With the CM 300-005 Cobra Positioning System, you will be able to quickly add GPS capability to your fixed mount Marine VHF 2-way radio enabling all DSC (Digital Selective Calling) calls to include your position information. The CM 300-005 will insure that your position information is included with any Distress Calls, enabling the Coast Guard or any ships in your area to quickly come to your aid. The CM 300-005 is compatible with any current DSC enabled radio by simply connecting to the radio’s NMEA 0183 input. All the necessary cabling is included in in package. Nothing more is needed.