Icom IC-M504 instruction manual Transmitting DSC calls, Transmitting an individual call

6 DSC OPERATION

iAfter receiving the acknowledgment, reply using the mi- crophone.

25W INT

TAG

Received

DistressACK

<Osaka Bay

<CLR˘

Beep Off> CALLING

➥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)

DTransmitting an individual call

The individual call function allows you to transmit a DSC sig- nal to a specific ship only.

qPush [MENU] to enter the DSC menu.

wRotate [DIAL] to select “Individual Call,” push [DIAL•ENTER].

•“Position Input” 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

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