Garmin
GMR™ 18 HD3 Radome
Pickup available at Mercury Yacht Harbour
Usually ready in 2-4 days
Description
The Garmin GMR 18 HD3 brings high-definition magnetron radar to a compact 18-inch radome. With 4 kW of peak power it delivers reliable detection from 20 m out to 36 nautical miles, making it a capable choice for cruising and coastal navigation.
As part of the HD3 family it introduces scan averaging, which filters out sea clutter and interference to give a cleaner, more consistent radar picture. Target-size processing uses pulse expansion to optimise on-screen object shapes for easier interpretation, while true echo trails display a historical trail of moving boats to help you spot potential collision threats.
A 5.2-degree horizontal beamwidth and 24 RPM antenna keep the image sharp, and dual-range with overlay lets you watch close and long range at the same time. The radome connects over Garmin BlueNet and Garmin Marine Network, carries an IPX7 water rating and is controlled entirely from a compatible Garmin chartplotter.
PRODUCT DETAILS
- 18 in magnetron radome with 4 kW of peak power for confident offshore detection
- Detection range from 20 m (66 ft) out to 36 nautical miles
- Scan averaging filters out sea clutter and interference for cleaner targets
- Target-size processing and true echo trails help identify moving targets
- 5.2-degree horizontal beamwidth and 24 RPM antenna rotation
- Dual-range with overlay shows close and long range simultaneously
- Garmin BlueNet and Garmin Marine Network compatible, IPX7 water rating
- GMR 18 HD3 radome
- Garmin BlueNet network cable
- Power cable with in-line fuse
- Mounting hardware (threaded rods, washers, nuts) and template
- Anti-seize compound
- Documentation
No exploded diagram available for this product.
No compatible transducers listed for this product.
No spares or accessories listed for this product.
No compatible products found.
Radar
| Transmitter Type | Magnetron (pulse) with scan averaging, target-size processing and true echo trails |
| Peak Power Output | 4 kW |
| Maximum Range | 36 nautical miles |
| Minimum Range | 20 m (66 ft) |
| Antenna Size | 18 in radome (enclosed) |
| Maximum Antenna Rotation Speed | 24 RPM |
| Horizontal Beamwidth | 5.2 degrees |
| Vertical Beamwidth | 25 degrees |
| Transmission Centre Frequency | 9.38 to 9.44 GHz |
Electrical
| Input Voltage | 11 to 32 Vdc |
| Power Consumption (typical) | Standby 15 W; Transmitting 40 W |
| Fuse | 7.5 A |
Connectivity
| Networking | Garmin BlueNet and Garmin Marine Network compatible |
Physical
| Weight | 7 kg (15.4 lb) |
| Dimensions (L x W x H) | 508.2 x 504.7 x 248.3 mm (20 x 19 7/8 x 9 3/4 in) |
| Case Material | Thermoplastic resin |
Environmental
| Operating Temperature Range | -25 to 70 C (-13 to 158 F) |
| Water Rating | IEC 60529 IPX7 |
| Compass-Safe Distance | 1.2 m (3.9 ft) |
| Minimum Safe Operating Distance | 100 W/m2 = 0.08 m; 50 W/m2 = 0.11 m; 10 W/m2 = 0.25 m |
