Humminbird VHF255SW Two-Way Radio User Manual


 
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To make an All Ships call:
1. From the DSC Call Type List, select ALL SHIPS. The following choices will be
displayed: Urgency, Safety, and Routine.
2. Select one of those three choices to see another submenu that gives you the
choice to Send or Cancel the All Ships call type. Press the CH/Enter knob again
to send the call type selected, or press the 16/9 key to quit.
3. Once the call is sent, the text area of the LCD will momentarily show the Calling
All Ships message. The radio will then return to normal VHF operation on
Channel 16 with high power, except ROUTINE. Press PTT to talk.
T
o make a Group call:
This feature allows you to contact a group of specific vessels using DSC and to switch
to a desired channel automatically. Before sending a GROUP call, you must set the
GROUP MMSI.
1. From the DSC Call Type List, select GROUP. The names of your groups will
be displayed.
2. Select the group that you want to call, then select the channel Press the
CH/ENTER knob to send the group call. Once the call is sent, the Text area of
the LCD will momentarily show the Calling group message.
3. Once the group call is sent, the radio will return to normal VHF with the
designated channel. Press PTT to talk.