Simrad RS100-B Black Box VHF Radio w/Class B AIS GPS Antenna [000-15792-001]RS100 B Black Box VHF Radio with Class B AIS & GPS Antenna Navigate safely with the Simrad RS100 B VHF marine radio integrated with a Class B AIS transceiver and GPS. Stay connected from anywhere on your vessel with up to eight handsets (four wired and four wireless) and four external speakers. An external GPS 500 delivers advanced AIS functionality. Complete visibility with integrated AIS The RS100 B system features a Class B AIS receiver and