Product and system overview ContentsProduct overviewThe Ray53, Ray63 and Ray73 are 12 V dc, Class D Digital Selective Calling (DSC) VHF radios. DSC enables you to make a selective call to a specific radio, and to transmit and receive position information to and from the selected radio. DSC also allows transmission of a distress alert to all radios within range at the touch of a button. Once a DSC request is sent and acknowledged, voice communication is carried out on the channel chosen by the caller. The radio can transmit and receive on all available US, Canadian, International and Private marine VHF channels.Required additional componentsYour product requires a VHF antenna.Optional additional componentsOptional wireless componentsYour radio supports connection of wireless handsets and speakers via a wireless hub, enabling creation of additional fully functional, wireless handset stations.Compatible Raymarine MFDsDSC distress messages can be displayed on Raymarine® MFDs / Chartplotters when the radio is connected via SeaTalk NG to one of the following MFDs / Chartplotters:Incompatible MFDsThis product is NOT compatible with the following legacy Raymarine® multifunction displays.Software updatesRaymarine® periodically releases software updates for its products. These updates provide new features, current feature enhancements and bug fixes which improves product performance and usability. Previous topic: Document and product informationNext topic: Licensing