Dual Channel AIS Receiver USB Output with Foldable Stainless Steel Antenna for Marine Boat Navigation Features： 1、Main Uses: This is just an AIS receiver, which allows you to receive AIS messages or information directly via USB to your laptop or tablet. 2、Folding Antenna: The antenna is telescopic and foldable, made of stainless steel to ensure rust prevention, not easy to bend or break. 3、Characteristic: With dual receiver channel, 162.025 MHz and 161.975 MHz. The receiver sensitivity is better than ‑103dBm at ‑20% BER. 4、Portable and Functional: Marine AIS receiver is lightweight and compact, portable, easy to carry, for boat or marine use. 5、Strict Standard: Manufactured in strict accordance with standard requirements, professional manufacturing, high performance, strong reliability. Specification： Item Type: AIS Receiver Material: ABS + stainless steel Operating Current: < 35 MA Receive Channels: 162.025 MHz and 161.975 MHz Modulation: GMSK Receiver Sensitivity: Better Than -103dBm at. 20% BER Antenna Port: SMA Connector Data Port: NMEA 0183, USB, 38400 Bps Operating Temperature: -20 to 55℃ Interface: USB 2.0 Antenna Port: SMA Connector Package List： 1 x AIS Receiver ( 2pcs Accessories  )