"The Simrad HALO24 Dome Radar revolutionizes radar by offering an almost real-time view, with industry-first 60-RPM operation at close range for the ultimate in collision avoidance. Identify hazards in an instant with VelocityTrack Doppler technology, and enjoy simultaneous short and long-range coverageup to 48 nautical milesfrom 1 compact 24"" dome antenna. Pulse-compression technology means no compromises in detection at either selected range, while beam sharpening provides enhanced separation between small or distant targets. The Simrad HALO24 Dome Radar delivers a full, 360 sweep every second, at ranges up to 1.5 nautical miles. These ultra-fast updates give you an almost real-time view at close range, offering the ultimate view for collision avoidance. VelocityTrack technology provides instant visual feedback on whether targets are coming towards you or moving away. Simple color coding highlights potential hazards, improving your situational awareness and further reducing your risk of collision, with no need to manually select individual targets, and no limit to the number of targets on screen at one time. Unlike ordinary boat radar, HALO24 wakes instantly from its low-power standby mode, delivering this high-speed radar coverage exactly when and where you need it. Start-up takes mere seconds, not minutes like traditional pulse radar. Whether you navigate through crowded waterways or contend with poor visibility, HALO24 radar immediately cuts through the clutter to give you a clear and current picture of your surroundings. Requires an Ethernet-connected Simrad multifunction display or radar control unit. MARPA Target Tracking functionality requires a heading sensor and GPS receiver.Manufacturer model #: 000-14535-001. 48-nm marine radar in a compact 24"" dome Advanced pulse-compression technology with beam sharpening Simultaneous Dual Range operation sees near and far Ultra-fast 60-RPM operation at ranges up to 1.5 nm VelocityTrack Doppler technology for collision avoidance Easy operation with harbor, offshore, weather, and bird modes MARPA target tracking (up to 10 targets, 20 in dual range) Ready instantly from standby"