Humminbird VHF255SW Marine Radio User Manual


 
44
To send an individual call using an MMSI stored in the Contact List:
1. From the DSC Call Type List, select NEW CALL. The NEW CALL submenu will be
displayed, and the cursor will point to MANUAL; any MMSI names stored in your
Contact List will also appear. If you have no names stored in your Contact List, you
will not be able to proceed. (See Setup Menu, Contact List for more information.)
2. Rotate the CH/ENTER knob select the MMSI number of the person from the
Contact List that you want to call, then press the CH/ENTER knob again to
initiate the call.
3. Then rotate the CH/ENTER knob to select the desired reply channel and press
the CH/ENTER knob to enter it. The radio goes to CH 70 and the TX icon is
displayed on the screen while the DSC call is being sent, then LCD displays an
awaiting acknowledgment message.
4a. If the call is acknowledged, press PTT to talk.
or...
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.
Sending an individual call using the Call Log:
The Call Log contains the contact details for the 20 most recent incoming calls, so that
you can call any of them again quickly.
1. Press the DSC/MENU key to enter DSC mode, select CALL LOG, press the Up or
Down Channel keys on the microphone handset or the CH/ENTER knob on the
radio base station to scroll for previous calls. The END OF LOG message will
indicate the end of the Call Log list.
2. Press the CH/ENTER key to initiate the call.
3. Then rotate the CH/ENTER knob to select the desired reply channel and press
the CH/ENTER knob to enter it. The radio goes to CH 70 and the TX icon is
displayed on the screen while the DSC call is being sent, then LCD displays an
awaiting acknowledgment message.
4a. If the call is acknowledged, press PTT to talk.
or...