Garmin GMR Fantom 254 4′ 250W Open Array Radar

Resolving close-range channel buoys down to 20 feet, a Garmin Fantom 254 marine radar pairs a 4-foot open array with 250W pulse compression, tracking MotionScope Doppler targets across 96 nautical miles at 46.9 lbs.

250W output matches 25kW magnetron performance
1.8-degree beamwidth resolves tight harbor traffic
Minimum 20-foot range resolves close obstacles
Dual 24/48 RPM speeds update targets
IPX6 waterproof casing survives heavy storms

$7,819.00

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SKU: GRM-FAN254-BK Category: Marine Radars Brand: Garmin

SKU:

GRM-FAN254-BK

Description

Replace a damaged or weathered open-array radiator without rebuilding the entire radar system with the Garmin GMR Fantom 4-Foot Open Array Antenna in Black. This 52-inch replacement array gives boat owners a practical way to restore a compatible Fantom scanner while maintaining a compact 4-foot sweep footprint. Need a matched array for a Fantom 5x, 12x, or 25x pedestal? This antenna-only component delivers a 1.85° horizontal beamwidth and 22° vertical beamwidth when installed on a compatible Garmin pedestal.

Key Specifications

Garmin GMR Fantom 4-Foot Open Array Antenna, Black, part number 010-01707-10-BK.
Antenna array only; pedestal, radar transmitter, display, cables, and mounting hardware are not included.
1.85° horizontal beamwidth and 22° vertical beamwidth.
52-inch (132 cm) overall antenna length.
11.4 lb (5.2 kg) antenna-only weight.
Compatible with supported Garmin GMR Fantom 5x, 12x, and 25x pedestals.
Designed for installations rated for wind speeds up to 80 knots when the complete system is installed as specified.
Made in Taiwan with a 2-year Garmin limited warranty, subject to regional terms and conditions.

Compatibility

This is a replacement antenna array, not a complete radar. A compatible Garmin Fantom pedestal supplies transmit and receive functions, while a compatible Garmin chartplotter displays radar video and controls the scanner through Garmin Marine Network or a compatible Garmin BlueNet configuration.

The 1.85° beamwidth is determined by the 4-foot array and helps separate targets that are close together in bearing. Radar range, transmit power, MotionScope Doppler, MARPA, Bird Mode, echo trails, rotation speed, and other operating features depend on the paired pedestal, connected display, sensors, and software configuration.

Installation Notes

Install the antenna on an approved Fantom pedestal mounted to a rigid, level radar platform. Allow full clearance for the 4-foot rotating array and keep the scanner clear of people, rigging, antennas, lights, exhaust, and structures that could block or reflect radar energy. Follow the pedestal installation manual for personnel safe distances, compass-safe distances, torque values, and electrical requirements.

Use marine-grade mounting hardware and inspect the pedestal-to-array connection regularly. Rinse salt residue with fresh water when appropriate, avoid high-pressure spray at joints and seals, and address corrosion, loose fasteners, or damaged hardware promptly. Radar is a navigation aid and does not replace a proper lookout, safe speed, charts, or collision-regulation compliance.

Before Ordering

Confirm the exact Fantom pedestal model, compatible Garmin chartplotter, radar-network setup, 4-foot rotation clearance, platform strength, wind-load suitability, and required installation hardware before ordering.

Brand	Garmin
Full Model SKU/Code	010-02585-01 (GMR Fantom 254 Complete Pack)
Country of Origin	Taiwan
Radar Type	Solid-State Pulse Compression with MotionScope Doppler Technology
Antenna Form Factor	Open Array System (Includes Pedestal Base and 4-Foot Radiator Bar)
Antenna Size Class	4-Foot Open Array Width
Peak Power Output	250 Watts Solid-State Output Equivalent
Maximum Radar Range	96 Nautical Miles (NM)
Minimum Radar Range	6 m / 20 ft Close-Range Resolution Target Traversal
Beamwidth Horizontal	1.8° Narrow Target Angular Discrimination
Beamwidth Vertical	22° Expansion Beam Profile Layout
Rotation Speed	24 RPM / 48 RPM Dual Dynamic Automated Scaling
Target Tracking Capacity	True Echo Trails, MARPA Target Tracking (Up to 10 Targets Simultaneously)
Data Networking Protocols	Garmin Marine Network High-Speed Ethernet / BlueNet Compatibility
Operating Voltage	10 to 32 Volts DC Universal Input Rail Standard
Power Consumption	Active Transmitting: 100 Watts / Energy-Saving Power Standby: 15 Watts
Waterproof Rating	IPX6 Extreme Weather Waterproof Enclosure Rating
Wind Load Resistance	Up to 80 Knots Structural Integrity Threshold
Dry Weight	21.3 kg / 46.9 lbs (Combined Pedestal and 4-Foot Array Assembly)
Application	High-performance offshore center consoles, flagship tournament sportfishers, and large coastal yachts seeking near-instantaneous target tracking and elite long-range bird mode capabilities (35-75+ ft hulls)