Garmin GMR 18 xHD

Garmin GMR 18 xHD

  • $2,879.10
    Unit price per 
Tax included.

PART NUMBER: 010-00959-00

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 colour (select chartplotters); range of 48 nm. “No Transmit Zone” protects 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.

Physical & Performance

Physical dimensions 50.8 cm diameter, 24.8 cm high
Rotation speed (RPM) 24/48 rpm (dual rotation)
Transmit power 4 kW
Antenna length 17" (43.18 cm)
Beam width 5.2° horizontal, 25° vertical
Water rating IPX7
Weight 7.7 kg
Minimum range 20 meters
Radar type Radome
Power input 11-35 V DC
Maximum range 48 nm
Power consumption 30 W typical; 48 W max


Guard zone alarm Yes
MARPA target tracking (collision avoidance) Yes (Requires Heading Sensor, Sold Separately)
Dual range support Yes
High definition (outstanding target separation with less screen clutter) Yes
Color 8 bit
No Transmit Zone Yes
Radar overlay support Yes


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