Dsc Operation; Mmsid - M-tech MT-500 Owner's Handbook Manual

7. DSC OPERATION

The Digital Selective Calling (DSC) functions of your MT-500 transceiver add
convenience and safety to your VHF communication capability. DSC allows
you to contact other DSC equipped vessels and shore stations by selecting
their names from your personal call directory, choosing a call type, and press-
ing a key. In an emergency, pressing one button will send your vessel ID and
current position to search and rescue (SAR) authorities and other DSC
equipped vessels. Distress calls are covered first. Then, normal calling proce-
dures are described.
Position reporting requires connection to an operating GPS navigation re-
ceiver or manually entered Lat/Lon coordinates. If data from your GPS is
lost, 3 quick error beeps are sounded and the following warning screen ap-
pears in the display every 4 hours.
6 PRI. HI
INT
MEM CHANNEL
SET GPS
DATA NOW!
Set Manual Lat/Lon
This warning screen reminds you to manually enter Lat/Lon coordinates.
See the MANUAL LL item of the DATA SET topic of the 6.7 Main Menu Top-
ics. If Lat/Lon coordinates are entered manually but have not been updated
for 23.5 hours, the position fields are set to the repeated "9" and time field is
set to the repeated "8".

7.1 MMSID

SPECIAL NOTE
In order to use DSC functions, you must obtain a nine-digit maritime mobile
service identity (MMSI) and program it into your transceiver before you trans-
mit.
Prior to obtaining an MMSI, you will be asked to provide certain information
about your vessel and communication equipment. Contact the government
radio communication authorities of your country for licensing and MMSI
information. It is important that you obtain an MMSI, because National Coast
Guard authorities use this information to help speed search and rescue op-
erations.
The procedure for entering your MMSI is described in the MMSID SET topic
of the 6.7 Main Menu Topics.
34 MT-500
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