Garmin GMR Fantom 18x Marine Radar


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Garmin GMR Fantom 18x Marine Radar:

Garmin’s latest radar, the Fantom GMR 18x. This incredibly powerful 18” dome radar has beauty and brains with a black color option and 50 watts of output power.

High Power

Tailor your 50-watt solid-state dome radar to your boat with a white or black option — both with a range from 20’ to 48 nautical miles, even in fog or rain, and up to 60 RPM rotation speed for a refresh rate that can detect movement at any speed.

High Resolution

High-resolution images and high antenna gain help to pick out targets at a distance, while 8-bit true color imagery enhances target separation.

Motionscope Technology

MotionScope uses the Doppler effect to detect moving targets and highlight them in different colors, so you can navigate around other boats or severe weather — or toward fishing spots where birds feed at the surface.

Power Save Mode

The power save feature lets you choose when you need more power or less, so you have power when you need it and conserve it when you don’t.

Timed Transmit Mode

Boaters and sailors can specify transmit times down to the seconds instead of minutes, allowing for reduced power consumption.

Intuitive Operation

These radars don’t have any complex user settings to deal with, so they’re easy to install and start using.

Physical & Performance

Max Range48 nm
Radar TypeRadome
Dimension18x: 20″ x 9.8″ (50.8 cm x 24.8 cm)
24x: 25.4″ x 9.8″ (64.5 cm x 24.9 cm)
Transition Power50 W
Beam Width18x: 5.2° horizontal, 25° vertical
24x: 3.7° horizontal, 25° vertical
Power Input10-32 V DC
Antenna Length18x: 17″ (43.18 cm)
24x: 23″ (58.42 cm)
Rotation speed (RPM)Up to 60 rpm, depending on settings
Minimum range6 meters
Weight18x: 14.0 lbs
24x: 17.4 lbs


Dual Range SupportYes
Dynamic Auto GainDynamic
Echo TrailYes
Max power consumption transmitting (power save)24 W
Radar Overlay SupportYes
Dual RadarYes
Power Consumption4 W
MARPA Target Trackyes (requires heading sensor, sold separately)
Max power consumption transmitting (normal mode)33 W
Target SizeYes

Additional information


White, Black