Garmin GMR Fantom 18x/24x Dome Radar

The Garmin GMR Fantom 18x and 24x dome radars are the perfect blend of raw power, cutting-edge technology, and refined design. Available in both white and sleek black finishes, these solid-state radars pack an impressive 50 watts of output power, providing exceptional target detection and clarity.

Designed for mariners who demand performance in compact form, the Fantom 18x and 24x radars offer a maximum range of 48 nautical miles with high-resolution true color imaging, MotionScope™ Doppler technology, and a full suite of smart features like Auto Bird Gain, Dual Range, and Timed Transmit Mode to help you see farther, react faster, and sail smarter—even in fog, rain, or darkness.

What’s Included

• Garmin GMR Fantom 18x or 24x Dome Radar (based on selected model)

• Power cable (15 m / 49.21 ft)

• Network cable (15 m / 49.21 ft)

• Mounting hardware kit and installation template

• Installation instructions

Key Features

• 50W High-Power Solid-State Radar: Detects targets from 20 feet up to 48 nautical miles with exceptional clarity.

• Color Options: Choose from black or white domes to match your vessel’s style.

• MotionScope™ Technology: Doppler-based color-coded display shows moving targets heading toward or away from you.

• High-Resolution Imaging: Enhanced 8-bit true color display with excellent target separation.

• Power Save Mode: Conserve energy by choosing power levels and active times down to the second.

• Timed Transmit Mode: Customize radar operating time for maximum efficiency.

• Auto Bird Gain: Detects birds on the water’s surface to indicate potential fishing hotspots.

• Dual Range Display: View near and far radar images simultaneously in split-screen.

• Echo Trails: View trails of moving targets to identify movement patterns and potential hazards.

• Dynamic Sea Filter & Auto Gain: Automatically optimizes performance in calm, medium, or rough sea states.

• MARPA Automatic Target Tracking: Tracks up to 30 targets with no manual setup required (heading sensor required).

• Radar Overlay: Combine radar returns with chartplotter maps for better situational awareness.

• VRM and EBL Tools: Measure range and bearing to objects with precision.

Garmin GMR Fantom Specifications

General

• Dimensions:

  • 18x: 20″ x 9.8″ (50.8 cm x 24.8 cm)

  • 24x: 25.4″ x 9.8″ (64.5 cm x 24.9 cm)

• Weight:

  • 18x: 14.0 lbs (6.4 kg)

  • 24x: 17.4 lbs (7.9 kg)

• Antenna Length:

  • 18x: 17″ (43.18 cm)

  • 24x: 23″ (58.42 cm)

• Beam Width:

  • 18x: 5.2° horizontal, 25° vertical

  • 24x: 3.7° horizontal, 25° vertical

• Max Range: 48 nautical miles

• Min Range: 6 meters

• Waterproof Rating: IPX7

• Rotation Speed: Up to 60 rpm

• Radar Type: Dome

Electrical

• Power Input: 10–32 V DC

• Power Consumption (Standby): 4 W

• Max Power Consumption (Power Save): 24 W

• Max Power Consumption (Normal Mode): 33 W

• Transmit Power: 50 W

Advanced Radar Features

• Dual Range & Dual Radar Support

• Radar Overlay Capability

• Auto Bird Gain / Auto Gain (Dynamic)

• Echo Trails, MARPA, MotionScope

• Target Size Adjustment, Scan Averaging

• Guard Zone Alerts, Timed Transmit, VRM & EBL

Benefits

• Power Meets Efficiency: 50 watts of detection power combined with Power Save and Timed Transmit ensures maximum range without draining your battery.

• Track Targets Instantly: MotionScope technology visually identifies moving targets and helps avoid collisions or find fish fast.

• Optimized for Clarity: With high gain and 8-bit true color, the radar distinguishes targets more clearly and at greater distances.

• Smart Navigation Tools: Built-in VRM/EBL, MARPA tracking, and guard zones provide enhanced control and confidence.

• Fish Like a Pro: Auto Bird Gain identifies surface-feeding birds so you can go where the action is.

• Easy to Use: Simple setup, intuitive operation, and no complex menus mean more time boating and less time configuring.

• Stylish & Compact: Perfect for powerboats, center consoles, cruisers, and sailboats that need serious performance in a small footprint.

FAQs

Q: What’s the main difference between the GMR Fantom 18x and 24x?
A: The 24x model offers a narrower beam width (3.7° vs. 5.2°) for improved target resolution and slightly better long-range performance. The 18x is more compact and lightweight.

Q: Is a heading sensor required?
A: Only for MARPA target tracking and radar overlay features. The radar operates fully without it but gains added functionality with a compatible heading sensor (sold separately).

Q: Can I use both near and far ranges at the same time?
A: Yes. The Dual Range feature lets you view short- and long-range returns simultaneously on one display.

Q: Is the radar compatible with Garmin chartplotters?
A: Absolutely. It integrates seamlessly with Garmin chartplotters, especially GPSMAP® series and other compatible MFDs.

Q: How do I conserve power on long trips?
A: Use Power Save Mode and Timed Transmit to adjust when and how long the radar transmits, down to the second.