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.

E-20

Uniden MHS135DSC Radio Owner’s Manual

Page 23 Page 25
Page 24
Image 24
Uniden MHS135DSC owner manual Making an automatic distress call, Calling a particular group of stations Group Call
Page 23 Page 25

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.
Top Page Image Contents