Garmin GMR 604 Hi-Def Open Array Radar

The Garmin GMR 604 is a benchmark in HD radar technology. It offers superior target detection and image resolution that brings more detail and focus to your onboard marine network. With only a 1.8 degree beamwidth, the GMR 604 has the ability to spot smaller targets at up to 72 nautical miles, giving your system a more accurate picture of your surroundings. Any Garmin chartplotter can double as your radar screen, or operate in a split-screen mode, simultaneously showing radar and charts. The powerful HD family of radars features an improved transmitter design with a sharper pulse, which allows for superior radar performance in demanding conditions. Another feature allows for 24/48 rpm rotation, also viewed simultaneously on network screens.

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Pros Cons
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Large 72nm range
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1.8 degree beam width
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Supreme performance in bad weather conditions
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Improved transmitter with sharper pulse rate
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Connects to chartplotter, allowing it to double as radar screen
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Selectable 24/48 rpm rotation not automatic
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Collision avoidance option requires heading sensor

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