The GMR 404 open array radar antenna allows you to scan more of what's out there while you're on the water. Whether ships, shores, birds or weather, you'll see it sooner with the GMR 404 and its counterpart, the GMR 406.
The GMR 404 is a 4-foot scanner with 1.8° beamwidth and a 72 nautical mile range. With this bandwidth and 4 kilowatts of power, this radar offers outstanding clarity, precision and target definition.
The GMR 406 is a 6-foot scanner with 1.1 ° beamwidth. With this bandwidth and 4 kilowatts of power, this radar offers outstanding clarity, precision and even more detailed target definition.
Any network-compatible Garmin chartplotter can double as your radar screen. And as an aid to locational awareness, you can overlay the GMR 404 radar image on the Garmin network's moving map cartography display. You can also split the on-screen display so that you can view the map and the standard radar page simultaneously.
GMR 404/406 Marine Radar Specifications
Antenna Type: End fed slotted waveguide
Input Return Loss: Better thean -20 dB
Antenna Gain: 29 dB (404), 30 dB (406)
Horizontal Sidelobes: -23 dB within +/-10 deg of main -30 dB outside +/-10 deg of main (404) -25 dB within +/-10 deg of main -30 dB outside +/-10 deg of main (406)
Antenna Weight: 12 lbs (404), 16 lbs (406)
Pedestal Physical Size: 24” x 11” x 16”
Transmit Power: 4KW
Power input: 10.5-38 Vdc, 45W typical
Antenna Beamwidth: 1.8 (404) and
1.1 (406) degrees horizontal /
Antenna RPMs: 24 rpm and 48 rpm
Bearing Accuracy: 1 degree
Maximum Range: 72 nm
Minimum Range: 20 meters
Range Discrimination: 20 meters
Range Ring Accuracy: 20 meter or +/- 1.5% of range scale, whichever is greater
Receiver Noise Figure: Less than 4 dB
Toll free: 1-877-379-2248
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