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Network capableGarmin GMR 24 xHD Radome

  • 4 kW high-definition 24” 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

Garmin's next-generation, 4 kW high-definition GMR 24 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 24 xHD has a narrower beam width that paints a very precise, high-resolution image. 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.

gmr 18x screenshot

xHD performance in a dome

High resolution (1440 display spokes vs. 720 on HD domes, draws detail down to ¼ of a degree vs. ½) to provide improved target separation and finer shoreline detail. 8-bit true color helps differentiate large targets from small ones and aids target separation.

gmr 18x screenshot

Dual Range Operation

Simultaneously view both short and long ranges. You can keep a close eye on your immediate surroundings while also knowing what’s happening farther out. It’s like having 2 radars for the price of one.

gmr 18x screenshot

Radar Overlay

Overlays radar returns over the top of your navigation charts to provide the best of both GPS and radar. You’ll have greater confidence in the accuracy of your charts when the radar paints the same markers and shorelines. It also helps you discern which radar returns are known charted objects and which are boats or other collision threats.

gmr 18x screenshot

Dynamic Auto Gain and Sea Filter

Automatically adjusts to your surroundings for optimal performance in all conditions. Dynamic Auto Gain maximizes your ability to see distant targets while limiting excess clutter on the screen. Dynamic Sea Filter reduces the returns caused by nearby waves in heavy seas. You can choose from multiple levels of aggressiveness or use manual gain adjustment.

gmr 18x screenshot

Mini-Automatic Radar Plotting Aid (MARPA)

Identify and track targets that might pose a collision threat. Targets are manually selected, but then the radar automatically tracks their location, speed, and direction over time. MARPA tells you the closest point of approach and time to that point if you continue on your current route so you can make adjustments for safety. It also alerts you when targets become dangerous or violate a safe proximity of your boat.

Garmin GMR 24 xHD Radome Specifications
Physical & Performance
Physical dimensions
25.4" diameter, 9.8" high (64.5 cm diameter, 24.9 cm high)
21 lb (9.5 kg)
Antenna length
23" (58.42 cm)
Power consumption
30 W typical; 48 W max
Rotation speed (RPM)
24/48 rpm (dual rotation)
Transmit power
4 kW
Power input
11-35 V DC
Beam width
3.7° horizontal, 25° vertical
Maximum range
48 nm
Minimum range
20 meters
Radar type
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
8 bit
Radar overlay support
Dual range support
No Transmit Zone
user's manual
Garmin GPSMAP 521 Series Accessories


Garmin GMR xHD 18  Radome Radar

Package includes:
• GMR 24 xHD
• Mounting hardware kit
• Power cable (15m/49.21ft)
• Network cable (15m/49.21ft)
• Installation instructions
• Mounting template
• Grommet for marine cable

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Garmin GMR xHD 18

Compatible Devices:
• GPSMAP 1020xs, 1040xs
• GPSMAP 4008, 4010, 4012, 4208, 4210, 4212
• GPSMAP 5008, 5012, 5015, 5208, 5212, 5215
• GPSMAP 6008, 6012, 6208, 6212
• GPSMAP 7012, 7015, 7212, 7215
• GPSMAP 7407, 7407xsv, 7408, 7408xsv, 7410, 7410xsv, 7412, 7412xsv, 7416, 7416xsv
GPSMAP 7607, 7607xsv, 7608, 7608xsv, 7610, 7610xsv, 7612, 7612xsv, 7616, 7616xsv

• GPSMAP 720/720s, 740/740s
• GPSMAP 721, 721xs, 741, 741xs
• GPSMAP 820xs, 840xs
• GPSMAP 8008 MFD, 8012 MFD, 8015 MFD, 8215 MFD

• GPSMAP 8208 MFD, 8212 MFD, 8215 MFD, 8417 MFD, 8422 MFD, 8424 MFD, 8617 MFD, 8622 MFD, 8624 MFD

• GPSMAP 8500 Black Box, 8530 Black Box

Garmin GMR 24 xHD Radome

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