Icom IC-M127 [17/48] Digital selective calling

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DIGITAL SELECTIVE CALLING UX 130 required General When an optional UX 130 DSC UNIT is installed digital selec In addition when a GPS receiver NMEA0183 ver 1 5 2 0 or tive calling or DSC can be used via the transceiver DSC is a 2 1 method gether with the vessel s identity when making a distress call of radio communications involving digital signals is connected your vessel s position is transmitted to rather than the more conventional method of voice communi cations The advantage of using digital communications over See p 38 for unit installation voice communications is that information especially useful for distress calls and other urgent matters can be pre pro grammed into a radio and transmitted accurately DSC TYPE DESCRIPTION This sends distress information which includes your vessel s ID and position UTC time data Distress call when a GPS receiver is connected Send under emergency conditions only DSC acknowl edgement will be received from a coast station after making a distress call Distress relay call All ships call This is used to alert Coast stations or other ships when a vessel in distress is unable to do This is used for non emergency situations This signal includes information which allows a re ceiving transceiver to automatically select a specified channel for voice communication tination ID channels select the desired ID in advance Two kinds of acknowledgements able to comply unable to comply are available for sending or receiving after an individual call Geographical area call pgs 14 18 p 18 so The IC M127 can only receive this type of signal not transmit This allows you to send a signal to a specific vessel only The transceiver can store up to 10 des Individual call REF This is used for announcement to all ships in the specified area when a GPS receiver is pgs15 18 pgs 16 19 p 19 connected calls directed to areas other than yours are rejected Receive only for the IC M127 13

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