Shore-Based Radiotelephone Station model MSТ-1124M

Shore-Based Radiotelephone Station model MSТ-1124M

MST-1124M is an all-in-one marine VHF transceiver 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-1124M 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

• 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:
  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.
• Full-duplex capable
• 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

Frequency range:	156.025 ÷ 162.025 MHz
Extended optional range:	146 ÷ 174 MHz
Channel spacing:	25 kHz and 12.5 kHz
Modulation type:	PM (F3E/G3E)
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

Potenza RF:	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

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