Glossary
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L
LGPL Lesser General Public License
M
MF Medium Frequency. Radio frequencies (RF) in the range of 300
kHz to 3 MHz. Navtex, which is part of the current Global
Maritime Distress Safety System occupies 518 kHz and 490 kHz
for important digital text broadcasts.
MMSI Maritime Mobile Service Identity. A series of nine digits which
are sent in digital form over a radio frequency channel in order
to uniquely identify ship stations, ship earth stations, coast
stations, coast earth stations, and group calls. These identities
are formed in such a way that the identity or part thereof can
be used by telephone and telex subscribers connected to the
general telecommunications network to call ships
automatically.
N
NAVTEX NAVigational TEleX. An international automated medium-
frequency direct-printing service for delivery of navigational
and meteorological warnings and forecasts, as well as urgent
marine safety information to ships.
P
PIN Personal Identification Number
T
TLX TeLeprinter eXchange - also called telex.
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