User Guide

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29
WHEN RECEIVING A CALL
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8
2001 NEW
■ To receive a DSC call
The independent built-in DSC receiver circuit in the IC-
M801E scans all distress/safety frequencies, therefore,
the “distress,” “urgency” and “safety” calls on those fre-
quencies can be decoded at all times.
However, “routine” and “group” calls on the other fre-
quencies are received via the transceiver’s receiver
circuit. Therefore, the transceiver must set to DSC
watch mode by pushing [DSC] to decode these calls.
• Monitoring the traffic frequency
Monitor the communication between the calling ship
and a coast station, or the calling station transmission
via voice on the traffic frequency.
•Emergency alarm sounds until pushing some key, or
beeps sound, depending on the calling format or cat-
egory.
• Transmit an acknowledgement
When the following DSC is received, an acknowl-
edgement must be sent back to the calling station.
•Beeps, or an emergency alarm sounds until pushing
some key, depending on the category.
************************
*
Individual *
*
ICOM M801 *
************************
TrafficExit
************************
*
Distress RLY *
*
123456789 *
************************
TrafficExit
************************
*
Distress *
*
123456789 *
************************
TrafficExit
************************
*
Group *
*
ICOM M802 *
************************
TrafficExit
************************
*
Geographic *
*
123456789 *
************************
TrafficExit
************************
*
Geographic *
*
123456789 *
************************
TrafficExit
DD
When receiving a DSC call
One of the following actions should be performed
when a DSC call is received depending on the re-
ceived DSC format (or category):
• Wait for a voice transmission on the traffic frequency.
• Transmit an acknowledgement with DSC or voice.
DD
Display example and operation
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