Tianjin 712 Communication & Broadcasting Co., Ltd.| Manufacturer
Tianjin 712 Communication & Broadcasting Co., Ltd.

China Manufacturer with main products: AIS, TETRA, AIS Class B, Hand Protable

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AIS System (712)

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Place of Origin: Tianjin in China

Specifications

The TCB AIS Class B receiver and transmitter unit is the culmination of six years AIS development, and the application of some of the most advanced wireless digital development skills and techniques. The result is a small, low cost, reliable, robust and high performance product suitable for a variety of applications within the AIS environment.
Features
Simple Design Concept
TCB's AIS Class B is an elegant single PCB solution optimising the combined application of hardware and software
Standard NMEA interface
As standard the TCB Class B can be connected to any NMEA compatible GPS plotter or suitably configured PC or PDA
Anti-Tamper
TCB's Class B is enabled to alert users and/or authorities if the unit has been either removed or tampered with once installed (configurable option additional to the Class B specification
Distress Alert Transmit
Distress alert button enables the user to transmit a distress alert with the GPS position of the vessel (configurableoption additional to the Class B specification)
Water Resistance
Robust, coated aluminium case, to ensure the unit is able to operate in the harshest of environments. IEC60945 - Cat C.
Internal GPS Module
TCB's Class B includes an integral GPS module to facilitate ease of installation and use.

Physical
Dimensions: 190 x 135 x 83 mm (L x W x H)
Weight: 1450g
Power
12V DC (9. 6-15. 6V)
Average power consumption 6W
Power Consumption 0. 5A continuous
GPS Receiver (AIS Internal)
IEC 61108-1 compliant
RTCM corrections
Electrical Interfaces
RS232 38. 4kbaud bi-directional
RS422 NMEA 38. 4kbaud bi-directional
Connectors
VHF Antenna connector
GPS Antenna connector
RS232/RS422/Power
Environmental
IEC 60945
Operating Temperature: -25oC to +55oC
VHF Transceiver
1, Transmitter x 1
2, Receiver x 2 (one time shared between AIS/DSC)
3, Frequency : 156. 025 to 162. 025 MHz in 25KHz steps
4, Output power: :33dBm ± 1. 5 dB
5, Channel Bandwidth: 25KHz
6, Channel Step: 25KHz
7, Modulation modes:
25KHz GMSK (AIS, TX and RX)
25KHz AFSK (DSC, RX only)
8, Bit rate:9600 b/s ± 50 ppm (GMSK)
1200 b/s ± 30 ppm (FSK)
9, RX Sensitivity:Sensitivity - 107dBm 25KHz
Message Error Rate 20%
Co-Channel 10dB
Adjacent Channel 70dB
IMD 65dB
Blocking 84dB
Designed to be compliant with the following standards
1, IEC62287 FDIS
Draft IEC standard, Class B AIS
2, IEC60945 Edn 4. 0
IEC standard, environmental requirements
3, ITU-RM. 1371-1
Universal AIS Technical Characteristics
4, IEC61162-1 Edn. 2. 0
IEC standard, digital interfaces part 1
5, IEC61108-1
IEC standard, GPS receiver equipment
6, ITU RR AP18eWRC2000
Radio Regs., Appendix 18, Table of frequencies in the VHF maritime mobile band
7, ITU R M. 493-9
Digital Selective Calling system for use in the maritime mobile service
8, ITU-R. M 825-3
Characteristics of a transponder system using DSC for use with VTS and ship-to-ship identification

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