Garmin GMR Fantom 254 Open Array and Pedestal in White

Garmin GMR Fantom 254 Open Array and Pedestal in White

Garmin GMR Fantom 254 Open Array and Pedestal in White are a high-performance 4-foot solid-state open-array radar and pedestal system. As of 2026, it remains Garmin’s most powerful 4-foot solid-state radar, delivering 250 watts of pulse compression power—roughly equivalent to a 6kW magnetron.

Garmin GMR Fantom 254 Open Array and Pedestal in White Key Features

• Range: Detects targets from as close as 6 meters (20 feet) up to 96 nautical miles.
• Beam Width: Features a narrow 1.8° horizontal beam for high-resolution imaging and excellent target separation.
• Rotation Speed: Adjustable speeds of 24 and 48 RPM for fast screen updates or reduced power consumption.
• Durability: Rated IPX6 for water resistance and built to withstand wind loads up to 80 knots.

Garmin GMR Fantom 254 Open Array and Pedestal in White FAQs

• What is the transmit power and range? The unit features 250 W of solid-state transmit power and has a detection range from 6 meters (20 feet) up to 96 nautical miles.
• What are the physical dimensions? The pedestal measures 42.1 x 36.4 x 27.1 cm, while the full 4-foot assembly stands 40.3 cm high with a 131.4 cm diameter.
• How much does it weigh? The total weight is approximately 20.9 kg (46.1 lbs), consisting of a 15.7 kg pedestal and a 5.2 kg array.
• What is the rotation speed? It offers dual rotation speeds of 24 and 48 RPM. High-speed 48 RPM is only available in single-range mode with MotionScope disabled on ranges of 12 NM or lower. 
• What is MotionScope™? This technology uses the Doppler effect to detect moving targets and highlights them in different colours (e.g., targets moving toward you vs. away) to help avoid collisions or find birds.
• Does it support MARPA? Yes, it includes mini-automatic radar plotting aid (MARPA) that can automatically track up to 30 targets. For best results, an optional heading sensor (sold separately) is required.
• What is Auto Bird Gain? This feature helps locate flocks of birds at the water's surface, which often indicates the presence of baitfish.
• Does it have dual-range capability? Yes, the single antenna can display radar images side-by-side on your chartplotter with independent range settings.
• What are the power requirements? The unit operates on a 10-32 V DC input. Typical power consumption is 150 W, with a maximum of 260 W in high winds.
• What is the water rating? It is rated IPX6, meaning it is protected against powerful water jets.
• How do I update the software? Updates can be performed using the Active Captain app on a mobile device or via an SD card using Garmin Express on a computer. 
• What comes in the box? Standard packages typically include the 
  GMR Fantom 254 pedestal and antenna, a 15-meter power cable, a 15-meter network cable, and a mounting hardware kit.