Uniden MHS135DSC Making an automatic distress call, Calling all stations All-Ships Call

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6.The radio automatically switches to channel 70 to transmit the call request.

xx When the other station accepts the call, both radios switch to the selected response channel for voice transmission.

xx If the other station cannot respond on the channel you selected, the radio displays Not support CH.

Calling a particular group of stations (Group Call)

Group calling calls all the stations that share your group MMSI. You must have a group MMSI programmed into the radio to make a group call, and the stations (boats) you are calling must have this same group MMSI programmed into their radios.

1.Press and hold MENU/CALL to display the Call menu.

2.Select Group.

3.The radio prompts you to select a response channel. Use CHANNEL UP and CHANNEL DOWN to scroll through the available channels. When you reach the channel you want to use for a response, press ENTER-H/M/L.

4.The radio asks you to confirm the call. Select Send (press ENTER-H/M/L) to continue with the call or select Exit (press CLR/SCAN) to cancel the call.

5.The radio switches to channel 70 to transmit the call request then automatically switches to the designated response channel.

Calling all stations (All-Ships Call)

All ships calling contacts all DSC radios within range of your boat. You should only use all ships calling in the event of a Safety warning (such as debris in the water) or to request assistance in an Urgency (any situation where your vessel has a serious problem but is not yet in distress).

1.Open the Call menu.

2.Select All Ships, and then choose whether this is an Urgency call or a Safety call.

3.The radio asks you to confirm the call. Select Send (press ENTER-H/M/L)to continue with the call or select Exit (press CLR/SCAN) to cancel the call.

4.The radio automatically switches to channel 70 to transmit the call request then automatically switches to channel 16, the designated response channel for all- ships calling.

Making an automatic distress call

If you have programmed your MMSI number, your radio can transmit an automated distress call with your current location and nature of the distress. The radio then monitors channel 16 for a response and repeats the distress call every few minutes until it receives an acknowledgement.

To send an automatic distress call, press and hold DISTRESS for three seconds. If no MMSI number has been programmed, the radio prompts you to enter your MMSI number.

If you want to include the nature of your distress in the distress call, use the following distress procedure:

1.Press DISTRESS.

2.The radio displays the list of distress conditions; use CHANNEL UP and CHANNEL DOWN to choose the nature of your distress, then press and hold DISTRESS for three seconds.

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Uniden MHS135DSC Radio Owner’s Manual

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Contents MHS135DSC Making a Distress Call Faire UN Appel DE Détresse Table of Contents Features IntroductionGetting Started What’s includedParts of the MHS135DSC Front viewBack view Button Press to Press and hold toCharger Reading the displayDisplay icons and what they mean Icon What it meansHow It Works Normal MenuMenu Option What it does Mode What it does Use it when you want to To turn it on/off Operation ModesCall Menu Watch mode What it does To turn it on/off NormalMonitoring Channel Scan With DSC Watch onMemory Channel Scan WX Alert Watch on wxWeather Triple 16 09 Watch onTriple WX Alert Watch on 08 10 11 12 13 14 15 17 20 24Setting Up the Hardware Installing the BatteryUsing Alkaline Batteries Attaching the AntennaSetting Up Your Radio Charging the BatteryImportant notes on charging the battery Mounting the ChargerSetting It Up Entering the User MmsiOperating the Radio Digital Selective Calling Features What is DSC?Making a Transmission Changing the transmission levelAdvanced DSC features Feature Menu Item FunctionMmsi Numbers Entering Mmsi numbersEntering Your User Mmsi Number Entering a group Mmsi numberUsing the Directory Entering an individual Mmsi numberCall type What it does When to use it Making DSC CallsTo the DSC Directory Edit screen Calling a single station Individual Call All ships callSelect Individual Making an automatic distress call Calling a particular group of stations Group CallCalling all stations All-Ships Call Canceling an automatic distress call Receiving a DSC callReceive log Select Receive LogTest Calls Returning a call from the Receive LogMaking Test Calls Test DSC Call Type Receive Log InformationReceiving Test Call Setup Select DSC Setup and then Test ReplyPosition Request and Reply Acknowledging Test Call ReceiptEnabling Automatic Position Reply POS RequestPutting the radio into standby Position ReplyPosition Send GPS Features Disabling automatic channel switchingSelect DCS Setup, then Auto CH SW GPS Operation OverviewGPS Setup Menu Nmea Features Using the FlashlightMaintenance and Troubleshooting Renaming ChannelsSpecifications Problem Things to TryCommon Questions GeneralChannels and Frequencies MHz US channel frequencies and namesRX Freq TX Freq Status Name Canadian channel frequencies and names Canadian Marine ChannelsRX Freq TX Freq Status International channel frequencies and names RX Freq TX Freq Status Name on displayDSC Regulations and Safety Warnings Maritime Radio Services OperationWeather channel frequencies and names ChannelFCC RF Exposure Information Three Year Limited Warranty

MHS135DSC specifications

The Uniden MHS135DSC is a highly regarded handheld marine radio designed for boating enthusiasts and professionals alike. This device combines advanced technology with user-friendly features, making it an essential tool for effective communication on the water.

One of the standout features of the MHS135DSC is its Digital Selective Calling (DSC) capability, which enhances safety by allowing boaters to send automated distress signals. This feature significantly improves the speed of communication in emergencies, sending distress alerts that include the boat's GPS location to nearby vessels and coast guard stations. The MHS135DSC also supports Class D DSC, which means it can prioritize emergency calls over regular communication.

The radio is built to withstand the rigors of marine environments, featuring an IPX8 waterproof rating, making it submersible in water up to 1.5 meters for 30 minutes. This robust design ensures that the radio remains operational even in adverse weather conditions, providing peace of mind to users.

Another notable characteristic of the MHS135DSC is its built-in GPS receiver. This feature allows users to easily access their location and navigate more effectively. The unit can display real-time coordinates, and it integrates seamlessly with other marine navigation systems. The internal GPS also facilitates DSC operations, ensuring that crucial location data is sent during distress calls.

The MHS135DSC operates on both the VHF marine radio band and supports a wide range of channels for effective communication. With 1W/5W power settings, users can adjust transmission strength according to their communication needs, whether they are in close proximity to other vessels or need to reach distant stations.

A user-friendly interface is an additional asset of this radio. The clearly labeled buttons and intuitive design make it easy to operate, even for those new to marine electronics. The radio also features a bright LCD display for clear visibility even under direct sunlight.

Battery life is another critical aspect, and the MHS135DSC excels in this area with a rechargeable lithium-ion battery that provides long-lasting power. The device also supports battery save modes, ensuring that the radio remains functional during extended outings.

In summary, the Uniden MHS135DSC is a feature-rich handheld marine radio that prioritizes safety, usability, and durability. With its DSC capabilities, waterproof design, built-in GPS, and robust battery life, it serves as an essential communication tool for anyone navigating the waters, ensuring connectivity and peace of mind.
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