Garmin

Garmin GMR Fantom™ 256 Radar - Black

SKU: 102814 · UPC: 753759331474 · MPN: K10-00012-35
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02 · Overview

Garmin GMR Fantom™ 256 Radar - Black — Product description

Step up your on-water situational awareness with the Garmin GMR Fantom™ 256, a powerhouse 6-foot open-array solid-state radar designed for boaters who demand reliability and precision. Packing 250 watts of targeted transmit power, this radar delivers exceptional clarity across vast distances, helping you spot potential hazards, navigate busy waters, or zero in on prime fishing grounds long before they become visible to the naked eye.

Unlock Smarter Navigation with MotionScope™ Doppler Technology

At the heart of the GMR Fantom 256 lies MotionScope™ technology, which harnesses the Doppler effect to differentiate moving objects from static ones. Incoming vessels, erratic weather cells, or flocks of diving birds appear in sweeping color gradients—reds for fast-approaching threats, greens for receding ones. This isn't just data; it's an intuitive visual language that lets you react instinctively, whether you're dodging a rogue crab pot during a coastal run or threading through a regatta.

Users rave about how it transforms night passages or foggy mornings into confident cruises, eliminating the guesswork that plagues traditional radars.

Effortless Target Tracking with Enhanced MARPA

Track up to 30 moving targets simultaneously with mini-automatic radar plotting aid (MARPA), now smarter with automatic acquisition. No manual intervention needed—simply set it and let the system lock on returns from guard zones, boundaries, or MotionScope highlights. Paired with echo trails that paint historical paths on your display, you'll gauge speeds, courses, and collision risks at a glance.

For skippers juggling crew and charts, this means fewer distractions and sharper focus on the helm.

Clutter-Free Views in Any Conditions

Sea clutter and rain interference? Not on this radar's watch. Scan-to-scan averaging smooths out noise for crisp images, while the dynamic sea filter adapts gain levels to flat calm, choppy swells, or storm-tossed waves. Pulse compression tech sharpens short- and long-range targets alike, ensuring you see the buoy at 6 meters or the freighter at 96 nautical miles with equal detail.

Fish Smarter with Auto Bird Gain

Anglers, take note: Auto Bird Gain automatically amplifies faint returns from surface-feeding birds, pinpointing bait balls beneath. It's like having a built-in spotter that reveals hidden opportunities, turning a slow drift into a hot bite without constant tweaks.

Seamless Integration and Robust Build

Overlay radar feeds directly onto your chartplotter's map for a unified view—add a heading sensor for stabilized perfection. Dual-range mode lets you monitor close-in traffic and distant horizons simultaneously, and dual-radar support expands coverage on larger vessels. Built tough with IPX6 waterproofing and 80-knot wind resistance, its 72-inch antenna spins at up to 48 RPM for rapid refreshes.

Weighing in at a manageable 16 lb for the array and 34.7 lb pedestal, installation is straightforward with included hardware. Power it from 10-32 VDC sources, and you're ready for extended outings.

Why Boaters Choose the GMR Fantom 256

This isn't entry-level radar; it's pro-grade performance wrapped in consumer-friendly smarts. Recreational sailors gain peace of mind in crowded anchorages, offshore adventurers track squalls from afar, and tournament pros chase bird piles with laser focus. With features like programmable antenna parking, target sizing, and guard zones that trigger audible alerts, safety and efficiency are always front and center.

Frequently Asked Questions

What makes MotionScope™ technology stand out on the GMR Fantom 256?

MotionScope™ uses Doppler processing to color-code moving targets, such as boats or weather, making them easy to spot and interpret for safer navigation.

How far can the GMR Fantom 256 detect targets?

It offers a maximum range of 96 nautical miles and a minimum of 6 meters, with dual-range capability for monitoring both nearby and distant objects.

Does this radar help with fishing by detecting birds?

Yes, Auto Bird Gain enhances visibility of bird flocks on the surface, signaling potential baitfish locations below.

What is MARPA and how many targets can it track?

MARPA is an automatic target tracking system that follows up to 30 moving objects, providing speed, course, and CPA data with minimal input.

How does the radar handle rough seas and clutter?

Scan-to-scan averaging and Dynamic Sea Filter reduce sea clutter and interference, delivering clear images in calm to rough conditions.

What power does the GMR Fantom 256 require?

It operates on 10-32 VDC with 250W transmit power, suitable for most marine electrical systems.

Can radar images overlay on charts?

Yes, radar overlays seamlessly onto compatible chartplotter maps when connected via Garmin Marine Network.

GMR Fantom™ 256 Radar - Black

GMR Fantom™ 256 is the most powerful 6’ consumer solid-state radar.

Features:

  • MotionScope™ highlights everything that moves so there are no surprises
  • GMR Fantom brings the power (250 watts of it)
  • Know the long and short of it with a detection range of 20’ to 96 nautical miles
  • The more the merrier with MARPA. Keep track of up to 30 moving targets
  • Clear the clutter with scan-to-scan averaging

Motionscope Technology

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

Automatic Acquisition

New mini-automatic radar plotting aid (MARPA) automatic acquisition allows for triggering and tracking of up to 30 targets with no user prompting on all returns, boundary zones, guard zones, or MotionScope.

Clear the Way

Scan-to-scan averaging aids in the reduction of sea clutter and interference, so users have a clear view of what’s out there.

Auto Bird Gain

Locate flocks of birds at the water’s surface where baitfish are also likely to be found

Pulse Compression

This feature provides high-resolution imaging while maximizing energy to enhance target detection and identification.

Echo Trails

A historical “trail” is left on the screen to help users quickly and easily identify moving targets and potential collision threats.

Radar Overlay

Overlay radar images onto a chart plotter’s map page. Users can add an optional autopilot or heading sensor (sold separately) for best results.

Dynamic Sea Filter

Dynamic Sea Filter automatically adjusts gain to calm, medium, and rough sea conditions.

Guard Zone

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

General Specifications:

  • Dimension: Pedestal: 16.6" x 14.3" x 10.7" (42.1 x 36.4 x 27.1 cm); Full assembly: 15.9" height x 75.2" diameter (40.3 cm x 190.9 cm)
  • Weight: Array: 16.0 lb (7.3 kg); Pedestal: 34.7 lb (15.7 kg)
  • Waterproof: IPX6
  • Max Wind Load: 80KT
  • Antenna Length: 72" (182.9 cm)
  • Rotation Speed (RPM): 24 and 48 RPM (high speed only available in single range mode with motion scope disabled and on range settings of 12 NM or lower)
  • Beam Width: 1.25° horizontal, 23° vertical
  • Maximum Range: 96 NM
  • Minimum Range: 6 Meters
  • Radar Type: Open-Array

Electrical Specifications:

  • Power Input: 10-32 V DC
  • Transmit Power: 250 W

Radar Specifications:

  • Dual Range: Yes
  • Overlay: Yes  
  • Dual Radar Support: Yes 
  • Auto Bird Gain: Yes  
  • Auto Gain: Dynamic
  • Marpa Target Tracking: Yes (requires heading sensor, sold separately)
  • Echo Trails: Yes
  • Motionscope: Yes 
  • Programmable Antenna Parking: Yes
  • Target Size: Yes
  • Scan Averaging: Yes

In the Box:

  • Black GMR Fantom 256 antenna and pedestal
  • Mounting hardware kit and template
  • Right-angle power cable (15 meters)
  • Right-angle network cable (15 meters) 
  • Voltage converter
  • Documentation

WarningWARNING: This product can expose you to chemicals including NICKEL (METALLIC) which is known to the State of California to cause cancer. For more information go to P65Warnings.ca.gov.




SKU: NVN-102814
MPN: K10-00012-35
UPC: 753759331474
03 · The numbers

Technical specifications

BrandGarmin
ModelGarmin GMR Fantom™ 256 Radar - Black
SKU / MFR#102814

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04 · Before you buy

Frequently asked questions

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05 · Customer voices

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