Specifications

MT-550 55
DSC Call Types: See chart below:
Format Specifier Category First Telecommand
Symbol number
RX TX
Distress - (112) F3E/G3E Simplex - (100) X X
All Ship’s - (116) Distress - (112) Distress ACK - (110) X
All Ship’s - (116) Distress - (112) Distress RELAY - (112) X
All Ship’s - (116) Urgency - (110) F3E/G3E Simplex - (100) X X
All Ship’s - (116) Safety - (108) F3E/G3E Simplex - (100) X X
Individual - (120) Urgency - (110) F3E/G3E Simplex - (100) X
Individual - (120) Safety - (108) F3E/G3E Simplex - (100) X
Individual - (120) Routine - (100) F3E/G3E Simplex - (100) X X
Individual - (120) Routine - (100) Ship Position - (121) X X
Group - (114) Routine - (100) F3E/G3E Simplex - (100) X X
2
nd
Telecommand
Transmit & Receive (126) - No Information.
DSC Distress Key: Red & Covered. Plastic Cover is hinged to
prevent loss. Key is backlighted full time. Hold
down 3 seconds-countdown timer is displayed.
DSC Call Log: 32 Entries. Instant call back any Log Entry with
Individual Routine call.
Caller’s Name is displayed if MMSID matches to
Directory Entry.
DSC Directory: 32 Entry list with scrolling and Auto Sorting.
Entries can be edited to Line/Character
position.
MMSID: Own Ship’s & Group are stored in nonvolatile
memory.
Memory Scan Channels: Unlimited with instant editing and can be
cleared on Power-up. The Memory Channel list
is presented in a Page Mode format with instant
ADD/DELETE function.
Alarm Tones: 3 different tone sequences are provided.
Frequency Control Method: Phased Locked Loop (PLL).
Frequency Stability: +/-5 PPM for both the Transmitter/Receiver.
GPS/NMEA: $GPGLL/GGA/RMC/GNS sentence is decoded.
NMEA Checksum can be turned Off/On.
GPS Display: Data is selected from following:
• Date & local time & LL Position (3 digit for
seconds).
• SOG/COG& LL Position (3 digit for
seconds).
• Time & Manual LL Position (2 digit for
seconds).
• No Data.