Humminbird VHF255SW Marine Radio User Manual


 
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10. Release the PTT key and listen for a response. If you do not get a response,
repeat step 9 until you do.
11. If you must abandon ship without receiving a response, and you have time, go
back to step 1, and initiate an automatic distress call that will broadcast the
ABANDONING message.
16. MAKING INDIVIDUAL ROUTINE CALLS
You can make an individual call, either to a ship or to a coast station.
To send an individual, manual call:
1. From the DSC Call Type List, select NEW CALL The New Call submenu will be
displayed, and the arrow will point to MANUAL.
2. Press the CH/ENTER knob again to display the ENTER MMSI screen. Enter the
MMSI number using the CH/ENTER knob; when MMSI entry is complete, press
the CH/ENTER knob to enter it.
3. Then rotate the CH/ENTER knob to select the working channel (the channel on
which you want to be called back) and press the CH/ENTER knob to enter it. The
working channel will show up in the Acknowledge message of the called radio.
4. The radio summarizes the call details and asks for confirmation to send the call
by displaying >SEND on the LCD. (You must confirm many of the DSC
commands before the radio will execute them.)
5. Press the CH/ENTER knob again to send the call. The radio goes to Channel 70
and the TX icon is displayed on the screen while the DSC call is being sent, then
the LCD displays an awaiting acknowledgment message. If you wish to cancel
the call, rotate the CH/ENTER knob until >CANCEL is highlighted, then press
the CH/ENTER knob again to cancel the call or press and release the 16/9 key.
6a. If the call is acknowledged, press PTT to talk.
or...
6b. If the call is not acknowledged within 16 seconds, the radio will prompt you to
resend the call.
7. 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.