Sailor System 5000 MF/HF User Manual page 32

A working channel shall be proposed when calling another ship.
Insert the working
frequencies in the call
Selects telephony display for
change of working frequencies
Normally 2177 kHz is used for intership DSC calls. In addition user programmed DSC
frequencies may be selected. If DSC frequencies were selected from the Telephony display
prior to the call these are default. Distress frequencies cannot be selected in any way.
Transmission of a DSC call on MF/HF takes approx. 8 seconds. The called ship is supposed
to answer the call within 4½ minutes by sending a DSC Acknowledgement containing
information on working frequencies for the subsequent traffic. When acknowledgement is
received lift the handset to set the radio to the working frequencies.
If no acknowledgement is received within 5 minutes, the equipment returns to the previous
telephony display and starts scanning if selected.
24
Starts transmission
of the call
Select the DSC
frequency
Steps between DSC frequencies
Displays the contents of
the acknowledgement
Sets mode and
frequency as indicated in
the acknowledgement
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