Garmin GMR 18 xHD Radar w/15m Cable
Garmin GMR 18 xHD Radar w/15m Cable — Product description
Imagine navigating through dense fog or spotting distant vessels at dusk without second-guessing your chartplotter. The Garmin GMR 18 xHD radar transforms your boating experience by delivering sharp, high-definition images that cut through clutter for unmatched situational awareness. This compact 18-inch dome packs the punch of larger open-array systems, making it ideal for cruisers, fishermen, and offshore adventurers who demand reliability without the hassle.
Crafted for seamless integration with Garmin chartplotters, it overlays radar data right on your maps, helping you track weather cells, debris, or approaching traffic effortlessly. Whether you're dodging sudden squalls or marking prime fishing spots, its advanced processing ensures you see more—and react faster.
Why Boaters Trust the GMR 18 xHD for Superior Performance
Unlike basic radars that overwhelm screens with noise, this unit employs cutting-edge signal processing for crystal-clear target separation. Here's what sets it apart in real-world conditions:
- Dynamic Auto Gain and Sea Filter: Automatically fine-tunes for calm harbors, choppy nearshore waters, or rough offshore seas—eliminating manual tweaks so you focus on the horizon.
- Dual Range Split-Screen: View close-in details (as near as 20 meters) alongside long-range scans up to 48 nautical miles simultaneously, perfect for maneuvering in tight marinas while monitoring distant threats.
- No Transmit Zone Option: Shields sensitive areas astern from radiation, opening up creative mounting spots on flybridges or hardtops without compromising forward coverage.
- MARPA Target Tracking: Locks onto up to 20 targets for speed, course, and collision alerts—essential when paired with a heading sensor for autopilot integration.
- High-Resolution 8-Bit Color: Renders echoes in vivid true color, reducing false readings from rain or waves for safer night passages.
With dual rotation speeds of 24 or 48 RPM, screen refreshes stay buttery smooth, adapting to your selected range for responsive operation.
Built Tough for Marine Demands
This radome isn't just powerful—it's engineered for endurance. At 4 kW transmit power, it punches through interference with a narrow 5.2° horizontal beam width, honing in on targets precisely. Its IPX7 waterproof rating shrugs off heavy spray, and the streamlined dome shape enhances aerodynamics while boosting antenna efficiency.
| Specification | Details |
|---|---|
| Dome Size | 18 inches (20" diameter x 9.75" height) |
| Weight | 17 lbs (7.7 kg) |
| Power Input | 10.5-35 VDC (33.5 W average) |
| Beam Width | 5.2° horizontal / 25° vertical |
| Rotation Speed | 24/48 RPM (auto-adjusting) |
Guard zones add peace of mind by audibly alerting you to intruders in user-defined areas, while timed transmit mode conserves power during standby.
Effortless Setup for Quick Wins
One of the biggest draws? Zero complex menus. Power it up, connect via the included 15m network and power cables, and you're scanning in minutes. Mount it high and forward for optimal sweeps—use the template for precise drilling. Network compatibility shines with Garmin MFDs, enabling overlay and multi-unit sharing. Pro tip: Align with your boat's bow datum for accurate headings, especially if adding MARPA.
For best results, position away from engines or metal objects to minimize interference. Many owners report plug-and-play success on vessels from 30-50 feet.
Real Boaters, Real Results
Fishermen love how it discriminates birds from bait balls, revealing structure in depths where sonar falls short. Cruisers rave about rain clutter rejection during coastal hops, spotting unlit aids-to-navigation effortlessly. In low viz, its short-pulse tech delivers near-instant updates, preventing close calls in busy channels.
Compared to entry-level domes, the xHD upgrade means fewer ghost echoes and sharper definition—vital for families or solo sailors prioritizing safety.
Everything You Need to Get Started
- GMR 18 xHD radome
- Mounting hardware kit
- 15m (49 ft) power cable
- 15m (49 ft) network cable
- Mounting template
- Grommet for clean cable runs
- Installation guide
Frequently Asked Questions
What makes the GMR 18 xHD radar high-definition?
It uses advanced 8-bit color processing and pulse compression for superior target resolution, reducing clutter from waves or rain compared to standard radars.
Can I use this radar on smaller boats?
Yes, its compact 18-inch dome and 4kW power suit boats 25-50 feet, providing ample range without overwhelming smaller hulls.
Does it require a heading sensor?
For MARPA tracking and precise overlays, pair it with a Garmin heading sensor. Basic operation works standalone.
How does Dual Range work?
Split your screen to monitor short-range (20m minimum) and long-range (up to 48nm) views independently—no switching needed.
Is installation DIY-friendly?
Absolutely. No user calibration required; includes all cables and hardware. Mount high for clear scans.
What’s the waterproof rating?
IPX7 certified—submersible to 1 meter for 30 minutes, built for harsh marine environments.
Can it overlay on non-Garmin chartplotters?
Optimized for Garmin Marine Network devices; check compatibility for others.
This 18 Inch high-definition radar dome pairs ease of use with advanced features typically found on open arrays for enhanced situational awareness. You have the option to protect areas behind the radar from being radiated while providing full forward-looking radar capability. This also makes installation more flexible. Overlay radar images onto your chartplotter’s map page. You can add an optional autopilot or heading sensor (sold separately) for best results. GMR 18 xHD provides MARPA target tracking when combined with a multifunction display and heading sensor.
Garmin 100095900 Attributes
- Radar Type: Radome
- Size: 18 Inch Dome
- Range: 20 Meters To 48 Nautical Miles
- Rotation Speed: 24 To 48 RPM
- Power Output: 4 Kilo Watt
- Dimension: 20 Inch Diameter x 9-3/4 Inch Height
- Input Voltage: 11 To 35 Volt
- Beam Width: 5.2 Degree Horizontal/ 25 Degree Vertical
- Color: White
- Waterproof Rating: IPX7 Rating Waterproof
- Includes: With Mounting Hardware Kit, 15 Meter Power Cable, 15 Meter Network Cable, Mounting Template
Garmin 100095900 Features & Benefits
- 18 Inch Dome Radar Delivers 4-KW Transmit Power And Clear Echo Definition At All Ranges; Maximum Range Of 36 Nautical Miles, A 20-Meter Minimum Range And A Rotation Speed Of 24 RPM
- GMR 18 XHD Features 8-Bit True Color High Resolution For Outstanding Target Separation With Less Screen Clutter On Your Chartplotter
- Radar Doesn’t Have Any Complex User Settings To Deal With, So It’s Easy To Install And Start Using
- Gain Levels Automatically Adjust To Optimum Settings For Harbors, Near Shore And Offshore In Open Waters
- Feature Enables The Fully Independent Split-Screen Display Of Far And Close Radar Views
- Limited 1 Year Warranty
Garmin 100095900 Installation Instructions
Garmin 100095900 Warranties
GMR 18 xHD
- 4 kW high-definition 18” dome radar
- Pairs ease of use with advanced open-array features
- 48 or 24 RPM rotation speeds for fast screen refreshes, auto adjusts as needed based on range
- 48 Mile max range setting
- No complex user settings, easy to install and start using
Our next-generation, 4 kW high-definition GMR 18 xHD dome radar pairs ease of use with advanced open-array features. Its intuitive operation makes modes and settings simple to understand so you can enjoy great performance without a lot of technical know-how.
The GMR 18 xHD delivers higher resolution than our previous generation 18” dome radars. New Dynamic Auto Gain and Dynamic Sea Filter continually adjust to your surroundings, providing optimal performance in varying conditions. Choose from multiple levels of aggressiveness or use manual gain adjustment. Dual range operation allows fully independent split-screen display of far and close radar views in full 8-bit color (select chartplotters); range of 48 nm. Optional “No Transmit Zone” can protect areas behind the radar from being radiated while providing full forward-looking radar capability. This makes installation more flexible by providing more suitable installation options on your boat.
In The Box:
- GMR 18 xHD
- Mounting hardware kit
- Power cable (15 m/49.21 ft)
- Network cable (15 m/49.21 ft)
- Installation instructions
- Mounting template
- Grommet for marine cable
GMR x HD Garmin's next-generation 4k W high-definition GMR x HD hemispherical radar with intuitive and advanced open array functions is very easy to use. The intuitive operation makes the modes and settings easy to understand, so you can enjoy excellent performance without a lot of technical knowledge. Provides a higher resolution than the previous generation "dome" radar. Dynamic automatic gain and dynamic subsea filter can continuously adapt to the surrounding environment to provide the best performance under different conditions. You can choose from multiple levels of aggressiveness, or you can use manual gain adjustment. Two-way operation can realize the split-screen display of full 8-bit color far-field and near-field radar views within 48 nautical miles.
SKU: NVN-51100
MPN: 010-00959-00
UPC: 753759111519
Technical specifications
| Brand | Garmin |
| Model | Garmin GMR 18 xHD Radar w/15m Cable |
| SKU / MFR# | 51100 |
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