Glossary Of Terms - JRC JSS-2150 Instruction Manual

This section defines general and DSC terms related to this equipment.
● General terms
DSC
Digital Selective Calling device
Used in routine calls, safety and urgency
calls, and distress calls for rescue requests.
GMDSS
Global Maritime Distress and Safety System.
GPS
Global Positioning system
IMO
International Maritime Organization
ITU
International Telecommunication Union
Establishes conventions and regulations for
all electrical wired and radio, land, sea, air,
and space communications. It contains
internal organizations such as ITU-R and
ITU-T.
ITU-R
The International Telecommunications Union
(ITU) radio communications department.
LT
Local time
MMSI
Maritime Mobile Service Identity
The 9-digit Maritime Mobile Service Identity
number assigned to each ship and coast
station.
NMEA
Maritime equipment transmission standard
established by
Electronics Association.
PTT
Push to talk
RCC
Rescue Co-ordinate Center

Glossary of terms

the National Marine
RMS
Remote Maintenance System
Transmits ship
temporarily stored in the VDR via Inmarsat to
land, for use
management of radio equipment.
RR
Radio Regulations
International regulations for radio transmission
established by the treaty of the ITU.
SOLAS Convention
International Convention for Safety of Life at
Sea
The international convention applies to all
ships engaged on international voyages. A
safety certificate is issued if the conditions of
this convention are satisfied.
SQL (Squelch)
A function that acts to suppress the audio
output of a receiver in the absence of a radio
signal of sufficient strength.
UTC
Universal Time Coordinated
MF/HF
Medium frequencies and high frequencies
(300 kHz to 30 MHz)
VOL (Volume)
Speaker volume
WRC
World Radiocommunication Conference
WKR
Watch Keeping Receiver
The WKR is the receiver dedicated to
monitoring the
frequencies.
equipment information
in maintenance and
distress and safety
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