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Garmin GMR 18 xHD Radar with 15m Cable

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Product Description


GMR 18 xHD - Garmin's next-generation, 4kW high-definition GMR 18 xHD dome radar with intuitive advanced open-array features is very easy to use. Intuitive operation makes modes and settings simple to understand so you can enjoy great performance without a lot of technical know-how. Delivers higher resolution than our previous generation 18" dome radars. 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 split-screen display of far and close radar views in full 8-bit color. Range of 48 nautical miles.

  • 4kW high-definition 18" dome radar
  • Step up to xHD performance in a radome
  • Garmin dynamic new shape allows for a larger antenna to occupy the same footprint
  • No complex user settings, easy to install and start using
  • Dynamic Auto Gain and Dynamic Sea Filter continually adjust to your surroundings to provide optimal performance in varying conditions
  • Harbor/Offshore and Calm/Medium/Rough user selections allow the user to vary the aggressiveness of the Dynamic Auto features
  • 8-bit true color display (on select chartplotter models)
  • Dual range operation allows split screen display for far and close radar views
  • 48 RPM max speed with auto adjustment based on range
  • Maximum range of 48 nautical miles


Physical & Performance
Unit dimensions, WxHxD  20" diameter, 9.75" high (50.8 cm diameter, 24.8 cm high) 
Weight  17 lbs (7.7 kg) 
Waterproof  Yes (IPX7) 
Antenna sweep  24/48 rpm (dual rotation) 
Transmit power  4 kW 
Power input  10.5-35 V DC, 33.5 W 
Beam width  5.2° horizontal, 25° vertical 
Maximum range  48 nm 
Minimum range  20 meters 

Features & Benefits
Garmin Marine Network™ compatible  Yes 
High definition (outstanding target separation with less screen clutter)  Yes 
MARPA target tracking (collision avoidance)  Yes (Requires Heading Sensor, Sold Separately) 
Guard zone alarm  Yes 

Radar Overlay Support: yes
Dual Range Support: yes
Dynamic Auto Gain: yes
Dynamic Sea Filter: yes
Timed Transmit: yes
No Transmit Zone: yes


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

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