– 6 – – 7 –
Cospas-Sarsat cooperates with the International Civil Aviation
Organization (ICAO), International Maritime Organization
(IMO), International Telecommunication Union (ITU), and
other international organizations to ensure that Cospas-Sarsat
distress alert services are compatible with the international
community’s needs, standards, and recommendations.
3.2 406 MHz Frequency
The Emergency transmitter watch broadcasts a digital
signal on the 406 MHz frequency, lasting 0.44 second every
50 seconds. The signal consists of a hexadecimal code,
which, among other data, includes the code for the country
in which the beacon was registered and the beacon’s serial
number.
For more information about Cospas-Sarsat, visit its website
at www.cospas-sarsat.org.
3.3 121.5 MHz Frequency
The Emergency transmitter watch broadcasts a second analog
signal with amplitude modulation on the 121.5 MHz frequency,
lasting 0.75 second every 2.25 seconds.
Local User Terminal
Mission Control Center
Rescue Coordination Center
GEOSAR
LEOSAR
E
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