Garmin GMR Fantom 256 Open Array and Pedestal in White

Garmin GMR Fantom 256 Open Array and Pedestal in White

Garmin GMR Fantom 256 Open Array and Pedestal in White  is a high-performance, 250-watt solid-state open-array radar and pedestal system designed for experienced mariners. As of early 2026, it remains Garmin's most powerful 6-foot consumer radar, offering elite target detection ranges from as close as 20 feet up to 96 nautical miles

Garmin GMR Fantom 256 Open Array and Pedestal in White Key Features

• MotionScope™ Technology: Uses the Doppler effect to detect moving targets and highlight them in different colors (e.g., targets moving toward you vs. away), improving collision avoidance and navigation around weather or birds.
• 250W Pulse Compression: Provides high-resolution imaging equivalent to a much higher-wattage magnetron radar while maintaining low power consumption and instant-on capability.
• Scan-to-Scan Averaging: A key feature that aids in reducing sea clutter and interference for a cleaner, more stable display.
• MARPA Target Tracking: Automatically acquires and tracks up to 30 targets to help prevent collisions (requires a separate heading sensor).
• Auto Bird Gain: Specifically designed to locate flocks of birds at the water's surface, which often indicates the presence of baitfish and active fishing spots.
• Dual Range with Overlay: Supports split-screen views to monitor both close and long-range targets simultaneously, with the ability to overlay radar images directly onto your chartplotter map.
• Variable Rotation Speeds: Offers 24 RPM for low power consumption and 48 RPM for rapid screen updates.
• True Echo Trails: Displays fading trails of moving targets while accounting for your own boat's movement.
• Dimensions: The 6-foot (182.9 cm) antenna assembly stands approximately 40.3 cm high.
• Durability: Rated IPX6 for water resistance and capable of withstanding maximum wind loads of up to 80 knots.
• Weight: The pedestal weighs 15.7 kg (34.7 lbs), and the antenna array adds roughly 7.3 kg (16 lbs).
• Connectivity: Integrated via the BlueNet™ Network using RJ45 ports and includes 15-meter power and network cables. 

Garmin GMR Fantom 256 Open Array and Pedestal in White FAQs

• What is the maximum detection range? The GMR Fantom 256 can detect targets from as close as 20 feet (6 meters) out to 96 nautical miles.
• How does MotionScope™ technology work? It utilizes the Doppler effect to detect and highlight moving targets in different colours (e.g., highlighting targets moving toward you) to help avoid collisions, track weather, or find birds.
• What are the key power and electrical requirements?
  • Power Input: 10-32V DC.
  • Power Consumption: Typical consumption is 150W; maximum consumption can reach 260W in high winds (80 knots).
  • Fuse Requirement: It typically requires a high-rated fuse; check the GMR Fantom Series Installation Instructions for the specific gauge and fuse for your setup.
• Does it support automatic target tracking?
  Yes, it features MARPA Automatic Acquisition, which can trigger and track up to 30 targets simultaneously without user intervention. Note: MARPA requires a heading sensor, sold separately.
• What is the rotation speed?
  It offers dual rotation speeds of 24 and 48 RPM. The high-speed 48 RPM mode is only available in single-range mode with MotionScope disabled and at range settings of 12 NM or lower.
• How do I troubleshoot power or connectivity issues?
  Check the status LED located near the power and network ports. A blinking green light indicates normal operation, while blinking red indicates an error. Ensure all firmware is updated via Garmin Express or the ActiveCaptain app.
• What mounting precautions should I take?
  Mount the radar at least 1 meter (40 inches) away from any transmitting equipment or cables carrying radio signals (like VHF) to avoid interference. The mounting surface must be flat and parallel to the vessel's waterline.