Furuno FS-5075 Operator's Manual page 30

3. DSC OVERVIEW
Contents of a DSC call
• Calling category
Call category
DISTRESS
GENERAL
• Station ID (MMSI)
Your ship ID and sending station ID. Coast station ID begins with 00; Group ID begins
with 0.
• Priority
Distress: Grave and imminent danger and request immediate assistance.
Urgency: A calling station has a very urgent call to transmit concerning safety of ship,
aircraft or other vehicle or safety of person.
Safety: A station is about to transmit a call containing an important navigational or
meteorological warning.
Routine: General calling
• Communication mode
TELEPHONE: Telephone (J3E) by SSB radiotelephone
NBDP-ARQ: Telex (J2B) mode ARQ via NBDP Terminal Unit
NBDP-FEC: Telex (J2B) mode FEC via NBDP Terminal Unit
DATA: Data communication by SSB (Routine individual only)
• Communication frequency
Working frequency used to call by telephone, NBDP or DATA. The sending station may
have the receiving frequency (ship or coast station) assign the frequency to use.
• Position
Position can be automatically or manually sent.
• DSC frequency
DSC frequency to use. If the call priority is SAFETY, URGENCY and DISTRESS,
select a DSC distress frequency.
• End code
The end of a DSC call is denoted by RQ (Acknowledgement required), BQ
(Acknowledgement) or EOS (no acknowledgement required).
3-2
DISTRESS ALERT, DISTRESS RELAY AREA, DISTRESS RELAY
INDIVIDUAL
MEDICAL MSG, NEUTRAL MSG, INDIVIDUAL MSG, PSTN MSG, TEST
MSG, GROUP MSG, AREA MSG, POSITION MSG, POLLING MSG
Call