Icom IC-M504 - Manual (Page 32)

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6
DSC OPERATION
i After receiving the acknowledgment, reply using the mi-
crophone.
➥ A distress alert contains (default);
• Nature of distress : Selected nature of the distress
• Position data
: GPS or manual input position data is held
for 23.5 hrs or until the power is turned
OFF.
➥ The distress call is repeated every 3.5–4.5 min., until re-
ceiving an ‘acknowledgement.’
➥ Push [CLR] to cancel the ‘Call repeat’ mode.
➥ “? ?? ?” may blink instead of position and time indications
when the GPS data is invalid, or has not been manually
updated after 4 hours.
■ Transmitting DSC calls
To ensure correct operation of the DSC function, please
make sure you set the squelch correctly. (p. 8)
D D Transmitting an individual call
The individual call function allows you to transmit a DSC sig-
nal to a specific ship only.
q Push [MENU] to enter the DSC menu.
w Rotate [DIAL] to select “I
In nd di iv vi id du ua al l C Ca al ll l,” push
[DIAL•ENTER].
• “P Po os si it ti io on n I In np pu ut t” item appears when a GPS receiver
(NMEA0183 ver. 2.0 or 3.01) is not connected.
--DSC Menu--
Select Item
Position Input
˘Individual Call
Group Call
All Ships Call
Position Request
Position Report
25W INT
TAG
Received
DistressACK
Beep Off>
CALLING