Inmarsat-C Ship Earth Station (SC-25)

INMARSAT-C SES is small, lightweight terminal designed for two-way message communication. INMARSAT-C SES cannot be used for radiotelephone communication; It operates at 600 bit/s and provide access to the international telex/telex networks, electronic mail services and computer databases.

Frequencyrange-Transmission:1626.5 ? 1646.5
- Reception :1530.0 ? 1545.0 MHz
Modulation : BPSK
Data rate -Transmission : 300 bps (1st) / 600 bps (2nd)
- Reception : 600 bps
Channel : 5 KHz steps
Antenna : Omni-directional
Axial ratio : 6 dB or less
Environmental condition :
- Tempurature, Antenna / RF unit :- 35?? + 55?
- Data commuication equipment : 0?? +35?
- Relative humidity, 95% or less at 40?
- Wind load, 50 m/sec (100knots) of relative average speed
- Vibrarion resistance, INMARSAT technical requirements
Power supply : AC 110V / 200V, DC 24V
NAV interface : NMEA0183/ 0182