GARMIN GMR 18 xHD 11 to 35 VDC 4 kW 48 nm to 20 m 24/48 rpm 5.2 deg Horizontal and 25 deg Vertical Beam High-Definition 18 in Radome Antenna Radar|010-00959-00

GARMIN 010-00959-00, GMR-18xHD 4 kW high-definition 18” dome radar

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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 in 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 chart plotters), 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.

Additional information

Weight 22 lbs
Item Name






High Definition

Antenna Size

18 in

Antenna Type



20 in Dia x 9.75 in H

Maximum Range

48 nm

Minimum Range

20 m

Power Consumption

30 W Typical; 48 W Maximum


24/48 rpm (Dual)

Transmit Power

4 kW

Voltage Rating

11 to 35 VDC

Waterproof Rating



17 lb