Raymarine Ray91 Modular Dual-Station VHF Black Box Radio System w/AIS [E70493]Ray91 Modular Dual Station VHF Black Box Radio System with AIS The Ray91 modular VHF radio brings dual station communications and traffic management to a whole new level of power, performance, and flexibility. The Ray91 is a black box design with a transceiver that hides out of sight while the ergonomic RayMic handset and remote speaker provide full control of the radio with crystal clear audio. Features: Black box, dual station capable VHF radio