em-trak R300 AIS Receiver [413-0058]R300 AIS Receiver The em trak AIS R300 is a dual channel high performance AIS receiver that provides the best operational performance. You can receive high performance, dependable AIS messages from the em trak R300 thanks to its compact, durable, and power efficient design. All AIS messages within range will be reliably received, processed, and output to your chart plotter or PC in real time. Features: Small and robust Plug and play connectivity with