Garmin

Garmin GMR™ 434 xHD3 4' Open Array Radar & Pedestal - 4kW

SKU: 99839 · UPC: 753759309947 · MPN: K10-00012-24
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02 · Overview

Garmin GMR™ 434 xHD3 4' Open Array Radar & Pedestal - 4kW — Product description

Experience Unmatched Clarity on the Water with Garmin's xHD3 Open Array Radar

Picture this: you're offshore, battling choppy seas and low visibility, when suddenly your Garmin GMR 434 xHD3 radar paints a crystal-clear picture of approaching vessels, hidden obstacles, and even bird flocks signaling prime fishing spots. This 4-foot open-array powerhouse, paired with its robust pedestal, delivers 4kW of magnetron-driven performance that serious mariners rely on for safety and precision.

Unlike traditional dome radars, the open-array design provides a razor-sharp horizontal beamwidth of 1.8 degrees, letting you spot targets up to 72 nautical miles away with exceptional detail. Whether you're a weekend cruiser dodging weekend traffic or a commercial operator pushing limits in rough conditions, this radar adapts seamlessly to your needs.

Revolutionary Technologies for Superior Target Detection

The GMR 434 xHD3 stands out with innovations that go beyond basic scanning. New Scan Averaging Technology smooths out sea clutter and random noise, making consistent targets—like that freighter on a collision course—pop vividly on your screen. It's like having a seasoned radar operator filtering the chaos in real-time.

Angular Target-Size Adjustment and True Echo Trails

Pulse expansion refines object shapes across all ranges, turning vague blips into identifiable silhouettes. Pair it with True Echo Trails, which traces vessel paths without relative motion distortion, and you'll gauge speeds and headings effortlessly—crucial for evading close calls at sea.

  • Dual-Range Overlay: Split your chartplotter screen for short-range harbor maneuvering alongside long-range offshore vigilance, with independent controls.
  • Dynamic Auto Gain and Sea Filter: Automatically tunes for calm bays, coastal swells, or stormy oceans, saving you manual tweaks.
  • Auto Bird Gain: Highlights surface bird activity, a fisherman's shortcut to bait balls teeming with trophy catches.

High-resolution imaging shines in fog, rain, or dusk, while MARPA target tracking monitors up to 30 objects, issuing collision alerts to keep your crew safe.

Effortless Integration and Battle-Tested Durability

Connects via Garmin's marine network to compatible chartplotters for radar overlays on charts—perfect for intuitive navigation. Dual-radar support adds redundancy, ensuring no single point of failure mid-voyage.

Engineered for extremes, it boasts IPX6 waterproofing, a quiet drive motor, and rotation speeds of 24/48 RPM. Handle 80-knot winds standard (upgradable to 100 knots), with dimensions tailored for stable mounting: the 4' array measures 52.2" x 4.8" x 6.7", and the pedestal 20.5" x 12.9" x 12.4". At 27.6 kg total, it's solid without being unwieldy.

Power draws just 55W transmitting (18W standby) from 11-32V DC, sipping energy on long passages. Features like guard zones, variable range markers, and electronic bearing lines make quick work of distance and threat assessments.

Real-World Scenarios Where It Excels

For offshore anglers, bird mode uncovers hidden fish hauls. Cruisers appreciate dynamic adjustments during sudden squalls. Commercial ops benefit from pedestal stability and wind resistance in gales. Even in busy harbors, dual-range keeps eyes on nearby tenders and distant horizons simultaneously.

"Switching to xHD3 felt like upgrading from binoculars to a sniper scope—targets resolve faster, clutter vanishes." – Experienced offshore captain

It's not just radar; it's your vigilant first mate, enhancing situational awareness when eyes alone fall short.

Everything You Need for Quick Setup

  • 4 kW open-array radar with 4' antenna
  • 15m power cable
  • 15m network cable
  • Mounting hardware, template, and instructions

Arrives ready to install, minimizing downtime before your next outing.

Frequently Asked Questions

GMR™ 434 xHD3 4' Open Array Radar & Pedestal - 4kW

SCAN WITH THE MAGNETRON POWER OF GARMIN OPEN-ARRAY RADAR

Combining high-definition imaging with the latest Garmin platform technology, this robust 4’ open-array radar offer superior weather, obstacle and traffic detection for mariners cruising or fishing offshore.

  • Up to 72-nautical mile range
  • Scan Averaging Technology
  • Improved Target-Size Processing 
  • Split-Screen Dual-Range Display
  • 100-Knot Commercial Grade Wind Rating1 
  • Quiet Open-Array Drive Motor 

New Scan Averaging Technology

A first for Garmin magnetron radar, scan averaging helps filter out sea clutter and interference to enhance the detection and display of consistent targets.

Angular Target-Size Adjustment

Pulse expansion and angular target-size processing techniques optimize on-screen object shapes for better interpretation at all range scales.

True Echo Trails

A historical “trail” of boats on the water is displayed on the screen, removing relative motion influence to help you quickly identify moving targets and potential collision threats.

Dual Range with Overlay

A single radar antenna is capable of providing split-screen, side-by-side images on your compatible chartplotter, with independent range setting and controls for both close and long range. Overlay either or both ranges on a chart.

Dynamic Auto Gain

Gain automatically adjusts levels to optimum settings for harbors, near shore and offshore in open waters.

Radar Overlay

See overlaid images on your chartplotter’s map screen (with appropriate sensors, sold separately).

High-Resolution Radar

Pick out targets at a distance, thanks to narrow horizontal beamwidth and high antenna gain.

Dual-Radar Support

This provides redundancy and allows each display unit to pull data from different sources.

Dynamic Sea Filter

Radar gain automatically adjusts sea clutter for calm, medium and rough sea conditions.

Auto Bird Gain

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

MARPA Target Tracking

Track up to 30 targets to help avoid collisions (with appropriate sensors, sold separately).

Guard Zone

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

Range and Bearing Cues

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

Includes:

  • GMR xHD3 4 kW open array radar with 4’ antenna
  • Power cable (15 m/49.21 ft)
  • Network cable (15 m/49.21 ft)
  • Mounting hardware kit and template
  • Installation instructions

Dimensions:    

  • 4' array - 1325 x 122 x 170 mm / 52.2" x 4.8" x 6.7"
  • Pedestal: 520 x 328 x 314 mm / 20.5" x 12.9" x 12.4"

Weight:    

  • 4' array and pedestal - 27.6 kg

Specifications:

  • Waterproof: IPX6
  • Max Wind Load: 80KT (100KT with optional voltage converter upgrade)
  • Antenna length: 48 in. (122 CM)
  • Rotation Speed (RPM): 24 and 48 RPM
  • Beam Width: 1.8° horizontal, 23° vertical
  • Maximum Range: 72 nautical miles
  • Minimum Range: 20 meters
  • Radar Type: Open-array

Electrical Features:

  • Power Input: 11-32 V DC
  • Power Consumption (Standby): 18 W
  • Typical Power Consumption, Transmitting (Normal mode): 55 W
  • Transmit Power: 4 kW

14-kW versions require optional equipment (sold separately) for 100-knot wind rating

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-99839
MPN: K10-00012-24
UPC: 753759309947
03 · The numbers

Technical specifications

BrandGarmin
ModelGarmin GMR™ 434 xHD3 4' Open Array Radar & Pedestal - 4kW
SKU / MFR#99839

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04 · Before you buy

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05 · Customer voices

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