Icom iM304 - Manual (Page 22)

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6
DSC OPERATION
■ Distress call
A Distress call should be transmitted if, in the opinion of the
Master, the ship or a person is in distress and requires imme-
diate assistance.
NEVER USE THE DISTRESS CALL WHEN YOUR
SHIP OR A PERSON IS NOT IN AN EMERGENCY.
A DISTRESS CALL CAN BE USED ONLY WHEN
IMMEDIATE HELP IS NEEDED.
q Confirm no Distress call is being received.
w While opening the key cover, push [DISTRESS] for 5 sec.
to transmit the Distress call.
• Emergency channel (Channel 70) is automatically selected and
the Distress call is transmitted.
e After transmitting the call, the transceiver waits for an ac-
knowledgment call on Channel 70.
• The Distress call is automatically transmitted every 3.5 to 4.5
minutes.
• “ ” scrolls at the channel comment indicator.
r After receiving the acknowledgment, reply using the mi-
crophone.
• “ ” scrolls at the channel comment indicator.
➥ A distress alert contains;
• Kinds of distress : Undesignated distress
• Position data
: GPS position data held for 23.5 hrs. or until
the power is turned OFF.
➥ The Distress call is repeated every 3.5–4.5 min., until
receiving an ‘acknowledgement.’
➥ Push and hold [DISTRESS] for 5 sec. to transmit a re-
newed Distress call, if desired.
➥ Push any key except [DISTRESS] to cancel the ‘Call
repeat’ mode.
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