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 Range 48 nm
Radar Type Radome
Dimension 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)
Transition Power 50 W
Beam Width 18x: 5.2° horizontal, 25° vertical
24x: 3.7° horizontal, 25° vertical
Power Input 10-32 V DC
Antenna Length 18x: 17″ (43.18 cm)
24x: 23″ (58.42 cm)
Rotation speed (RPM) Up to 60 rpm, depending on settings
Minimum range 6 meters
Waterproof IPX7
Weight 18x: 14.0 lbs
24x: 17.4 lbs


Dual Range Support Yes
Dynamic Auto Gain Dynamic
Echo Trail Yes
Max power consumption transmitting (power save) 24 W
Radar Overlay Support Yes
Dual Radar Yes
MotionScope Yes
AutoBird Yes
Power Consumption 4 W
MARPA Target Track yes (requires heading sensor, sold separately)
Max power consumption transmitting (normal mode) 33 W
Scan Yes
Target Size Yes

Additional information


White, Black