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Using Digital Selective Calling (DSC) Features
When the other station accepts the call, both radios switch to the se-•
lected response channel for voice transmission.
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.
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).
Open the menu and select the 1. DSC Call sub-menu.
Select 2. All Ships, and then choose whether this is an Urgency call or a
Safety call.
The radio asks you to conrm the call. Select 3. Send to continue with the
call or select Cancel to cancel the call.
The radio automatically switches to channel 70 to transmit the call 4.
request then automatically switches to channel 16, the designated
response channel for all-ships calling.
Press the 1.
MENU-PA button to display the menu.
Choose the 2. DSC Call sub-menu and select Group.
The radio prompts you to select a response channel. Use the 3.
CHANNEL
UP and CHANNEL DOWN buttons to scroll through the available channels.
When you reach the channel you want to use for a response, press the
SELECT button.
The radio asks you to conrm the call. Select 4. Send to continue with the
call or select Cancel to cancel the call.
The radio switches to channel 70 to transmit the call request then 5.
automatically switches to the selected response channel.
UM425 VHF OM.indd 31 28/9/11 11:55:17 AM