Garmin Gmr 18 Hd3 18" Radar Dome
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Garmin Gmr 18 Hd3 18" Radar Dome
GMR 18 HD3 18" Radar Dome
This compact 18" dome radar combines ease of use with powerful scanning features that work to maximize your confidence and situational awareness on the water.
Features:
- 4 KW power output, 36 nautical mile max range
- Space-saving 18" dome
- Marpa target tracking
- Dynamic auto gain and sea filter
- Dual-radar support
- Quiet dome drive motor
Dual-Radar Support
Using dual radar provides redundancy and allows each display unit on the boat to pull data from one of two different radar sources.
Dynamic Auto Gain
Gain automatically adjusts levels to optimum settings.
Dynamic Sea Filter
Radar gain automatically adjusts sea clutter for calm, medium and rough sea conditions.
Radar Overlay
Overlay radar images onto your chartplotter’s map page. You can add an optional autopilot or heading sensor (sold separately) for the best results.
MARPA Target Tracking
MARPA tracks selected targets to help keep track of other vessels and avoid collisions (with appropriate sensors, sold separately).
Low-Noise Scanning
The reliable GMR HD3 dome drive motor spins at a fixed 24 rpm, offering reliable, low-noise operation and minimal power consumption.
Compact and Powerful
4 kW of transmit power, a 36 nautical mile maximum range, and clear echo definition at all ranges.
Close-In Target Scanning
Minimum scanning range of 20 meters for excellent short-range detection and target detail.
High-Resolution Radar
8-bit true color for outstanding target separation with less screen clutter.
Timed Transmit Mode
Specify transmit times down to the seconds to help reduce power consumption.
Intuitive operation
No complex user settings, so it’s easy to install and start using.
In the Box:
- GMR 18 HD3 dome radar
- Power cable (15 m/49.21 ft)
- Network cable (15 m/49.21 ft)
- Mounting hardware kit and template
- Installation instructions
General:
- Dimensions: 20" diameter, 9.8" high (508 mm diameter, 248 mm high)
- Weight: 7.0 kg
- Waterproof: IPX7
- Antenna length: 17" (43 cm)
- Rotation Speed (RPM): 24 rpm
- Beam Width: 5.2° horizontal, 25° vertical
- Maximum Range: 36 nm
- Minimum Range: 20 meters
- Radar Type: Radome
Electrical Features:
- Power Input: 11-32 v DC
- Power Consumption (Standby): 15 W
- Typical Power Consumption, Transmitting (Normal Mode): 40 W
- Transmit Power: 4 KW
Radar Features:
- Overlay: Yes
- Dual Radar Support: Yes
- Auto Gain: Dynamic
- MARPA Target Tracking: Yes (requires heading sensor, sold separately)
Manufacturer Part Number: 010-02843-00
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Return Policy
Hodges Marine accepts returns for up to thirty (30) days after shipment. Our return policy does not apply to the following goods: Open software, mapping/chart data cards, programmed AIS units, opened/registered KVH Starlink products, trolling motors, international orders, freight truck only items, and special order items. These items are not eligible for return, refund or exchange. Shipping charges (if any) are non-refundable. If your return is accepted by Us, We will provide one of the following within a reasonable time: an exchange of merchandise for the item returned, a non-transferable merchandise credit, a credit to the payment card or original method of payment used to pay for the item, a check, or another remedy that we determine in good faith is appropriate in the circumstances. Customer must request a return merchandise authorization (RMA) through the product returns link on our website or by emailing us at [email protected]. A RMA number will be issued with instructions for returning the package within a reasonable time (normally 1-3 business days).
Defective Products:
A prepaid return shipping label will be provided for defective items if deemed necessary by the manufacturer. The customer must first contact the manufacturer for technical support to confirm product is defective and that product replacement is deemed necessary. Please provide the name of the technician, serial number, and details about the defect. Return instructions and a label will be provided.
Non-Defective Returns:
Eligible non-defective products may be returned for a full refund minus shipping paid (if any). To be eligible for a non-defective return, your merchandise must be unused/unopened and must be in the original packaging. Non-defective returns that show signs of installation/use, missing parts/packaging, missing proof of purchase/UPC code, or have serial numbers that do not match our records will not be accepted. Customer is responsible for return shipping costs of non-defective returns. You should consider using a trackable shipping service or purchasing shipping insurance for items of value. Hodges Marine is not liable for lost or damaged return packages.
General - Cancellations, Shipping Damage, Missing Packages, Shipment Refusals:
Orders that you submit online are processed immediately and may not be cancelled, and you may need to wait until you receive the merchandise in order to return it. Claims of shipment damage, incorrect/missing items, or non-receipt of goods must be made within seven (7) days. Customer is responsible for all costs associated with refused shipments or return to sender (RTS) shipments including carrier fees, freight to the customer, and return freight. We reserve the right to refuse returns that are sent COD, without a return authorization, show signs of undisclosed installation/use, has missing parts/packaging, missing proof of purchase/UPC code, or have serial numbers that do not match our records. If you do not comply with any of the above conditions, We reserve the right to refuse the return/exchange, or to impose different or additional conditions. Please see our TERMS AND CONDITIONS for additional applicable information.
Last Updated: JUNE 09 2026
Please email us at [email protected] or use the product returns link.
