The present document provides specifications for the standardization of transmit/receive Maritime Mobile Earth
Stations (MMES) operating in the 1,5 GHz and 1,6 GHz bands under the Global Maritime Distress and Safety Systems
(GMDSS) in order to ensure general safety and limit interference to radio communication systems.
NOTE: The present document is for MMES equipment that meets the requirements of IMO A.808(19) [6] based
systems only.
The present document applies to MMES radio equipment, which have the following characteristics:
the MMES is ship mounted;
these MMES are controlled and monitored by a Network Control Facility (NCF). The NCF is outside the
scope of the present document;
the MMES operates through geostationary satellites as part of a network providing voice, direct printing and
data communications;
the MMES is capable of operating within the frequency ranges given in table 1.