Nautical gauges > Radar

Garmin GMR Fantom™ 4

4-foot Open-array Radar with 40 W of Power

  • 4-foot, 40 W solid-state, open-array radar with pedestal

  • MotionScope™ technology uses the Doppler effect to detect and highlight moving targets to help avoid collisions, find flocks of birds and track weather
  • Pulse Compression technology provides high resolution while maximising energy in order to to enhance detection and identification of targets
  • Pulse Expansion setting increases target sizes to help differentiate real targets from noise
  • Provides radar data overlay onto charts (autopilot or heading sensor recommended)
  • Detection range of 20 feet to 72 nautical miles

High-power 40 W Radar with Narrow 1.8 Degree Beam

You get excellent close- and long-range target detection ranging from as close as 20 feet to 72 nautical miles, even in fog or rain. Its narrow 1.8 degree horizontal beamwidth provides a high-resolution image and high antenna gain so it can pick out weak targets at a distance. The result is this radar paints a clear, concise image of the shoreline, other vessels and impending weather — right on your Garmin chartplotter. You get consistent target positions, excellent target separation and reliable operation. Its 8-bit true colour imagery also helps you discriminate large targets from small ones and enhances target separation. Rotation speed of up to 48 rpm provides fast screen updates.


MotionScope Doppler Technology

The GMR Fantom uses the Doppler effect to detect and highlight moving targets to help you avoid potential collisions, find flocks of birds and track weather formations. The Doppler effect is the frequency shift in the radar echo due to the relative motion of the target. This allows for instant detection of any targets moving toward or away from the radar. MotionScope highlights the moving targets on the radar display so you can navigate around other boats or severe weather — or toward fishing spots where birds are feeding at the surface.

Pulse Expansion

Maximises target size to help differentiate real targets from noise and provides a visually larger sized target on the chartplotter.

Auto Bird Gain

Fishermen know, when you find birds at the water's surface, you'll also find fish. To further improve your fishing experience, use Auto Bird Gain, which helps to locate flocks of birds at the water's surface where baitfish are also likely to be found.

Echo Trails

A fading "trail" is left on the screen to help you quickly and easily identify moving targets and potential collision threats. Trails are corrected for your boat's rotation when an autopilot or heading sensor is connected to your Garmin network.

Dual Range with Overlay

A single radar antenna is capable of providing split screen images on your chartplotter side-by-side, with independent range setting and controls for both close and long range. One or both ranges can also be viewed as a chart overlay.

Dual Radar Support

Provides redundancy and the ability for each display unit on the boat to select data from 1 of 2 different radar sources.

Dynamic Auto Gain

Dynamic Auto Gain automatically adjusts to your surroundings for optimal performance in all conditions.

Dynamic Sea Filter

Dynamic Sea Filter automatically adjusts gain to changing sea conditions with user options for low, medium or high filtering.

Radar Overlay

Overlays the radar image on the chartplotter's map page. An autopilot or heading sensor is recommended for best results.

MARPA Target Tracking

Mini-automatic radar plotting aid (MARPA) tracks up to 10 selected targets, helping you keep track of other vessels and avoid collisions. (A heading sensor is required)

Guard Zone

Set the safety zone and receive an alarm when an object enters the zone.


Variable range markers (VRM) and electronic bearing lines (EBL) allow rapid measurements of distance and bearing to vessels and land.

Vertical Range Scaling

Fits the selected radar range to the vertical size of your display to show more forward looking radar returns on screen and make it easier to interpret target distances.



Physical dimensions

Pedestal: 42.1 x 36.4 x 27.1 cm

Full assembly: 40.3 cm height x 131.4 cm diameter


Array: 5.2 kg

pedestal: 15.7 kg

Water rating IPX6
Power consumption Typical 55 W; Max 160 W
Antenna length 121.92 cm
Rotation speed (RPM) 24 and 48 rpm
Transmit power 40 kW
Power input 10-32 V
Beam width 1.8° horizontal, 23° vertical
Maximum range 72 nm
Minimum range 6 meters
Radar type Open-Array

Radar Features

High definition (outstanding target separation with less screen clutter)
MARPA target tracking (collision avoidance) Yes (Requires Heading Sensor, Sold Separately)
Guard zone alarm
Color 8 bit
Radar overlay support
Dual range support
Timed Transmit
No Transmit Zone
Dynamic Auto Gain Dynamic
Dynamic Sea Filter Dynamic


  • MotionScope: Yes
  • Auto Bird Gain: Yes
  • Dual Radar Support: Yes
  • Echo Trails: Yes
  • Programmable Antenna Parking Position: Yes
  • Max Wind Speed: 80 kt

Price list: € 8,700.00

Discounted price: € 8,689.00

Free delivery to Italy!

Compressport Body Aero Trisuit

Compressport Body Aero Trisuit

Price: € 180.00

Discounted price: € 169.00

Garmin Quatix 7 cod. 010-02540-61

Garmin Quatix 7 cod. 010-02540-61

Price: € 700.00

Discounted price: € 699.00

Garmin Striker Cast

Garmin Striker Cast

Price: € 150.00

Discounted price: € 149.00

Garmin Quatix 7X Solar cod. 010-02541-61

Garmin Quatix 7X Solar cod. 010-02541-61

Price: € 1,200.00

Discounted price: € 1,199.00

Garmin GPSMAP 1022 XSV

Garmin GPSMAP 1022 XSV

Price: € 2,400.00

Discounted price: € 1,699.00

Garmin Forerunner 245 Music

Garmin Forerunner 245 Music

Price: € 300.00

Discounted price: € 299.99

Oceanic GT3

Oceanic GT3

Price: € 320.00

Discounted price: € 199.00

Oceanic Complete Octopus G3

Oceanic Complete Octopus G3

Price: € 487.00

Discounted price: € 399.00