Full Class B SOTDMA with smartAIS send and receive and integrated no-loss splitter. Monitor and control onboard systems and keep alerted on board or ashore from your smartphone. Operating Temperature: -25°C to +55°C (-13°F to 131°F); Supported Protocols: AIS Class B SO-TDMA, VHF Voice, Class D DSC, ATIS (user configurable, EU region), NOAA Weather (US region); Transmitter Frequency Error: Less than 300Hz; Antenna Connector: SO239; Splitter: Max input power 25W, Insertion Loss RX 0dB, TX < 1dB; Splitter Connector: BNC (2W).