Automatic Identification System is a high-tech device which is showing real time voyage information as such position, route, speed of ships. It is a device to prevent from doing collision of ships on sea as well as comply with IMO regulation. It is possible to identify position of other ships, judge the voyage routes even if status of not viewing any targets by radar and to manage more efficient secure activities as such preventing against collision, wide-range monitoring, search and rescue.
Automatic Identification System is operated at a bandwidth of VHF frequency and ITU (International Telecommunication Union) a WRC (World Radio communication Conferences) in 1997 has designated 161.975 MHz (87B channel), 162.025 MHz (88B channel) as two VHF frequencies for AIS.
CLASS B AIS TRANSCEIVER AIS-50B
Features
• Transfer data via AIS channel 87B(161.975MHz)&88B(162.025MHz)
• Dual baud rate 4800 or 38400
• RS-232,422 Input/Output Port
• Simple connection through RS-232, 422
• LED display for easy status check-up
• Enable to transceive SRM(Safety Related Message)
Specifications
• Frequency : 156.025MHz ~ 162.025MHz,Default channel 88B, AIS(162.025MHz), Default channel 87B, AIS(161.975MHz)
• Channel spacing : 25kHz
• VHF ANT connector : TNC
• GPS ANT connector : BNC
• Antenna impedence : 50Ω
• Frequency Stability rate : ±10PPM(-20℃ ~ +60℃)
• Data rate : 9600 bps
• Power supply : DC 12V~34V (DC 12V, 1.2A Max.)
• Operation temp : -15℃ ~ +55℃
• Output power : 2W(33dBm ± 1.5dB)
• Modulation : GMSK
• Sensitivity : -107dBm
• Adjacent channel : 70dB
• Cochannel : 10dB
• IMD : 65dB
• Blocking : 84dB