Skip to content Skip to navigation menu
Live Chat

18" GMR HD Digital Radome


Extended Product Protection with PLUS Plan!

Model # 9673732 | Mfg # 010-00572-02
In stock online.

Sharpen your radar picture with high definition performance. The GMR 18 HD radar offers a whole new level of radar scanning capability.

Get Powerful Performance: The GMR 18 HD features high-powered Digital Signal Processing, providing sharper radar imagery and improved target separation. This 18", 4 kW high definition radar has a 36 nm range, bringing radar images into even clearer focus. With automatic pulse optimization technology, the radar matches pulse widths and repetition rates with the nautical mile range that is selected. Combine that with the antenna’s five-degree beamwidth, and you’re looking at the best weather penetration and target definition in its class.

To help you avoid traffic on the water, the GMR 18 HD provides MARPA target tracking when combined with a multi-function display and an optional heading sensor. MARPA tracking allows you to track the bearing, course, speed and predicted closest approach of up to 10 targets. In addition, like all Garmin radars, the GMR 18 HD has self-contained signal processing, which provides you with a more precise, easy to read signature.

Connect to the Garmin Marine Network: The GMR 18 HD transmits data over the Garmin Marine Network, a 100 MB plug-and-play proprietary network that gives you the ability to expand your boat’s system as needed. Once connected to the network, you can use any network-compatible Garmin chartplotter as your radar screen. And as an aid to locational awareness, you can overlay the GMR 18 HD radar image on the chartplotter's map page. You also can split the on-screen display so you can view the map and the standard radar page simultaneously.

  • Physical dimensions: 18" diameter, 9.3" high
  • Weight: 15.8 lbs
  • Waterproof Rating: IPX7
  • Rotation Speed (RPM): 24/30 rpm (dual rotation)
  • Transmit Power: 4 kW
  • Power Input: 10.5-35 V DC
  • Beamwidth: 5.0° horizontal, 25° vertical
  • Maximum Range: 36 nm
  • Minimum Range: 20 meters
  • Radar Type: Radome
  • Power Consumption: 33.5 W typical
  • Antenna Length: 17"

18" GMR HD Digital Radome

Beam 5 Degrees H x 25 Degrees V
Dimensions 18" Diameter x 9 5/16" Height
Maximum Range 36 Nautical Miles
Transmit Power 4 Kilowatts
Type Radomes
Warranty Details Two Years
Weight 15.8 Pounds

West Advisor

The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.


by PowerReviews
Garmin 18" GMR HD Digital Radome

(based on 2 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 2 customers

Displaying reviews 1-2

Back to top

(6 of 6 customers found this review helpful)


completely happy with my purchase

By pault

from marina del rey

About Me Outdoor Enthusiast


  • Easy To Set Up


    Best Uses

      Comments about Garmin 18" GMR HD Digital Radome:

      Absolutely a perfect choice for me. I have 2 Garmin 741xs gps/sonar units. The installation was easy. The radar screen overlays the gps map for an extra level of comfort. You'll know where a bouy is or right where the breakwall is. Customizable screen and settings. I'm completely satisfied with my purchase.

      • Primary use:
      • Personal
      • Was this a gift?:
      • No

      (6 of 7 customers found this review helpful)


      Product very much worth buying!

      By Genesis

      from Warwick, RI

      About Me Love a challenge, Outdoor Enthusiast


      • Easy To Set Up
      • Reliable Performance
      • Strong Construction
      • Waterproof


        Best Uses

        • Expeditions
        • Fishing
        • Large Boats
        • Navigation
        • Sailing

        Comments about Garmin 18" GMR HD Digital Radome:

        This radar scanner is perfect for when your out on the water and the fog rolls in. Just use the radar and this unit is VERY accurate. You will get back to the safety of your Mariner with ease.

        • Primary use:
        • Personal

        Displaying reviews 1-2

        Back to top