Raymarine Radar – Guide to radome and open array antennas

Explore the differences between radome scanners and open array antennas, their functions, and which radar suits your boat.

Raymarine offers a wide range of marine radar solutions for all types of boats – from small RIBs to large motor and sailing yachts. Whether you're fishing, sailing, or cruising, Raymarine radar helps you detect traffic, obstacles, hazards, and approaching weather.

To provide maximum performance, we offer radar in two main configurations: radome scanners and open array antennas.

Radome scanners – Perfect when space is limited

Radome radar is ideal for sailboats, RIBs, and smaller motorboats. They are compact, have no exposed rotating parts, and are easy to mount even in tight spaces.

Raymarine offers three types of radome radar:

• Quantum: Uses CHIRP pulse compression for detailed imaging at both short and long distances. Low power consumption and wireless data transfer make it perfect for sailboats and electric boats.
• Quantum 2: Features advanced Doppler functionality that color-codes moving targets (red for incoming, green for outgoing) for quick risk assessment.
• HD Color Radome (18” and 24”): Magnetron-based radar with 4 kW output power, dual ranges, and bird mode – popular among fishing boats.

Open array scanners – For maximum performance

Open array antennas provide longer range, higher sensitivity, and a sharper radar image. They require more space and are heavier, but offer superior performance for larger boats and commercial vessels.

Advantages of open array antennas:

• Better target discrimination and detailed coastline.
• Longer range thanks to greater antenna length (3–6 feet).
• Less distortion and a cleaner radar image.

Raymarine's advanced open array radar

• Cyclone Radar: CHIRP technology, Doppler mode, antenna lengths of 3–6 feet, and output power up to 110 W. Withstands wind speeds over 100 knots – perfect for high-performance motorboats.
• Magnum Radar: Traditional magnetron radar with 4 kW or 12 kW output power and 4 or 6-foot antennas. Ideal for motorboats, fishing vessels, and commercial vessels.

Summary – Which radar should you choose?

For smaller boats with limited space, Quantum or HD Color Radome is an excellent choice. For larger boats requiring maximum range and performance, Cyclone or Magnum with an open array antenna is recommended.

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