Icom M801E GMDSS Manual - Zanshin

9
WHEN RECEIVING A CALL
■ To receive a DSC call
The independent built-in DSC receiver circuit in the IC-
M801GMDSS scans all distress/safety frequencies,
therefore, the “distress,” “urgency” and “safety” calls on
those frequencies can be decoded at all times.
However, “routine” and “group” calls on the other frequencies
are received via the transceiver’s receiver
circuit. Therefore, the transceiver must set to DSC
watch mode by pushing [DSC] to decode these calls.
DWhen receiving a DSC call
One of the following actions should be performed
when a DSC call is received depending on the received
DSC format (or category):
•Wait for a voice transmission on the traffic frequency.
•Transmit an acknowledgement with DSC or voice.
DDisplay example and operation
•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 category.
************************
* Distress ACK *
* 001234567 *
************************
************************
* Distress RLY *
* 123456789 *
************************
************************
Exit Traffic
* Distress *
* 123456789 *
************************
************************
Exit Traffic
* Group *
* ICOM M801 *
************************
************************
Exit Traffic
************************
Geographical *
* Geographic 123456789 *
************************
123456789 *
************************
•Transmit an acknowledgement
When the following DSC is received, an acknowledgement
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 *
************************
************************
Exit Traffic
* Position REQ *
* ICOM M801 *
************************
************************
Exit ACK
* Polling REQ *
* 001234567 *
************************
Exit
ACK
✔ For your information
By rotating [CH], the received information can be read
(not all contents in some calling category) without entering
DSC memory screen as described in the next page.
≥
Exit
Traffic
≥
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