Garmin
GMR™ 18 HD3 Radome
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Warranty Details
Warranty Details






GMR™ 18 HD3 Radome
HIGH-DEFINITION MAGNETRON RADAR AT A VALUE PRICE
This compact 18″ dome radar combines ease of use with powerful scanning features that work to maximise your confidence and situational awareness on the water.
4kW 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
TOP FEATURES

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 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.
SEE WHAT TO EXPECT FROM WHATEVER'S OUT THERE
COMPACT AND POWERFUL
4kW of transmit power, 36-nautical mile maximum range and clear echo definition at all ranges.
CLOSE-IN TARGET SCANNING
Minimum scanning range of 20 metres 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.
Specs:
General |
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Dimension | 20″ diameter, 9.8″ high (508 mm diameter, 248 mm high) |
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Weight | 7.0 kg |
Water rating | 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 metres |
Radar type | Radome |
Electrical features |
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Power Input | 11 - 32 V DC |
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Power Consumption (standby) | 15 W |
Typical power consumption, transmitting (normal mode) | 40 W |
Transmit power | 4 kW |
Radar Features |
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Overlay | |
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Dual radar support | |
Auto Gain | Dynamic |
MARPA target tracking | Yes (requires heading sensor, sold separately) |
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

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Reliability
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Integrity
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Passion
As experts in our field, with years of hands-on experience, we know batteries like the back of our hands. When you come to MarineBatteryCo. we’ll use that knowledge to your advantage.
Who We Are
With 15 years in the marine industry, and 10 years running our own company, we know batteries and what you’ll need for your goals. With us, you’ll get quality and good value for your money. Our aim is to always deliver on our promises, and never promise more than we can. We’ll tell you the truth, whether it goes above or below your budget. Learn more about Thomas and MarineBatteryCo. here.
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