VHF Coastal Station


VHF Coast station model MSТ-1124
MST-1124 is an all-in-one marine VHF coast station with built-in DSC modem  supporting narrowband FM/PM mode (with channel spacing of 25 kHz or 12,5 kHz) designed to comply with the GMDSS requirements for safety and general communications.
MST-1124 has a form factor that enables installation into a standard four-unit rack-mountable module named MSU-1124. Each MSU-1124 can contain up to 4 radios.





Main features of VHF coast station
  • VHF coast station Full IP connectivity:
    Wide range of implemented protocols: independent TCP/IP connections (remote client or server), SNMP, SNTP, TFTP for automatic firmware upgrade, HTTP for Web access and remote management.
  • VoIP:
    Customizable VoIP session for audio streaming (including multicast)  and full-IP remote control.
  • Remote control via RS232 and RS422 of VHF coast station:
    VHF coast station fully concurrent with IP and VoIP control.
  • BITE:
    Self-monitoring of internal parameters and auto-recovering when fault condition disappears (non-volatile alarm log memory). Alarm signalling on TCP/IP connections, RS232 and RS422, SNMP traps.
  • Data-link function:
    9600 bit/s on 25 kHz channels.
  • 600-Ohm dedicated analog input, output and recorder lines
  • On-site operation:
    Keyboard, display and microphone plug for quick on-site tests.
  • Modularity:
    High modularity for easy maintenance.
  • Resilience:
    External structure in aluminium with high immunity to shock and vibrations.
General specifications of VHF coast station
Frequency range: 156.025 ÷ 162.025 MHz
Extended optional range: 146 ÷ 174 MHz
Channel spacing: 25 kHz and 12.5 kHz
Modulation type:  DSC (G2B)
Frequency accuracy: Better than 1 ppm
Switching time Rx/Tx: 10 ms
Power supply: 19.6 ÷ 31.2 Vdc
Dimensions (H x W x D): 173 x 96 x 277 mm
Weight: 2.5 kg
Operating temperature: -20 °C ÷ +55 °C
Storage temperature: -40 °C ÷ +70 °C
Humidity: 95% with T: +25 °C ÷ +55 °C   

Transmitter Specifications of VHF coast station
RF power: Adjustable ≤1 ÷ 40 W ±1.5 dB
Antenna port impedence: 50 Ω
Audio bandwidth: 300 ÷ 3000 Hz (25 kHz)
300 ÷ 2550 Hz (12.5 kHz)
Spurious emissions: < 0.25 μW (-36 dBm)
AF distortion: < 5 %

Receiver Specifications of VHF coast station
Sensitivity: ≤ 0.25 μV @ 20 dB SINAD dual antenna
Selectivity: ≥ 70 dB
Protection against spurious response: ≥ 80 dB
Protection against intermodulation: ≥ 85 dB
Spurious emission: ≤ 2 nW (-57 dBm)
Receiver SNR: ≥ 40 dB
Audio bandwidth: 300 ÷ 3000 Hz (25 kHz)
300 ÷ 2550 Hz (12.5 kHz)
AF distortion: < 5 %

Standard
  • EN 60950-1 (2006)
  • EN 60950-1 (2006) / A11 (2009)
  • EN 60945 (2002)
  • ETSI EN 301 489-1 V1.6.1 (2005-09)
  • ETSI EN 301 489-5 V1.3.1 (2002-08)
  • ETSI EN 301 929-1 V1.2.1 (2007-02)
  • ETSI EN 301 929-2 V1.2.1 (2007-02)
  • ITU-R M.493-14
  • ITU-R M.541-10




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