for HAR‑100 AIS Receiver Dual Channel 10 to 35V DC 38400 Bps Sensitive Accurate GPS Receiver for Boat Item Type: AIS ReceiverMaterial: ABSSpecifications:Connectors: VHF antenna connector PL259 female GPS Antenna Connector: TNC female Power Input; 10-35V DC Power Consumption: 0.95W Electrical Interface: RS232 and RS422  Baud Rate: 38400 bps NMEA Sentence Output:  VDM , VDO , RMC, VTG, GGA, GSA, GSV, GLL AIS Characteristics Frequency Rate: 156.025MHZ- 162.25MHZ AIS Channel 1: CH87B (161.975MHZ) AIS Channel 2: CH88B (162.025MHZ) 2 LED indicators for receiver channel Receiver Performance: 1. Receive Sensitivity: -118 dBm Packet Error Rate <5% 2. Intermodulation Suppression 65dB 3. Adjacent Channel Selectivity >70dB Connection: PWR+: DC+ PWR-: DC TXD: RS232 TX GND: RS232 GND TX+: RS422 A TX-: RS422 B