Operation Manual

19
4. DSC Operation
This chapter shows you how to set up and send DSC
calls. For each type of call the display shows the
message “XXX call in progress” (XXX = name of call)
while the call is being sent. If, when preparing a DSC
call, no data is entered for five seconds, the equipment
reverts to standby.
4.1 Distress Call
Do the following when a life endangering situation
arises on your vessel:
1. Press the [POWER] switch in the hanger to turn on
the unit if it is not already on.
2. Hook off the handset.
3. Open the DISTRESS button lid and press the
[DISTRESS] button over four seconds. The
equipment sets up as follows:
a) Alert sounds.
b) Distress LED flashes.
c) Speaker is turned on.
d) CH70 is selected.
e) High power (25 W) is selected.
Continue pressing the button until the display looks
something like the sequence in right column.
Distress
button
pressed!!
Nature:
UNDESIGNATED
KEEP PRESSED
FOR 3SEC.
Distress call
in progress
Nature:
UNDESIGNATED
Position:12:34
12.34.E123.45N
After 3 seconds
(Example of transmitting display)
The equipment then sets up as follows:
f) The display shows type of call (distress), nature of
distress, your position in latitude and longitude and
time.
g) All keys are not operative.
4. After the distress call is transmitted the alert sound
stops, CH70 and high power are selected. The
display then shows the message “Waiting for
acknowledge,” meaning your station is awaiting
acknowledgement of your distress call from a coast
station. The time to wait is randomly set, from 3.5 to
4.5 minutes.