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Network capableGarmin GMR 18 Radar

Discontinued. Replaced by the Garmin GMR 18HD >>

The GMR 18 brings you the power of X-band digital marine radar scanning...

Get Powerful Performance
GMR 18 is a 4 kilowatt radar with 36 nm range. At 18 inches in diameter, it is twice as powerful as most other radars in its size and price range. Combine that with the antenna's 5.2? 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 provides MARPA target tracking, which allows you to track the bearing, course, speed and predicted closest approach of up to 10 targets. And like all Garmin radars, GMR 18 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 transmits data over the Garmin Marine Network, a 100-megabit 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 radar image on the chartplotter's map page. You can also split the on-screen display so that you can view the map and the standard radar page simultaneously.

Physical & Performance
Unit dimensions, WxHxD: 18" diameter, 8.9" high (45.7 cm diameter, 22.6 cm high)
Weight: 15.8 lb (7.2 kg)
Waterproof: yes (IPX7)
Antenna sweep: 24/30 rpm
Transmit power: 4 kW Power input: 10.5-35 V DC, 33.5 W
Beam width: 5.2? horizontal, 25? vertical
Maximum range: 36 nm
Minimum range: 20 meters
RoHS version available: yes

Garmin Marine NetworkT compatible: yes
MARPA target tracking (collision avoidance): yes (requires heading sensor; sold separately)
Guard zone alarm: yes

GMR 18

Package includes:
• GMR 18
• Power cable
• Network cable
• Mounting hardware kit
• Installation instructions
• Field install RJ-45 network cable connector
• Mounting template
• Grommet for marine cable

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