE: To save this Call Log entry in your Contact List, select SAVE, then press the CH/ENTER key and enter a screen name to represent how the logged MMSI is displayed on the LCD. Turn the CH/ENTER knob to find each character, then press the CH/ENTER knob to select each character.

17. RECEIVING CALLS

When you have an incoming call, the radio will ring to alert you to the call. If you miss a call, the blinking icon will appear on the LCD, and will remain until you read your missed message in the Call Log.

To acknowledge an individual incoming call:

The radio either automatically or manually sends an acknowledgement to the requesting radio, depending on its configuration settings, In the U.S. band, an acknowledgement will be sent to the requesting radio within 10 seconds of receiving the call.

To recall the most recent incoming call (last call):

1.From the DSC Call Type List, select LAST CALL. The details of the last call will be displayed.

2.Select the working channel for an individual call and press the CH/ENTER key. The radio will summarize the call details and ask for confirmation to send the call. Press the CH/ENTER knob again to send the call.

To receive a DSC call:

1.When a DSC call is received, the radio automatically responds based on the type of call. The information displayed on the LCD varies depending upon the call type. See Section 14, Digital Selective Calling, for a list of Call Types.

To receive a Distress call:

1.When a distress call is received, the radio automatically tunes to Channel 16, and the Distress alert tone sounds. The call data is stored in the Distress Log. Pressing any key disables the alert.

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Contents Operations Manual Thank YOU Operator Warnings Table of Contents Setup 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 functionsRadio Base Station Installation OverviewParts Supplied 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 To access saved channels Accessing Channels Saved to MemoryUsing the Transmit TIME-OUT Timer TOT 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 an Individual call To receive a Group callCall data is stored in the Call Log To receive a Geographic Area callPosition Indication Resetting the RadioTo acknowledge a missed call Distress 23’20.1234 N 100’15.1002 E 0810PM UTC Setup Menu To access the Setup Menu Contact ListTo 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 Page Page Page Contact Humminbird Monday Friday 800 a.m. to 430 p.m. Central Standard Time
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VHF255S, 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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