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~Features
1. Electrical function is accordance with IEC 62297-1
2. Dual Channel function: Two TDMA receivers are receiving datum in two
independent channels at the same time, and one TDMA transmitter is transmitting in two independent channels alternately. 3. CSTDMA function can avoid and solve communication conflict.  4. Transponder has external serial data interface (RS-422, RS-232). 5. Transmit and receive safety message, and equipped with “SOS” safety button. 6. Support three operation mode: Carrier-sense mode, assigned mode and polled mode. 7. Internal GPS receiver, as data source for position, COG and SOG can be    connected to all devices compatible to GPS and PC, PDA, ECDIS, RADAR, etc. 8. Support DSC reception based on TDMA channel. 9. Alarm and indication (via LED) for power, error, time-out, status.

Specification
STANDARDS                                      IEC 62297-1                                       IEC 61162-1                                       IEC 60945-2002 VHF RECEIVER Frequency Range                    156.025 MHz - 162.025 MHz Channel Bandwidth                  25 KHz Number of AIS Receivers             2 Receiver (one time share                                    between AIS / DSC) 1 Transmitter CH-1                               default CH 87B (161.975 MHz) CH-2                               default CH 88B (162.025 MHz) Number of DSC Receiver             1 (CH 70) RX DSC                            156.525 MHz Max. Usable Sensitivity               PER ≤ 20% at -107dBm VHF TRANSMITTER Power Output                       2 Watt (33dBm ±1.5 dB) Modulation                         GMSK / FM Data Rate                          9600 bps / per channel Modulation Spectrum                IEC 62287 DSC RECEIVER Modulation                         1300 Hz / 2100 Hz FSK Data Rata                          1200 bps ± 30 ppm Spurious Response Rejection          ≥ 70 dB for signal@-104 dBm; BER≤1% Blocking                            ≥ 70 dB for signal@-104 dBm; BER≤1% GPS RECEIVER Receiving Channels                    12 Channels Acquisition Sensitivity                 -140 dBm Tracking Sensitivity                    -150 dBm Position Accuracy                      < 2.5m CEP (GPS) without SA Output Rate                          1 Hz

POWER Supply Voltage                        12V DC (10V - 20V) Power Consumption                    Less than 10W MAIN UNIT                                       4 LED Indicator Working Status                                       1 ON/OFF Switcher INTERFACE Ports                                NMEA 0183 / RS-422 / RS-232 GPS Antenna (Optional)               Female TNC Connector VHF Antenna (Optional)               Female Type M Connector ENVIRONMENT Operating Temperature               Antenna: -25 C - 70 C                                    Others: -15 C - 55 C Storage Temperature                 -25 C - 70 C Humidity                            Operating: 0 - 95 RH at 40 C                                     GPS Antenna Operating: 100% sealed                                     VHF Antenna Operating: 100% sealed Vibration                            IEC 60945 Waterproof                          IPX 5 PHYSICAL Size in mm (W)                      234 mm Size in mm (H)                       40 mm Size in mm (D)                       167 mm Weight                              ＜ 1 kg